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 | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 13 | |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 14 | struct io_completion_data { |
| 15 | int nr; /* input */ |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 16 | |
| 17 | int error; /* output */ |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 18 | unsigned long bytes_done[DDIR_RWDIR_CNT]; /* output */ |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 19 | struct timeval time; /* output */ |
| 20 | }; |
| 21 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 22 | /* |
| 23 | * The ->file_map[] contains a map of blocks we have or have not done io |
| 24 | * to yet. Used to make sure we cover the entire range in a fair fashion. |
| 25 | */ |
Jens Axboe | aec2de2 | 2008-04-24 12:44:42 +0200 | [diff] [blame] | 26 | static int random_map_free(struct fio_file *f, const unsigned long long block) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 27 | { |
Jens Axboe | aec2de2 | 2008-04-24 12:44:42 +0200 | [diff] [blame] | 28 | unsigned int idx = RAND_MAP_IDX(f, block); |
| 29 | unsigned int bit = RAND_MAP_BIT(f, block); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 30 | |
Jens Axboe | 84422ac | 2008-02-19 20:10:26 +0100 | [diff] [blame] | 31 | dprint(FD_RANDOM, "free: b=%llu, idx=%u, bit=%u\n", block, idx, bit); |
| 32 | |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 33 | return (f->file_map[idx] & (1UL << bit)) == 0; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 34 | } |
| 35 | |
| 36 | /* |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 37 | * Mark a given offset as used in the map. |
| 38 | */ |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 39 | 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] | 40 | { |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 41 | unsigned int min_bs = td->o.rw_min_bs; |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 42 | struct fio_file *f = io_u->file; |
Jens Axboe | a00735e | 2006-11-03 08:58:08 +0100 | [diff] [blame] | 43 | unsigned long long block; |
Jens Axboe | 3e3357b | 2008-06-02 09:53:05 +0200 | [diff] [blame] | 44 | unsigned int blocks, nr_blocks; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 45 | int busy_check; |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 46 | |
Jens Axboe | b9c5b64 | 2008-02-18 14:13:08 +0100 | [diff] [blame] | 47 | block = (io_u->offset - f->file_offset) / (unsigned long long) min_bs; |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 48 | nr_blocks = (io_u->buflen + min_bs - 1) / min_bs; |
Jens Axboe | 3e3357b | 2008-06-02 09:53:05 +0200 | [diff] [blame] | 49 | blocks = 0; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 50 | busy_check = !(io_u->flags & IO_U_F_BUSY_OK); |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 51 | |
Jens Axboe | 3e3357b | 2008-06-02 09:53:05 +0200 | [diff] [blame] | 52 | while (nr_blocks) { |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 53 | unsigned int idx, bit; |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 54 | unsigned long mask, this_blocks; |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 55 | |
Jens Axboe | 1e3d53a | 2007-03-22 19:01:48 +0100 | [diff] [blame] | 56 | /* |
| 57 | * If we have a mixed random workload, we may |
| 58 | * encounter blocks we already did IO to. |
| 59 | */ |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 60 | if (!busy_check) { |
| 61 | blocks = nr_blocks; |
| 62 | break; |
| 63 | } |
Jens Axboe | 5736c10 | 2010-07-20 12:03:25 -0600 | [diff] [blame] | 64 | if ((td->o.ddir_seq_nr == 1) && !random_map_free(f, block)) |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 65 | break; |
| 66 | |
Jens Axboe | aec2de2 | 2008-04-24 12:44:42 +0200 | [diff] [blame] | 67 | idx = RAND_MAP_IDX(f, block); |
| 68 | bit = RAND_MAP_BIT(f, block); |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 69 | |
Jens Axboe | 0032bf9 | 2007-02-13 17:39:56 +0100 | [diff] [blame] | 70 | fio_assert(td, idx < f->num_maps); |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 71 | |
Jens Axboe | 3e3357b | 2008-06-02 09:53:05 +0200 | [diff] [blame] | 72 | this_blocks = nr_blocks; |
| 73 | if (this_blocks + bit > BLOCKS_PER_MAP) |
| 74 | this_blocks = BLOCKS_PER_MAP - bit; |
| 75 | |
Jens Axboe | da3758b | 2010-06-17 21:27:11 +0200 | [diff] [blame] | 76 | do { |
| 77 | if (this_blocks == BLOCKS_PER_MAP) |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 78 | mask = -1UL; |
Jens Axboe | da3758b | 2010-06-17 21:27:11 +0200 | [diff] [blame] | 79 | else |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 80 | mask = ((1UL << this_blocks) - 1) << bit; |
Jens Axboe | da3758b | 2010-06-17 21:27:11 +0200 | [diff] [blame] | 81 | |
| 82 | if (!(f->file_map[idx] & mask)) |
| 83 | break; |
| 84 | |
| 85 | this_blocks--; |
| 86 | } while (this_blocks); |
| 87 | |
| 88 | if (!this_blocks) |
| 89 | break; |
Jens Axboe | 3e3357b | 2008-06-02 09:53:05 +0200 | [diff] [blame] | 90 | |
Jens Axboe | 3e3357b | 2008-06-02 09:53:05 +0200 | [diff] [blame] | 91 | f->file_map[idx] |= mask; |
| 92 | nr_blocks -= this_blocks; |
| 93 | blocks += this_blocks; |
Jens Axboe | c9dd34b | 2008-06-02 10:09:43 +0200 | [diff] [blame] | 94 | block += this_blocks; |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 95 | } |
| 96 | |
Jens Axboe | a00735e | 2006-11-03 08:58:08 +0100 | [diff] [blame] | 97 | if ((blocks * min_bs) < io_u->buflen) |
| 98 | io_u->buflen = blocks * min_bs; |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 99 | } |
| 100 | |
Jens Axboe | 3e3357b | 2008-06-02 09:53:05 +0200 | [diff] [blame] | 101 | static unsigned long long last_block(struct thread_data *td, struct fio_file *f, |
| 102 | enum fio_ddir ddir) |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 103 | { |
| 104 | unsigned long long max_blocks; |
Jens Axboe | d9dd70f | 2008-05-23 12:37:23 +0200 | [diff] [blame] | 105 | unsigned long long max_size; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 106 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 107 | assert(ddir_rw(ddir)); |
| 108 | |
Jens Axboe | d9dd70f | 2008-05-23 12:37:23 +0200 | [diff] [blame] | 109 | /* |
| 110 | * Hmm, should we make sure that ->io_size <= ->real_file_size? |
| 111 | */ |
| 112 | max_size = f->io_size; |
| 113 | if (max_size > f->real_file_size) |
| 114 | max_size = f->real_file_size; |
| 115 | |
Steven Noonan | ed33585 | 2012-01-31 13:58:00 +0100 | [diff] [blame] | 116 | if (td->o.zone_range) |
| 117 | max_size = td->o.zone_range; |
| 118 | |
Jens Axboe | 2b7a01d | 2009-03-11 11:00:13 +0100 | [diff] [blame] | 119 | max_blocks = max_size / (unsigned long long) td->o.ba[ddir]; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 120 | if (!max_blocks) |
| 121 | return 0; |
| 122 | |
Jens Axboe | 67778e8 | 2008-05-15 09:20:08 +0200 | [diff] [blame] | 123 | return max_blocks; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 124 | } |
| 125 | |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 126 | /* |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 127 | * Return the next free block in the map. |
| 128 | */ |
| 129 | static int get_next_free_block(struct thread_data *td, struct fio_file *f, |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 130 | enum fio_ddir ddir, unsigned long long *b) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 131 | { |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 132 | unsigned long long block, min_bs = td->o.rw_min_bs, lastb; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 133 | int i; |
| 134 | |
Jens Axboe | 5e0baa7 | 2010-10-20 11:14:57 +0200 | [diff] [blame] | 135 | lastb = last_block(td, f, ddir); |
| 136 | if (!lastb) |
| 137 | return 1; |
| 138 | |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 139 | i = f->last_free_lookup; |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 140 | block = i * BLOCKS_PER_MAP; |
| 141 | while (block * min_bs < f->real_file_size && |
| 142 | block * min_bs < f->io_size) { |
| 143 | if (f->file_map[i] != -1UL) { |
| 144 | block += ffz(f->file_map[i]); |
| 145 | if (block > lastb) |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 146 | break; |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 147 | f->last_free_lookup = i; |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 148 | *b = block; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 149 | return 0; |
| 150 | } |
| 151 | |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 152 | block += BLOCKS_PER_MAP; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 153 | i++; |
| 154 | } |
| 155 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 156 | dprint(FD_IO, "failed finding a free block\n"); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 157 | return 1; |
| 158 | } |
| 159 | |
Jens Axboe | e25839d | 2012-11-06 10:49:42 +0100 | [diff] [blame] | 160 | static int __get_next_rand_offset(struct thread_data *td, struct fio_file *f, |
| 161 | enum fio_ddir ddir, unsigned long long *b) |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 162 | { |
Jens Axboe | 15b8772 | 2011-10-12 09:42:33 +0200 | [diff] [blame] | 163 | unsigned long long rmax, r, lastb; |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 164 | int loops = 5; |
| 165 | |
Jens Axboe | 5e0baa7 | 2010-10-20 11:14:57 +0200 | [diff] [blame] | 166 | lastb = last_block(td, f, ddir); |
| 167 | if (!lastb) |
| 168 | return 1; |
| 169 | |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 170 | if (f->failed_rands >= 200) |
| 171 | goto ffz; |
| 172 | |
Jens Axboe | 15b8772 | 2011-10-12 09:42:33 +0200 | [diff] [blame] | 173 | rmax = td->o.use_os_rand ? OS_RAND_MAX : FRAND_MAX; |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 174 | do { |
Jens Axboe | 15b8772 | 2011-10-12 09:42:33 +0200 | [diff] [blame] | 175 | if (td->o.use_os_rand) |
Jens Axboe | 2615cc4 | 2011-03-28 09:35:09 +0200 | [diff] [blame] | 176 | r = os_random_long(&td->random_state); |
Jens Axboe | 15b8772 | 2011-10-12 09:42:33 +0200 | [diff] [blame] | 177 | else |
Jens Axboe | 2615cc4 | 2011-03-28 09:35:09 +0200 | [diff] [blame] | 178 | r = __rand(&td->__random_state); |
Jens Axboe | 15b8772 | 2011-10-12 09:42:33 +0200 | [diff] [blame] | 179 | |
| 180 | *b = (lastb - 1) * (r / ((unsigned long long) rmax + 1.0)); |
Jens Axboe | 2615cc4 | 2011-03-28 09:35:09 +0200 | [diff] [blame] | 181 | |
Jens Axboe | 84422ac | 2008-02-19 20:10:26 +0100 | [diff] [blame] | 182 | dprint(FD_RANDOM, "off rand %llu\n", r); |
Jens Axboe | 2615cc4 | 2011-03-28 09:35:09 +0200 | [diff] [blame] | 183 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 184 | |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 185 | /* |
| 186 | * if we are not maintaining a random map, we are done. |
| 187 | */ |
Jens Axboe | 303032a | 2008-03-26 10:11:10 +0100 | [diff] [blame] | 188 | if (!file_randommap(td, f)) |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 189 | goto ret_good; |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 190 | |
| 191 | /* |
Jens Axboe | 84422ac | 2008-02-19 20:10:26 +0100 | [diff] [blame] | 192 | * calculate map offset and check if it's free |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 193 | */ |
Jens Axboe | aec2de2 | 2008-04-24 12:44:42 +0200 | [diff] [blame] | 194 | if (random_map_free(f, *b)) |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 195 | goto ret_good; |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 196 | |
Jens Axboe | 84422ac | 2008-02-19 20:10:26 +0100 | [diff] [blame] | 197 | dprint(FD_RANDOM, "get_next_rand_offset: offset %llu busy\n", |
| 198 | *b); |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 199 | } while (--loops); |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 200 | |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 201 | if (!f->failed_rands++) |
| 202 | f->last_free_lookup = 0; |
| 203 | |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 204 | /* |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 205 | * we get here, if we didn't suceed in looking up a block. generate |
| 206 | * a random start offset into the filemap, and find the first free |
| 207 | * block from there. |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 208 | */ |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 209 | loops = 10; |
| 210 | do { |
Jens Axboe | dc873b6 | 2008-06-04 20:13:04 +0200 | [diff] [blame] | 211 | f->last_free_lookup = (f->num_maps - 1) * |
Jens Axboe | 15b8772 | 2011-10-12 09:42:33 +0200 | [diff] [blame] | 212 | (r / ((unsigned long long) rmax + 1.0)); |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 213 | if (!get_next_free_block(td, f, ddir, b)) |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 214 | goto ret; |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 215 | |
Jens Axboe | d1cea52 | 2011-03-28 09:37:41 +0200 | [diff] [blame] | 216 | if (td->o.use_os_rand) |
| 217 | r = os_random_long(&td->random_state); |
| 218 | else |
| 219 | r = __rand(&td->__random_state); |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 220 | } while (--loops); |
| 221 | |
| 222 | /* |
| 223 | * that didn't work either, try exhaustive search from the start |
| 224 | */ |
| 225 | f->last_free_lookup = 0; |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 226 | ffz: |
| 227 | if (!get_next_free_block(td, f, ddir, b)) |
| 228 | return 0; |
| 229 | f->last_free_lookup = 0; |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 230 | return get_next_free_block(td, f, ddir, b); |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 231 | ret_good: |
| 232 | f->failed_rands = 0; |
| 233 | ret: |
| 234 | return 0; |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 235 | } |
| 236 | |
Jens Axboe | 925fee3 | 2012-11-06 13:50:32 +0100 | [diff] [blame] | 237 | static int __get_next_rand_offset_zipf(struct thread_data *td, |
| 238 | struct fio_file *f, enum fio_ddir ddir, |
| 239 | unsigned long long *b) |
Jens Axboe | e25839d | 2012-11-06 10:49:42 +0100 | [diff] [blame] | 240 | { |
Jens Axboe | 9c6f631 | 2012-11-07 09:15:45 +0100 | [diff] [blame] | 241 | *b = zipf_next(&f->zipf); |
Jens Axboe | e25839d | 2012-11-06 10:49:42 +0100 | [diff] [blame] | 242 | return 0; |
| 243 | } |
| 244 | |
Jens Axboe | 925fee3 | 2012-11-06 13:50:32 +0100 | [diff] [blame] | 245 | static int __get_next_rand_offset_pareto(struct thread_data *td, |
| 246 | struct fio_file *f, enum fio_ddir ddir, |
| 247 | unsigned long long *b) |
| 248 | { |
Jens Axboe | 9c6f631 | 2012-11-07 09:15:45 +0100 | [diff] [blame] | 249 | *b = pareto_next(&f->zipf); |
Jens Axboe | 925fee3 | 2012-11-06 13:50:32 +0100 | [diff] [blame] | 250 | return 0; |
| 251 | } |
| 252 | |
Jens Axboe | e25839d | 2012-11-06 10:49:42 +0100 | [diff] [blame] | 253 | static int get_next_rand_offset(struct thread_data *td, struct fio_file *f, |
| 254 | enum fio_ddir ddir, unsigned long long *b) |
| 255 | { |
| 256 | if (td->o.random_distribution == FIO_RAND_DIST_RANDOM) |
| 257 | return __get_next_rand_offset(td, f, ddir, b); |
| 258 | else if (td->o.random_distribution == FIO_RAND_DIST_ZIPF) |
| 259 | return __get_next_rand_offset_zipf(td, f, ddir, b); |
Jens Axboe | 925fee3 | 2012-11-06 13:50:32 +0100 | [diff] [blame] | 260 | else if (td->o.random_distribution == FIO_RAND_DIST_PARETO) |
| 261 | return __get_next_rand_offset_pareto(td, f, ddir, b); |
Jens Axboe | e25839d | 2012-11-06 10:49:42 +0100 | [diff] [blame] | 262 | |
| 263 | log_err("fio: unknown random distribution: %d\n", td->o.random_distribution); |
| 264 | return 1; |
| 265 | } |
| 266 | |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 267 | static int get_next_rand_block(struct thread_data *td, struct fio_file *f, |
| 268 | enum fio_ddir ddir, unsigned long long *b) |
| 269 | { |
Daniel Ehrenberg | c04e466 | 2012-03-16 18:54:15 +0100 | [diff] [blame] | 270 | if (!get_next_rand_offset(td, f, ddir, b)) |
| 271 | return 0; |
| 272 | |
| 273 | if (td->o.time_based) { |
| 274 | fio_file_reset(f); |
| 275 | if (!get_next_rand_offset(td, f, ddir, b)) |
| 276 | return 0; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 277 | } |
| 278 | |
Daniel Ehrenberg | c04e466 | 2012-03-16 18:54:15 +0100 | [diff] [blame] | 279 | dprint(FD_IO, "%s: rand offset failed, last=%llu, size=%llu\n", |
| 280 | f->file_name, f->last_pos, f->real_file_size); |
| 281 | return 1; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 282 | } |
| 283 | |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 284 | static int get_next_seq_offset(struct thread_data *td, struct fio_file *f, |
| 285 | enum fio_ddir ddir, unsigned long long *offset) |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 286 | { |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 287 | assert(ddir_rw(ddir)); |
| 288 | |
Dan Ehrenberg | ce95d65 | 2012-08-16 08:58:21 +0200 | [diff] [blame] | 289 | if (f->last_pos >= f->io_size + get_start_offset(td) && td->o.time_based) |
Daniel Ehrenberg | c04e466 | 2012-03-16 18:54:15 +0100 | [diff] [blame] | 290 | f->last_pos = f->last_pos - f->io_size; |
| 291 | |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 292 | if (f->last_pos < f->real_file_size) { |
Jens Axboe | a66da7a | 2011-08-31 13:14:12 -0600 | [diff] [blame] | 293 | unsigned long long pos; |
Jens Axboe | 059b080 | 2011-08-25 09:09:37 +0200 | [diff] [blame] | 294 | |
Jens Axboe | a66da7a | 2011-08-31 13:14:12 -0600 | [diff] [blame] | 295 | if (f->last_pos == f->file_offset && td->o.ddir_seq_add < 0) |
| 296 | f->last_pos = f->real_file_size; |
| 297 | |
| 298 | pos = f->last_pos - f->file_offset; |
Jens Axboe | 059b080 | 2011-08-25 09:09:37 +0200 | [diff] [blame] | 299 | if (pos) |
| 300 | pos += td->o.ddir_seq_add; |
| 301 | |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 302 | *offset = pos; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 303 | return 0; |
| 304 | } |
| 305 | |
| 306 | return 1; |
| 307 | } |
| 308 | |
| 309 | static int get_next_block(struct thread_data *td, struct io_u *io_u, |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 310 | enum fio_ddir ddir, int rw_seq) |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 311 | { |
| 312 | struct fio_file *f = io_u->file; |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 313 | unsigned long long b, offset; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 314 | int ret; |
| 315 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 316 | assert(ddir_rw(ddir)); |
| 317 | |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 318 | b = offset = -1ULL; |
| 319 | |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 320 | if (rw_seq) { |
| 321 | if (td_random(td)) |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 322 | ret = get_next_rand_block(td, f, ddir, &b); |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 323 | else |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 324 | ret = get_next_seq_offset(td, f, ddir, &offset); |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 325 | } else { |
| 326 | io_u->flags |= IO_U_F_BUSY_OK; |
| 327 | |
| 328 | if (td->o.rw_seq == RW_SEQ_SEQ) { |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 329 | ret = get_next_seq_offset(td, f, ddir, &offset); |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 330 | if (ret) |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 331 | ret = get_next_rand_block(td, f, ddir, &b); |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 332 | } else if (td->o.rw_seq == RW_SEQ_IDENT) { |
| 333 | if (f->last_start != -1ULL) |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 334 | offset = f->last_start - f->file_offset; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 335 | else |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 336 | offset = 0; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 337 | ret = 0; |
| 338 | } else { |
| 339 | log_err("fio: unknown rw_seq=%d\n", td->o.rw_seq); |
| 340 | ret = 1; |
| 341 | } |
| 342 | } |
| 343 | |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 344 | if (!ret) { |
| 345 | if (offset != -1ULL) |
| 346 | io_u->offset = offset; |
| 347 | else if (b != -1ULL) |
| 348 | io_u->offset = b * td->o.ba[ddir]; |
| 349 | else { |
| 350 | log_err("fio: bug in offset generation\n"); |
| 351 | ret = 1; |
| 352 | } |
| 353 | } |
| 354 | |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 355 | return ret; |
| 356 | } |
| 357 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 358 | /* |
| 359 | * For random io, generate a random new block and see if it's used. Repeat |
| 360 | * until we find a free one. For sequential io, just return the end of |
| 361 | * the last io issued. |
| 362 | */ |
Jens Axboe | 15dc193 | 2010-03-05 10:59:06 +0100 | [diff] [blame] | 363 | static int __get_next_offset(struct thread_data *td, struct io_u *io_u) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 364 | { |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 365 | struct fio_file *f = io_u->file; |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 366 | enum fio_ddir ddir = io_u->ddir; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 367 | int rw_seq_hit = 0; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 368 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 369 | assert(ddir_rw(ddir)); |
| 370 | |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 371 | if (td->o.ddir_seq_nr && !--td->ddir_seq_nr) { |
| 372 | rw_seq_hit = 1; |
Jens Axboe | 5736c10 | 2010-07-20 12:03:25 -0600 | [diff] [blame] | 373 | td->ddir_seq_nr = td->o.ddir_seq_nr; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 374 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 375 | |
Jens Axboe | 37cf9e3 | 2012-03-17 12:54:30 +0100 | [diff] [blame] | 376 | if (get_next_block(td, io_u, ddir, rw_seq_hit)) |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 377 | return 1; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 378 | |
Jens Axboe | 009bd84 | 2008-05-15 10:19:46 +0200 | [diff] [blame] | 379 | if (io_u->offset >= f->io_size) { |
| 380 | dprint(FD_IO, "get_next_offset: offset %llu >= io_size %llu\n", |
| 381 | io_u->offset, f->io_size); |
| 382 | return 1; |
| 383 | } |
| 384 | |
| 385 | io_u->offset += f->file_offset; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 386 | if (io_u->offset >= f->real_file_size) { |
| 387 | dprint(FD_IO, "get_next_offset: offset %llu >= size %llu\n", |
| 388 | io_u->offset, f->real_file_size); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 389 | return 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 390 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 391 | |
| 392 | return 0; |
| 393 | } |
| 394 | |
Jens Axboe | 15dc193 | 2010-03-05 10:59:06 +0100 | [diff] [blame] | 395 | static int get_next_offset(struct thread_data *td, struct io_u *io_u) |
| 396 | { |
Jens Axboe | 7eb3657 | 2010-03-08 13:58:49 +0100 | [diff] [blame] | 397 | struct prof_io_ops *ops = &td->prof_io_ops; |
| 398 | |
| 399 | if (ops->fill_io_u_off) |
| 400 | return ops->fill_io_u_off(td, io_u); |
Jens Axboe | 15dc193 | 2010-03-05 10:59:06 +0100 | [diff] [blame] | 401 | |
| 402 | return __get_next_offset(td, io_u); |
| 403 | } |
| 404 | |
Jens Axboe | 7994412 | 2011-05-24 11:26:16 +0200 | [diff] [blame] | 405 | static inline int io_u_fits(struct thread_data *td, struct io_u *io_u, |
| 406 | unsigned int buflen) |
| 407 | { |
| 408 | struct fio_file *f = io_u->file; |
| 409 | |
Dan Ehrenberg | ce95d65 | 2012-08-16 08:58:21 +0200 | [diff] [blame] | 410 | return io_u->offset + buflen <= f->io_size + get_start_offset(td); |
Jens Axboe | 7994412 | 2011-05-24 11:26:16 +0200 | [diff] [blame] | 411 | } |
| 412 | |
Jens Axboe | 15dc193 | 2010-03-05 10:59:06 +0100 | [diff] [blame] | 413 | static unsigned int __get_next_buflen(struct thread_data *td, struct io_u *io_u) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 414 | { |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 415 | const int ddir = io_u->ddir; |
Jens Axboe | f3f552b | 2008-06-13 10:27:05 +0200 | [diff] [blame] | 416 | unsigned int uninitialized_var(buflen); |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 417 | unsigned int minbs, maxbs; |
Jens Axboe | 1294c3e | 2011-05-11 08:15:18 +0200 | [diff] [blame] | 418 | unsigned long r, rand_max; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 419 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 420 | assert(ddir_rw(ddir)); |
| 421 | |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 422 | minbs = td->o.min_bs[ddir]; |
| 423 | maxbs = td->o.max_bs[ddir]; |
| 424 | |
Jens Axboe | 7994412 | 2011-05-24 11:26:16 +0200 | [diff] [blame] | 425 | if (minbs == maxbs) |
| 426 | return minbs; |
| 427 | |
Jens Axboe | 52c5802 | 2012-02-06 21:58:56 +0100 | [diff] [blame] | 428 | /* |
| 429 | * If we can't satisfy the min block size from here, then fail |
| 430 | */ |
| 431 | if (!io_u_fits(td, io_u, minbs)) |
| 432 | return 0; |
| 433 | |
Jens Axboe | 4c07ad8 | 2011-03-28 09:51:09 +0200 | [diff] [blame] | 434 | if (td->o.use_os_rand) |
| 435 | rand_max = OS_RAND_MAX; |
| 436 | else |
| 437 | rand_max = FRAND_MAX; |
| 438 | |
Jens Axboe | 7994412 | 2011-05-24 11:26:16 +0200 | [diff] [blame] | 439 | do { |
Jens Axboe | 4c07ad8 | 2011-03-28 09:51:09 +0200 | [diff] [blame] | 440 | if (td->o.use_os_rand) |
| 441 | r = os_random_long(&td->bsrange_state); |
| 442 | else |
| 443 | r = __rand(&td->__bsrange_state); |
| 444 | |
Jens Axboe | 720e84a | 2009-04-21 08:29:55 +0200 | [diff] [blame] | 445 | if (!td->o.bssplit_nr[ddir]) { |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 446 | buflen = 1 + (unsigned int) ((double) maxbs * |
Jens Axboe | 4c07ad8 | 2011-03-28 09:51:09 +0200 | [diff] [blame] | 447 | (r / (rand_max + 1.0))); |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 448 | if (buflen < minbs) |
| 449 | buflen = minbs; |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 450 | } else { |
Jens Axboe | 564ca97 | 2007-12-14 12:21:19 +0100 | [diff] [blame] | 451 | long perc = 0; |
| 452 | unsigned int i; |
| 453 | |
Jens Axboe | 720e84a | 2009-04-21 08:29:55 +0200 | [diff] [blame] | 454 | for (i = 0; i < td->o.bssplit_nr[ddir]; i++) { |
| 455 | struct bssplit *bsp = &td->o.bssplit[ddir][i]; |
Jens Axboe | 564ca97 | 2007-12-14 12:21:19 +0100 | [diff] [blame] | 456 | |
| 457 | buflen = bsp->bs; |
| 458 | perc += bsp->perc; |
Jens Axboe | 7994412 | 2011-05-24 11:26:16 +0200 | [diff] [blame] | 459 | if ((r <= ((rand_max / 100L) * perc)) && |
| 460 | io_u_fits(td, io_u, buflen)) |
Jens Axboe | 564ca97 | 2007-12-14 12:21:19 +0100 | [diff] [blame] | 461 | break; |
| 462 | } |
| 463 | } |
Jens Axboe | 7994412 | 2011-05-24 11:26:16 +0200 | [diff] [blame] | 464 | |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 465 | if (!td->o.bs_unaligned && is_power_of_2(minbs)) |
| 466 | buflen = (buflen + minbs - 1) & ~(minbs - 1); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 467 | |
Jens Axboe | 7994412 | 2011-05-24 11:26:16 +0200 | [diff] [blame] | 468 | } while (!io_u_fits(td, io_u, buflen)); |
Jens Axboe | 6a5e688 | 2007-07-26 10:47:51 +0200 | [diff] [blame] | 469 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 470 | return buflen; |
| 471 | } |
| 472 | |
Jens Axboe | 15dc193 | 2010-03-05 10:59:06 +0100 | [diff] [blame] | 473 | static unsigned int get_next_buflen(struct thread_data *td, struct io_u *io_u) |
| 474 | { |
Jens Axboe | 7eb3657 | 2010-03-08 13:58:49 +0100 | [diff] [blame] | 475 | struct prof_io_ops *ops = &td->prof_io_ops; |
| 476 | |
| 477 | if (ops->fill_io_u_size) |
| 478 | return ops->fill_io_u_size(td, io_u); |
Jens Axboe | 15dc193 | 2010-03-05 10:59:06 +0100 | [diff] [blame] | 479 | |
| 480 | return __get_next_buflen(td, io_u); |
| 481 | } |
| 482 | |
Jens Axboe | afe24a5 | 2007-03-16 20:27:27 +0100 | [diff] [blame] | 483 | static void set_rwmix_bytes(struct thread_data *td) |
| 484 | { |
Jens Axboe | afe24a5 | 2007-03-16 20:27:27 +0100 | [diff] [blame] | 485 | unsigned int diff; |
| 486 | |
| 487 | /* |
| 488 | * we do time or byte based switch. this is needed because |
| 489 | * buffered writes may issue a lot quicker than they complete, |
| 490 | * whereas reads do not. |
| 491 | */ |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 492 | diff = td->o.rwmix[td->rwmix_ddir ^ 1]; |
Jens Axboe | 04c540d | 2008-05-28 10:35:26 +0200 | [diff] [blame] | 493 | td->rwmix_issues = (td->io_issues[td->rwmix_ddir] * diff) / 100; |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 494 | } |
| 495 | |
| 496 | static inline enum fio_ddir get_rand_ddir(struct thread_data *td) |
| 497 | { |
| 498 | unsigned int v; |
Jens Axboe | 1294c3e | 2011-05-11 08:15:18 +0200 | [diff] [blame] | 499 | unsigned long r; |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 500 | |
Jens Axboe | 4c07ad8 | 2011-03-28 09:51:09 +0200 | [diff] [blame] | 501 | if (td->o.use_os_rand) { |
| 502 | r = os_random_long(&td->rwmix_state); |
| 503 | v = 1 + (int) (100.0 * (r / (OS_RAND_MAX + 1.0))); |
| 504 | } else { |
| 505 | r = __rand(&td->__rwmix_state); |
| 506 | v = 1 + (int) (100.0 * (r / (FRAND_MAX + 1.0))); |
| 507 | } |
| 508 | |
Jens Axboe | 04c540d | 2008-05-28 10:35:26 +0200 | [diff] [blame] | 509 | if (v <= td->o.rwmix[DDIR_READ]) |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 510 | return DDIR_READ; |
| 511 | |
| 512 | return DDIR_WRITE; |
Jens Axboe | afe24a5 | 2007-03-16 20:27:27 +0100 | [diff] [blame] | 513 | } |
| 514 | |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 515 | static enum fio_ddir rate_ddir(struct thread_data *td, enum fio_ddir ddir) |
| 516 | { |
| 517 | enum fio_ddir odir = ddir ^ 1; |
| 518 | struct timeval t; |
| 519 | long usec; |
| 520 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 521 | assert(ddir_rw(ddir)); |
| 522 | |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 523 | if (td->rate_pending_usleep[ddir] <= 0) |
| 524 | return ddir; |
| 525 | |
| 526 | /* |
| 527 | * We have too much pending sleep in this direction. See if we |
| 528 | * should switch. |
| 529 | */ |
| 530 | if (td_rw(td)) { |
| 531 | /* |
| 532 | * Other direction does not have too much pending, switch |
| 533 | */ |
| 534 | if (td->rate_pending_usleep[odir] < 100000) |
| 535 | return odir; |
| 536 | |
| 537 | /* |
| 538 | * Both directions have pending sleep. Sleep the minimum time |
| 539 | * and deduct from both. |
| 540 | */ |
| 541 | if (td->rate_pending_usleep[ddir] <= |
| 542 | td->rate_pending_usleep[odir]) { |
| 543 | usec = td->rate_pending_usleep[ddir]; |
| 544 | } else { |
| 545 | usec = td->rate_pending_usleep[odir]; |
| 546 | ddir = odir; |
| 547 | } |
| 548 | } else |
| 549 | usec = td->rate_pending_usleep[ddir]; |
| 550 | |
Jens Axboe | 78c1eda | 2011-08-30 15:34:14 -0600 | [diff] [blame] | 551 | /* |
| 552 | * We are going to sleep, ensure that we flush anything pending as |
Ryan Marchand | 422f9e4 | 2012-01-31 14:05:32 +0100 | [diff] [blame] | 553 | * not to skew our latency numbers. |
| 554 | * |
| 555 | * Changed to only monitor 'in flight' requests here instead of the |
| 556 | * td->cur_depth, b/c td->cur_depth does not accurately represent |
| 557 | * io's that have been actually submitted to an async engine, |
| 558 | * and cur_depth is meaningless for sync engines. |
Jens Axboe | 78c1eda | 2011-08-30 15:34:14 -0600 | [diff] [blame] | 559 | */ |
Ryan Marchand | 422f9e4 | 2012-01-31 14:05:32 +0100 | [diff] [blame] | 560 | if (td->io_u_in_flight) { |
Jens Axboe | 78c1eda | 2011-08-30 15:34:14 -0600 | [diff] [blame] | 561 | int fio_unused ret; |
| 562 | |
Ryan Marchand | 422f9e4 | 2012-01-31 14:05:32 +0100 | [diff] [blame] | 563 | ret = io_u_queued_complete(td, td->io_u_in_flight, NULL); |
Jens Axboe | 78c1eda | 2011-08-30 15:34:14 -0600 | [diff] [blame] | 564 | } |
| 565 | |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 566 | fio_gettime(&t, NULL); |
| 567 | usec_sleep(td, usec); |
| 568 | usec = utime_since_now(&t); |
| 569 | |
| 570 | td->rate_pending_usleep[ddir] -= usec; |
| 571 | |
| 572 | odir = ddir ^ 1; |
| 573 | if (td_rw(td) && __should_check_rate(td, odir)) |
| 574 | td->rate_pending_usleep[odir] -= usec; |
Jens Axboe | 0b9d69e | 2009-09-11 22:29:54 +0200 | [diff] [blame] | 575 | |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 576 | if (ddir_trim(ddir)) |
| 577 | return ddir; |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 578 | return ddir; |
| 579 | } |
| 580 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 581 | /* |
| 582 | * Return the data direction for the next io_u. If the job is a |
| 583 | * mixed read/write workload, check the rwmix cycle and switch if |
| 584 | * necessary. |
| 585 | */ |
Jens Axboe | 1e97cce | 2006-12-05 11:44:16 +0100 | [diff] [blame] | 586 | static enum fio_ddir get_rw_ddir(struct thread_data *td) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 587 | { |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 588 | enum fio_ddir ddir; |
| 589 | |
Jens Axboe | 5f9099e | 2009-06-16 22:40:26 +0200 | [diff] [blame] | 590 | /* |
| 591 | * see if it's time to fsync |
| 592 | */ |
| 593 | if (td->o.fsync_blocks && |
| 594 | !(td->io_issues[DDIR_WRITE] % td->o.fsync_blocks) && |
| 595 | td->io_issues[DDIR_WRITE] && should_fsync(td)) |
| 596 | return DDIR_SYNC; |
| 597 | |
| 598 | /* |
| 599 | * see if it's time to fdatasync |
| 600 | */ |
| 601 | if (td->o.fdatasync_blocks && |
| 602 | !(td->io_issues[DDIR_WRITE] % td->o.fdatasync_blocks) && |
| 603 | td->io_issues[DDIR_WRITE] && should_fsync(td)) |
| 604 | return DDIR_DATASYNC; |
| 605 | |
Jens Axboe | 44f2969 | 2010-03-09 20:09:44 +0100 | [diff] [blame] | 606 | /* |
| 607 | * see if it's time to sync_file_range |
| 608 | */ |
| 609 | if (td->sync_file_range_nr && |
| 610 | !(td->io_issues[DDIR_WRITE] % td->sync_file_range_nr) && |
| 611 | td->io_issues[DDIR_WRITE] && should_fsync(td)) |
| 612 | return DDIR_SYNC_FILE_RANGE; |
| 613 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 614 | if (td_rw(td)) { |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 615 | /* |
| 616 | * Check if it's time to seed a new data direction. |
| 617 | */ |
Jens Axboe | e492866 | 2008-04-07 09:19:46 +0200 | [diff] [blame] | 618 | if (td->io_issues[td->rwmix_ddir] >= td->rwmix_issues) { |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 619 | /* |
| 620 | * Put a top limit on how many bytes we do for |
| 621 | * one data direction, to avoid overflowing the |
| 622 | * ranges too much |
| 623 | */ |
| 624 | ddir = get_rand_ddir(td); |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 625 | |
| 626 | if (ddir != td->rwmix_ddir) |
| 627 | set_rwmix_bytes(td); |
| 628 | |
| 629 | td->rwmix_ddir = ddir; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 630 | } |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 631 | ddir = td->rwmix_ddir; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 632 | } else if (td_read(td)) |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 633 | ddir = DDIR_READ; |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 634 | else if (td_write(td)) |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 635 | ddir = DDIR_WRITE; |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 636 | else |
| 637 | ddir = DDIR_TRIM; |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 638 | |
| 639 | td->rwmix_ddir = rate_ddir(td, ddir); |
| 640 | return td->rwmix_ddir; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 641 | } |
| 642 | |
Jens Axboe | 1ef2b6b | 2010-10-08 15:07:01 +0200 | [diff] [blame] | 643 | static void set_rw_ddir(struct thread_data *td, struct io_u *io_u) |
| 644 | { |
| 645 | io_u->ddir = get_rw_ddir(td); |
| 646 | |
| 647 | if (io_u->ddir == DDIR_WRITE && (td->io_ops->flags & FIO_BARRIER) && |
| 648 | td->o.barrier_blocks && |
| 649 | !(td->io_issues[DDIR_WRITE] % td->o.barrier_blocks) && |
| 650 | td->io_issues[DDIR_WRITE]) |
| 651 | io_u->flags |= IO_U_F_BARRIER; |
| 652 | } |
| 653 | |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 654 | void put_file_log(struct thread_data *td, struct fio_file *f) |
Jens Axboe | 60f2c65 | 2008-05-16 12:31:36 +0200 | [diff] [blame] | 655 | { |
| 656 | int ret = put_file(td, f); |
| 657 | |
| 658 | if (ret) |
| 659 | td_verror(td, ret, "file close"); |
| 660 | } |
| 661 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 662 | void put_io_u(struct thread_data *td, struct io_u *io_u) |
| 663 | { |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 664 | td_io_u_lock(td); |
| 665 | |
Steven Lang | d7ee2a7 | 2011-10-26 09:46:50 +0200 | [diff] [blame] | 666 | if (io_u->file && !(io_u->flags & IO_U_F_FREE_DEF)) |
Jens Axboe | 60f2c65 | 2008-05-16 12:31:36 +0200 | [diff] [blame] | 667 | put_file_log(td, io_u->file); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 668 | io_u->file = NULL; |
Steven Lang | d7ee2a7 | 2011-10-26 09:46:50 +0200 | [diff] [blame] | 669 | io_u->flags &= ~IO_U_F_FREE_DEF; |
| 670 | io_u->flags |= IO_U_F_FREE; |
| 671 | |
Radha Ramachandran | 0c41214 | 2009-11-03 21:45:31 +0100 | [diff] [blame] | 672 | if (io_u->flags & IO_U_F_IN_CUR_DEPTH) |
| 673 | td->cur_depth--; |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 674 | flist_del_init(&io_u->list); |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 675 | flist_add(&io_u->list, &td->io_u_freelist); |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 676 | td_io_u_unlock(td); |
| 677 | td_io_u_free_notify(td); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 678 | } |
| 679 | |
Radha Ramachandran | f2bba18 | 2009-06-15 08:40:16 +0200 | [diff] [blame] | 680 | void clear_io_u(struct thread_data *td, struct io_u *io_u) |
| 681 | { |
| 682 | io_u->flags &= ~IO_U_F_FLIGHT; |
| 683 | put_io_u(td, io_u); |
| 684 | } |
| 685 | |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 686 | void requeue_io_u(struct thread_data *td, struct io_u **io_u) |
| 687 | { |
| 688 | struct io_u *__io_u = *io_u; |
| 689 | |
Jens Axboe | 465221b | 2008-05-30 22:07:49 +0200 | [diff] [blame] | 690 | dprint(FD_IO, "requeue %p\n", __io_u); |
| 691 | |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 692 | td_io_u_lock(td); |
| 693 | |
Jens Axboe | 4d2e0f4 | 2007-02-24 13:31:57 +0100 | [diff] [blame] | 694 | __io_u->flags |= IO_U_F_FREE; |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 695 | if ((__io_u->flags & IO_U_F_FLIGHT) && ddir_rw(__io_u->ddir)) |
Jens Axboe | e4f54ad | 2008-02-04 10:56:07 +0100 | [diff] [blame] | 696 | td->io_issues[__io_u->ddir]--; |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 697 | |
Jens Axboe | 4d2e0f4 | 2007-02-24 13:31:57 +0100 | [diff] [blame] | 698 | __io_u->flags &= ~IO_U_F_FLIGHT; |
Radha Ramachandran | 0c41214 | 2009-11-03 21:45:31 +0100 | [diff] [blame] | 699 | if (__io_u->flags & IO_U_F_IN_CUR_DEPTH) |
| 700 | td->cur_depth--; |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 701 | flist_del(&__io_u->list); |
| 702 | flist_add_tail(&__io_u->list, &td->io_u_requeues); |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 703 | td_io_u_unlock(td); |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 704 | *io_u = NULL; |
| 705 | } |
| 706 | |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 707 | 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] | 708 | { |
Jens Axboe | b4c5e1a | 2007-10-25 18:44:45 +0200 | [diff] [blame] | 709 | if (td->io_ops->flags & FIO_NOIO) |
| 710 | goto out; |
| 711 | |
Jens Axboe | 1ef2b6b | 2010-10-08 15:07:01 +0200 | [diff] [blame] | 712 | set_rw_ddir(td, io_u); |
Jens Axboe | a00735e | 2006-11-03 08:58:08 +0100 | [diff] [blame] | 713 | |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 714 | /* |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 715 | * fsync() or fdatasync() or trim etc, we are done |
Jens Axboe | 5f9099e | 2009-06-16 22:40:26 +0200 | [diff] [blame] | 716 | */ |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 717 | if (!ddir_rw(io_u->ddir)) |
Jens Axboe | 5f9099e | 2009-06-16 22:40:26 +0200 | [diff] [blame] | 718 | goto out; |
| 719 | |
| 720 | /* |
Jens Axboe | 48f5abd | 2007-07-20 13:25:04 +0200 | [diff] [blame] | 721 | * See if it's time to switch to a new zone |
| 722 | */ |
Jens Axboe | 13af05a | 2012-02-11 09:04:02 +0100 | [diff] [blame] | 723 | if (td->zone_bytes >= td->o.zone_size && td->o.zone_skip) { |
Jens Axboe | 48f5abd | 2007-07-20 13:25:04 +0200 | [diff] [blame] | 724 | td->zone_bytes = 0; |
Steven Noonan | ed33585 | 2012-01-31 13:58:00 +0100 | [diff] [blame] | 725 | io_u->file->file_offset += td->o.zone_range + td->o.zone_skip; |
| 726 | io_u->file->last_pos = io_u->file->file_offset; |
Jens Axboe | 48f5abd | 2007-07-20 13:25:04 +0200 | [diff] [blame] | 727 | td->io_skip_bytes += td->o.zone_skip; |
| 728 | } |
| 729 | |
| 730 | /* |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 731 | * No log, let the seq/rand engine retrieve the next buflen and |
| 732 | * position. |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 733 | */ |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 734 | if (get_next_offset(td, io_u)) { |
| 735 | dprint(FD_IO, "io_u %p, failed getting offset\n", io_u); |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 736 | return 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 737 | } |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 738 | |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 739 | io_u->buflen = get_next_buflen(td, io_u); |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 740 | if (!io_u->buflen) { |
| 741 | dprint(FD_IO, "io_u %p, failed getting buflen\n", io_u); |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 742 | return 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 743 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 744 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 745 | if (io_u->offset + io_u->buflen > io_u->file->real_file_size) { |
| 746 | dprint(FD_IO, "io_u %p, offset too large\n", io_u); |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 747 | dprint(FD_IO, " off=%llu/%lu > %llu\n", io_u->offset, |
| 748 | io_u->buflen, io_u->file->real_file_size); |
Jens Axboe | 6a5e688 | 2007-07-26 10:47:51 +0200 | [diff] [blame] | 749 | return 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 750 | } |
Jens Axboe | 6a5e688 | 2007-07-26 10:47:51 +0200 | [diff] [blame] | 751 | |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 752 | /* |
| 753 | * mark entry before potentially trimming io_u |
| 754 | */ |
Jens Axboe | 303032a | 2008-03-26 10:11:10 +0100 | [diff] [blame] | 755 | if (td_random(td) && file_randommap(td, io_u->file)) |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 756 | mark_random_map(td, io_u); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 757 | |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 758 | /* |
| 759 | * If using a write iolog, store this entry. |
| 760 | */ |
Jens Axboe | c38e946 | 2007-03-27 08:48:48 +0200 | [diff] [blame] | 761 | out: |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 762 | dprint_io_u(io_u, "fill_io_u"); |
Jens Axboe | d9d91e3 | 2008-01-31 13:25:42 +0100 | [diff] [blame] | 763 | td->zone_bytes += io_u->buflen; |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 764 | log_io_u(td, io_u); |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 765 | return 0; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 766 | } |
| 767 | |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 768 | static void __io_u_mark_map(unsigned int *map, unsigned int nr) |
| 769 | { |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 770 | int idx = 0; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 771 | |
| 772 | switch (nr) { |
| 773 | default: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 774 | idx = 6; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 775 | break; |
| 776 | case 33 ... 64: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 777 | idx = 5; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 778 | break; |
| 779 | case 17 ... 32: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 780 | idx = 4; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 781 | break; |
| 782 | case 9 ... 16: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 783 | idx = 3; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 784 | break; |
| 785 | case 5 ... 8: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 786 | idx = 2; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 787 | break; |
| 788 | case 1 ... 4: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 789 | idx = 1; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 790 | case 0: |
| 791 | break; |
| 792 | } |
| 793 | |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 794 | map[idx]++; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 795 | } |
| 796 | |
| 797 | void io_u_mark_submit(struct thread_data *td, unsigned int nr) |
| 798 | { |
| 799 | __io_u_mark_map(td->ts.io_u_submit, nr); |
| 800 | td->ts.total_submit++; |
| 801 | } |
| 802 | |
| 803 | void io_u_mark_complete(struct thread_data *td, unsigned int nr) |
| 804 | { |
| 805 | __io_u_mark_map(td->ts.io_u_complete, nr); |
| 806 | td->ts.total_complete++; |
| 807 | } |
| 808 | |
Jens Axboe | d800575 | 2008-05-15 09:49:09 +0200 | [diff] [blame] | 809 | void io_u_mark_depth(struct thread_data *td, unsigned int nr) |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 810 | { |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 811 | int idx = 0; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 812 | |
| 813 | switch (td->cur_depth) { |
| 814 | default: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 815 | idx = 6; |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 816 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 817 | case 32 ... 63: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 818 | idx = 5; |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 819 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 820 | case 16 ... 31: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 821 | idx = 4; |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 822 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 823 | case 8 ... 15: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 824 | idx = 3; |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 825 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 826 | case 4 ... 7: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 827 | idx = 2; |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 828 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 829 | case 2 ... 3: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 830 | idx = 1; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 831 | case 1: |
| 832 | break; |
| 833 | } |
| 834 | |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 835 | td->ts.io_u_map[idx] += nr; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 836 | } |
| 837 | |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 838 | static void io_u_mark_lat_usec(struct thread_data *td, unsigned long usec) |
| 839 | { |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 840 | int idx = 0; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 841 | |
| 842 | assert(usec < 1000); |
| 843 | |
| 844 | switch (usec) { |
| 845 | case 750 ... 999: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 846 | idx = 9; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 847 | break; |
| 848 | case 500 ... 749: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 849 | idx = 8; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 850 | break; |
| 851 | case 250 ... 499: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 852 | idx = 7; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 853 | break; |
| 854 | case 100 ... 249: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 855 | idx = 6; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 856 | break; |
| 857 | case 50 ... 99: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 858 | idx = 5; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 859 | break; |
| 860 | case 20 ... 49: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 861 | idx = 4; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 862 | break; |
| 863 | case 10 ... 19: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 864 | idx = 3; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 865 | break; |
| 866 | case 4 ... 9: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 867 | idx = 2; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 868 | break; |
| 869 | case 2 ... 3: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 870 | idx = 1; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 871 | case 0 ... 1: |
| 872 | break; |
| 873 | } |
| 874 | |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 875 | assert(idx < FIO_IO_U_LAT_U_NR); |
| 876 | td->ts.io_u_lat_u[idx]++; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 877 | } |
| 878 | |
| 879 | 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] | 880 | { |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 881 | int idx = 0; |
Jens Axboe | ec11830 | 2007-02-17 04:38:20 +0100 | [diff] [blame] | 882 | |
| 883 | switch (msec) { |
| 884 | default: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 885 | idx = 11; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 886 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 887 | case 1000 ... 1999: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 888 | idx = 10; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 889 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 890 | case 750 ... 999: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 891 | idx = 9; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 892 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 893 | case 500 ... 749: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 894 | idx = 8; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 895 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 896 | case 250 ... 499: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 897 | idx = 7; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 898 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 899 | case 100 ... 249: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 900 | idx = 6; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 901 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 902 | case 50 ... 99: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 903 | idx = 5; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 904 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 905 | case 20 ... 49: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 906 | idx = 4; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 907 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 908 | case 10 ... 19: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 909 | idx = 3; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 910 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 911 | case 4 ... 9: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 912 | idx = 2; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 913 | break; |
Jens Axboe | ec11830 | 2007-02-17 04:38:20 +0100 | [diff] [blame] | 914 | case 2 ... 3: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 915 | idx = 1; |
Jens Axboe | ec11830 | 2007-02-17 04:38:20 +0100 | [diff] [blame] | 916 | case 0 ... 1: |
| 917 | break; |
| 918 | } |
| 919 | |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 920 | assert(idx < FIO_IO_U_LAT_M_NR); |
| 921 | td->ts.io_u_lat_m[idx]++; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 922 | } |
| 923 | |
| 924 | static void io_u_mark_latency(struct thread_data *td, unsigned long usec) |
| 925 | { |
| 926 | if (usec < 1000) |
| 927 | io_u_mark_lat_usec(td, usec); |
| 928 | else |
| 929 | io_u_mark_lat_msec(td, usec / 1000); |
Jens Axboe | ec11830 | 2007-02-17 04:38:20 +0100 | [diff] [blame] | 930 | } |
| 931 | |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 932 | /* |
| 933 | * Get next file to service by choosing one at random |
| 934 | */ |
Jens Axboe | 2cc5293 | 2009-06-09 14:14:20 +0200 | [diff] [blame] | 935 | static struct fio_file *get_next_file_rand(struct thread_data *td, |
| 936 | enum fio_file_flags goodf, |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 937 | enum fio_file_flags badf) |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 938 | { |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 939 | struct fio_file *f; |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 940 | int fno; |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 941 | |
| 942 | do { |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 943 | int opened = 0; |
Jens Axboe | 1294c3e | 2011-05-11 08:15:18 +0200 | [diff] [blame] | 944 | unsigned long r; |
Jens Axboe | 7c83c08 | 2007-03-01 10:04:15 +0100 | [diff] [blame] | 945 | |
Jens Axboe | 4c07ad8 | 2011-03-28 09:51:09 +0200 | [diff] [blame] | 946 | if (td->o.use_os_rand) { |
| 947 | r = os_random_long(&td->next_file_state); |
| 948 | fno = (unsigned int) ((double) td->o.nr_files |
| 949 | * (r / (OS_RAND_MAX + 1.0))); |
| 950 | } else { |
| 951 | r = __rand(&td->__next_file_state); |
| 952 | fno = (unsigned int) ((double) td->o.nr_files |
| 953 | * (r / (FRAND_MAX + 1.0))); |
| 954 | } |
| 955 | |
Jens Axboe | 126d65c | 2008-03-01 18:04:31 +0100 | [diff] [blame] | 956 | f = td->files[fno]; |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 957 | if (fio_file_done(f)) |
Jens Axboe | 059e63c | 2007-03-27 20:34:47 +0200 | [diff] [blame] | 958 | continue; |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 959 | |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 960 | if (!fio_file_open(f)) { |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 961 | int err; |
| 962 | |
| 963 | err = td_io_open_file(td, f); |
| 964 | if (err) |
| 965 | continue; |
| 966 | opened = 1; |
| 967 | } |
| 968 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 969 | if ((!goodf || (f->flags & goodf)) && !(f->flags & badf)) { |
| 970 | dprint(FD_FILE, "get_next_file_rand: %p\n", f); |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 971 | return f; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 972 | } |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 973 | if (opened) |
| 974 | td_io_close_file(td, f); |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 975 | } while (1); |
| 976 | } |
| 977 | |
| 978 | /* |
| 979 | * Get next file to service by doing round robin between all available ones |
| 980 | */ |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 981 | static struct fio_file *get_next_file_rr(struct thread_data *td, int goodf, |
| 982 | int badf) |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 983 | { |
| 984 | unsigned int old_next_file = td->next_file; |
| 985 | struct fio_file *f; |
| 986 | |
| 987 | do { |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 988 | int opened = 0; |
| 989 | |
Jens Axboe | 126d65c | 2008-03-01 18:04:31 +0100 | [diff] [blame] | 990 | f = td->files[td->next_file]; |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 991 | |
| 992 | td->next_file++; |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 993 | if (td->next_file >= td->o.nr_files) |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 994 | td->next_file = 0; |
| 995 | |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 996 | 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] | 997 | if (fio_file_done(f)) { |
Jens Axboe | d5ed68e | 2007-03-28 09:33:43 +0200 | [diff] [blame] | 998 | f = NULL; |
Jens Axboe | 059e63c | 2007-03-27 20:34:47 +0200 | [diff] [blame] | 999 | continue; |
Jens Axboe | d5ed68e | 2007-03-28 09:33:43 +0200 | [diff] [blame] | 1000 | } |
Jens Axboe | 059e63c | 2007-03-27 20:34:47 +0200 | [diff] [blame] | 1001 | |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 1002 | if (!fio_file_open(f)) { |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 1003 | int err; |
| 1004 | |
| 1005 | err = td_io_open_file(td, f); |
Jens Axboe | b5696bf | 2009-03-04 16:03:49 +0100 | [diff] [blame] | 1006 | if (err) { |
| 1007 | dprint(FD_FILE, "error %d on open of %s\n", |
| 1008 | err, f->file_name); |
Jens Axboe | 87c27b4 | 2009-05-20 10:45:12 +0200 | [diff] [blame] | 1009 | f = NULL; |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 1010 | continue; |
Jens Axboe | b5696bf | 2009-03-04 16:03:49 +0100 | [diff] [blame] | 1011 | } |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 1012 | opened = 1; |
| 1013 | } |
| 1014 | |
Jens Axboe | 0b9d69e | 2009-09-11 22:29:54 +0200 | [diff] [blame] | 1015 | dprint(FD_FILE, "goodf=%x, badf=%x, ff=%x\n", goodf, badf, |
| 1016 | f->flags); |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 1017 | if ((!goodf || (f->flags & goodf)) && !(f->flags & badf)) |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 1018 | break; |
| 1019 | |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 1020 | if (opened) |
| 1021 | td_io_close_file(td, f); |
| 1022 | |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 1023 | f = NULL; |
| 1024 | } while (td->next_file != old_next_file); |
| 1025 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1026 | dprint(FD_FILE, "get_next_file_rr: %p\n", f); |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 1027 | return f; |
| 1028 | } |
| 1029 | |
Jens Axboe | 7eb3657 | 2010-03-08 13:58:49 +0100 | [diff] [blame] | 1030 | static struct fio_file *__get_next_file(struct thread_data *td) |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 1031 | { |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 1032 | struct fio_file *f; |
| 1033 | |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 1034 | assert(td->o.nr_files <= td->files_index); |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 1035 | |
Jens Axboe | b5696bf | 2009-03-04 16:03:49 +0100 | [diff] [blame] | 1036 | if (td->nr_done_files >= td->o.nr_files) { |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 1037 | dprint(FD_FILE, "get_next_file: nr_open=%d, nr_done=%d," |
| 1038 | " nr_files=%d\n", td->nr_open_files, |
| 1039 | td->nr_done_files, |
| 1040 | td->o.nr_files); |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 1041 | return NULL; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1042 | } |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 1043 | |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 1044 | f = td->file_service_file; |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 1045 | if (f && fio_file_open(f) && !fio_file_closing(f)) { |
Jens Axboe | a086c25 | 2009-03-04 08:27:37 +0100 | [diff] [blame] | 1046 | if (td->o.file_service_type == FIO_FSERVICE_SEQ) |
| 1047 | goto out; |
| 1048 | if (td->file_service_left--) |
| 1049 | goto out; |
| 1050 | } |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 1051 | |
Jens Axboe | a086c25 | 2009-03-04 08:27:37 +0100 | [diff] [blame] | 1052 | if (td->o.file_service_type == FIO_FSERVICE_RR || |
| 1053 | td->o.file_service_type == FIO_FSERVICE_SEQ) |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 1054 | f = get_next_file_rr(td, FIO_FILE_open, FIO_FILE_closing); |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 1055 | else |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 1056 | f = get_next_file_rand(td, FIO_FILE_open, FIO_FILE_closing); |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 1057 | |
| 1058 | td->file_service_file = f; |
| 1059 | td->file_service_left = td->file_service_nr - 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1060 | out: |
Jens Axboe | 683023e | 2009-03-04 08:41:31 +0100 | [diff] [blame] | 1061 | dprint(FD_FILE, "get_next_file: %p [%s]\n", f, f->file_name); |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 1062 | return f; |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 1063 | } |
| 1064 | |
Jens Axboe | 7eb3657 | 2010-03-08 13:58:49 +0100 | [diff] [blame] | 1065 | static struct fio_file *get_next_file(struct thread_data *td) |
| 1066 | { |
| 1067 | struct prof_io_ops *ops = &td->prof_io_ops; |
| 1068 | |
| 1069 | if (ops->get_next_file) |
| 1070 | return ops->get_next_file(td); |
| 1071 | |
| 1072 | return __get_next_file(td); |
| 1073 | } |
| 1074 | |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1075 | static int set_io_u_file(struct thread_data *td, struct io_u *io_u) |
| 1076 | { |
| 1077 | struct fio_file *f; |
| 1078 | |
| 1079 | do { |
| 1080 | f = get_next_file(td); |
| 1081 | if (!f) |
| 1082 | return 1; |
| 1083 | |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1084 | io_u->file = f; |
| 1085 | get_file(f); |
| 1086 | |
| 1087 | if (!fill_io_u(td, io_u)) |
| 1088 | break; |
| 1089 | |
Jens Axboe | b5696bf | 2009-03-04 16:03:49 +0100 | [diff] [blame] | 1090 | put_file_log(td, f); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1091 | td_io_close_file(td, f); |
Jens Axboe | b5696bf | 2009-03-04 16:03:49 +0100 | [diff] [blame] | 1092 | io_u->file = NULL; |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 1093 | fio_file_set_done(f); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1094 | td->nr_done_files++; |
Jens Axboe | 0b9d69e | 2009-09-11 22:29:54 +0200 | [diff] [blame] | 1095 | dprint(FD_FILE, "%s: is done (%d of %d)\n", f->file_name, |
| 1096 | td->nr_done_files, td->o.nr_files); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1097 | } while (1); |
| 1098 | |
| 1099 | return 0; |
| 1100 | } |
| 1101 | |
| 1102 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1103 | struct io_u *__get_io_u(struct thread_data *td) |
| 1104 | { |
| 1105 | struct io_u *io_u = NULL; |
| 1106 | |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 1107 | td_io_u_lock(td); |
| 1108 | |
| 1109 | again: |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 1110 | if (!flist_empty(&td->io_u_requeues)) |
| 1111 | io_u = flist_entry(td->io_u_requeues.next, struct io_u, list); |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 1112 | else if (!queue_full(td)) { |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 1113 | io_u = flist_entry(td->io_u_freelist.next, struct io_u, list); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1114 | |
Jens Axboe | 6040dab | 2006-10-24 19:38:15 +0200 | [diff] [blame] | 1115 | io_u->buflen = 0; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1116 | io_u->resid = 0; |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 1117 | io_u->file = NULL; |
Jens Axboe | d7762cf | 2007-02-23 12:34:57 +0100 | [diff] [blame] | 1118 | io_u->end_io = NULL; |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 1119 | } |
| 1120 | |
| 1121 | if (io_u) { |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 1122 | assert(io_u->flags & IO_U_F_FREE); |
Jens Axboe | 2ecc1b5 | 2009-11-04 20:58:09 +0100 | [diff] [blame] | 1123 | io_u->flags &= ~(IO_U_F_FREE | IO_U_F_FREE_DEF); |
Jens Axboe | 1ef2b6b | 2010-10-08 15:07:01 +0200 | [diff] [blame] | 1124 | io_u->flags &= ~(IO_U_F_TRIMMED | IO_U_F_BARRIER); |
Jens Axboe | 82af2a7 | 2012-03-13 13:45:58 +0100 | [diff] [blame] | 1125 | io_u->flags &= ~IO_U_F_VER_LIST; |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 1126 | |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 1127 | io_u->error = 0; |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 1128 | flist_del(&io_u->list); |
Bruce Cran | 94c6372 | 2012-10-10 08:15:58 -0600 | [diff] [blame] | 1129 | flist_add_tail(&io_u->list, &td->io_u_busylist); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1130 | td->cur_depth++; |
Radha Ramachandran | 0c41214 | 2009-11-03 21:45:31 +0100 | [diff] [blame] | 1131 | io_u->flags |= IO_U_F_IN_CUR_DEPTH; |
Jens Axboe | 1dec3e0 | 2010-03-19 10:33:39 +0100 | [diff] [blame] | 1132 | } else if (td->o.verify_async) { |
| 1133 | /* |
| 1134 | * We ran out, wait for async verify threads to finish and |
| 1135 | * return one |
| 1136 | */ |
| 1137 | pthread_cond_wait(&td->free_cond, &td->io_u_lock); |
| 1138 | goto again; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1139 | } |
| 1140 | |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 1141 | td_io_u_unlock(td); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1142 | return io_u; |
| 1143 | } |
| 1144 | |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1145 | 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] | 1146 | { |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1147 | if (td->o.trim_backlog && td->trim_entries) { |
| 1148 | int get_trim = 0; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1149 | |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1150 | if (td->trim_batch) { |
| 1151 | td->trim_batch--; |
| 1152 | get_trim = 1; |
| 1153 | } else if (!(td->io_hist_len % td->o.trim_backlog) && |
| 1154 | td->last_ddir != DDIR_READ) { |
| 1155 | td->trim_batch = td->o.trim_batch; |
| 1156 | if (!td->trim_batch) |
| 1157 | td->trim_batch = td->o.trim_backlog; |
| 1158 | get_trim = 1; |
| 1159 | } |
| 1160 | |
| 1161 | if (get_trim && !get_next_trim(td, io_u)) |
| 1162 | return 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1163 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1164 | |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1165 | return 0; |
| 1166 | } |
| 1167 | |
| 1168 | static int check_get_verify(struct thread_data *td, struct io_u *io_u) |
| 1169 | { |
Jens Axboe | 9e14418 | 2010-06-15 14:25:36 +0200 | [diff] [blame] | 1170 | if (td->o.verify_backlog && td->io_hist_len) { |
| 1171 | int get_verify = 0; |
| 1172 | |
Jens Axboe | d1ece0c | 2012-03-07 09:32:58 +0100 | [diff] [blame] | 1173 | if (td->verify_batch) |
Jens Axboe | 9e14418 | 2010-06-15 14:25:36 +0200 | [diff] [blame] | 1174 | get_verify = 1; |
Jens Axboe | d1ece0c | 2012-03-07 09:32:58 +0100 | [diff] [blame] | 1175 | else if (!(td->io_hist_len % td->o.verify_backlog) && |
Jens Axboe | 9e14418 | 2010-06-15 14:25:36 +0200 | [diff] [blame] | 1176 | td->last_ddir != DDIR_READ) { |
| 1177 | td->verify_batch = td->o.verify_batch; |
Jens Axboe | f8a75c9 | 2010-06-15 14:27:28 +0200 | [diff] [blame] | 1178 | if (!td->verify_batch) |
| 1179 | td->verify_batch = td->o.verify_backlog; |
Jens Axboe | 9e14418 | 2010-06-15 14:25:36 +0200 | [diff] [blame] | 1180 | get_verify = 1; |
| 1181 | } |
| 1182 | |
Jens Axboe | d1ece0c | 2012-03-07 09:32:58 +0100 | [diff] [blame] | 1183 | if (get_verify && !get_next_verify(td, io_u)) { |
| 1184 | td->verify_batch--; |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1185 | return 1; |
Jens Axboe | d1ece0c | 2012-03-07 09:32:58 +0100 | [diff] [blame] | 1186 | } |
Jens Axboe | 9e14418 | 2010-06-15 14:25:36 +0200 | [diff] [blame] | 1187 | } |
| 1188 | |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1189 | return 0; |
| 1190 | } |
| 1191 | |
| 1192 | /* |
Jens Axboe | de78976 | 2011-09-16 22:11:23 +0200 | [diff] [blame] | 1193 | * Fill offset and start time into the buffer content, to prevent too |
Jens Axboe | 23f394d | 2011-09-16 22:45:27 +0200 | [diff] [blame] | 1194 | * easy compressible data for simple de-dupe attempts. Do this for every |
| 1195 | * 512b block in the range, since that should be the smallest block size |
| 1196 | * we can expect from a device. |
Jens Axboe | de78976 | 2011-09-16 22:11:23 +0200 | [diff] [blame] | 1197 | */ |
| 1198 | static void small_content_scramble(struct io_u *io_u) |
| 1199 | { |
Jens Axboe | 23f394d | 2011-09-16 22:45:27 +0200 | [diff] [blame] | 1200 | unsigned int i, nr_blocks = io_u->buflen / 512; |
Jens Axboe | fad82f7 | 2011-09-19 11:33:30 +0200 | [diff] [blame] | 1201 | unsigned long long boffset; |
Jens Axboe | 23f394d | 2011-09-16 22:45:27 +0200 | [diff] [blame] | 1202 | unsigned int offset; |
| 1203 | void *p, *end; |
Jens Axboe | de78976 | 2011-09-16 22:11:23 +0200 | [diff] [blame] | 1204 | |
Jens Axboe | 23f394d | 2011-09-16 22:45:27 +0200 | [diff] [blame] | 1205 | if (!nr_blocks) |
| 1206 | return; |
| 1207 | |
| 1208 | p = io_u->xfer_buf; |
Jens Axboe | fba76ee | 2011-09-27 14:27:48 -0600 | [diff] [blame] | 1209 | boffset = io_u->offset; |
Jens Axboe | 81f0366 | 2012-02-02 09:20:09 +0100 | [diff] [blame] | 1210 | io_u->buf_filled_len = 0; |
Jens Axboe | fad82f7 | 2011-09-19 11:33:30 +0200 | [diff] [blame] | 1211 | |
Jens Axboe | 23f394d | 2011-09-16 22:45:27 +0200 | [diff] [blame] | 1212 | for (i = 0; i < nr_blocks; i++) { |
| 1213 | /* |
| 1214 | * Fill the byte offset into a "random" start offset of |
| 1215 | * the buffer, given by the product of the usec time |
| 1216 | * and the actual offset. |
| 1217 | */ |
Jens Axboe | fad82f7 | 2011-09-19 11:33:30 +0200 | [diff] [blame] | 1218 | offset = (io_u->start_time.tv_usec ^ boffset) & 511; |
Jens Axboe | fba76ee | 2011-09-27 14:27:48 -0600 | [diff] [blame] | 1219 | offset &= ~(sizeof(unsigned long long) - 1); |
Jens Axboe | 23f394d | 2011-09-16 22:45:27 +0200 | [diff] [blame] | 1220 | if (offset >= 512 - sizeof(unsigned long long)) |
| 1221 | offset -= sizeof(unsigned long long); |
Jens Axboe | fba76ee | 2011-09-27 14:27:48 -0600 | [diff] [blame] | 1222 | memcpy(p + offset, &boffset, sizeof(boffset)); |
Jens Axboe | 23f394d | 2011-09-16 22:45:27 +0200 | [diff] [blame] | 1223 | |
| 1224 | end = p + 512 - sizeof(io_u->start_time); |
| 1225 | memcpy(end, &io_u->start_time, sizeof(io_u->start_time)); |
| 1226 | p += 512; |
Jens Axboe | fad82f7 | 2011-09-19 11:33:30 +0200 | [diff] [blame] | 1227 | boffset += 512; |
Jens Axboe | 23f394d | 2011-09-16 22:45:27 +0200 | [diff] [blame] | 1228 | } |
Jens Axboe | de78976 | 2011-09-16 22:11:23 +0200 | [diff] [blame] | 1229 | } |
| 1230 | |
| 1231 | /* |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1232 | * Return an io_u to be processed. Gets a buflen and offset, sets direction, |
| 1233 | * etc. The returned io_u is fully ready to be prepped and submitted. |
| 1234 | */ |
| 1235 | struct io_u *get_io_u(struct thread_data *td) |
| 1236 | { |
| 1237 | struct fio_file *f; |
| 1238 | struct io_u *io_u; |
Jens Axboe | de78976 | 2011-09-16 22:11:23 +0200 | [diff] [blame] | 1239 | int do_scramble = 0; |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1240 | |
| 1241 | io_u = __get_io_u(td); |
| 1242 | if (!io_u) { |
| 1243 | dprint(FD_IO, "__get_io_u failed\n"); |
| 1244 | return NULL; |
| 1245 | } |
| 1246 | |
| 1247 | if (check_get_verify(td, io_u)) |
| 1248 | goto out; |
| 1249 | if (check_get_trim(td, io_u)) |
| 1250 | goto out; |
| 1251 | |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 1252 | /* |
| 1253 | * from a requeue, io_u already setup |
| 1254 | */ |
| 1255 | if (io_u->file) |
Jens Axboe | 77f392b | 2007-02-19 20:13:09 +0100 | [diff] [blame] | 1256 | goto out; |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 1257 | |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1258 | /* |
| 1259 | * If using an iolog, grab next piece if any available. |
| 1260 | */ |
| 1261 | if (td->o.read_iolog_file) { |
| 1262 | if (read_iolog_get(td, io_u)) |
| 1263 | goto err_put; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1264 | } else if (set_io_u_file(td, io_u)) { |
| 1265 | dprint(FD_IO, "io_u %p, setting file failed\n", io_u); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1266 | goto err_put; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1267 | } |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 1268 | |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1269 | f = io_u->file; |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 1270 | assert(fio_file_open(f)); |
Jens Axboe | 97af62c | 2007-05-22 11:12:13 +0200 | [diff] [blame] | 1271 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 1272 | if (ddir_rw(io_u->ddir)) { |
Jens Axboe | d0656a9 | 2008-02-01 18:33:23 +0100 | [diff] [blame] | 1273 | if (!io_u->buflen && !(td->io_ops->flags & FIO_NOIO)) { |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1274 | 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] | 1275 | goto err_put; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1276 | } |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 1277 | |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 1278 | f->last_start = io_u->offset; |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 1279 | f->last_pos = io_u->offset + io_u->buflen; |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 1280 | |
Jens Axboe | fd68418 | 2011-09-19 09:24:44 +0200 | [diff] [blame] | 1281 | if (io_u->ddir == DDIR_WRITE) { |
Jens Axboe | 629f1d7 | 2012-03-09 19:02:01 +0100 | [diff] [blame] | 1282 | if (td->o.refill_buffers) { |
Jens Axboe | 9c42684 | 2012-03-02 21:02:12 +0100 | [diff] [blame] | 1283 | io_u_fill_buffer(td, io_u, |
| 1284 | io_u->xfer_buflen, io_u->xfer_buflen); |
| 1285 | } else if (td->o.scramble_buffers) |
Jens Axboe | fd68418 | 2011-09-19 09:24:44 +0200 | [diff] [blame] | 1286 | do_scramble = 1; |
Jens Axboe | 629f1d7 | 2012-03-09 19:02:01 +0100 | [diff] [blame] | 1287 | if (td->o.verify != VERIFY_NONE) { |
| 1288 | populate_verify_io_u(td, io_u); |
| 1289 | do_scramble = 0; |
| 1290 | } |
Jens Axboe | fd68418 | 2011-09-19 09:24:44 +0200 | [diff] [blame] | 1291 | } else if (io_u->ddir == DDIR_READ) { |
Radha Ramachandran | cbe8d75 | 2010-07-14 08:36:07 +0200 | [diff] [blame] | 1292 | /* |
| 1293 | * Reset the buf_filled parameters so next time if the |
| 1294 | * buffer is used for writes it is refilled. |
| 1295 | */ |
Radha Ramachandran | cbe8d75 | 2010-07-14 08:36:07 +0200 | [diff] [blame] | 1296 | io_u->buf_filled_len = 0; |
| 1297 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1298 | } |
| 1299 | |
Jens Axboe | 165faf1 | 2007-02-07 11:30:37 +0100 | [diff] [blame] | 1300 | /* |
| 1301 | * Set io data pointers. |
| 1302 | */ |
Jens Axboe | cec6b55 | 2007-02-06 20:15:38 +0100 | [diff] [blame] | 1303 | io_u->xfer_buf = io_u->buf; |
| 1304 | io_u->xfer_buflen = io_u->buflen; |
Jens Axboe | 5973caf | 2008-05-21 19:52:35 +0200 | [diff] [blame] | 1305 | |
Jens Axboe | 6ac7a33 | 2008-03-01 15:22:32 +0100 | [diff] [blame] | 1306 | out: |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1307 | assert(io_u->file); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1308 | if (!td_io_prep(td, io_u)) { |
Jens Axboe | 993bf48 | 2008-11-14 13:04:53 +0100 | [diff] [blame] | 1309 | if (!td->o.disable_slat) |
| 1310 | fio_gettime(&io_u->start_time, NULL); |
Jens Axboe | de78976 | 2011-09-16 22:11:23 +0200 | [diff] [blame] | 1311 | if (do_scramble) |
| 1312 | small_content_scramble(io_u); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1313 | return io_u; |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 1314 | } |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1315 | err_put: |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1316 | dprint(FD_IO, "get_io_u failed\n"); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1317 | put_io_u(td, io_u); |
| 1318 | return NULL; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1319 | } |
| 1320 | |
Jens Axboe | 5451792 | 2007-03-05 10:06:06 +0100 | [diff] [blame] | 1321 | void io_u_log_error(struct thread_data *td, struct io_u *io_u) |
| 1322 | { |
Dmitry Monakhov | 8b28bd4 | 2012-09-23 15:46:09 +0400 | [diff] [blame] | 1323 | 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] | 1324 | const char *msg[] = { "read", "write", "sync", "datasync", |
| 1325 | "sync_file_range", "wait", "trim" }; |
| 1326 | |
Dmitry Monakhov | 8b28bd4 | 2012-09-23 15:46:09 +0400 | [diff] [blame] | 1327 | if (td_non_fatal_error(td, eb, io_u->error) && !td->o.error_dump) |
| 1328 | return; |
Jens Axboe | 5451792 | 2007-03-05 10:06:06 +0100 | [diff] [blame] | 1329 | |
| 1330 | log_err("fio: io_u error"); |
| 1331 | |
| 1332 | if (io_u->file) |
| 1333 | log_err(" on file %s", io_u->file->file_name); |
| 1334 | |
| 1335 | log_err(": %s\n", strerror(io_u->error)); |
| 1336 | |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 1337 | log_err(" %s offset=%llu, buflen=%lu\n", msg[io_u->ddir], |
| 1338 | io_u->offset, io_u->xfer_buflen); |
Jens Axboe | 5451792 | 2007-03-05 10:06:06 +0100 | [diff] [blame] | 1339 | |
| 1340 | if (!td->error) |
| 1341 | td_verror(td, io_u->error, "io_u error"); |
| 1342 | } |
| 1343 | |
Jens Axboe | c8eeb9d | 2011-10-05 14:02:22 +0200 | [diff] [blame] | 1344 | static void account_io_completion(struct thread_data *td, struct io_u *io_u, |
| 1345 | struct io_completion_data *icd, |
| 1346 | const enum fio_ddir idx, unsigned int bytes) |
| 1347 | { |
| 1348 | unsigned long uninitialized_var(lusec); |
| 1349 | |
Jens Axboe | c8eeb9d | 2011-10-05 14:02:22 +0200 | [diff] [blame] | 1350 | if (!td->o.disable_clat || !td->o.disable_bw) |
| 1351 | lusec = utime_since(&io_u->issue_time, &icd->time); |
| 1352 | |
| 1353 | if (!td->o.disable_lat) { |
| 1354 | unsigned long tusec; |
| 1355 | |
| 1356 | tusec = utime_since(&io_u->start_time, &icd->time); |
| 1357 | add_lat_sample(td, idx, tusec, bytes); |
Jens Axboe | 1550153 | 2012-10-24 16:37:45 +0200 | [diff] [blame] | 1358 | |
| 1359 | if (td->o.max_latency && tusec > td->o.max_latency) { |
| 1360 | if (!td->error) |
| 1361 | log_err("fio: latency of %lu usec exceeds specified max (%u usec)\n", tusec, td->o.max_latency); |
Jens Axboe | c5b3adc | 2012-11-08 21:38:35 +0100 | [diff] [blame] | 1362 | td_verror(td, ETIMEDOUT, "max latency exceeded"); |
| 1363 | icd->error = ETIMEDOUT; |
Jens Axboe | 1550153 | 2012-10-24 16:37:45 +0200 | [diff] [blame] | 1364 | } |
Jens Axboe | c8eeb9d | 2011-10-05 14:02:22 +0200 | [diff] [blame] | 1365 | } |
| 1366 | |
| 1367 | if (!td->o.disable_clat) { |
| 1368 | add_clat_sample(td, idx, lusec, bytes); |
| 1369 | io_u_mark_latency(td, lusec); |
| 1370 | } |
| 1371 | |
| 1372 | if (!td->o.disable_bw) |
| 1373 | add_bw_sample(td, idx, bytes, &icd->time); |
| 1374 | |
| 1375 | add_iops_sample(td, idx, &icd->time); |
| 1376 | } |
| 1377 | |
Steven Lang | 1b8dbf2 | 2011-11-09 13:48:01 +0100 | [diff] [blame] | 1378 | static long long usec_for_io(struct thread_data *td, enum fio_ddir ddir) |
| 1379 | { |
| 1380 | unsigned long long secs, remainder, bps, bytes; |
| 1381 | bytes = td->this_io_bytes[ddir]; |
| 1382 | bps = td->rate_bps[ddir]; |
| 1383 | secs = bytes / bps; |
| 1384 | remainder = bytes % bps; |
| 1385 | return remainder * 1000000 / bps + secs * 1000000; |
| 1386 | } |
| 1387 | |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1388 | static void io_completed(struct thread_data *td, struct io_u *io_u, |
| 1389 | struct io_completion_data *icd) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1390 | { |
Jens Axboe | dbad30b | 2008-12-05 13:17:16 +0100 | [diff] [blame] | 1391 | /* |
| 1392 | * Older gcc's are too dumb to realize that usec is always used |
| 1393 | * initialized, silence that warning. |
| 1394 | */ |
| 1395 | unsigned long uninitialized_var(usec); |
Jens Axboe | 44f2969 | 2010-03-09 20:09:44 +0100 | [diff] [blame] | 1396 | struct fio_file *f; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1397 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1398 | dprint_io_u(io_u, "io complete"); |
| 1399 | |
Jens Axboe | 2ecc1b5 | 2009-11-04 20:58:09 +0100 | [diff] [blame] | 1400 | td_io_u_lock(td); |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 1401 | assert(io_u->flags & IO_U_F_FLIGHT); |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 1402 | io_u->flags &= ~(IO_U_F_FLIGHT | IO_U_F_BUSY_OK); |
Jens Axboe | 2ecc1b5 | 2009-11-04 20:58:09 +0100 | [diff] [blame] | 1403 | td_io_u_unlock(td); |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 1404 | |
Jens Axboe | 5f9099e | 2009-06-16 22:40:26 +0200 | [diff] [blame] | 1405 | if (ddir_sync(io_u->ddir)) { |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 1406 | td->last_was_sync = 1; |
Jens Axboe | 44f2969 | 2010-03-09 20:09:44 +0100 | [diff] [blame] | 1407 | f = io_u->file; |
| 1408 | if (f) { |
| 1409 | f->first_write = -1ULL; |
| 1410 | f->last_write = -1ULL; |
| 1411 | } |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 1412 | return; |
| 1413 | } |
| 1414 | |
| 1415 | td->last_was_sync = 0; |
Jens Axboe | 9e14418 | 2010-06-15 14:25:36 +0200 | [diff] [blame] | 1416 | td->last_ddir = io_u->ddir; |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 1417 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 1418 | if (!io_u->error && ddir_rw(io_u->ddir)) { |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1419 | unsigned int bytes = io_u->buflen - io_u->resid; |
Jens Axboe | 1e97cce | 2006-12-05 11:44:16 +0100 | [diff] [blame] | 1420 | const enum fio_ddir idx = io_u->ddir; |
Radha Ramachandran | ba3e4e0 | 2009-12-09 22:31:44 +0100 | [diff] [blame] | 1421 | const enum fio_ddir odx = io_u->ddir ^ 1; |
Jens Axboe | b29ee5b | 2008-09-11 10:17:26 +0200 | [diff] [blame] | 1422 | int ret; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1423 | |
Jens Axboe | b29ee5b | 2008-09-11 10:17:26 +0200 | [diff] [blame] | 1424 | td->io_blocks[idx]++; |
Jens Axboe | c8eeb9d | 2011-10-05 14:02:22 +0200 | [diff] [blame] | 1425 | td->this_io_blocks[idx]++; |
Jens Axboe | b29ee5b | 2008-09-11 10:17:26 +0200 | [diff] [blame] | 1426 | td->io_bytes[idx] += bytes; |
webee | ae2fafc | 2012-03-23 13:41:41 +0100 | [diff] [blame] | 1427 | |
| 1428 | if (!(io_u->flags & IO_U_F_VER_LIST)) |
| 1429 | td->this_io_bytes[idx] += bytes; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1430 | |
Jens Axboe | 44f2969 | 2010-03-09 20:09:44 +0100 | [diff] [blame] | 1431 | if (idx == DDIR_WRITE) { |
| 1432 | f = io_u->file; |
| 1433 | if (f) { |
| 1434 | if (f->first_write == -1ULL || |
| 1435 | io_u->offset < f->first_write) |
| 1436 | f->first_write = io_u->offset; |
| 1437 | if (f->last_write == -1ULL || |
| 1438 | ((io_u->offset + bytes) > f->last_write)) |
| 1439 | f->last_write = io_u->offset + bytes; |
| 1440 | } |
| 1441 | } |
| 1442 | |
Steven Lang | 6b1190f | 2012-02-07 09:42:59 +0100 | [diff] [blame] | 1443 | if (ramp_time_over(td) && (td->runstate == TD_RUNNING || |
| 1444 | td->runstate == TD_VERIFYING)) { |
Jens Axboe | c8eeb9d | 2011-10-05 14:02:22 +0200 | [diff] [blame] | 1445 | account_io_completion(td, io_u, icd, idx, bytes); |
Jens Axboe | 40e1a6f | 2009-06-11 10:55:39 +0200 | [diff] [blame] | 1446 | |
Jens Axboe | b23b6a2 | 2009-06-11 22:06:23 +0200 | [diff] [blame] | 1447 | if (__should_check_rate(td, idx)) { |
Radha Ramachandran | ba3e4e0 | 2009-12-09 22:31:44 +0100 | [diff] [blame] | 1448 | td->rate_pending_usleep[idx] = |
Steven Lang | 1b8dbf2 | 2011-11-09 13:48:01 +0100 | [diff] [blame] | 1449 | (usec_for_io(td, idx) - |
Radha Ramachandran | ba3e4e0 | 2009-12-09 22:31:44 +0100 | [diff] [blame] | 1450 | utime_since_now(&td->start)); |
Jens Axboe | b23b6a2 | 2009-06-11 22:06:23 +0200 | [diff] [blame] | 1451 | } |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 1452 | if (idx != DDIR_TRIM && __should_check_rate(td, odx)) |
Radha Ramachandran | ba3e4e0 | 2009-12-09 22:31:44 +0100 | [diff] [blame] | 1453 | td->rate_pending_usleep[odx] = |
Steven Lang | 1b8dbf2 | 2011-11-09 13:48:01 +0100 | [diff] [blame] | 1454 | (usec_for_io(td, odx) - |
Radha Ramachandran | ba3e4e0 | 2009-12-09 22:31:44 +0100 | [diff] [blame] | 1455 | utime_since_now(&td->start)); |
Jens Axboe | 721938a | 2008-09-10 09:46:16 +0200 | [diff] [blame] | 1456 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1457 | |
Jens Axboe | 660a1cb | 2007-04-17 15:37:47 +0200 | [diff] [blame] | 1458 | if (td_write(td) && idx == DDIR_WRITE && |
Shawn Lewis | 8670579 | 2007-11-21 09:35:41 +0100 | [diff] [blame] | 1459 | td->o.do_verify && |
Jens Axboe | 4112840 | 2007-03-27 08:32:48 +0200 | [diff] [blame] | 1460 | td->o.verify != VERIFY_NONE) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1461 | log_io_piece(td, io_u); |
| 1462 | |
Jens Axboe | b29ee5b | 2008-09-11 10:17:26 +0200 | [diff] [blame] | 1463 | icd->bytes_done[idx] += bytes; |
Jens Axboe | 3af6ef3 | 2007-02-18 06:57:43 +0100 | [diff] [blame] | 1464 | |
Jens Axboe | d7762cf | 2007-02-23 12:34:57 +0100 | [diff] [blame] | 1465 | if (io_u->end_io) { |
Jens Axboe | 36690c9 | 2007-03-26 10:23:34 +0200 | [diff] [blame] | 1466 | ret = io_u->end_io(td, io_u); |
Jens Axboe | 3af6ef3 | 2007-02-18 06:57:43 +0100 | [diff] [blame] | 1467 | if (ret && !icd->error) |
| 1468 | icd->error = ret; |
| 1469 | } |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 1470 | } else if (io_u->error) { |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1471 | icd->error = io_u->error; |
Jens Axboe | 5451792 | 2007-03-05 10:06:06 +0100 | [diff] [blame] | 1472 | io_u_log_error(td, io_u); |
| 1473 | } |
Dmitry Monakhov | 8b28bd4 | 2012-09-23 15:46:09 +0400 | [diff] [blame] | 1474 | if (icd->error) { |
| 1475 | enum error_type_bit eb = td_error_type(io_u->ddir, icd->error); |
| 1476 | if (!td_non_fatal_error(td, eb, icd->error)) |
| 1477 | return; |
Radha Ramachandran | f2bba18 | 2009-06-15 08:40:16 +0200 | [diff] [blame] | 1478 | /* |
| 1479 | * If there is a non_fatal error, then add to the error count |
| 1480 | * and clear all the errors. |
| 1481 | */ |
| 1482 | update_error_count(td, icd->error); |
| 1483 | td_clear_error(td); |
| 1484 | icd->error = 0; |
| 1485 | io_u->error = 0; |
| 1486 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1487 | } |
| 1488 | |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1489 | static void init_icd(struct thread_data *td, struct io_completion_data *icd, |
| 1490 | int nr) |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 1491 | { |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 1492 | int ddir; |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1493 | if (!td->o.disable_clat || !td->o.disable_bw) |
| 1494 | fio_gettime(&icd->time, NULL); |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 1495 | |
Jens Axboe | 3af6ef3 | 2007-02-18 06:57:43 +0100 | [diff] [blame] | 1496 | icd->nr = nr; |
| 1497 | |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 1498 | icd->error = 0; |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 1499 | for (ddir = DDIR_READ; ddir < DDIR_RWDIR_CNT; ddir++) |
| 1500 | icd->bytes_done[ddir] = 0; |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 1501 | } |
| 1502 | |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1503 | static void ios_completed(struct thread_data *td, |
| 1504 | struct io_completion_data *icd) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1505 | { |
| 1506 | struct io_u *io_u; |
| 1507 | int i; |
| 1508 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1509 | for (i = 0; i < icd->nr; i++) { |
| 1510 | io_u = td->io_ops->event(td, i); |
| 1511 | |
| 1512 | io_completed(td, io_u, icd); |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 1513 | |
| 1514 | if (!(io_u->flags & IO_U_F_FREE_DEF)) |
| 1515 | put_io_u(td, io_u); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1516 | } |
| 1517 | } |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1518 | |
Jens Axboe | e7e6cfb | 2007-02-20 10:58:34 +0100 | [diff] [blame] | 1519 | /* |
| 1520 | * Complete a single io_u for the sync engines. |
| 1521 | */ |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1522 | int io_u_sync_complete(struct thread_data *td, struct io_u *io_u, |
| 1523 | unsigned long *bytes) |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1524 | { |
| 1525 | struct io_completion_data icd; |
| 1526 | |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1527 | init_icd(td, &icd, 1); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1528 | io_completed(td, io_u, &icd); |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 1529 | |
| 1530 | if (!(io_u->flags & IO_U_F_FREE_DEF)) |
| 1531 | put_io_u(td, io_u); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1532 | |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1533 | if (icd.error) { |
| 1534 | td_verror(td, icd.error, "io_u_sync_complete"); |
| 1535 | return -1; |
| 1536 | } |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1537 | |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1538 | if (bytes) { |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 1539 | int ddir; |
| 1540 | |
| 1541 | for (ddir = DDIR_READ; ddir < DDIR_RWDIR_CNT; ddir++) |
| 1542 | bytes[ddir] += icd.bytes_done[ddir]; |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1543 | } |
| 1544 | |
| 1545 | return 0; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1546 | } |
| 1547 | |
Jens Axboe | e7e6cfb | 2007-02-20 10:58:34 +0100 | [diff] [blame] | 1548 | /* |
| 1549 | * Called to complete min_events number of io for the async engines. |
| 1550 | */ |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1551 | int io_u_queued_complete(struct thread_data *td, int min_evts, |
| 1552 | unsigned long *bytes) |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1553 | { |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1554 | struct io_completion_data icd; |
Jens Axboe | 00de55e | 2007-02-20 10:45:57 +0100 | [diff] [blame] | 1555 | struct timespec *tvp = NULL; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1556 | int ret; |
Davide Libenzi | 4d06a33 | 2007-03-22 07:43:50 +0100 | [diff] [blame] | 1557 | struct timespec ts = { .tv_sec = 0, .tv_nsec = 0, }; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1558 | |
Jens Axboe | 4950421 | 2008-06-05 09:03:30 +0200 | [diff] [blame] | 1559 | dprint(FD_IO, "io_u_queued_completed: min=%d\n", min_evts); |
Jens Axboe | b271fe6 | 2008-02-04 10:49:41 +0100 | [diff] [blame] | 1560 | |
Jens Axboe | 4950421 | 2008-06-05 09:03:30 +0200 | [diff] [blame] | 1561 | if (!min_evts) |
Jens Axboe | 00de55e | 2007-02-20 10:45:57 +0100 | [diff] [blame] | 1562 | tvp = &ts; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1563 | |
Jens Axboe | 4950421 | 2008-06-05 09:03:30 +0200 | [diff] [blame] | 1564 | 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] | 1565 | if (ret < 0) { |
Jens Axboe | e1161c3 | 2007-02-22 19:36:48 +0100 | [diff] [blame] | 1566 | td_verror(td, -ret, "td_io_getevents"); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1567 | return ret; |
| 1568 | } else if (!ret) |
| 1569 | return ret; |
| 1570 | |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1571 | init_icd(td, &icd, ret); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1572 | ios_completed(td, &icd); |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1573 | if (icd.error) { |
| 1574 | td_verror(td, icd.error, "io_u_queued_complete"); |
| 1575 | return -1; |
| 1576 | } |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1577 | |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1578 | if (bytes) { |
Shaohua Li | 6eaf09d | 2012-09-14 08:49:43 +0200 | [diff] [blame] | 1579 | int ddir; |
| 1580 | |
| 1581 | for (ddir = DDIR_READ; ddir < DDIR_RWDIR_CNT; ddir++) |
| 1582 | bytes[ddir] += icd.bytes_done[ddir]; |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1583 | } |
| 1584 | |
| 1585 | return 0; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1586 | } |
Jens Axboe | 7e77dd0 | 2007-02-20 10:57:34 +0100 | [diff] [blame] | 1587 | |
| 1588 | /* |
| 1589 | * Call when io_u is really queued, to update the submission latency. |
| 1590 | */ |
| 1591 | void io_u_queued(struct thread_data *td, struct io_u *io_u) |
| 1592 | { |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1593 | if (!td->o.disable_slat) { |
| 1594 | unsigned long slat_time; |
Jens Axboe | 7e77dd0 | 2007-02-20 10:57:34 +0100 | [diff] [blame] | 1595 | |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1596 | slat_time = utime_since(&io_u->start_time, &io_u->issue_time); |
Jens Axboe | 29a90dd | 2009-06-10 06:57:47 +0200 | [diff] [blame] | 1597 | add_slat_sample(td, io_u->ddir, slat_time, io_u->xfer_buflen); |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1598 | } |
Jens Axboe | 7e77dd0 | 2007-02-20 10:57:34 +0100 | [diff] [blame] | 1599 | } |
Jens Axboe | 433afcb | 2007-02-22 10:39:01 +0100 | [diff] [blame] | 1600 | |
Jens Axboe | 5973caf | 2008-05-21 19:52:35 +0200 | [diff] [blame] | 1601 | /* |
| 1602 | * "randomly" fill the buffer contents |
| 1603 | */ |
| 1604 | void io_u_fill_buffer(struct thread_data *td, struct io_u *io_u, |
Jens Axboe | 9c42684 | 2012-03-02 21:02:12 +0100 | [diff] [blame] | 1605 | unsigned int min_write, unsigned int max_bs) |
Jens Axboe | 5973caf | 2008-05-21 19:52:35 +0200 | [diff] [blame] | 1606 | { |
Jens Axboe | e84b371 | 2011-01-16 08:32:08 -0700 | [diff] [blame] | 1607 | io_u->buf_filled_len = 0; |
| 1608 | |
Jens Axboe | 9c42684 | 2012-03-02 21:02:12 +0100 | [diff] [blame] | 1609 | if (!td->o.zero_buffers) { |
| 1610 | unsigned int perc = td->o.compress_percentage; |
| 1611 | |
| 1612 | if (perc) { |
Jens Axboe | f97a43a | 2012-03-09 19:06:24 +0100 | [diff] [blame] | 1613 | unsigned int seg = min_write; |
| 1614 | |
| 1615 | seg = min(min_write, td->o.compress_chunk); |
Jens Axboe | 9c42684 | 2012-03-02 21:02:12 +0100 | [diff] [blame] | 1616 | fill_random_buf_percentage(&td->buf_state, io_u->buf, |
Jens Axboe | f97a43a | 2012-03-09 19:06:24 +0100 | [diff] [blame] | 1617 | perc, seg, max_bs); |
Jens Axboe | 9c42684 | 2012-03-02 21:02:12 +0100 | [diff] [blame] | 1618 | } else |
| 1619 | fill_random_buf(&td->buf_state, io_u->buf, max_bs); |
| 1620 | } else |
Jens Axboe | 637ef8d | 2010-06-21 20:39:38 +0200 | [diff] [blame] | 1621 | memset(io_u->buf, 0, max_bs); |
Jens Axboe | 5973caf | 2008-05-21 19:52:35 +0200 | [diff] [blame] | 1622 | } |