Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1 | #include <unistd.h> |
| 2 | #include <fcntl.h> |
| 3 | #include <string.h> |
| 4 | #include <signal.h> |
| 5 | #include <time.h> |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 6 | #include <assert.h> |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 7 | |
| 8 | #include "fio.h" |
Jens Axboe | 5973caf | 2008-05-21 19:52:35 +0200 | [diff] [blame] | 9 | #include "hash.h" |
Jens Axboe | 4f5af7b | 2009-06-03 08:45:40 +0200 | [diff] [blame] | 10 | #include "verify.h" |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 11 | #include "trim.h" |
Jens Axboe | 1fbbf72 | 2010-03-25 23:03:18 +0100 | [diff] [blame] | 12 | #include "lib/rand.h" |
Jens Axboe | 7ebd796 | 2012-11-28 21:24:46 +0100 | [diff] [blame] | 13 | #include "lib/axmap.h" |
Jens Axboe | 002fe73 | 2014-02-11 08:31:13 -0700 | [diff] [blame] | 14 | #include "err.h" |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 15 | |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 16 | struct io_completion_data { |
| 17 | int nr; /* input */ |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 18 | |
| 19 | int error; /* output */ |
Jens Axboe | 100f49f | 2013-01-23 10:15:57 -0700 | [diff] [blame] | 20 | uint64_t bytes_done[DDIR_RWDIR_CNT]; /* output */ |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 21 | struct timeval time; /* output */ |
| 22 | }; |
| 23 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 24 | /* |
Jens Axboe | 7ebd796 | 2012-11-28 21:24:46 +0100 | [diff] [blame] | 25 | * The ->io_axmap contains a map of blocks we have or have not done io |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 26 | * to yet. Used to make sure we cover the entire range in a fair fashion. |
| 27 | */ |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 28 | static int random_map_free(struct fio_file *f, const uint64_t block) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 29 | { |
Jens Axboe | 7ebd796 | 2012-11-28 21:24:46 +0100 | [diff] [blame] | 30 | return !axmap_isset(f->io_axmap, block); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 31 | } |
| 32 | |
| 33 | /* |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 34 | * Mark a given offset as used in the map. |
| 35 | */ |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 36 | static void mark_random_map(struct thread_data *td, struct io_u *io_u) |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 37 | { |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 38 | unsigned int min_bs = td->o.rw_min_bs; |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 39 | struct fio_file *f = io_u->file; |
Jens Axboe | 51ede0b | 2012-11-22 13:50:29 +0100 | [diff] [blame] | 40 | unsigned int nr_blocks; |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 41 | uint64_t block; |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 42 | |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 43 | block = (io_u->offset - f->file_offset) / (uint64_t) min_bs; |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 44 | nr_blocks = (io_u->buflen + min_bs - 1) / min_bs; |
| 45 | |
Jens Axboe | 2ab9e98 | 2012-11-22 15:14:17 +0100 | [diff] [blame] | 46 | if (!(io_u->flags & IO_U_F_BUSY_OK)) |
Jens Axboe | 7ebd796 | 2012-11-28 21:24:46 +0100 | [diff] [blame] | 47 | nr_blocks = axmap_set_nr(f->io_axmap, block, nr_blocks); |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 48 | |
Jens Axboe | 51ede0b | 2012-11-22 13:50:29 +0100 | [diff] [blame] | 49 | if ((nr_blocks * min_bs) < io_u->buflen) |
| 50 | io_u->buflen = nr_blocks * min_bs; |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 51 | } |
| 52 | |
Jens Axboe | 7477673 | 2013-01-11 14:03:25 +0100 | [diff] [blame] | 53 | static uint64_t last_block(struct thread_data *td, struct fio_file *f, |
| 54 | enum fio_ddir ddir) |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 55 | { |
Jens Axboe | 7477673 | 2013-01-11 14:03:25 +0100 | [diff] [blame] | 56 | uint64_t max_blocks; |
| 57 | uint64_t max_size; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 58 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 59 | assert(ddir_rw(ddir)); |
| 60 | |
Jens Axboe | d9dd70f | 2008-05-23 12:37:23 +0200 | [diff] [blame] | 61 | /* |
| 62 | * Hmm, should we make sure that ->io_size <= ->real_file_size? |
| 63 | */ |
| 64 | max_size = f->io_size; |
| 65 | if (max_size > f->real_file_size) |
| 66 | max_size = f->real_file_size; |
| 67 | |
Steven Noonan | ed33585 | 2012-01-31 13:58:00 +0100 | [diff] [blame] | 68 | if (td->o.zone_range) |
| 69 | max_size = td->o.zone_range; |
| 70 | |
Justin Eno | e67b928 | 2015-01-27 14:23:20 -0800 | [diff] [blame] | 71 | if (td->o.min_bs[ddir] > td->o.ba[ddir]) |
| 72 | max_size -= td->o.min_bs[ddir] - td->o.ba[ddir]; |
| 73 | |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 74 | max_blocks = max_size / (uint64_t) td->o.ba[ddir]; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 75 | if (!max_blocks) |
| 76 | return 0; |
| 77 | |
Jens Axboe | 67778e8 | 2008-05-15 09:20:08 +0200 | [diff] [blame] | 78 | return max_blocks; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 79 | } |
| 80 | |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 81 | struct rand_off { |
| 82 | struct flist_head list; |
| 83 | uint64_t off; |
| 84 | }; |
| 85 | |
Jens Axboe | e25839d | 2012-11-06 10:49:42 +0100 | [diff] [blame] | 86 | static int __get_next_rand_offset(struct thread_data *td, struct fio_file *f, |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 87 | enum fio_ddir ddir, uint64_t *b) |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 88 | { |
Jens Axboe | 46ad62d | 2014-11-23 18:41:11 -0700 | [diff] [blame] | 89 | uint64_t r; |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 90 | |
Jens Axboe | 8055e41 | 2012-11-26 08:43:47 +0100 | [diff] [blame] | 91 | if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE) { |
Jens Axboe | 46ad62d | 2014-11-23 18:41:11 -0700 | [diff] [blame] | 92 | uint64_t lastb; |
| 93 | |
| 94 | lastb = last_block(td, f, ddir); |
| 95 | if (!lastb) |
| 96 | return 1; |
| 97 | |
Jens Axboe | f678701 | 2014-11-05 18:39:23 -0700 | [diff] [blame] | 98 | r = __rand(&td->random_state); |
Jens Axboe | 8055e41 | 2012-11-26 08:43:47 +0100 | [diff] [blame] | 99 | |
Jens Axboe | 4b91ee8 | 2013-02-25 10:18:33 +0100 | [diff] [blame] | 100 | dprint(FD_RANDOM, "off rand %llu\n", (unsigned long long) r); |
Jens Axboe | 8055e41 | 2012-11-26 08:43:47 +0100 | [diff] [blame] | 101 | |
Jens Axboe | 559073f | 2014-11-05 18:34:02 -0700 | [diff] [blame] | 102 | *b = lastb * (r / ((uint64_t) FRAND_MAX + 1.0)); |
Jens Axboe | 51ede0b | 2012-11-22 13:50:29 +0100 | [diff] [blame] | 103 | } else { |
Jens Axboe | 8055e41 | 2012-11-26 08:43:47 +0100 | [diff] [blame] | 104 | uint64_t off = 0; |
| 105 | |
Jens Axboe | d55dd04 | 2014-12-15 09:38:43 -0700 | [diff] [blame] | 106 | assert(fio_file_lfsr(f)); |
| 107 | |
Jens Axboe | 46ad62d | 2014-11-23 18:41:11 -0700 | [diff] [blame] | 108 | if (lfsr_next(&f->lfsr, &off)) |
Jens Axboe | 8055e41 | 2012-11-26 08:43:47 +0100 | [diff] [blame] | 109 | return 1; |
| 110 | |
| 111 | *b = off; |
Jens Axboe | 51ede0b | 2012-11-22 13:50:29 +0100 | [diff] [blame] | 112 | } |
Jens Axboe | 2615cc4 | 2011-03-28 09:35:09 +0200 | [diff] [blame] | 113 | |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 114 | /* |
Jens Axboe | 51ede0b | 2012-11-22 13:50:29 +0100 | [diff] [blame] | 115 | * if we are not maintaining a random map, we are done. |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 116 | */ |
Jens Axboe | 51ede0b | 2012-11-22 13:50:29 +0100 | [diff] [blame] | 117 | if (!file_randommap(td, f)) |
| 118 | goto ret; |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 119 | |
| 120 | /* |
Jens Axboe | 51ede0b | 2012-11-22 13:50:29 +0100 | [diff] [blame] | 121 | * calculate map offset and check if it's free |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 122 | */ |
Jens Axboe | 51ede0b | 2012-11-22 13:50:29 +0100 | [diff] [blame] | 123 | if (random_map_free(f, *b)) |
| 124 | goto ret; |
| 125 | |
Jens Axboe | 4b91ee8 | 2013-02-25 10:18:33 +0100 | [diff] [blame] | 126 | dprint(FD_RANDOM, "get_next_rand_offset: offset %llu busy\n", |
| 127 | (unsigned long long) *b); |
Jens Axboe | 51ede0b | 2012-11-22 13:50:29 +0100 | [diff] [blame] | 128 | |
Jens Axboe | 7ebd796 | 2012-11-28 21:24:46 +0100 | [diff] [blame] | 129 | *b = axmap_next_free(f->io_axmap, *b); |
Jens Axboe | 51ede0b | 2012-11-22 13:50:29 +0100 | [diff] [blame] | 130 | if (*b == (uint64_t) -1ULL) |
| 131 | return 1; |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 132 | ret: |
| 133 | return 0; |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 134 | } |
| 135 | |
Jens Axboe | 925fee3 | 2012-11-06 13:50:32 +0100 | [diff] [blame] | 136 | static int __get_next_rand_offset_zipf(struct thread_data *td, |
| 137 | struct fio_file *f, enum fio_ddir ddir, |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 138 | uint64_t *b) |
Jens Axboe | e25839d | 2012-11-06 10:49:42 +0100 | [diff] [blame] | 139 | { |
Jens Axboe | 9c6f631 | 2012-11-07 09:15:45 +0100 | [diff] [blame] | 140 | *b = zipf_next(&f->zipf); |
Jens Axboe | e25839d | 2012-11-06 10:49:42 +0100 | [diff] [blame] | 141 | return 0; |
| 142 | } |
| 143 | |
Jens Axboe | 925fee3 | 2012-11-06 13:50:32 +0100 | [diff] [blame] | 144 | static int __get_next_rand_offset_pareto(struct thread_data *td, |
| 145 | struct fio_file *f, enum fio_ddir ddir, |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 146 | uint64_t *b) |
Jens Axboe | 925fee3 | 2012-11-06 13:50:32 +0100 | [diff] [blame] | 147 | { |
Jens Axboe | 9c6f631 | 2012-11-07 09:15:45 +0100 | [diff] [blame] | 148 | *b = pareto_next(&f->zipf); |
Jens Axboe | 925fee3 | 2012-11-06 13:50:32 +0100 | [diff] [blame] | 149 | return 0; |
| 150 | } |
| 151 | |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 152 | static int flist_cmp(void *data, struct flist_head *a, struct flist_head *b) |
| 153 | { |
| 154 | struct rand_off *r1 = flist_entry(a, struct rand_off, list); |
| 155 | struct rand_off *r2 = flist_entry(b, struct rand_off, list); |
| 156 | |
| 157 | return r1->off - r2->off; |
| 158 | } |
| 159 | |
| 160 | static int get_off_from_method(struct thread_data *td, struct fio_file *f, |
| 161 | enum fio_ddir ddir, uint64_t *b) |
Jens Axboe | e25839d | 2012-11-06 10:49:42 +0100 | [diff] [blame] | 162 | { |
| 163 | if (td->o.random_distribution == FIO_RAND_DIST_RANDOM) |
| 164 | return __get_next_rand_offset(td, f, ddir, b); |
| 165 | else if (td->o.random_distribution == FIO_RAND_DIST_ZIPF) |
| 166 | return __get_next_rand_offset_zipf(td, f, ddir, b); |
Jens Axboe | 925fee3 | 2012-11-06 13:50:32 +0100 | [diff] [blame] | 167 | else if (td->o.random_distribution == FIO_RAND_DIST_PARETO) |
| 168 | return __get_next_rand_offset_pareto(td, f, ddir, b); |
Jens Axboe | e25839d | 2012-11-06 10:49:42 +0100 | [diff] [blame] | 169 | |
| 170 | log_err("fio: unknown random distribution: %d\n", td->o.random_distribution); |
| 171 | return 1; |
| 172 | } |
| 173 | |
Jens Axboe | bcd5abf | 2013-01-23 09:27:25 -0700 | [diff] [blame] | 174 | /* |
| 175 | * Sort the reads for a verify phase in batches of verifysort_nr, if |
| 176 | * specified. |
| 177 | */ |
| 178 | static inline int should_sort_io(struct thread_data *td) |
| 179 | { |
| 180 | if (!td->o.verifysort_nr || !td->o.do_verify) |
| 181 | return 0; |
| 182 | if (!td_random(td)) |
| 183 | return 0; |
| 184 | if (td->runstate != TD_VERIFYING) |
| 185 | return 0; |
| 186 | if (td->o.random_generator == FIO_RAND_GEN_TAUSWORTHE) |
| 187 | return 0; |
| 188 | |
| 189 | return 1; |
| 190 | } |
| 191 | |
Jens Axboe | d947227 | 2013-07-25 10:20:45 -0600 | [diff] [blame] | 192 | static int should_do_random(struct thread_data *td, enum fio_ddir ddir) |
Jens Axboe | 211c9b8 | 2013-04-26 08:56:17 -0600 | [diff] [blame] | 193 | { |
| 194 | unsigned int v; |
| 195 | unsigned long r; |
| 196 | |
Jens Axboe | d947227 | 2013-07-25 10:20:45 -0600 | [diff] [blame] | 197 | if (td->o.perc_rand[ddir] == 100) |
Jens Axboe | 211c9b8 | 2013-04-26 08:56:17 -0600 | [diff] [blame] | 198 | return 1; |
| 199 | |
Jens Axboe | f678701 | 2014-11-05 18:39:23 -0700 | [diff] [blame] | 200 | r = __rand(&td->seq_rand_state[ddir]); |
Jens Axboe | 559073f | 2014-11-05 18:34:02 -0700 | [diff] [blame] | 201 | v = 1 + (int) (100.0 * (r / (FRAND_MAX + 1.0))); |
Jens Axboe | 211c9b8 | 2013-04-26 08:56:17 -0600 | [diff] [blame] | 202 | |
Jens Axboe | d947227 | 2013-07-25 10:20:45 -0600 | [diff] [blame] | 203 | return v <= td->o.perc_rand[ddir]; |
Jens Axboe | 211c9b8 | 2013-04-26 08:56:17 -0600 | [diff] [blame] | 204 | } |
| 205 | |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 206 | static int get_next_rand_offset(struct thread_data *td, struct fio_file *f, |
| 207 | enum fio_ddir ddir, uint64_t *b) |
| 208 | { |
| 209 | struct rand_off *r; |
| 210 | int i, ret = 1; |
| 211 | |
Jens Axboe | bcd5abf | 2013-01-23 09:27:25 -0700 | [diff] [blame] | 212 | if (!should_sort_io(td)) |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 213 | return get_off_from_method(td, f, ddir, b); |
| 214 | |
| 215 | if (!flist_empty(&td->next_rand_list)) { |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 216 | fetch: |
Jens Axboe | 12dbd06 | 2014-07-03 21:19:57 -0600 | [diff] [blame] | 217 | r = flist_first_entry(&td->next_rand_list, struct rand_off, list); |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 218 | flist_del(&r->list); |
| 219 | *b = r->off; |
| 220 | free(r); |
| 221 | return 0; |
| 222 | } |
| 223 | |
| 224 | for (i = 0; i < td->o.verifysort_nr; i++) { |
| 225 | r = malloc(sizeof(*r)); |
| 226 | |
| 227 | ret = get_off_from_method(td, f, ddir, &r->off); |
| 228 | if (ret) { |
| 229 | free(r); |
| 230 | break; |
| 231 | } |
| 232 | |
| 233 | flist_add(&r->list, &td->next_rand_list); |
| 234 | } |
| 235 | |
| 236 | if (ret && !i) |
| 237 | return ret; |
| 238 | |
| 239 | assert(!flist_empty(&td->next_rand_list)); |
| 240 | flist_sort(NULL, &td->next_rand_list, flist_cmp); |
| 241 | goto fetch; |
| 242 | } |
| 243 | |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 244 | static int get_next_rand_block(struct thread_data *td, struct fio_file *f, |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 245 | enum fio_ddir ddir, uint64_t *b) |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 246 | { |
Daniel Ehrenberg | c04e466 | 2012-03-16 18:54:15 +0100 | [diff] [blame] | 247 | if (!get_next_rand_offset(td, f, ddir, b)) |
| 248 | return 0; |
| 249 | |
| 250 | if (td->o.time_based) { |
Jens Axboe | 33c4881 | 2013-01-21 09:46:06 -0700 | [diff] [blame] | 251 | fio_file_reset(td, f); |
Daniel Ehrenberg | c04e466 | 2012-03-16 18:54:15 +0100 | [diff] [blame] | 252 | if (!get_next_rand_offset(td, f, ddir, b)) |
| 253 | return 0; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 254 | } |
| 255 | |
Daniel Ehrenberg | c04e466 | 2012-03-16 18:54:15 +0100 | [diff] [blame] | 256 | dprint(FD_IO, "%s: rand offset failed, last=%llu, size=%llu\n", |
Jens Axboe | 08a99be | 2014-12-14 19:01:24 -0700 | [diff] [blame] | 257 | f->file_name, (unsigned long long) f->last_pos[ddir], |
Jens Axboe | 4b91ee8 | 2013-02-25 10:18:33 +0100 | [diff] [blame] | 258 | (unsigned long long) f->real_file_size); |
Daniel Ehrenberg | c04e466 | 2012-03-16 18:54:15 +0100 | [diff] [blame] | 259 | return 1; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 260 | } |
| 261 | |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 262 | static int get_next_seq_offset(struct thread_data *td, struct fio_file *f, |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 263 | enum fio_ddir ddir, uint64_t *offset) |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 264 | { |
Jens Axboe | 8a42394 | 2014-09-28 16:18:43 -0600 | [diff] [blame] | 265 | struct thread_options *o = &td->o; |
| 266 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 267 | assert(ddir_rw(ddir)); |
| 268 | |
Jens Axboe | 08a99be | 2014-12-14 19:01:24 -0700 | [diff] [blame] | 269 | if (f->last_pos[ddir] >= f->io_size + get_start_offset(td, f) && |
Jens Axboe | 8a42394 | 2014-09-28 16:18:43 -0600 | [diff] [blame] | 270 | o->time_based) |
Jens Axboe | 08a99be | 2014-12-14 19:01:24 -0700 | [diff] [blame] | 271 | f->last_pos[ddir] = f->last_pos[ddir] - f->io_size; |
Daniel Ehrenberg | c04e466 | 2012-03-16 18:54:15 +0100 | [diff] [blame] | 272 | |
Jens Axboe | 08a99be | 2014-12-14 19:01:24 -0700 | [diff] [blame] | 273 | if (f->last_pos[ddir] < f->real_file_size) { |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 274 | uint64_t pos; |
Jens Axboe | 059b080 | 2011-08-25 09:09:37 +0200 | [diff] [blame] | 275 | |
Jens Axboe | 08a99be | 2014-12-14 19:01:24 -0700 | [diff] [blame] | 276 | if (f->last_pos[ddir] == f->file_offset && o->ddir_seq_add < 0) |
| 277 | f->last_pos[ddir] = f->real_file_size; |
Jens Axboe | a66da7a | 2011-08-31 13:14:12 -0600 | [diff] [blame] | 278 | |
Jens Axboe | 08a99be | 2014-12-14 19:01:24 -0700 | [diff] [blame] | 279 | pos = f->last_pos[ddir] - f->file_offset; |
Jens Axboe | 8a42394 | 2014-09-28 16:18:43 -0600 | [diff] [blame] | 280 | if (pos && o->ddir_seq_add) { |
| 281 | pos += o->ddir_seq_add; |
| 282 | |
| 283 | /* |
| 284 | * If we reach beyond the end of the file |
| 285 | * with holed IO, wrap around to the |
| 286 | * beginning again. |
| 287 | */ |
| 288 | if (pos >= f->real_file_size) |
| 289 | pos = f->file_offset; |
| 290 | } |
Jens Axboe | 059b080 | 2011-08-25 09:09:37 +0200 | [diff] [blame] | 291 | |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 292 | *offset = pos; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 293 | return 0; |
| 294 | } |
| 295 | |
| 296 | return 1; |
| 297 | } |
| 298 | |
| 299 | static int get_next_block(struct thread_data *td, struct io_u *io_u, |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 300 | enum fio_ddir ddir, int rw_seq, |
| 301 | unsigned int *is_random) |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 302 | { |
| 303 | struct fio_file *f = io_u->file; |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 304 | uint64_t b, offset; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 305 | int ret; |
| 306 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 307 | assert(ddir_rw(ddir)); |
| 308 | |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 309 | b = offset = -1ULL; |
| 310 | |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 311 | if (rw_seq) { |
Jens Axboe | 211c9b8 | 2013-04-26 08:56:17 -0600 | [diff] [blame] | 312 | if (td_random(td)) { |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 313 | if (should_do_random(td, ddir)) { |
Jens Axboe | 211c9b8 | 2013-04-26 08:56:17 -0600 | [diff] [blame] | 314 | ret = get_next_rand_block(td, f, ddir, &b); |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 315 | *is_random = 1; |
| 316 | } else { |
| 317 | *is_random = 0; |
Jens Axboe | 211c9b8 | 2013-04-26 08:56:17 -0600 | [diff] [blame] | 318 | io_u->flags |= IO_U_F_BUSY_OK; |
| 319 | ret = get_next_seq_offset(td, f, ddir, &offset); |
| 320 | if (ret) |
| 321 | ret = get_next_rand_block(td, f, ddir, &b); |
| 322 | } |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 323 | } else { |
| 324 | *is_random = 0; |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 325 | ret = get_next_seq_offset(td, f, ddir, &offset); |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 326 | } |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 327 | } else { |
| 328 | io_u->flags |= IO_U_F_BUSY_OK; |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 329 | *is_random = 0; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 330 | |
| 331 | if (td->o.rw_seq == RW_SEQ_SEQ) { |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 332 | ret = get_next_seq_offset(td, f, ddir, &offset); |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 333 | if (ret) { |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 334 | ret = get_next_rand_block(td, f, ddir, &b); |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 335 | *is_random = 0; |
| 336 | } |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 337 | } else if (td->o.rw_seq == RW_SEQ_IDENT) { |
Jens Axboe | 08a99be | 2014-12-14 19:01:24 -0700 | [diff] [blame] | 338 | if (f->last_start[ddir] != -1ULL) |
| 339 | offset = f->last_start[ddir] - f->file_offset; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 340 | else |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 341 | offset = 0; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 342 | ret = 0; |
| 343 | } else { |
| 344 | log_err("fio: unknown rw_seq=%d\n", td->o.rw_seq); |
| 345 | ret = 1; |
| 346 | } |
| 347 | } |
Bruce Cran | 6d68b99 | 2013-01-13 17:21:58 +0000 | [diff] [blame] | 348 | |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 349 | if (!ret) { |
| 350 | if (offset != -1ULL) |
| 351 | io_u->offset = offset; |
| 352 | else if (b != -1ULL) |
| 353 | io_u->offset = b * td->o.ba[ddir]; |
| 354 | else { |
Jens Axboe | 4e0a8fa | 2013-04-15 11:40:57 +0200 | [diff] [blame] | 355 | log_err("fio: bug in offset generation: offset=%llu, b=%llu\n", (unsigned long long) offset, (unsigned long long) b); |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 356 | ret = 1; |
| 357 | } |
| 358 | } |
| 359 | |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 360 | return ret; |
| 361 | } |
| 362 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 363 | /* |
| 364 | * For random io, generate a random new block and see if it's used. Repeat |
| 365 | * until we find a free one. For sequential io, just return the end of |
| 366 | * the last io issued. |
| 367 | */ |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 368 | static int __get_next_offset(struct thread_data *td, struct io_u *io_u, |
| 369 | unsigned int *is_random) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 370 | { |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 371 | struct fio_file *f = io_u->file; |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 372 | enum fio_ddir ddir = io_u->ddir; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 373 | int rw_seq_hit = 0; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 374 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 375 | assert(ddir_rw(ddir)); |
| 376 | |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 377 | if (td->o.ddir_seq_nr && !--td->ddir_seq_nr) { |
| 378 | rw_seq_hit = 1; |
Jens Axboe | 5736c10 | 2010-07-20 12:03:25 -0600 | [diff] [blame] | 379 | td->ddir_seq_nr = td->o.ddir_seq_nr; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 380 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 381 | |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 382 | if (get_next_block(td, io_u, ddir, rw_seq_hit, is_random)) |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 383 | return 1; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 384 | |
Jens Axboe | 009bd84 | 2008-05-15 10:19:46 +0200 | [diff] [blame] | 385 | if (io_u->offset >= f->io_size) { |
| 386 | dprint(FD_IO, "get_next_offset: offset %llu >= io_size %llu\n", |
Jens Axboe | 4b91ee8 | 2013-02-25 10:18:33 +0100 | [diff] [blame] | 387 | (unsigned long long) io_u->offset, |
| 388 | (unsigned long long) f->io_size); |
Jens Axboe | 009bd84 | 2008-05-15 10:19:46 +0200 | [diff] [blame] | 389 | return 1; |
| 390 | } |
| 391 | |
| 392 | io_u->offset += f->file_offset; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 393 | if (io_u->offset >= f->real_file_size) { |
| 394 | dprint(FD_IO, "get_next_offset: offset %llu >= size %llu\n", |
Jens Axboe | 4b91ee8 | 2013-02-25 10:18:33 +0100 | [diff] [blame] | 395 | (unsigned long long) io_u->offset, |
| 396 | (unsigned long long) f->real_file_size); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 397 | return 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 398 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 399 | |
| 400 | return 0; |
| 401 | } |
| 402 | |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 403 | static int get_next_offset(struct thread_data *td, struct io_u *io_u, |
| 404 | unsigned int *is_random) |
Jens Axboe | 15dc193 | 2010-03-05 10:59:06 +0100 | [diff] [blame] | 405 | { |
Jens Axboe | d72be54 | 2012-11-30 19:37:46 +0100 | [diff] [blame] | 406 | if (td->flags & TD_F_PROFILE_OPS) { |
| 407 | struct prof_io_ops *ops = &td->prof_io_ops; |
Jens Axboe | 7eb3657 | 2010-03-08 13:58:49 +0100 | [diff] [blame] | 408 | |
Jens Axboe | d72be54 | 2012-11-30 19:37:46 +0100 | [diff] [blame] | 409 | if (ops->fill_io_u_off) |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 410 | return ops->fill_io_u_off(td, io_u, is_random); |
Jens Axboe | d72be54 | 2012-11-30 19:37:46 +0100 | [diff] [blame] | 411 | } |
Jens Axboe | 15dc193 | 2010-03-05 10:59:06 +0100 | [diff] [blame] | 412 | |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 413 | return __get_next_offset(td, io_u, is_random); |
Jens Axboe | 15dc193 | 2010-03-05 10:59:06 +0100 | [diff] [blame] | 414 | } |
| 415 | |
Jens Axboe | 7994412 | 2011-05-24 11:26:16 +0200 | [diff] [blame] | 416 | static inline int io_u_fits(struct thread_data *td, struct io_u *io_u, |
| 417 | unsigned int buflen) |
| 418 | { |
| 419 | struct fio_file *f = io_u->file; |
| 420 | |
Jens Axboe | bedc9dc | 2014-03-17 12:51:09 -0600 | [diff] [blame] | 421 | return io_u->offset + buflen <= f->io_size + get_start_offset(td, f); |
Jens Axboe | 7994412 | 2011-05-24 11:26:16 +0200 | [diff] [blame] | 422 | } |
| 423 | |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 424 | static unsigned int __get_next_buflen(struct thread_data *td, struct io_u *io_u, |
| 425 | unsigned int is_random) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 426 | { |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 427 | int ddir = io_u->ddir; |
Jens Axboe | 24d23ca | 2012-11-13 08:31:24 -0700 | [diff] [blame] | 428 | unsigned int buflen = 0; |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 429 | unsigned int minbs, maxbs; |
Jens Axboe | 559073f | 2014-11-05 18:34:02 -0700 | [diff] [blame] | 430 | unsigned long r; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 431 | |
Erwan Velu | 9ee1c64 | 2014-04-02 10:51:16 +0200 | [diff] [blame] | 432 | assert(ddir_rw(ddir)); |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 433 | |
| 434 | if (td->o.bs_is_seq_rand) |
| 435 | ddir = is_random ? DDIR_WRITE: DDIR_READ; |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 436 | |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 437 | minbs = td->o.min_bs[ddir]; |
| 438 | maxbs = td->o.max_bs[ddir]; |
| 439 | |
Jens Axboe | 7994412 | 2011-05-24 11:26:16 +0200 | [diff] [blame] | 440 | if (minbs == maxbs) |
| 441 | return minbs; |
| 442 | |
Jens Axboe | 52c5802 | 2012-02-06 21:58:56 +0100 | [diff] [blame] | 443 | /* |
| 444 | * If we can't satisfy the min block size from here, then fail |
| 445 | */ |
| 446 | if (!io_u_fits(td, io_u, minbs)) |
| 447 | return 0; |
| 448 | |
Jens Axboe | 7994412 | 2011-05-24 11:26:16 +0200 | [diff] [blame] | 449 | do { |
Jens Axboe | f678701 | 2014-11-05 18:39:23 -0700 | [diff] [blame] | 450 | r = __rand(&td->bsrange_state); |
Jens Axboe | 4c07ad8 | 2011-03-28 09:51:09 +0200 | [diff] [blame] | 451 | |
Jens Axboe | 720e84a | 2009-04-21 08:29:55 +0200 | [diff] [blame] | 452 | if (!td->o.bssplit_nr[ddir]) { |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 453 | buflen = 1 + (unsigned int) ((double) maxbs * |
Jens Axboe | 559073f | 2014-11-05 18:34:02 -0700 | [diff] [blame] | 454 | (r / (FRAND_MAX + 1.0))); |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 455 | if (buflen < minbs) |
| 456 | buflen = minbs; |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 457 | } else { |
Jens Axboe | 564ca97 | 2007-12-14 12:21:19 +0100 | [diff] [blame] | 458 | long perc = 0; |
| 459 | unsigned int i; |
| 460 | |
Jens Axboe | 720e84a | 2009-04-21 08:29:55 +0200 | [diff] [blame] | 461 | for (i = 0; i < td->o.bssplit_nr[ddir]; i++) { |
| 462 | struct bssplit *bsp = &td->o.bssplit[ddir][i]; |
Jens Axboe | 564ca97 | 2007-12-14 12:21:19 +0100 | [diff] [blame] | 463 | |
| 464 | buflen = bsp->bs; |
| 465 | perc += bsp->perc; |
Jens Axboe | 559073f | 2014-11-05 18:34:02 -0700 | [diff] [blame] | 466 | if ((r <= ((FRAND_MAX / 100L) * perc)) && |
Jens Axboe | 7994412 | 2011-05-24 11:26:16 +0200 | [diff] [blame] | 467 | io_u_fits(td, io_u, buflen)) |
Jens Axboe | 564ca97 | 2007-12-14 12:21:19 +0100 | [diff] [blame] | 468 | break; |
| 469 | } |
| 470 | } |
Jens Axboe | 7994412 | 2011-05-24 11:26:16 +0200 | [diff] [blame] | 471 | |
Josef Bacik | a9f70b1 | 2013-07-08 20:32:50 -0400 | [diff] [blame] | 472 | if (td->o.do_verify && td->o.verify != VERIFY_NONE) |
| 473 | buflen = (buflen + td->o.verify_interval - 1) & |
| 474 | ~(td->o.verify_interval - 1); |
| 475 | |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 476 | if (!td->o.bs_unaligned && is_power_of_2(minbs)) |
| 477 | buflen = (buflen + minbs - 1) & ~(minbs - 1); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 478 | |
Jens Axboe | 7994412 | 2011-05-24 11:26:16 +0200 | [diff] [blame] | 479 | } while (!io_u_fits(td, io_u, buflen)); |
Jens Axboe | 6a5e688 | 2007-07-26 10:47:51 +0200 | [diff] [blame] | 480 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 481 | return buflen; |
| 482 | } |
| 483 | |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 484 | static unsigned int get_next_buflen(struct thread_data *td, struct io_u *io_u, |
| 485 | unsigned int is_random) |
Jens Axboe | 15dc193 | 2010-03-05 10:59:06 +0100 | [diff] [blame] | 486 | { |
Jens Axboe | d72be54 | 2012-11-30 19:37:46 +0100 | [diff] [blame] | 487 | if (td->flags & TD_F_PROFILE_OPS) { |
| 488 | struct prof_io_ops *ops = &td->prof_io_ops; |
Jens Axboe | 7eb3657 | 2010-03-08 13:58:49 +0100 | [diff] [blame] | 489 | |
Jens Axboe | d72be54 | 2012-11-30 19:37:46 +0100 | [diff] [blame] | 490 | if (ops->fill_io_u_size) |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 491 | return ops->fill_io_u_size(td, io_u, is_random); |
Jens Axboe | d72be54 | 2012-11-30 19:37:46 +0100 | [diff] [blame] | 492 | } |
Jens Axboe | 15dc193 | 2010-03-05 10:59:06 +0100 | [diff] [blame] | 493 | |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 494 | return __get_next_buflen(td, io_u, is_random); |
Jens Axboe | 15dc193 | 2010-03-05 10:59:06 +0100 | [diff] [blame] | 495 | } |
| 496 | |
Jens Axboe | afe24a5 | 2007-03-16 20:27:27 +0100 | [diff] [blame] | 497 | static void set_rwmix_bytes(struct thread_data *td) |
| 498 | { |
Jens Axboe | afe24a5 | 2007-03-16 20:27:27 +0100 | [diff] [blame] | 499 | unsigned int diff; |
| 500 | |
| 501 | /* |
| 502 | * we do time or byte based switch. this is needed because |
| 503 | * buffered writes may issue a lot quicker than they complete, |
| 504 | * whereas reads do not. |
| 505 | */ |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 506 | diff = td->o.rwmix[td->rwmix_ddir ^ 1]; |
Jens Axboe | 04c540d | 2008-05-28 10:35:26 +0200 | [diff] [blame] | 507 | td->rwmix_issues = (td->io_issues[td->rwmix_ddir] * diff) / 100; |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 508 | } |
| 509 | |
| 510 | static inline enum fio_ddir get_rand_ddir(struct thread_data *td) |
| 511 | { |
| 512 | unsigned int v; |
Jens Axboe | 1294c3e | 2011-05-11 08:15:18 +0200 | [diff] [blame] | 513 | unsigned long r; |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 514 | |
Jens Axboe | f678701 | 2014-11-05 18:39:23 -0700 | [diff] [blame] | 515 | r = __rand(&td->rwmix_state); |
Jens Axboe | 559073f | 2014-11-05 18:34:02 -0700 | [diff] [blame] | 516 | v = 1 + (int) (100.0 * (r / (FRAND_MAX + 1.0))); |
Jens Axboe | 4c07ad8 | 2011-03-28 09:51:09 +0200 | [diff] [blame] | 517 | |
Jens Axboe | 04c540d | 2008-05-28 10:35:26 +0200 | [diff] [blame] | 518 | if (v <= td->o.rwmix[DDIR_READ]) |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 519 | return DDIR_READ; |
| 520 | |
| 521 | return DDIR_WRITE; |
Jens Axboe | afe24a5 | 2007-03-16 20:27:27 +0100 | [diff] [blame] | 522 | } |
| 523 | |
Jens Axboe | 002e718 | 2013-05-17 12:39:53 +0200 | [diff] [blame] | 524 | void io_u_quiesce(struct thread_data *td) |
| 525 | { |
| 526 | /* |
| 527 | * We are going to sleep, ensure that we flush anything pending as |
| 528 | * not to skew our latency numbers. |
| 529 | * |
| 530 | * Changed to only monitor 'in flight' requests here instead of the |
| 531 | * td->cur_depth, b/c td->cur_depth does not accurately represent |
| 532 | * io's that have been actually submitted to an async engine, |
| 533 | * and cur_depth is meaningless for sync engines. |
| 534 | */ |
Jens Axboe | 7e63b3d | 2015-01-15 10:39:12 -0700 | [diff] [blame] | 535 | if (td->io_u_queued || td->cur_depth) { |
| 536 | int fio_unused ret; |
| 537 | |
| 538 | ret = td_io_commit(td); |
| 539 | } |
| 540 | |
Jens Axboe | 002e718 | 2013-05-17 12:39:53 +0200 | [diff] [blame] | 541 | while (td->io_u_in_flight) { |
| 542 | int fio_unused ret; |
| 543 | |
| 544 | ret = io_u_queued_complete(td, 1, NULL); |
| 545 | } |
| 546 | } |
| 547 | |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 548 | static enum fio_ddir rate_ddir(struct thread_data *td, enum fio_ddir ddir) |
| 549 | { |
| 550 | enum fio_ddir odir = ddir ^ 1; |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 551 | long usec; |
| 552 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 553 | assert(ddir_rw(ddir)); |
| 554 | |
Jens Axboe | 315fcfe | 2013-02-08 19:05:25 +0100 | [diff] [blame] | 555 | if (td->rate_pending_usleep[ddir] <= 0) |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 556 | return ddir; |
| 557 | |
| 558 | /* |
| 559 | * We have too much pending sleep in this direction. See if we |
| 560 | * should switch. |
| 561 | */ |
Jens Axboe | 315fcfe | 2013-02-08 19:05:25 +0100 | [diff] [blame] | 562 | if (td_rw(td) && td->o.rwmix[odir]) { |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 563 | /* |
| 564 | * Other direction does not have too much pending, switch |
| 565 | */ |
| 566 | if (td->rate_pending_usleep[odir] < 100000) |
| 567 | return odir; |
| 568 | |
| 569 | /* |
| 570 | * Both directions have pending sleep. Sleep the minimum time |
| 571 | * and deduct from both. |
| 572 | */ |
| 573 | if (td->rate_pending_usleep[ddir] <= |
| 574 | td->rate_pending_usleep[odir]) { |
| 575 | usec = td->rate_pending_usleep[ddir]; |
| 576 | } else { |
| 577 | usec = td->rate_pending_usleep[odir]; |
| 578 | ddir = odir; |
| 579 | } |
| 580 | } else |
| 581 | usec = td->rate_pending_usleep[ddir]; |
| 582 | |
Jens Axboe | 002e718 | 2013-05-17 12:39:53 +0200 | [diff] [blame] | 583 | io_u_quiesce(td); |
Jens Axboe | 78c1eda | 2011-08-30 15:34:14 -0600 | [diff] [blame] | 584 | |
Jens Axboe | 7e63b3d | 2015-01-15 10:39:12 -0700 | [diff] [blame] | 585 | usec = usec_sleep(td, usec); |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 586 | |
| 587 | td->rate_pending_usleep[ddir] -= usec; |
| 588 | |
| 589 | odir = ddir ^ 1; |
| 590 | if (td_rw(td) && __should_check_rate(td, odir)) |
| 591 | td->rate_pending_usleep[odir] -= usec; |
Jens Axboe | 0b9d69e | 2009-09-11 22:29:54 +0200 | [diff] [blame] | 592 | |
Jens Axboe | d4eb465 | 2014-11-10 15:40:24 -0700 | [diff] [blame] | 593 | if (ddir == DDIR_TRIM) |
| 594 | return DDIR_TRIM; |
Jens Axboe | e0224c6 | 2013-02-07 19:55:24 +0100 | [diff] [blame] | 595 | |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 596 | return ddir; |
| 597 | } |
| 598 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 599 | /* |
| 600 | * Return the data direction for the next io_u. If the job is a |
| 601 | * mixed read/write workload, check the rwmix cycle and switch if |
| 602 | * necessary. |
| 603 | */ |
Jens Axboe | 1e97cce | 2006-12-05 11:44:16 +0100 | [diff] [blame] | 604 | static enum fio_ddir get_rw_ddir(struct thread_data *td) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 605 | { |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 606 | enum fio_ddir ddir; |
| 607 | |
Jens Axboe | 5f9099e | 2009-06-16 22:40:26 +0200 | [diff] [blame] | 608 | /* |
| 609 | * see if it's time to fsync |
| 610 | */ |
| 611 | if (td->o.fsync_blocks && |
| 612 | !(td->io_issues[DDIR_WRITE] % td->o.fsync_blocks) && |
| 613 | td->io_issues[DDIR_WRITE] && should_fsync(td)) |
| 614 | return DDIR_SYNC; |
| 615 | |
| 616 | /* |
| 617 | * see if it's time to fdatasync |
| 618 | */ |
| 619 | if (td->o.fdatasync_blocks && |
| 620 | !(td->io_issues[DDIR_WRITE] % td->o.fdatasync_blocks) && |
| 621 | td->io_issues[DDIR_WRITE] && should_fsync(td)) |
| 622 | return DDIR_DATASYNC; |
| 623 | |
Jens Axboe | 44f2969 | 2010-03-09 20:09:44 +0100 | [diff] [blame] | 624 | /* |
| 625 | * see if it's time to sync_file_range |
| 626 | */ |
| 627 | if (td->sync_file_range_nr && |
| 628 | !(td->io_issues[DDIR_WRITE] % td->sync_file_range_nr) && |
| 629 | td->io_issues[DDIR_WRITE] && should_fsync(td)) |
| 630 | return DDIR_SYNC_FILE_RANGE; |
| 631 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 632 | if (td_rw(td)) { |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 633 | /* |
| 634 | * Check if it's time to seed a new data direction. |
| 635 | */ |
Jens Axboe | e492866 | 2008-04-07 09:19:46 +0200 | [diff] [blame] | 636 | if (td->io_issues[td->rwmix_ddir] >= td->rwmix_issues) { |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 637 | /* |
| 638 | * Put a top limit on how many bytes we do for |
| 639 | * one data direction, to avoid overflowing the |
| 640 | * ranges too much |
| 641 | */ |
| 642 | ddir = get_rand_ddir(td); |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 643 | |
| 644 | if (ddir != td->rwmix_ddir) |
| 645 | set_rwmix_bytes(td); |
| 646 | |
| 647 | td->rwmix_ddir = ddir; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 648 | } |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 649 | ddir = td->rwmix_ddir; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 650 | } else if (td_read(td)) |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 651 | ddir = DDIR_READ; |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 652 | else if (td_write(td)) |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 653 | ddir = DDIR_WRITE; |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 654 | else |
| 655 | ddir = DDIR_TRIM; |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 656 | |
| 657 | td->rwmix_ddir = rate_ddir(td, ddir); |
| 658 | return td->rwmix_ddir; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 659 | } |
| 660 | |
Jens Axboe | 1ef2b6b | 2010-10-08 15:07:01 +0200 | [diff] [blame] | 661 | static void set_rw_ddir(struct thread_data *td, struct io_u *io_u) |
| 662 | { |
Jens Axboe | bcd5abf | 2013-01-23 09:27:25 -0700 | [diff] [blame] | 663 | io_u->ddir = io_u->acct_ddir = get_rw_ddir(td); |
Jens Axboe | 1ef2b6b | 2010-10-08 15:07:01 +0200 | [diff] [blame] | 664 | |
| 665 | if (io_u->ddir == DDIR_WRITE && (td->io_ops->flags & FIO_BARRIER) && |
| 666 | td->o.barrier_blocks && |
| 667 | !(td->io_issues[DDIR_WRITE] % td->o.barrier_blocks) && |
| 668 | td->io_issues[DDIR_WRITE]) |
| 669 | io_u->flags |= IO_U_F_BARRIER; |
| 670 | } |
| 671 | |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 672 | void put_file_log(struct thread_data *td, struct fio_file *f) |
Jens Axboe | 60f2c65 | 2008-05-16 12:31:36 +0200 | [diff] [blame] | 673 | { |
Jens Axboe | 71b84ca | 2014-04-14 12:01:45 -0600 | [diff] [blame] | 674 | unsigned int ret = put_file(td, f); |
Jens Axboe | 60f2c65 | 2008-05-16 12:31:36 +0200 | [diff] [blame] | 675 | |
| 676 | if (ret) |
| 677 | td_verror(td, ret, "file close"); |
| 678 | } |
| 679 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 680 | void put_io_u(struct thread_data *td, struct io_u *io_u) |
| 681 | { |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 682 | td_io_u_lock(td); |
| 683 | |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 684 | if (io_u->file && !(io_u->flags & IO_U_F_NO_FILE_PUT)) |
Jens Axboe | 60f2c65 | 2008-05-16 12:31:36 +0200 | [diff] [blame] | 685 | put_file_log(td, io_u->file); |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 686 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 687 | io_u->file = NULL; |
Steven Lang | d7ee2a7 | 2011-10-26 09:46:50 +0200 | [diff] [blame] | 688 | io_u->flags |= IO_U_F_FREE; |
| 689 | |
Radha Ramachandran | 0c41214 | 2009-11-03 21:45:31 +0100 | [diff] [blame] | 690 | if (io_u->flags & IO_U_F_IN_CUR_DEPTH) |
| 691 | td->cur_depth--; |
Jens Axboe | 2ae0b20 | 2013-05-28 14:16:55 +0200 | [diff] [blame] | 692 | io_u_qpush(&td->io_u_freelist, io_u); |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 693 | td_io_u_unlock(td); |
| 694 | td_io_u_free_notify(td); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 695 | } |
| 696 | |
Radha Ramachandran | f2bba18 | 2009-06-15 08:40:16 +0200 | [diff] [blame] | 697 | void clear_io_u(struct thread_data *td, struct io_u *io_u) |
| 698 | { |
| 699 | io_u->flags &= ~IO_U_F_FLIGHT; |
| 700 | put_io_u(td, io_u); |
| 701 | } |
| 702 | |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 703 | void requeue_io_u(struct thread_data *td, struct io_u **io_u) |
| 704 | { |
| 705 | struct io_u *__io_u = *io_u; |
Jens Axboe | bcd5abf | 2013-01-23 09:27:25 -0700 | [diff] [blame] | 706 | enum fio_ddir ddir = acct_ddir(__io_u); |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 707 | |
Jens Axboe | 465221b | 2008-05-30 22:07:49 +0200 | [diff] [blame] | 708 | dprint(FD_IO, "requeue %p\n", __io_u); |
| 709 | |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 710 | td_io_u_lock(td); |
| 711 | |
Jens Axboe | 4d2e0f4 | 2007-02-24 13:31:57 +0100 | [diff] [blame] | 712 | __io_u->flags |= IO_U_F_FREE; |
Jens Axboe | bcd5abf | 2013-01-23 09:27:25 -0700 | [diff] [blame] | 713 | if ((__io_u->flags & IO_U_F_FLIGHT) && ddir_rw(ddir)) |
| 714 | td->io_issues[ddir]--; |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 715 | |
Jens Axboe | 4d2e0f4 | 2007-02-24 13:31:57 +0100 | [diff] [blame] | 716 | __io_u->flags &= ~IO_U_F_FLIGHT; |
Radha Ramachandran | 0c41214 | 2009-11-03 21:45:31 +0100 | [diff] [blame] | 717 | if (__io_u->flags & IO_U_F_IN_CUR_DEPTH) |
| 718 | td->cur_depth--; |
Jens Axboe | 2ae0b20 | 2013-05-28 14:16:55 +0200 | [diff] [blame] | 719 | |
| 720 | io_u_rpush(&td->io_u_requeues, __io_u); |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 721 | td_io_u_unlock(td); |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 722 | *io_u = NULL; |
| 723 | } |
| 724 | |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 725 | static int fill_io_u(struct thread_data *td, struct io_u *io_u) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 726 | { |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 727 | unsigned int is_random; |
| 728 | |
Jens Axboe | b4c5e1a | 2007-10-25 18:44:45 +0200 | [diff] [blame] | 729 | if (td->io_ops->flags & FIO_NOIO) |
| 730 | goto out; |
| 731 | |
Jens Axboe | 1ef2b6b | 2010-10-08 15:07:01 +0200 | [diff] [blame] | 732 | set_rw_ddir(td, io_u); |
Jens Axboe | a00735e | 2006-11-03 08:58:08 +0100 | [diff] [blame] | 733 | |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 734 | /* |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 735 | * fsync() or fdatasync() or trim etc, we are done |
Jens Axboe | 5f9099e | 2009-06-16 22:40:26 +0200 | [diff] [blame] | 736 | */ |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 737 | if (!ddir_rw(io_u->ddir)) |
Jens Axboe | 5f9099e | 2009-06-16 22:40:26 +0200 | [diff] [blame] | 738 | goto out; |
| 739 | |
| 740 | /* |
Jens Axboe | 48f5abd | 2007-07-20 13:25:04 +0200 | [diff] [blame] | 741 | * See if it's time to switch to a new zone |
| 742 | */ |
Jens Axboe | 13af05a | 2012-02-11 09:04:02 +0100 | [diff] [blame] | 743 | if (td->zone_bytes >= td->o.zone_size && td->o.zone_skip) { |
Jens Axboe | 418bf54 | 2014-09-28 16:20:58 -0600 | [diff] [blame] | 744 | struct fio_file *f = io_u->file; |
| 745 | |
Jens Axboe | 48f5abd | 2007-07-20 13:25:04 +0200 | [diff] [blame] | 746 | td->zone_bytes = 0; |
Jens Axboe | 418bf54 | 2014-09-28 16:20:58 -0600 | [diff] [blame] | 747 | f->file_offset += td->o.zone_range + td->o.zone_skip; |
| 748 | |
| 749 | /* |
| 750 | * Wrap from the beginning, if we exceed the file size |
| 751 | */ |
| 752 | if (f->file_offset >= f->real_file_size) |
| 753 | f->file_offset = f->real_file_size - f->file_offset; |
Jens Axboe | 08a99be | 2014-12-14 19:01:24 -0700 | [diff] [blame] | 754 | f->last_pos[io_u->ddir] = f->file_offset; |
Jens Axboe | 48f5abd | 2007-07-20 13:25:04 +0200 | [diff] [blame] | 755 | td->io_skip_bytes += td->o.zone_skip; |
| 756 | } |
| 757 | |
| 758 | /* |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 759 | * No log, let the seq/rand engine retrieve the next buflen and |
| 760 | * position. |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 761 | */ |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 762 | if (get_next_offset(td, io_u, &is_random)) { |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 763 | dprint(FD_IO, "io_u %p, failed getting offset\n", io_u); |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 764 | return 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 765 | } |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 766 | |
Jens Axboe | 6aca9b3 | 2013-07-25 12:45:26 -0600 | [diff] [blame] | 767 | io_u->buflen = get_next_buflen(td, io_u, is_random); |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 768 | if (!io_u->buflen) { |
| 769 | dprint(FD_IO, "io_u %p, failed getting buflen\n", io_u); |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 770 | return 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 771 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 772 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 773 | if (io_u->offset + io_u->buflen > io_u->file->real_file_size) { |
| 774 | dprint(FD_IO, "io_u %p, offset too large\n", io_u); |
Jens Axboe | 4b91ee8 | 2013-02-25 10:18:33 +0100 | [diff] [blame] | 775 | dprint(FD_IO, " off=%llu/%lu > %llu\n", |
| 776 | (unsigned long long) io_u->offset, io_u->buflen, |
| 777 | (unsigned long long) io_u->file->real_file_size); |
Jens Axboe | 6a5e688 | 2007-07-26 10:47:51 +0200 | [diff] [blame] | 778 | return 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 779 | } |
Jens Axboe | 6a5e688 | 2007-07-26 10:47:51 +0200 | [diff] [blame] | 780 | |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 781 | /* |
| 782 | * mark entry before potentially trimming io_u |
| 783 | */ |
Jens Axboe | 303032a | 2008-03-26 10:11:10 +0100 | [diff] [blame] | 784 | if (td_random(td) && file_randommap(td, io_u->file)) |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 785 | mark_random_map(td, io_u); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 786 | |
Jens Axboe | c38e946 | 2007-03-27 08:48:48 +0200 | [diff] [blame] | 787 | out: |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 788 | dprint_io_u(io_u, "fill_io_u"); |
Jens Axboe | d9d91e3 | 2008-01-31 13:25:42 +0100 | [diff] [blame] | 789 | td->zone_bytes += io_u->buflen; |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 790 | return 0; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 791 | } |
| 792 | |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 793 | static void __io_u_mark_map(unsigned int *map, unsigned int nr) |
| 794 | { |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 795 | int idx = 0; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 796 | |
| 797 | switch (nr) { |
| 798 | default: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 799 | idx = 6; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 800 | break; |
| 801 | case 33 ... 64: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 802 | idx = 5; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 803 | break; |
| 804 | case 17 ... 32: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 805 | idx = 4; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 806 | break; |
| 807 | case 9 ... 16: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 808 | idx = 3; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 809 | break; |
| 810 | case 5 ... 8: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 811 | idx = 2; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 812 | break; |
| 813 | case 1 ... 4: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 814 | idx = 1; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 815 | case 0: |
| 816 | break; |
| 817 | } |
| 818 | |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 819 | map[idx]++; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 820 | } |
| 821 | |
| 822 | void io_u_mark_submit(struct thread_data *td, unsigned int nr) |
| 823 | { |
| 824 | __io_u_mark_map(td->ts.io_u_submit, nr); |
| 825 | td->ts.total_submit++; |
| 826 | } |
| 827 | |
| 828 | void io_u_mark_complete(struct thread_data *td, unsigned int nr) |
| 829 | { |
| 830 | __io_u_mark_map(td->ts.io_u_complete, nr); |
| 831 | td->ts.total_complete++; |
| 832 | } |
| 833 | |
Jens Axboe | d800575 | 2008-05-15 09:49:09 +0200 | [diff] [blame] | 834 | void io_u_mark_depth(struct thread_data *td, unsigned int nr) |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 835 | { |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 836 | int idx = 0; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 837 | |
| 838 | switch (td->cur_depth) { |
| 839 | default: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 840 | idx = 6; |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 841 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 842 | case 32 ... 63: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 843 | idx = 5; |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 844 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 845 | case 16 ... 31: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 846 | idx = 4; |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 847 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 848 | case 8 ... 15: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 849 | idx = 3; |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 850 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 851 | case 4 ... 7: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 852 | idx = 2; |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 853 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 854 | case 2 ... 3: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 855 | idx = 1; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 856 | case 1: |
| 857 | break; |
| 858 | } |
| 859 | |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 860 | td->ts.io_u_map[idx] += nr; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 861 | } |
| 862 | |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 863 | static void io_u_mark_lat_usec(struct thread_data *td, unsigned long usec) |
| 864 | { |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 865 | int idx = 0; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 866 | |
| 867 | assert(usec < 1000); |
| 868 | |
| 869 | switch (usec) { |
| 870 | case 750 ... 999: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 871 | idx = 9; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 872 | break; |
| 873 | case 500 ... 749: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 874 | idx = 8; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 875 | break; |
| 876 | case 250 ... 499: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 877 | idx = 7; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 878 | break; |
| 879 | case 100 ... 249: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 880 | idx = 6; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 881 | break; |
| 882 | case 50 ... 99: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 883 | idx = 5; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 884 | break; |
| 885 | case 20 ... 49: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 886 | idx = 4; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 887 | break; |
| 888 | case 10 ... 19: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 889 | idx = 3; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 890 | break; |
| 891 | case 4 ... 9: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 892 | idx = 2; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 893 | break; |
| 894 | case 2 ... 3: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 895 | idx = 1; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 896 | case 0 ... 1: |
| 897 | break; |
| 898 | } |
| 899 | |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 900 | assert(idx < FIO_IO_U_LAT_U_NR); |
| 901 | td->ts.io_u_lat_u[idx]++; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 902 | } |
| 903 | |
| 904 | static void io_u_mark_lat_msec(struct thread_data *td, unsigned long msec) |
Jens Axboe | ec11830 | 2007-02-17 04:38:20 +0100 | [diff] [blame] | 905 | { |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 906 | int idx = 0; |
Jens Axboe | ec11830 | 2007-02-17 04:38:20 +0100 | [diff] [blame] | 907 | |
| 908 | switch (msec) { |
| 909 | default: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 910 | idx = 11; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 911 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 912 | case 1000 ... 1999: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 913 | idx = 10; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 914 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 915 | case 750 ... 999: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 916 | idx = 9; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 917 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 918 | case 500 ... 749: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 919 | idx = 8; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 920 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 921 | case 250 ... 499: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 922 | idx = 7; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 923 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 924 | case 100 ... 249: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 925 | idx = 6; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 926 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 927 | case 50 ... 99: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 928 | idx = 5; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 929 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 930 | case 20 ... 49: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 931 | idx = 4; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 932 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 933 | case 10 ... 19: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 934 | idx = 3; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 935 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 936 | case 4 ... 9: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 937 | idx = 2; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 938 | break; |
Jens Axboe | ec11830 | 2007-02-17 04:38:20 +0100 | [diff] [blame] | 939 | case 2 ... 3: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 940 | idx = 1; |
Jens Axboe | ec11830 | 2007-02-17 04:38:20 +0100 | [diff] [blame] | 941 | case 0 ... 1: |
| 942 | break; |
| 943 | } |
| 944 | |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 945 | assert(idx < FIO_IO_U_LAT_M_NR); |
| 946 | td->ts.io_u_lat_m[idx]++; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 947 | } |
| 948 | |
| 949 | static void io_u_mark_latency(struct thread_data *td, unsigned long usec) |
| 950 | { |
| 951 | if (usec < 1000) |
| 952 | io_u_mark_lat_usec(td, usec); |
| 953 | else |
| 954 | io_u_mark_lat_msec(td, usec / 1000); |
Jens Axboe | ec11830 | 2007-02-17 04:38:20 +0100 | [diff] [blame] | 955 | } |
| 956 | |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 957 | /* |
| 958 | * Get next file to service by choosing one at random |
| 959 | */ |
Jens Axboe | 2cc5293 | 2009-06-09 14:14:20 +0200 | [diff] [blame] | 960 | static struct fio_file *get_next_file_rand(struct thread_data *td, |
| 961 | enum fio_file_flags goodf, |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 962 | enum fio_file_flags badf) |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 963 | { |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 964 | struct fio_file *f; |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 965 | int fno; |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 966 | |
| 967 | do { |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 968 | int opened = 0; |
Jens Axboe | 1294c3e | 2011-05-11 08:15:18 +0200 | [diff] [blame] | 969 | unsigned long r; |
Jens Axboe | 7c83c08 | 2007-03-01 10:04:15 +0100 | [diff] [blame] | 970 | |
Jens Axboe | f678701 | 2014-11-05 18:39:23 -0700 | [diff] [blame] | 971 | r = __rand(&td->next_file_state); |
Jens Axboe | 559073f | 2014-11-05 18:34:02 -0700 | [diff] [blame] | 972 | fno = (unsigned int) ((double) td->o.nr_files |
Jens Axboe | 4c07ad8 | 2011-03-28 09:51:09 +0200 | [diff] [blame] | 973 | * (r / (FRAND_MAX + 1.0))); |
Jens Axboe | 4c07ad8 | 2011-03-28 09:51:09 +0200 | [diff] [blame] | 974 | |
Jens Axboe | 126d65c | 2008-03-01 18:04:31 +0100 | [diff] [blame] | 975 | f = td->files[fno]; |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 976 | if (fio_file_done(f)) |
Jens Axboe | 059e63c | 2007-03-27 20:34:47 +0200 | [diff] [blame] | 977 | continue; |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 978 | |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 979 | if (!fio_file_open(f)) { |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 980 | int err; |
| 981 | |
Jens Axboe | 002fe73 | 2014-02-11 08:31:13 -0700 | [diff] [blame] | 982 | if (td->nr_open_files >= td->o.open_files) |
| 983 | return ERR_PTR(-EBUSY); |
| 984 | |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 985 | err = td_io_open_file(td, f); |
| 986 | if (err) |
| 987 | continue; |
| 988 | opened = 1; |
| 989 | } |
| 990 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 991 | if ((!goodf || (f->flags & goodf)) && !(f->flags & badf)) { |
| 992 | dprint(FD_FILE, "get_next_file_rand: %p\n", f); |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 993 | return f; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 994 | } |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 995 | if (opened) |
| 996 | td_io_close_file(td, f); |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 997 | } while (1); |
| 998 | } |
| 999 | |
| 1000 | /* |
| 1001 | * Get next file to service by doing round robin between all available ones |
| 1002 | */ |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 1003 | static struct fio_file *get_next_file_rr(struct thread_data *td, int goodf, |
| 1004 | int badf) |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 1005 | { |
| 1006 | unsigned int old_next_file = td->next_file; |
| 1007 | struct fio_file *f; |
| 1008 | |
| 1009 | do { |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 1010 | int opened = 0; |
| 1011 | |
Jens Axboe | 126d65c | 2008-03-01 18:04:31 +0100 | [diff] [blame] | 1012 | f = td->files[td->next_file]; |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 1013 | |
| 1014 | td->next_file++; |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 1015 | if (td->next_file >= td->o.nr_files) |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 1016 | td->next_file = 0; |
| 1017 | |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 1018 | dprint(FD_FILE, "trying file %s %x\n", f->file_name, f->flags); |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 1019 | if (fio_file_done(f)) { |
Jens Axboe | d5ed68e | 2007-03-28 09:33:43 +0200 | [diff] [blame] | 1020 | f = NULL; |
Jens Axboe | 059e63c | 2007-03-27 20:34:47 +0200 | [diff] [blame] | 1021 | continue; |
Jens Axboe | d5ed68e | 2007-03-28 09:33:43 +0200 | [diff] [blame] | 1022 | } |
Jens Axboe | 059e63c | 2007-03-27 20:34:47 +0200 | [diff] [blame] | 1023 | |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 1024 | if (!fio_file_open(f)) { |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 1025 | int err; |
| 1026 | |
Jens Axboe | 002fe73 | 2014-02-11 08:31:13 -0700 | [diff] [blame] | 1027 | if (td->nr_open_files >= td->o.open_files) |
| 1028 | return ERR_PTR(-EBUSY); |
| 1029 | |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 1030 | err = td_io_open_file(td, f); |
Jens Axboe | b5696bf | 2009-03-04 16:03:49 +0100 | [diff] [blame] | 1031 | if (err) { |
| 1032 | dprint(FD_FILE, "error %d on open of %s\n", |
| 1033 | err, f->file_name); |
Jens Axboe | 87c27b4 | 2009-05-20 10:45:12 +0200 | [diff] [blame] | 1034 | f = NULL; |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 1035 | continue; |
Jens Axboe | b5696bf | 2009-03-04 16:03:49 +0100 | [diff] [blame] | 1036 | } |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 1037 | opened = 1; |
| 1038 | } |
| 1039 | |
Jens Axboe | 0b9d69e | 2009-09-11 22:29:54 +0200 | [diff] [blame] | 1040 | dprint(FD_FILE, "goodf=%x, badf=%x, ff=%x\n", goodf, badf, |
| 1041 | f->flags); |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 1042 | if ((!goodf || (f->flags & goodf)) && !(f->flags & badf)) |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 1043 | break; |
| 1044 | |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 1045 | if (opened) |
| 1046 | td_io_close_file(td, f); |
| 1047 | |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 1048 | f = NULL; |
| 1049 | } while (td->next_file != old_next_file); |
| 1050 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1051 | dprint(FD_FILE, "get_next_file_rr: %p\n", f); |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 1052 | return f; |
| 1053 | } |
| 1054 | |
Jens Axboe | 7eb3657 | 2010-03-08 13:58:49 +0100 | [diff] [blame] | 1055 | static struct fio_file *__get_next_file(struct thread_data *td) |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 1056 | { |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 1057 | struct fio_file *f; |
| 1058 | |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 1059 | assert(td->o.nr_files <= td->files_index); |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 1060 | |
Jens Axboe | b5696bf | 2009-03-04 16:03:49 +0100 | [diff] [blame] | 1061 | if (td->nr_done_files >= td->o.nr_files) { |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 1062 | dprint(FD_FILE, "get_next_file: nr_open=%d, nr_done=%d," |
| 1063 | " nr_files=%d\n", td->nr_open_files, |
| 1064 | td->nr_done_files, |
| 1065 | td->o.nr_files); |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 1066 | return NULL; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1067 | } |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 1068 | |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 1069 | f = td->file_service_file; |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 1070 | if (f && fio_file_open(f) && !fio_file_closing(f)) { |
Jens Axboe | a086c25 | 2009-03-04 08:27:37 +0100 | [diff] [blame] | 1071 | if (td->o.file_service_type == FIO_FSERVICE_SEQ) |
| 1072 | goto out; |
| 1073 | if (td->file_service_left--) |
| 1074 | goto out; |
| 1075 | } |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 1076 | |
Jens Axboe | a086c25 | 2009-03-04 08:27:37 +0100 | [diff] [blame] | 1077 | if (td->o.file_service_type == FIO_FSERVICE_RR || |
| 1078 | td->o.file_service_type == FIO_FSERVICE_SEQ) |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 1079 | f = get_next_file_rr(td, FIO_FILE_open, FIO_FILE_closing); |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 1080 | else |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 1081 | f = get_next_file_rand(td, FIO_FILE_open, FIO_FILE_closing); |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 1082 | |
Jens Axboe | 002fe73 | 2014-02-11 08:31:13 -0700 | [diff] [blame] | 1083 | if (IS_ERR(f)) |
| 1084 | return f; |
| 1085 | |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 1086 | td->file_service_file = f; |
| 1087 | td->file_service_left = td->file_service_nr - 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1088 | out: |
Jens Axboe | 0dac421 | 2014-02-25 13:43:17 -0800 | [diff] [blame] | 1089 | if (f) |
| 1090 | dprint(FD_FILE, "get_next_file: %p [%s]\n", f, f->file_name); |
| 1091 | else |
| 1092 | dprint(FD_FILE, "get_next_file: NULL\n"); |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 1093 | return f; |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 1094 | } |
| 1095 | |
Jens Axboe | 7eb3657 | 2010-03-08 13:58:49 +0100 | [diff] [blame] | 1096 | static struct fio_file *get_next_file(struct thread_data *td) |
| 1097 | { |
Andrey Kuzmin | 705fa7e | 2014-06-27 20:21:22 -0600 | [diff] [blame] | 1098 | if (td->flags & TD_F_PROFILE_OPS) { |
Jens Axboe | d72be54 | 2012-11-30 19:37:46 +0100 | [diff] [blame] | 1099 | struct prof_io_ops *ops = &td->prof_io_ops; |
Jens Axboe | 7eb3657 | 2010-03-08 13:58:49 +0100 | [diff] [blame] | 1100 | |
Jens Axboe | d72be54 | 2012-11-30 19:37:46 +0100 | [diff] [blame] | 1101 | if (ops->get_next_file) |
| 1102 | return ops->get_next_file(td); |
| 1103 | } |
Jens Axboe | 7eb3657 | 2010-03-08 13:58:49 +0100 | [diff] [blame] | 1104 | |
| 1105 | return __get_next_file(td); |
| 1106 | } |
| 1107 | |
Jens Axboe | 002fe73 | 2014-02-11 08:31:13 -0700 | [diff] [blame] | 1108 | static long set_io_u_file(struct thread_data *td, struct io_u *io_u) |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1109 | { |
| 1110 | struct fio_file *f; |
| 1111 | |
| 1112 | do { |
| 1113 | f = get_next_file(td); |
Jens Axboe | 002fe73 | 2014-02-11 08:31:13 -0700 | [diff] [blame] | 1114 | if (IS_ERR_OR_NULL(f)) |
| 1115 | return PTR_ERR(f); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1116 | |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1117 | io_u->file = f; |
| 1118 | get_file(f); |
| 1119 | |
| 1120 | if (!fill_io_u(td, io_u)) |
| 1121 | break; |
| 1122 | |
Jens Axboe | b5696bf | 2009-03-04 16:03:49 +0100 | [diff] [blame] | 1123 | put_file_log(td, f); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1124 | td_io_close_file(td, f); |
Jens Axboe | b5696bf | 2009-03-04 16:03:49 +0100 | [diff] [blame] | 1125 | io_u->file = NULL; |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 1126 | fio_file_set_done(f); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1127 | td->nr_done_files++; |
Jens Axboe | 0b9d69e | 2009-09-11 22:29:54 +0200 | [diff] [blame] | 1128 | dprint(FD_FILE, "%s: is done (%d of %d)\n", f->file_name, |
| 1129 | td->nr_done_files, td->o.nr_files); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1130 | } while (1); |
| 1131 | |
| 1132 | return 0; |
| 1133 | } |
| 1134 | |
Jens Axboe | 3e260a4 | 2013-12-09 12:38:53 -0700 | [diff] [blame] | 1135 | static void lat_fatal(struct thread_data *td, struct io_completion_data *icd, |
| 1136 | unsigned long tusec, unsigned long max_usec) |
| 1137 | { |
| 1138 | if (!td->error) |
| 1139 | log_err("fio: latency of %lu usec exceeds specified max (%lu usec)\n", tusec, max_usec); |
| 1140 | td_verror(td, ETIMEDOUT, "max latency exceeded"); |
| 1141 | icd->error = ETIMEDOUT; |
| 1142 | } |
| 1143 | |
| 1144 | static void lat_new_cycle(struct thread_data *td) |
| 1145 | { |
| 1146 | fio_gettime(&td->latency_ts, NULL); |
| 1147 | td->latency_ios = ddir_rw_sum(td->io_blocks); |
| 1148 | td->latency_failed = 0; |
| 1149 | } |
| 1150 | |
| 1151 | /* |
| 1152 | * We had an IO outside the latency target. Reduce the queue depth. If we |
| 1153 | * are at QD=1, then it's time to give up. |
| 1154 | */ |
| 1155 | static int __lat_target_failed(struct thread_data *td) |
| 1156 | { |
| 1157 | if (td->latency_qd == 1) |
| 1158 | return 1; |
| 1159 | |
| 1160 | td->latency_qd_high = td->latency_qd; |
Jens Axboe | 6bb5821 | 2014-02-21 13:55:31 -0800 | [diff] [blame] | 1161 | |
| 1162 | if (td->latency_qd == td->latency_qd_low) |
| 1163 | td->latency_qd_low--; |
| 1164 | |
Jens Axboe | 3e260a4 | 2013-12-09 12:38:53 -0700 | [diff] [blame] | 1165 | td->latency_qd = (td->latency_qd + td->latency_qd_low) / 2; |
| 1166 | |
| 1167 | dprint(FD_RATE, "Ramped down: %d %d %d\n", td->latency_qd_low, td->latency_qd, td->latency_qd_high); |
| 1168 | |
| 1169 | /* |
| 1170 | * When we ramp QD down, quiesce existing IO to prevent |
| 1171 | * a storm of ramp downs due to pending higher depth. |
| 1172 | */ |
| 1173 | io_u_quiesce(td); |
| 1174 | lat_new_cycle(td); |
| 1175 | return 0; |
| 1176 | } |
| 1177 | |
| 1178 | static int lat_target_failed(struct thread_data *td) |
| 1179 | { |
| 1180 | if (td->o.latency_percentile.u.f == 100.0) |
| 1181 | return __lat_target_failed(td); |
| 1182 | |
| 1183 | td->latency_failed++; |
| 1184 | return 0; |
| 1185 | } |
| 1186 | |
| 1187 | void lat_target_init(struct thread_data *td) |
| 1188 | { |
Jens Axboe | 6bb5821 | 2014-02-21 13:55:31 -0800 | [diff] [blame] | 1189 | td->latency_end_run = 0; |
| 1190 | |
Jens Axboe | 3e260a4 | 2013-12-09 12:38:53 -0700 | [diff] [blame] | 1191 | if (td->o.latency_target) { |
| 1192 | dprint(FD_RATE, "Latency target=%llu\n", td->o.latency_target); |
| 1193 | fio_gettime(&td->latency_ts, NULL); |
| 1194 | td->latency_qd = 1; |
| 1195 | td->latency_qd_high = td->o.iodepth; |
| 1196 | td->latency_qd_low = 1; |
| 1197 | td->latency_ios = ddir_rw_sum(td->io_blocks); |
| 1198 | } else |
| 1199 | td->latency_qd = td->o.iodepth; |
| 1200 | } |
| 1201 | |
Jens Axboe | 6bb5821 | 2014-02-21 13:55:31 -0800 | [diff] [blame] | 1202 | void lat_target_reset(struct thread_data *td) |
| 1203 | { |
| 1204 | if (!td->latency_end_run) |
| 1205 | lat_target_init(td); |
| 1206 | } |
| 1207 | |
Jens Axboe | 3e260a4 | 2013-12-09 12:38:53 -0700 | [diff] [blame] | 1208 | static void lat_target_success(struct thread_data *td) |
| 1209 | { |
| 1210 | const unsigned int qd = td->latency_qd; |
Jens Axboe | 6bb5821 | 2014-02-21 13:55:31 -0800 | [diff] [blame] | 1211 | struct thread_options *o = &td->o; |
Jens Axboe | 3e260a4 | 2013-12-09 12:38:53 -0700 | [diff] [blame] | 1212 | |
| 1213 | td->latency_qd_low = td->latency_qd; |
| 1214 | |
| 1215 | /* |
| 1216 | * If we haven't failed yet, we double up to a failing value instead |
| 1217 | * of bisecting from highest possible queue depth. If we have set |
| 1218 | * a limit other than td->o.iodepth, bisect between that. |
| 1219 | */ |
Jens Axboe | 6bb5821 | 2014-02-21 13:55:31 -0800 | [diff] [blame] | 1220 | if (td->latency_qd_high != o->iodepth) |
Jens Axboe | 3e260a4 | 2013-12-09 12:38:53 -0700 | [diff] [blame] | 1221 | td->latency_qd = (td->latency_qd + td->latency_qd_high) / 2; |
| 1222 | else |
| 1223 | td->latency_qd *= 2; |
| 1224 | |
Jens Axboe | 6bb5821 | 2014-02-21 13:55:31 -0800 | [diff] [blame] | 1225 | if (td->latency_qd > o->iodepth) |
| 1226 | td->latency_qd = o->iodepth; |
Jens Axboe | 3e260a4 | 2013-12-09 12:38:53 -0700 | [diff] [blame] | 1227 | |
| 1228 | dprint(FD_RATE, "Ramped up: %d %d %d\n", td->latency_qd_low, td->latency_qd, td->latency_qd_high); |
Jens Axboe | 6bb5821 | 2014-02-21 13:55:31 -0800 | [diff] [blame] | 1229 | |
Jens Axboe | 3e260a4 | 2013-12-09 12:38:53 -0700 | [diff] [blame] | 1230 | /* |
Jens Axboe | 6bb5821 | 2014-02-21 13:55:31 -0800 | [diff] [blame] | 1231 | * Same as last one, we are done. Let it run a latency cycle, so |
| 1232 | * we get only the results from the targeted depth. |
Jens Axboe | 3e260a4 | 2013-12-09 12:38:53 -0700 | [diff] [blame] | 1233 | */ |
Jens Axboe | 6bb5821 | 2014-02-21 13:55:31 -0800 | [diff] [blame] | 1234 | if (td->latency_qd == qd) { |
| 1235 | if (td->latency_end_run) { |
| 1236 | dprint(FD_RATE, "We are done\n"); |
| 1237 | td->done = 1; |
| 1238 | } else { |
| 1239 | dprint(FD_RATE, "Quiesce and final run\n"); |
| 1240 | io_u_quiesce(td); |
| 1241 | td->latency_end_run = 1; |
| 1242 | reset_all_stats(td); |
| 1243 | reset_io_stats(td); |
| 1244 | } |
| 1245 | } |
Jens Axboe | 3e260a4 | 2013-12-09 12:38:53 -0700 | [diff] [blame] | 1246 | |
| 1247 | lat_new_cycle(td); |
| 1248 | } |
| 1249 | |
| 1250 | /* |
| 1251 | * Check if we can bump the queue depth |
| 1252 | */ |
| 1253 | void lat_target_check(struct thread_data *td) |
| 1254 | { |
| 1255 | uint64_t usec_window; |
| 1256 | uint64_t ios; |
| 1257 | double success_ios; |
| 1258 | |
| 1259 | usec_window = utime_since_now(&td->latency_ts); |
| 1260 | if (usec_window < td->o.latency_window) |
| 1261 | return; |
| 1262 | |
| 1263 | ios = ddir_rw_sum(td->io_blocks) - td->latency_ios; |
| 1264 | success_ios = (double) (ios - td->latency_failed) / (double) ios; |
| 1265 | success_ios *= 100.0; |
| 1266 | |
| 1267 | dprint(FD_RATE, "Success rate: %.2f%% (target %.2f%%)\n", success_ios, td->o.latency_percentile.u.f); |
| 1268 | |
| 1269 | if (success_ios >= td->o.latency_percentile.u.f) |
| 1270 | lat_target_success(td); |
| 1271 | else |
| 1272 | __lat_target_failed(td); |
| 1273 | } |
| 1274 | |
| 1275 | /* |
| 1276 | * If latency target is enabled, we might be ramping up or down and not |
| 1277 | * using the full queue depth available. |
| 1278 | */ |
Jens Axboe | 5a48d30 | 2014-09-30 13:29:57 -0600 | [diff] [blame] | 1279 | int queue_full(const struct thread_data *td) |
Jens Axboe | 3e260a4 | 2013-12-09 12:38:53 -0700 | [diff] [blame] | 1280 | { |
| 1281 | const int qempty = io_u_qempty(&td->io_u_freelist); |
| 1282 | |
| 1283 | if (qempty) |
| 1284 | return 1; |
| 1285 | if (!td->o.latency_target) |
| 1286 | return 0; |
| 1287 | |
| 1288 | return td->cur_depth >= td->latency_qd; |
| 1289 | } |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1290 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1291 | struct io_u *__get_io_u(struct thread_data *td) |
| 1292 | { |
Jens Axboe | 0cae66f | 2014-03-03 13:55:32 -0700 | [diff] [blame] | 1293 | struct io_u *io_u = NULL; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1294 | |
Jens Axboe | de54cfd | 2014-11-10 20:34:00 -0700 | [diff] [blame] | 1295 | if (td->stop_io) |
| 1296 | return NULL; |
| 1297 | |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 1298 | td_io_u_lock(td); |
| 1299 | |
| 1300 | again: |
Jens Axboe | 2ae0b20 | 2013-05-28 14:16:55 +0200 | [diff] [blame] | 1301 | if (!io_u_rempty(&td->io_u_requeues)) |
| 1302 | io_u = io_u_rpop(&td->io_u_requeues); |
Jens Axboe | 3e260a4 | 2013-12-09 12:38:53 -0700 | [diff] [blame] | 1303 | else if (!queue_full(td)) { |
Jens Axboe | 2ae0b20 | 2013-05-28 14:16:55 +0200 | [diff] [blame] | 1304 | io_u = io_u_qpop(&td->io_u_freelist); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1305 | |
Jens Axboe | 225ba9e | 2014-02-26 14:31:15 -0800 | [diff] [blame] | 1306 | io_u->file = NULL; |
Jens Axboe | 6040dab | 2006-10-24 19:38:15 +0200 | [diff] [blame] | 1307 | io_u->buflen = 0; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1308 | io_u->resid = 0; |
Jens Axboe | d7762cf | 2007-02-23 12:34:57 +0100 | [diff] [blame] | 1309 | io_u->end_io = NULL; |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 1310 | } |
| 1311 | |
| 1312 | if (io_u) { |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 1313 | assert(io_u->flags & IO_U_F_FREE); |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1314 | io_u->flags &= ~(IO_U_F_FREE | IO_U_F_NO_FILE_PUT | |
| 1315 | IO_U_F_TRIMMED | IO_U_F_BARRIER | |
| 1316 | IO_U_F_VER_LIST); |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 1317 | |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 1318 | io_u->error = 0; |
Jens Axboe | bcd5abf | 2013-01-23 09:27:25 -0700 | [diff] [blame] | 1319 | io_u->acct_ddir = -1; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1320 | td->cur_depth++; |
Radha Ramachandran | 0c41214 | 2009-11-03 21:45:31 +0100 | [diff] [blame] | 1321 | io_u->flags |= IO_U_F_IN_CUR_DEPTH; |
Jens Axboe | f940128 | 2014-02-06 12:17:37 -0700 | [diff] [blame] | 1322 | io_u->ipo = NULL; |
Jens Axboe | 1dec3e0 | 2010-03-19 10:33:39 +0100 | [diff] [blame] | 1323 | } else if (td->o.verify_async) { |
| 1324 | /* |
| 1325 | * We ran out, wait for async verify threads to finish and |
| 1326 | * return one |
| 1327 | */ |
| 1328 | pthread_cond_wait(&td->free_cond, &td->io_u_lock); |
| 1329 | goto again; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1330 | } |
| 1331 | |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 1332 | td_io_u_unlock(td); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1333 | return io_u; |
| 1334 | } |
| 1335 | |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1336 | static int check_get_trim(struct thread_data *td, struct io_u *io_u) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1337 | { |
Jens Axboe | d72be54 | 2012-11-30 19:37:46 +0100 | [diff] [blame] | 1338 | if (!(td->flags & TD_F_TRIM_BACKLOG)) |
| 1339 | return 0; |
| 1340 | |
| 1341 | if (td->trim_entries) { |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1342 | int get_trim = 0; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1343 | |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1344 | if (td->trim_batch) { |
| 1345 | td->trim_batch--; |
| 1346 | get_trim = 1; |
| 1347 | } else if (!(td->io_hist_len % td->o.trim_backlog) && |
| 1348 | td->last_ddir != DDIR_READ) { |
| 1349 | td->trim_batch = td->o.trim_batch; |
| 1350 | if (!td->trim_batch) |
| 1351 | td->trim_batch = td->o.trim_backlog; |
| 1352 | get_trim = 1; |
| 1353 | } |
| 1354 | |
| 1355 | if (get_trim && !get_next_trim(td, io_u)) |
| 1356 | return 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1357 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1358 | |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1359 | return 0; |
| 1360 | } |
| 1361 | |
| 1362 | static int check_get_verify(struct thread_data *td, struct io_u *io_u) |
| 1363 | { |
Jens Axboe | d72be54 | 2012-11-30 19:37:46 +0100 | [diff] [blame] | 1364 | if (!(td->flags & TD_F_VER_BACKLOG)) |
| 1365 | return 0; |
| 1366 | |
| 1367 | if (td->io_hist_len) { |
Jens Axboe | 9e14418 | 2010-06-15 14:25:36 +0200 | [diff] [blame] | 1368 | int get_verify = 0; |
| 1369 | |
Jens Axboe | d1ece0c | 2012-03-07 09:32:58 +0100 | [diff] [blame] | 1370 | if (td->verify_batch) |
Jens Axboe | 9e14418 | 2010-06-15 14:25:36 +0200 | [diff] [blame] | 1371 | get_verify = 1; |
Jens Axboe | d1ece0c | 2012-03-07 09:32:58 +0100 | [diff] [blame] | 1372 | else if (!(td->io_hist_len % td->o.verify_backlog) && |
Jens Axboe | 9e14418 | 2010-06-15 14:25:36 +0200 | [diff] [blame] | 1373 | td->last_ddir != DDIR_READ) { |
| 1374 | td->verify_batch = td->o.verify_batch; |
Jens Axboe | f8a75c9 | 2010-06-15 14:27:28 +0200 | [diff] [blame] | 1375 | if (!td->verify_batch) |
| 1376 | td->verify_batch = td->o.verify_backlog; |
Jens Axboe | 9e14418 | 2010-06-15 14:25:36 +0200 | [diff] [blame] | 1377 | get_verify = 1; |
| 1378 | } |
| 1379 | |
Jens Axboe | d1ece0c | 2012-03-07 09:32:58 +0100 | [diff] [blame] | 1380 | if (get_verify && !get_next_verify(td, io_u)) { |
| 1381 | td->verify_batch--; |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1382 | return 1; |
Jens Axboe | d1ece0c | 2012-03-07 09:32:58 +0100 | [diff] [blame] | 1383 | } |
Jens Axboe | 9e14418 | 2010-06-15 14:25:36 +0200 | [diff] [blame] | 1384 | } |
| 1385 | |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1386 | return 0; |
| 1387 | } |
| 1388 | |
| 1389 | /* |
Jens Axboe | de78976 | 2011-09-16 22:11:23 +0200 | [diff] [blame] | 1390 | * Fill offset and start time into the buffer content, to prevent too |
Jens Axboe | 23f394d | 2011-09-16 22:45:27 +0200 | [diff] [blame] | 1391 | * easy compressible data for simple de-dupe attempts. Do this for every |
| 1392 | * 512b block in the range, since that should be the smallest block size |
| 1393 | * we can expect from a device. |
Jens Axboe | de78976 | 2011-09-16 22:11:23 +0200 | [diff] [blame] | 1394 | */ |
| 1395 | static void small_content_scramble(struct io_u *io_u) |
| 1396 | { |
Jens Axboe | 23f394d | 2011-09-16 22:45:27 +0200 | [diff] [blame] | 1397 | unsigned int i, nr_blocks = io_u->buflen / 512; |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 1398 | uint64_t boffset; |
Jens Axboe | 23f394d | 2011-09-16 22:45:27 +0200 | [diff] [blame] | 1399 | unsigned int offset; |
| 1400 | void *p, *end; |
Jens Axboe | de78976 | 2011-09-16 22:11:23 +0200 | [diff] [blame] | 1401 | |
Jens Axboe | 23f394d | 2011-09-16 22:45:27 +0200 | [diff] [blame] | 1402 | if (!nr_blocks) |
| 1403 | return; |
| 1404 | |
| 1405 | p = io_u->xfer_buf; |
Jens Axboe | fba76ee | 2011-09-27 14:27:48 -0600 | [diff] [blame] | 1406 | boffset = io_u->offset; |
Jens Axboe | 81f0366 | 2012-02-02 09:20:09 +0100 | [diff] [blame] | 1407 | io_u->buf_filled_len = 0; |
Jens Axboe | fad82f7 | 2011-09-19 11:33:30 +0200 | [diff] [blame] | 1408 | |
Jens Axboe | 23f394d | 2011-09-16 22:45:27 +0200 | [diff] [blame] | 1409 | for (i = 0; i < nr_blocks; i++) { |
| 1410 | /* |
| 1411 | * Fill the byte offset into a "random" start offset of |
| 1412 | * the buffer, given by the product of the usec time |
| 1413 | * and the actual offset. |
| 1414 | */ |
Jens Axboe | fad82f7 | 2011-09-19 11:33:30 +0200 | [diff] [blame] | 1415 | offset = (io_u->start_time.tv_usec ^ boffset) & 511; |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 1416 | offset &= ~(sizeof(uint64_t) - 1); |
| 1417 | if (offset >= 512 - sizeof(uint64_t)) |
| 1418 | offset -= sizeof(uint64_t); |
Jens Axboe | fba76ee | 2011-09-27 14:27:48 -0600 | [diff] [blame] | 1419 | memcpy(p + offset, &boffset, sizeof(boffset)); |
Jens Axboe | 23f394d | 2011-09-16 22:45:27 +0200 | [diff] [blame] | 1420 | |
| 1421 | end = p + 512 - sizeof(io_u->start_time); |
| 1422 | memcpy(end, &io_u->start_time, sizeof(io_u->start_time)); |
| 1423 | p += 512; |
Jens Axboe | fad82f7 | 2011-09-19 11:33:30 +0200 | [diff] [blame] | 1424 | boffset += 512; |
Jens Axboe | 23f394d | 2011-09-16 22:45:27 +0200 | [diff] [blame] | 1425 | } |
Jens Axboe | de78976 | 2011-09-16 22:11:23 +0200 | [diff] [blame] | 1426 | } |
| 1427 | |
| 1428 | /* |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1429 | * Return an io_u to be processed. Gets a buflen and offset, sets direction, |
| 1430 | * etc. The returned io_u is fully ready to be prepped and submitted. |
| 1431 | */ |
| 1432 | struct io_u *get_io_u(struct thread_data *td) |
| 1433 | { |
| 1434 | struct fio_file *f; |
| 1435 | struct io_u *io_u; |
Jens Axboe | de78976 | 2011-09-16 22:11:23 +0200 | [diff] [blame] | 1436 | int do_scramble = 0; |
Jens Axboe | 002fe73 | 2014-02-11 08:31:13 -0700 | [diff] [blame] | 1437 | long ret = 0; |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1438 | |
| 1439 | io_u = __get_io_u(td); |
| 1440 | if (!io_u) { |
| 1441 | dprint(FD_IO, "__get_io_u failed\n"); |
| 1442 | return NULL; |
| 1443 | } |
| 1444 | |
| 1445 | if (check_get_verify(td, io_u)) |
| 1446 | goto out; |
| 1447 | if (check_get_trim(td, io_u)) |
| 1448 | goto out; |
| 1449 | |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 1450 | /* |
| 1451 | * from a requeue, io_u already setup |
| 1452 | */ |
| 1453 | if (io_u->file) |
Jens Axboe | 77f392b | 2007-02-19 20:13:09 +0100 | [diff] [blame] | 1454 | goto out; |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 1455 | |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1456 | /* |
| 1457 | * If using an iolog, grab next piece if any available. |
| 1458 | */ |
Jens Axboe | d72be54 | 2012-11-30 19:37:46 +0100 | [diff] [blame] | 1459 | if (td->flags & TD_F_READ_IOLOG) { |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1460 | if (read_iolog_get(td, io_u)) |
| 1461 | goto err_put; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1462 | } else if (set_io_u_file(td, io_u)) { |
Jens Axboe | 002fe73 | 2014-02-11 08:31:13 -0700 | [diff] [blame] | 1463 | ret = -EBUSY; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1464 | dprint(FD_IO, "io_u %p, setting file failed\n", io_u); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1465 | goto err_put; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1466 | } |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 1467 | |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1468 | f = io_u->file; |
Jens Axboe | 002fe73 | 2014-02-11 08:31:13 -0700 | [diff] [blame] | 1469 | if (!f) { |
| 1470 | dprint(FD_IO, "io_u %p, setting file failed\n", io_u); |
| 1471 | goto err_put; |
| 1472 | } |
| 1473 | |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 1474 | assert(fio_file_open(f)); |
Jens Axboe | 97af62c | 2007-05-22 11:12:13 +0200 | [diff] [blame] | 1475 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 1476 | if (ddir_rw(io_u->ddir)) { |
Jens Axboe | d0656a9 | 2008-02-01 18:33:23 +0100 | [diff] [blame] | 1477 | if (!io_u->buflen && !(td->io_ops->flags & FIO_NOIO)) { |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1478 | dprint(FD_IO, "get_io_u: zero buflen on %p\n", io_u); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1479 | goto err_put; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1480 | } |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 1481 | |
Jens Axboe | 08a99be | 2014-12-14 19:01:24 -0700 | [diff] [blame] | 1482 | f->last_start[io_u->ddir] = io_u->offset; |
| 1483 | f->last_pos[io_u->ddir] = io_u->offset + io_u->buflen; |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 1484 | |
Jens Axboe | fd68418 | 2011-09-19 09:24:44 +0200 | [diff] [blame] | 1485 | if (io_u->ddir == DDIR_WRITE) { |
Jens Axboe | d72be54 | 2012-11-30 19:37:46 +0100 | [diff] [blame] | 1486 | if (td->flags & TD_F_REFILL_BUFFERS) { |
Jens Axboe | 9c42684 | 2012-03-02 21:02:12 +0100 | [diff] [blame] | 1487 | io_u_fill_buffer(td, io_u, |
Jens Axboe | 8e0aa16 | 2014-09-26 15:04:58 -0600 | [diff] [blame] | 1488 | td->o.min_bs[DDIR_WRITE], |
| 1489 | io_u->xfer_buflen); |
Jens Axboe | bedc9dc | 2014-03-17 12:51:09 -0600 | [diff] [blame] | 1490 | } else if ((td->flags & TD_F_SCRAMBLE_BUFFERS) && |
| 1491 | !(td->flags & TD_F_COMPRESS)) |
Jens Axboe | fd68418 | 2011-09-19 09:24:44 +0200 | [diff] [blame] | 1492 | do_scramble = 1; |
Jens Axboe | d72be54 | 2012-11-30 19:37:46 +0100 | [diff] [blame] | 1493 | if (td->flags & TD_F_VER_NONE) { |
Jens Axboe | 629f1d7 | 2012-03-09 19:02:01 +0100 | [diff] [blame] | 1494 | populate_verify_io_u(td, io_u); |
| 1495 | do_scramble = 0; |
| 1496 | } |
Jens Axboe | fd68418 | 2011-09-19 09:24:44 +0200 | [diff] [blame] | 1497 | } else if (io_u->ddir == DDIR_READ) { |
Radha Ramachandran | cbe8d75 | 2010-07-14 08:36:07 +0200 | [diff] [blame] | 1498 | /* |
| 1499 | * Reset the buf_filled parameters so next time if the |
| 1500 | * buffer is used for writes it is refilled. |
| 1501 | */ |
Radha Ramachandran | cbe8d75 | 2010-07-14 08:36:07 +0200 | [diff] [blame] | 1502 | io_u->buf_filled_len = 0; |
| 1503 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1504 | } |
| 1505 | |
Jens Axboe | 165faf1 | 2007-02-07 11:30:37 +0100 | [diff] [blame] | 1506 | /* |
| 1507 | * Set io data pointers. |
| 1508 | */ |
Jens Axboe | cec6b55 | 2007-02-06 20:15:38 +0100 | [diff] [blame] | 1509 | io_u->xfer_buf = io_u->buf; |
| 1510 | io_u->xfer_buflen = io_u->buflen; |
Jens Axboe | 5973caf | 2008-05-21 19:52:35 +0200 | [diff] [blame] | 1511 | |
Jens Axboe | 6ac7a33 | 2008-03-01 15:22:32 +0100 | [diff] [blame] | 1512 | out: |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1513 | assert(io_u->file); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1514 | if (!td_io_prep(td, io_u)) { |
Jens Axboe | 993bf48 | 2008-11-14 13:04:53 +0100 | [diff] [blame] | 1515 | if (!td->o.disable_slat) |
| 1516 | fio_gettime(&io_u->start_time, NULL); |
Jens Axboe | de78976 | 2011-09-16 22:11:23 +0200 | [diff] [blame] | 1517 | if (do_scramble) |
| 1518 | small_content_scramble(io_u); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1519 | return io_u; |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 1520 | } |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1521 | err_put: |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1522 | dprint(FD_IO, "get_io_u failed\n"); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1523 | put_io_u(td, io_u); |
Jens Axboe | 002fe73 | 2014-02-11 08:31:13 -0700 | [diff] [blame] | 1524 | return ERR_PTR(ret); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1525 | } |
| 1526 | |
Jens Axboe | 5451792 | 2007-03-05 10:06:06 +0100 | [diff] [blame] | 1527 | void io_u_log_error(struct thread_data *td, struct io_u *io_u) |
| 1528 | { |
Dmitry Monakhov | 8b28bd4 | 2012-09-23 15:46:09 +0400 | [diff] [blame] | 1529 | enum error_type_bit eb = td_error_type(io_u->ddir, io_u->error); |
Jens Axboe | 825f818 | 2010-08-25 10:47:18 +0200 | [diff] [blame] | 1530 | |
Dmitry Monakhov | 8b28bd4 | 2012-09-23 15:46:09 +0400 | [diff] [blame] | 1531 | if (td_non_fatal_error(td, eb, io_u->error) && !td->o.error_dump) |
| 1532 | return; |
Jens Axboe | 5451792 | 2007-03-05 10:06:06 +0100 | [diff] [blame] | 1533 | |
Robert Elliott | 2cbdcdb | 2014-09-16 17:09:48 -0500 | [diff] [blame] | 1534 | log_err("fio: io_u error%s%s: %s: %s offset=%llu, buflen=%lu\n", |
| 1535 | io_u->file ? " on file " : "", |
| 1536 | io_u->file ? io_u->file->file_name : "", |
| 1537 | strerror(io_u->error), |
| 1538 | io_ddir_name(io_u->ddir), |
| 1539 | io_u->offset, io_u->xfer_buflen); |
Jens Axboe | 5451792 | 2007-03-05 10:06:06 +0100 | [diff] [blame] | 1540 | |
| 1541 | if (!td->error) |
| 1542 | td_verror(td, io_u->error, "io_u error"); |
| 1543 | } |
| 1544 | |
Jens Axboe | aba6c95 | 2014-02-13 19:59:56 -0700 | [diff] [blame] | 1545 | static inline int gtod_reduce(struct thread_data *td) |
| 1546 | { |
Jens Axboe | 729fe3a | 2014-02-14 08:46:35 -0700 | [diff] [blame] | 1547 | return td->o.disable_clat && td->o.disable_lat && td->o.disable_slat |
Jens Axboe | b74b820 | 2014-02-13 20:04:02 -0700 | [diff] [blame] | 1548 | && td->o.disable_bw; |
Jens Axboe | aba6c95 | 2014-02-13 19:59:56 -0700 | [diff] [blame] | 1549 | } |
| 1550 | |
Jens Axboe | c8eeb9d | 2011-10-05 14:02:22 +0200 | [diff] [blame] | 1551 | static void account_io_completion(struct thread_data *td, struct io_u *io_u, |
| 1552 | struct io_completion_data *icd, |
| 1553 | const enum fio_ddir idx, unsigned int bytes) |
| 1554 | { |
Jens Axboe | 24d23ca | 2012-11-13 08:31:24 -0700 | [diff] [blame] | 1555 | unsigned long lusec = 0; |
Jens Axboe | c8eeb9d | 2011-10-05 14:02:22 +0200 | [diff] [blame] | 1556 | |
Jens Axboe | aba6c95 | 2014-02-13 19:59:56 -0700 | [diff] [blame] | 1557 | if (!gtod_reduce(td)) |
Jens Axboe | c8eeb9d | 2011-10-05 14:02:22 +0200 | [diff] [blame] | 1558 | lusec = utime_since(&io_u->issue_time, &icd->time); |
| 1559 | |
| 1560 | if (!td->o.disable_lat) { |
| 1561 | unsigned long tusec; |
| 1562 | |
| 1563 | tusec = utime_since(&io_u->start_time, &icd->time); |
Jens Axboe | ccefd5f | 2014-06-30 20:59:03 -0600 | [diff] [blame] | 1564 | add_lat_sample(td, idx, tusec, bytes, io_u->offset); |
Jens Axboe | 1550153 | 2012-10-24 16:37:45 +0200 | [diff] [blame] | 1565 | |
Jens Axboe | d4afedf | 2013-05-22 22:21:29 +0200 | [diff] [blame] | 1566 | if (td->flags & TD_F_PROFILE_OPS) { |
| 1567 | struct prof_io_ops *ops = &td->prof_io_ops; |
| 1568 | |
| 1569 | if (ops->io_u_lat) |
| 1570 | icd->error = ops->io_u_lat(td, tusec); |
| 1571 | } |
| 1572 | |
Jens Axboe | 3e260a4 | 2013-12-09 12:38:53 -0700 | [diff] [blame] | 1573 | if (td->o.max_latency && tusec > td->o.max_latency) |
| 1574 | lat_fatal(td, icd, tusec, td->o.max_latency); |
| 1575 | if (td->o.latency_target && tusec > td->o.latency_target) { |
| 1576 | if (lat_target_failed(td)) |
| 1577 | lat_fatal(td, icd, tusec, td->o.latency_target); |
Jens Axboe | 1550153 | 2012-10-24 16:37:45 +0200 | [diff] [blame] | 1578 | } |
Jens Axboe | c8eeb9d | 2011-10-05 14:02:22 +0200 | [diff] [blame] | 1579 | } |
| 1580 | |
| 1581 | if (!td->o.disable_clat) { |
Jens Axboe | ccefd5f | 2014-06-30 20:59:03 -0600 | [diff] [blame] | 1582 | add_clat_sample(td, idx, lusec, bytes, io_u->offset); |
Jens Axboe | c8eeb9d | 2011-10-05 14:02:22 +0200 | [diff] [blame] | 1583 | io_u_mark_latency(td, lusec); |
| 1584 | } |
| 1585 | |
| 1586 | if (!td->o.disable_bw) |
| 1587 | add_bw_sample(td, idx, bytes, &icd->time); |
| 1588 | |
Jens Axboe | aba6c95 | 2014-02-13 19:59:56 -0700 | [diff] [blame] | 1589 | if (!gtod_reduce(td)) |
| 1590 | add_iops_sample(td, idx, bytes, &icd->time); |
Jens Axboe | c8eeb9d | 2011-10-05 14:02:22 +0200 | [diff] [blame] | 1591 | } |
| 1592 | |
Steven Lang | 1b8dbf2 | 2011-11-09 13:48:01 +0100 | [diff] [blame] | 1593 | static long long usec_for_io(struct thread_data *td, enum fio_ddir ddir) |
| 1594 | { |
Jens Axboe | 1ae83d4 | 2013-01-12 01:44:15 -0700 | [diff] [blame] | 1595 | uint64_t secs, remainder, bps, bytes; |
| 1596 | |
Steven Lang | 1b8dbf2 | 2011-11-09 13:48:01 +0100 | [diff] [blame] | 1597 | bytes = td->this_io_bytes[ddir]; |
| 1598 | bps = td->rate_bps[ddir]; |
| 1599 | secs = bytes / bps; |
| 1600 | remainder = bytes % bps; |
| 1601 | return remainder * 1000000 / bps + secs * 1000000; |
| 1602 | } |
| 1603 | |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1604 | static void io_completed(struct thread_data *td, struct io_u **io_u_ptr, |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1605 | struct io_completion_data *icd) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1606 | { |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1607 | struct io_u *io_u = *io_u_ptr; |
| 1608 | enum fio_ddir ddir = io_u->ddir; |
| 1609 | struct fio_file *f = io_u->file; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1610 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1611 | dprint_io_u(io_u, "io complete"); |
| 1612 | |
Jens Axboe | 2ecc1b5 | 2009-11-04 20:58:09 +0100 | [diff] [blame] | 1613 | td_io_u_lock(td); |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 1614 | assert(io_u->flags & IO_U_F_FLIGHT); |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 1615 | io_u->flags &= ~(IO_U_F_FLIGHT | IO_U_F_BUSY_OK); |
Jens Axboe | f940128 | 2014-02-06 12:17:37 -0700 | [diff] [blame] | 1616 | |
| 1617 | /* |
| 1618 | * Mark IO ok to verify |
| 1619 | */ |
| 1620 | if (io_u->ipo) { |
Jens Axboe | 890b665 | 2014-05-06 19:06:51 -0600 | [diff] [blame] | 1621 | /* |
| 1622 | * Remove errored entry from the verification list |
| 1623 | */ |
| 1624 | if (io_u->error) |
| 1625 | unlog_io_piece(td, io_u); |
| 1626 | else { |
| 1627 | io_u->ipo->flags &= ~IP_F_IN_FLIGHT; |
| 1628 | write_barrier(); |
| 1629 | } |
Jens Axboe | f940128 | 2014-02-06 12:17:37 -0700 | [diff] [blame] | 1630 | } |
| 1631 | |
Jens Axboe | 2ecc1b5 | 2009-11-04 20:58:09 +0100 | [diff] [blame] | 1632 | td_io_u_unlock(td); |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 1633 | |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1634 | if (ddir_sync(ddir)) { |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 1635 | td->last_was_sync = 1; |
Jens Axboe | 44f2969 | 2010-03-09 20:09:44 +0100 | [diff] [blame] | 1636 | if (f) { |
| 1637 | f->first_write = -1ULL; |
| 1638 | f->last_write = -1ULL; |
| 1639 | } |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 1640 | return; |
| 1641 | } |
| 1642 | |
| 1643 | td->last_was_sync = 0; |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1644 | td->last_ddir = ddir; |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 1645 | |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1646 | if (!io_u->error && ddir_rw(ddir)) { |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1647 | unsigned int bytes = io_u->buflen - io_u->resid; |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1648 | const enum fio_ddir oddir = ddir ^ 1; |
Jens Axboe | b29ee5b | 2008-09-11 10:17:26 +0200 | [diff] [blame] | 1649 | int ret; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1650 | |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1651 | td->io_blocks[ddir]++; |
| 1652 | td->this_io_blocks[ddir]++; |
| 1653 | td->io_bytes[ddir] += bytes; |
webee | ae2fafc | 2012-03-23 13:41:41 +0100 | [diff] [blame] | 1654 | |
| 1655 | if (!(io_u->flags & IO_U_F_VER_LIST)) |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1656 | td->this_io_bytes[ddir] += bytes; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1657 | |
Jens Axboe | de54cfd | 2014-11-10 20:34:00 -0700 | [diff] [blame] | 1658 | if (ddir == DDIR_WRITE) { |
| 1659 | if (f) { |
| 1660 | if (f->first_write == -1ULL || |
| 1661 | io_u->offset < f->first_write) |
| 1662 | f->first_write = io_u->offset; |
| 1663 | if (f->last_write == -1ULL || |
| 1664 | ((io_u->offset + bytes) > f->last_write)) |
| 1665 | f->last_write = io_u->offset + bytes; |
| 1666 | } |
| 1667 | if (td->last_write_comp) { |
| 1668 | int idx = td->last_write_idx++; |
| 1669 | |
| 1670 | td->last_write_comp[idx] = io_u->offset; |
| 1671 | if (td->last_write_idx == td->o.iodepth) |
| 1672 | td->last_write_idx = 0; |
| 1673 | } |
Jens Axboe | 44f2969 | 2010-03-09 20:09:44 +0100 | [diff] [blame] | 1674 | } |
| 1675 | |
Steven Lang | 6b1190f | 2012-02-07 09:42:59 +0100 | [diff] [blame] | 1676 | if (ramp_time_over(td) && (td->runstate == TD_RUNNING || |
| 1677 | td->runstate == TD_VERIFYING)) { |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1678 | account_io_completion(td, io_u, icd, ddir, bytes); |
Jens Axboe | 40e1a6f | 2009-06-11 10:55:39 +0200 | [diff] [blame] | 1679 | |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1680 | if (__should_check_rate(td, ddir)) { |
| 1681 | td->rate_pending_usleep[ddir] = |
| 1682 | (usec_for_io(td, ddir) - |
Radha Ramachandran | ba3e4e0 | 2009-12-09 22:31:44 +0100 | [diff] [blame] | 1683 | utime_since_now(&td->start)); |
Jens Axboe | b23b6a2 | 2009-06-11 22:06:23 +0200 | [diff] [blame] | 1684 | } |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1685 | if (ddir != DDIR_TRIM && |
| 1686 | __should_check_rate(td, oddir)) { |
| 1687 | td->rate_pending_usleep[oddir] = |
| 1688 | (usec_for_io(td, oddir) - |
Radha Ramachandran | ba3e4e0 | 2009-12-09 22:31:44 +0100 | [diff] [blame] | 1689 | utime_since_now(&td->start)); |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1690 | } |
Jens Axboe | 721938a | 2008-09-10 09:46:16 +0200 | [diff] [blame] | 1691 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1692 | |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1693 | icd->bytes_done[ddir] += bytes; |
Jens Axboe | 3af6ef3 | 2007-02-18 06:57:43 +0100 | [diff] [blame] | 1694 | |
Jens Axboe | d7762cf | 2007-02-23 12:34:57 +0100 | [diff] [blame] | 1695 | if (io_u->end_io) { |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1696 | ret = io_u->end_io(td, io_u_ptr); |
| 1697 | io_u = *io_u_ptr; |
Jens Axboe | 3af6ef3 | 2007-02-18 06:57:43 +0100 | [diff] [blame] | 1698 | if (ret && !icd->error) |
| 1699 | icd->error = ret; |
| 1700 | } |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 1701 | } else if (io_u->error) { |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1702 | icd->error = io_u->error; |
Jens Axboe | 5451792 | 2007-03-05 10:06:06 +0100 | [diff] [blame] | 1703 | io_u_log_error(td, io_u); |
| 1704 | } |
Dmitry Monakhov | 8b28bd4 | 2012-09-23 15:46:09 +0400 | [diff] [blame] | 1705 | if (icd->error) { |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1706 | enum error_type_bit eb = td_error_type(ddir, icd->error); |
| 1707 | |
Dmitry Monakhov | 8b28bd4 | 2012-09-23 15:46:09 +0400 | [diff] [blame] | 1708 | if (!td_non_fatal_error(td, eb, icd->error)) |
| 1709 | return; |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1710 | |
Radha Ramachandran | f2bba18 | 2009-06-15 08:40:16 +0200 | [diff] [blame] | 1711 | /* |
| 1712 | * If there is a non_fatal error, then add to the error count |
| 1713 | * and clear all the errors. |
| 1714 | */ |
| 1715 | update_error_count(td, icd->error); |
| 1716 | td_clear_error(td); |
| 1717 | icd->error = 0; |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1718 | if (io_u) |
| 1719 | io_u->error = 0; |
Radha Ramachandran | f2bba18 | 2009-06-15 08:40:16 +0200 | [diff] [blame] | 1720 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1721 | } |
| 1722 | |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1723 | static void init_icd(struct thread_data *td, struct io_completion_data *icd, |
| 1724 | int nr) |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 1725 | { |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 1726 | int ddir; |
Jens Axboe | aba6c95 | 2014-02-13 19:59:56 -0700 | [diff] [blame] | 1727 | |
| 1728 | if (!gtod_reduce(td)) |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1729 | fio_gettime(&icd->time, NULL); |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 1730 | |
Jens Axboe | 3af6ef3 | 2007-02-18 06:57:43 +0100 | [diff] [blame] | 1731 | icd->nr = nr; |
| 1732 | |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 1733 | icd->error = 0; |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 1734 | for (ddir = DDIR_READ; ddir < DDIR_RWDIR_CNT; ddir++) |
| 1735 | icd->bytes_done[ddir] = 0; |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 1736 | } |
| 1737 | |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1738 | static void ios_completed(struct thread_data *td, |
| 1739 | struct io_completion_data *icd) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1740 | { |
| 1741 | struct io_u *io_u; |
| 1742 | int i; |
| 1743 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1744 | for (i = 0; i < icd->nr; i++) { |
| 1745 | io_u = td->io_ops->event(td, i); |
| 1746 | |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1747 | io_completed(td, &io_u, icd); |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 1748 | |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1749 | if (io_u) |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 1750 | put_io_u(td, io_u); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1751 | } |
| 1752 | } |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1753 | |
Jens Axboe | e7e6cfb | 2007-02-20 10:58:34 +0100 | [diff] [blame] | 1754 | /* |
| 1755 | * Complete a single io_u for the sync engines. |
| 1756 | */ |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1757 | int io_u_sync_complete(struct thread_data *td, struct io_u *io_u, |
Jens Axboe | 100f49f | 2013-01-23 10:15:57 -0700 | [diff] [blame] | 1758 | uint64_t *bytes) |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1759 | { |
| 1760 | struct io_completion_data icd; |
| 1761 | |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1762 | init_icd(td, &icd, 1); |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1763 | io_completed(td, &io_u, &icd); |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 1764 | |
Jens Axboe | e69fdf7 | 2014-07-23 16:11:43 +0200 | [diff] [blame] | 1765 | if (io_u) |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 1766 | put_io_u(td, io_u); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1767 | |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1768 | if (icd.error) { |
| 1769 | td_verror(td, icd.error, "io_u_sync_complete"); |
| 1770 | return -1; |
| 1771 | } |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1772 | |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1773 | if (bytes) { |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 1774 | int ddir; |
| 1775 | |
| 1776 | for (ddir = DDIR_READ; ddir < DDIR_RWDIR_CNT; ddir++) |
| 1777 | bytes[ddir] += icd.bytes_done[ddir]; |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1778 | } |
| 1779 | |
| 1780 | return 0; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1781 | } |
| 1782 | |
Jens Axboe | e7e6cfb | 2007-02-20 10:58:34 +0100 | [diff] [blame] | 1783 | /* |
| 1784 | * Called to complete min_events number of io for the async engines. |
| 1785 | */ |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1786 | int io_u_queued_complete(struct thread_data *td, int min_evts, |
Jens Axboe | 100f49f | 2013-01-23 10:15:57 -0700 | [diff] [blame] | 1787 | uint64_t *bytes) |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1788 | { |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1789 | struct io_completion_data icd; |
Jens Axboe | 00de55e | 2007-02-20 10:45:57 +0100 | [diff] [blame] | 1790 | struct timespec *tvp = NULL; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1791 | int ret; |
Davide Libenzi | 4d06a33 | 2007-03-22 07:43:50 +0100 | [diff] [blame] | 1792 | struct timespec ts = { .tv_sec = 0, .tv_nsec = 0, }; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1793 | |
Jens Axboe | 4950421 | 2008-06-05 09:03:30 +0200 | [diff] [blame] | 1794 | dprint(FD_IO, "io_u_queued_completed: min=%d\n", min_evts); |
Jens Axboe | b271fe6 | 2008-02-04 10:49:41 +0100 | [diff] [blame] | 1795 | |
Jens Axboe | 4950421 | 2008-06-05 09:03:30 +0200 | [diff] [blame] | 1796 | if (!min_evts) |
Jens Axboe | 00de55e | 2007-02-20 10:45:57 +0100 | [diff] [blame] | 1797 | tvp = &ts; |
Robert Elliott | 0507483 | 2014-09-04 13:51:05 -0600 | [diff] [blame] | 1798 | else if (min_evts > td->cur_depth) |
| 1799 | min_evts = td->cur_depth; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1800 | |
Jens Axboe | 4950421 | 2008-06-05 09:03:30 +0200 | [diff] [blame] | 1801 | ret = td_io_getevents(td, min_evts, td->o.iodepth_batch_complete, tvp); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1802 | if (ret < 0) { |
Jens Axboe | e1161c3 | 2007-02-22 19:36:48 +0100 | [diff] [blame] | 1803 | td_verror(td, -ret, "td_io_getevents"); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1804 | return ret; |
| 1805 | } else if (!ret) |
| 1806 | return ret; |
| 1807 | |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1808 | init_icd(td, &icd, ret); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1809 | ios_completed(td, &icd); |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1810 | if (icd.error) { |
| 1811 | td_verror(td, icd.error, "io_u_queued_complete"); |
| 1812 | return -1; |
| 1813 | } |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1814 | |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1815 | if (bytes) { |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 1816 | int ddir; |
| 1817 | |
| 1818 | for (ddir = DDIR_READ; ddir < DDIR_RWDIR_CNT; ddir++) |
| 1819 | bytes[ddir] += icd.bytes_done[ddir]; |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1820 | } |
| 1821 | |
| 1822 | return 0; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1823 | } |
Jens Axboe | 7e77dd0 | 2007-02-20 10:57:34 +0100 | [diff] [blame] | 1824 | |
| 1825 | /* |
| 1826 | * Call when io_u is really queued, to update the submission latency. |
| 1827 | */ |
| 1828 | void io_u_queued(struct thread_data *td, struct io_u *io_u) |
| 1829 | { |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1830 | if (!td->o.disable_slat) { |
| 1831 | unsigned long slat_time; |
Jens Axboe | 7e77dd0 | 2007-02-20 10:57:34 +0100 | [diff] [blame] | 1832 | |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1833 | slat_time = utime_since(&io_u->start_time, &io_u->issue_time); |
Jens Axboe | ccefd5f | 2014-06-30 20:59:03 -0600 | [diff] [blame] | 1834 | add_slat_sample(td, io_u->ddir, slat_time, io_u->xfer_buflen, |
| 1835 | io_u->offset); |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1836 | } |
Jens Axboe | 7e77dd0 | 2007-02-20 10:57:34 +0100 | [diff] [blame] | 1837 | } |
Jens Axboe | 433afcb | 2007-02-22 10:39:01 +0100 | [diff] [blame] | 1838 | |
Jens Axboe | e66dac2 | 2014-09-22 10:02:07 -0600 | [diff] [blame] | 1839 | /* |
| 1840 | * See if we should reuse the last seed, if dedupe is enabled |
| 1841 | */ |
| 1842 | static struct frand_state *get_buf_state(struct thread_data *td) |
| 1843 | { |
| 1844 | unsigned int v; |
| 1845 | unsigned long r; |
| 1846 | |
| 1847 | if (!td->o.dedupe_percentage) |
| 1848 | return &td->buf_state; |
Jens Axboe | 64d3bab | 2014-09-22 14:20:05 -0600 | [diff] [blame] | 1849 | else if (td->o.dedupe_percentage == 100) |
| 1850 | return &td->buf_state_prev; |
Jens Axboe | e66dac2 | 2014-09-22 10:02:07 -0600 | [diff] [blame] | 1851 | |
| 1852 | r = __rand(&td->dedupe_state); |
| 1853 | v = 1 + (int) (100.0 * (r / (FRAND_MAX + 1.0))); |
| 1854 | |
| 1855 | if (v <= td->o.dedupe_percentage) |
| 1856 | return &td->buf_state_prev; |
| 1857 | |
| 1858 | return &td->buf_state; |
| 1859 | } |
| 1860 | |
| 1861 | static void save_buf_state(struct thread_data *td, struct frand_state *rs) |
| 1862 | { |
| 1863 | if (rs == &td->buf_state) |
| 1864 | frand_copy(&td->buf_state_prev, rs); |
| 1865 | } |
| 1866 | |
Jens Axboe | cc86c39 | 2013-05-03 15:12:33 +0200 | [diff] [blame] | 1867 | void fill_io_buffer(struct thread_data *td, void *buf, unsigned int min_write, |
| 1868 | unsigned int max_bs) |
Jens Axboe | 5973caf | 2008-05-21 19:52:35 +0200 | [diff] [blame] | 1869 | { |
Jens Axboe | fd1583f | 2014-12-03 19:55:33 -0700 | [diff] [blame] | 1870 | struct thread_options *o = &td->o; |
| 1871 | |
Vasily Tarasov | efd633f | 2015-01-28 09:10:30 -0700 | [diff] [blame] | 1872 | if (o->compress_percentage || o->dedupe_percentage) { |
Jens Axboe | 9c42684 | 2012-03-02 21:02:12 +0100 | [diff] [blame] | 1873 | unsigned int perc = td->o.compress_percentage; |
Jens Axboe | e66dac2 | 2014-09-22 10:02:07 -0600 | [diff] [blame] | 1874 | struct frand_state *rs; |
Jens Axboe | 8e0aa16 | 2014-09-26 15:04:58 -0600 | [diff] [blame] | 1875 | unsigned int left = max_bs; |
Jens Axboe | e66dac2 | 2014-09-22 10:02:07 -0600 | [diff] [blame] | 1876 | |
Jens Axboe | 8e0aa16 | 2014-09-26 15:04:58 -0600 | [diff] [blame] | 1877 | do { |
| 1878 | rs = get_buf_state(td); |
Jens Axboe | 9c42684 | 2012-03-02 21:02:12 +0100 | [diff] [blame] | 1879 | |
Jens Axboe | 8e0aa16 | 2014-09-26 15:04:58 -0600 | [diff] [blame] | 1880 | min_write = min(min_write, left); |
Jens Axboe | f97a43a | 2012-03-09 19:06:24 +0100 | [diff] [blame] | 1881 | |
Jens Axboe | 8e0aa16 | 2014-09-26 15:04:58 -0600 | [diff] [blame] | 1882 | if (perc) { |
| 1883 | unsigned int seg = min_write; |
Jens Axboe | cc86c39 | 2013-05-03 15:12:33 +0200 | [diff] [blame] | 1884 | |
Jens Axboe | 8e0aa16 | 2014-09-26 15:04:58 -0600 | [diff] [blame] | 1885 | seg = min(min_write, td->o.compress_chunk); |
| 1886 | if (!seg) |
| 1887 | seg = min_write; |
| 1888 | |
| 1889 | fill_random_buf_percentage(rs, buf, perc, seg, |
Jens Axboe | fd1583f | 2014-12-03 19:55:33 -0700 | [diff] [blame] | 1890 | min_write, o->buffer_pattern, |
| 1891 | o->buffer_pattern_bytes); |
Jens Axboe | 8e0aa16 | 2014-09-26 15:04:58 -0600 | [diff] [blame] | 1892 | } else |
| 1893 | fill_random_buf(rs, buf, min_write); |
| 1894 | |
| 1895 | buf += min_write; |
| 1896 | left -= min_write; |
Jens Axboe | e66dac2 | 2014-09-22 10:02:07 -0600 | [diff] [blame] | 1897 | save_buf_state(td, rs); |
Jens Axboe | 8e0aa16 | 2014-09-26 15:04:58 -0600 | [diff] [blame] | 1898 | } while (left); |
Jens Axboe | fd1583f | 2014-12-03 19:55:33 -0700 | [diff] [blame] | 1899 | } else if (o->buffer_pattern_bytes) |
| 1900 | fill_buffer_pattern(td, buf, max_bs); |
| 1901 | else |
Jens Axboe | cc86c39 | 2013-05-03 15:12:33 +0200 | [diff] [blame] | 1902 | memset(buf, 0, max_bs); |
| 1903 | } |
| 1904 | |
| 1905 | /* |
| 1906 | * "randomly" fill the buffer contents |
| 1907 | */ |
| 1908 | void io_u_fill_buffer(struct thread_data *td, struct io_u *io_u, |
| 1909 | unsigned int min_write, unsigned int max_bs) |
| 1910 | { |
| 1911 | io_u->buf_filled_len = 0; |
| 1912 | fill_io_buffer(td, io_u->buf, min_write, max_bs); |
Jens Axboe | 5973caf | 2008-05-21 19:52:35 +0200 | [diff] [blame] | 1913 | } |