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 */ |
| 18 | unsigned long bytes_done[2]; /* output */ |
| 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 | |
Jens Axboe | 2b7a01d | 2009-03-11 11:00:13 +0100 | [diff] [blame] | 116 | max_blocks = max_size / (unsigned long long) td->o.ba[ddir]; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 117 | if (!max_blocks) |
| 118 | return 0; |
| 119 | |
Jens Axboe | 67778e8 | 2008-05-15 09:20:08 +0200 | [diff] [blame] | 120 | return max_blocks; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 121 | } |
| 122 | |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 123 | /* |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 124 | * Return the next free block in the map. |
| 125 | */ |
| 126 | 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] | 127 | enum fio_ddir ddir, unsigned long long *b) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 128 | { |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 129 | unsigned long long block, min_bs = td->o.rw_min_bs, lastb; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 130 | int i; |
| 131 | |
Jens Axboe | 5e0baa7 | 2010-10-20 11:14:57 +0200 | [diff] [blame] | 132 | lastb = last_block(td, f, ddir); |
| 133 | if (!lastb) |
| 134 | return 1; |
| 135 | |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 136 | i = f->last_free_lookup; |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 137 | block = i * BLOCKS_PER_MAP; |
| 138 | while (block * min_bs < f->real_file_size && |
| 139 | block * min_bs < f->io_size) { |
| 140 | if (f->file_map[i] != -1UL) { |
| 141 | block += ffz(f->file_map[i]); |
| 142 | if (block > lastb) |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 143 | break; |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 144 | f->last_free_lookup = i; |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 145 | *b = block; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 146 | return 0; |
| 147 | } |
| 148 | |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 149 | block += BLOCKS_PER_MAP; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 150 | i++; |
| 151 | } |
| 152 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 153 | dprint(FD_IO, "failed finding a free block\n"); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 154 | return 1; |
| 155 | } |
| 156 | |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 157 | static int get_next_rand_offset(struct thread_data *td, struct fio_file *f, |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 158 | enum fio_ddir ddir, unsigned long long *b) |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 159 | { |
Jens Axboe | 5e0baa7 | 2010-10-20 11:14:57 +0200 | [diff] [blame] | 160 | unsigned long long r, lastb; |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 161 | int loops = 5; |
| 162 | |
Jens Axboe | 5e0baa7 | 2010-10-20 11:14:57 +0200 | [diff] [blame] | 163 | lastb = last_block(td, f, ddir); |
| 164 | if (!lastb) |
| 165 | return 1; |
| 166 | |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 167 | if (f->failed_rands >= 200) |
| 168 | goto ffz; |
| 169 | |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 170 | do { |
Jens Axboe | 2615cc4 | 2011-03-28 09:35:09 +0200 | [diff] [blame] | 171 | if (td->o.use_os_rand) { |
| 172 | r = os_random_long(&td->random_state); |
| 173 | *b = (lastb - 1) * (r / ((unsigned long long) OS_RAND_MAX + 1.0)); |
| 174 | } else { |
| 175 | r = __rand(&td->__random_state); |
| 176 | *b = (lastb - 1) * (r / ((unsigned long long) FRAND_MAX + 1.0)); |
| 177 | } |
| 178 | |
Jens Axboe | 84422ac | 2008-02-19 20:10:26 +0100 | [diff] [blame] | 179 | dprint(FD_RANDOM, "off rand %llu\n", r); |
Jens Axboe | 2615cc4 | 2011-03-28 09:35:09 +0200 | [diff] [blame] | 180 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 181 | |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 182 | /* |
| 183 | * if we are not maintaining a random map, we are done. |
| 184 | */ |
Jens Axboe | 303032a | 2008-03-26 10:11:10 +0100 | [diff] [blame] | 185 | if (!file_randommap(td, f)) |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 186 | goto ret_good; |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 187 | |
| 188 | /* |
Jens Axboe | 84422ac | 2008-02-19 20:10:26 +0100 | [diff] [blame] | 189 | * calculate map offset and check if it's free |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 190 | */ |
Jens Axboe | aec2de2 | 2008-04-24 12:44:42 +0200 | [diff] [blame] | 191 | if (random_map_free(f, *b)) |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 192 | goto ret_good; |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 193 | |
Jens Axboe | 84422ac | 2008-02-19 20:10:26 +0100 | [diff] [blame] | 194 | dprint(FD_RANDOM, "get_next_rand_offset: offset %llu busy\n", |
| 195 | *b); |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 196 | } while (--loops); |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 197 | |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 198 | if (!f->failed_rands++) |
| 199 | f->last_free_lookup = 0; |
| 200 | |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 201 | /* |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 202 | * we get here, if we didn't suceed in looking up a block. generate |
| 203 | * a random start offset into the filemap, and find the first free |
| 204 | * block from there. |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 205 | */ |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 206 | loops = 10; |
| 207 | do { |
Jens Axboe | dc873b6 | 2008-06-04 20:13:04 +0200 | [diff] [blame] | 208 | f->last_free_lookup = (f->num_maps - 1) * |
| 209 | (r / (OS_RAND_MAX + 1.0)); |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 210 | if (!get_next_free_block(td, f, ddir, b)) |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 211 | goto ret; |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 212 | |
Jens Axboe | d1cea52 | 2011-03-28 09:37:41 +0200 | [diff] [blame^] | 213 | if (td->o.use_os_rand) |
| 214 | r = os_random_long(&td->random_state); |
| 215 | else |
| 216 | r = __rand(&td->__random_state); |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 217 | } while (--loops); |
| 218 | |
| 219 | /* |
| 220 | * that didn't work either, try exhaustive search from the start |
| 221 | */ |
| 222 | f->last_free_lookup = 0; |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 223 | ffz: |
| 224 | if (!get_next_free_block(td, f, ddir, b)) |
| 225 | return 0; |
| 226 | f->last_free_lookup = 0; |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 227 | return get_next_free_block(td, f, ddir, b); |
Jens Axboe | 0ce8b11 | 2011-01-27 22:25:29 +0100 | [diff] [blame] | 228 | ret_good: |
| 229 | f->failed_rands = 0; |
| 230 | ret: |
| 231 | return 0; |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 232 | } |
| 233 | |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 234 | static int get_next_rand_block(struct thread_data *td, struct fio_file *f, |
| 235 | enum fio_ddir ddir, unsigned long long *b) |
| 236 | { |
| 237 | if (get_next_rand_offset(td, f, ddir, b)) { |
| 238 | dprint(FD_IO, "%s: rand offset failed, last=%llu, size=%llu\n", |
| 239 | f->file_name, f->last_pos, f->real_file_size); |
| 240 | return 1; |
| 241 | } |
| 242 | |
| 243 | return 0; |
| 244 | } |
| 245 | |
| 246 | static int get_next_seq_block(struct thread_data *td, struct fio_file *f, |
| 247 | enum fio_ddir ddir, unsigned long long *b) |
| 248 | { |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 249 | assert(ddir_rw(ddir)); |
| 250 | |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 251 | if (f->last_pos < f->real_file_size) { |
| 252 | *b = (f->last_pos - f->file_offset) / td->o.min_bs[ddir]; |
| 253 | return 0; |
| 254 | } |
| 255 | |
| 256 | return 1; |
| 257 | } |
| 258 | |
| 259 | static int get_next_block(struct thread_data *td, struct io_u *io_u, |
| 260 | enum fio_ddir ddir, int rw_seq, unsigned long long *b) |
| 261 | { |
| 262 | struct fio_file *f = io_u->file; |
| 263 | int ret; |
| 264 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 265 | assert(ddir_rw(ddir)); |
| 266 | |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 267 | if (rw_seq) { |
| 268 | if (td_random(td)) |
| 269 | ret = get_next_rand_block(td, f, ddir, b); |
| 270 | else |
| 271 | ret = get_next_seq_block(td, f, ddir, b); |
| 272 | } else { |
| 273 | io_u->flags |= IO_U_F_BUSY_OK; |
| 274 | |
| 275 | if (td->o.rw_seq == RW_SEQ_SEQ) { |
| 276 | ret = get_next_seq_block(td, f, ddir, b); |
| 277 | if (ret) |
| 278 | ret = get_next_rand_block(td, f, ddir, b); |
| 279 | } else if (td->o.rw_seq == RW_SEQ_IDENT) { |
| 280 | if (f->last_start != -1ULL) |
David Nellans | 0508320 | 2010-09-23 08:48:15 +0200 | [diff] [blame] | 281 | *b = (f->last_start - f->file_offset) |
| 282 | / td->o.min_bs[ddir]; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 283 | else |
| 284 | *b = 0; |
| 285 | ret = 0; |
| 286 | } else { |
| 287 | log_err("fio: unknown rw_seq=%d\n", td->o.rw_seq); |
| 288 | ret = 1; |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | return ret; |
| 293 | } |
| 294 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 295 | /* |
| 296 | * For random io, generate a random new block and see if it's used. Repeat |
| 297 | * until we find a free one. For sequential io, just return the end of |
| 298 | * the last io issued. |
| 299 | */ |
Jens Axboe | 15dc193 | 2010-03-05 10:59:06 +0100 | [diff] [blame] | 300 | 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] | 301 | { |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 302 | struct fio_file *f = io_u->file; |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 303 | unsigned long long b; |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 304 | enum fio_ddir ddir = io_u->ddir; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 305 | int rw_seq_hit = 0; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 306 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 307 | assert(ddir_rw(ddir)); |
| 308 | |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 309 | if (td->o.ddir_seq_nr && !--td->ddir_seq_nr) { |
| 310 | rw_seq_hit = 1; |
Jens Axboe | 5736c10 | 2010-07-20 12:03:25 -0600 | [diff] [blame] | 311 | td->ddir_seq_nr = td->o.ddir_seq_nr; |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 312 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 313 | |
David Nellans | 0508320 | 2010-09-23 08:48:15 +0200 | [diff] [blame] | 314 | if (get_next_block(td, io_u, ddir, rw_seq_hit, &b)) |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 315 | return 1; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 316 | |
Jens Axboe | 2b7a01d | 2009-03-11 11:00:13 +0100 | [diff] [blame] | 317 | io_u->offset = b * td->o.ba[ddir]; |
Jens Axboe | 009bd84 | 2008-05-15 10:19:46 +0200 | [diff] [blame] | 318 | if (io_u->offset >= f->io_size) { |
| 319 | dprint(FD_IO, "get_next_offset: offset %llu >= io_size %llu\n", |
| 320 | io_u->offset, f->io_size); |
| 321 | return 1; |
| 322 | } |
| 323 | |
| 324 | io_u->offset += f->file_offset; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 325 | if (io_u->offset >= f->real_file_size) { |
| 326 | dprint(FD_IO, "get_next_offset: offset %llu >= size %llu\n", |
| 327 | io_u->offset, f->real_file_size); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 328 | return 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 329 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 330 | |
| 331 | return 0; |
| 332 | } |
| 333 | |
Jens Axboe | 15dc193 | 2010-03-05 10:59:06 +0100 | [diff] [blame] | 334 | static int get_next_offset(struct thread_data *td, struct io_u *io_u) |
| 335 | { |
Jens Axboe | 7eb3657 | 2010-03-08 13:58:49 +0100 | [diff] [blame] | 336 | struct prof_io_ops *ops = &td->prof_io_ops; |
| 337 | |
| 338 | if (ops->fill_io_u_off) |
| 339 | return ops->fill_io_u_off(td, io_u); |
Jens Axboe | 15dc193 | 2010-03-05 10:59:06 +0100 | [diff] [blame] | 340 | |
| 341 | return __get_next_offset(td, io_u); |
| 342 | } |
| 343 | |
| 344 | 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] | 345 | { |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 346 | const int ddir = io_u->ddir; |
Jens Axboe | f3f552b | 2008-06-13 10:27:05 +0200 | [diff] [blame] | 347 | unsigned int uninitialized_var(buflen); |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 348 | unsigned int minbs, maxbs; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 349 | long r; |
| 350 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 351 | assert(ddir_rw(ddir)); |
| 352 | |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 353 | minbs = td->o.min_bs[ddir]; |
| 354 | maxbs = td->o.max_bs[ddir]; |
| 355 | |
| 356 | if (minbs == maxbs) |
| 357 | buflen = minbs; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 358 | else { |
| 359 | r = os_random_long(&td->bsrange_state); |
Jens Axboe | 720e84a | 2009-04-21 08:29:55 +0200 | [diff] [blame] | 360 | if (!td->o.bssplit_nr[ddir]) { |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 361 | buflen = 1 + (unsigned int) ((double) maxbs * |
| 362 | (r / (OS_RAND_MAX + 1.0))); |
| 363 | if (buflen < minbs) |
| 364 | buflen = minbs; |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 365 | } else { |
Jens Axboe | 564ca97 | 2007-12-14 12:21:19 +0100 | [diff] [blame] | 366 | long perc = 0; |
| 367 | unsigned int i; |
| 368 | |
Jens Axboe | 720e84a | 2009-04-21 08:29:55 +0200 | [diff] [blame] | 369 | for (i = 0; i < td->o.bssplit_nr[ddir]; i++) { |
| 370 | struct bssplit *bsp = &td->o.bssplit[ddir][i]; |
Jens Axboe | 564ca97 | 2007-12-14 12:21:19 +0100 | [diff] [blame] | 371 | |
| 372 | buflen = bsp->bs; |
| 373 | perc += bsp->perc; |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 374 | if (r <= ((OS_RAND_MAX / 100L) * perc)) |
Jens Axboe | 564ca97 | 2007-12-14 12:21:19 +0100 | [diff] [blame] | 375 | break; |
| 376 | } |
| 377 | } |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 378 | if (!td->o.bs_unaligned && is_power_of_2(minbs)) |
| 379 | buflen = (buflen + minbs - 1) & ~(minbs - 1); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 380 | } |
| 381 | |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 382 | if (io_u->offset + buflen > io_u->file->real_file_size) { |
| 383 | dprint(FD_IO, "lower buflen %u -> %u (ddir=%d)\n", buflen, |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 384 | minbs, ddir); |
| 385 | buflen = minbs; |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 386 | } |
Jens Axboe | 6a5e688 | 2007-07-26 10:47:51 +0200 | [diff] [blame] | 387 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 388 | return buflen; |
| 389 | } |
| 390 | |
Jens Axboe | 15dc193 | 2010-03-05 10:59:06 +0100 | [diff] [blame] | 391 | static unsigned int get_next_buflen(struct thread_data *td, struct io_u *io_u) |
| 392 | { |
Jens Axboe | 7eb3657 | 2010-03-08 13:58:49 +0100 | [diff] [blame] | 393 | struct prof_io_ops *ops = &td->prof_io_ops; |
| 394 | |
| 395 | if (ops->fill_io_u_size) |
| 396 | return ops->fill_io_u_size(td, io_u); |
Jens Axboe | 15dc193 | 2010-03-05 10:59:06 +0100 | [diff] [blame] | 397 | |
| 398 | return __get_next_buflen(td, io_u); |
| 399 | } |
| 400 | |
Jens Axboe | afe24a5 | 2007-03-16 20:27:27 +0100 | [diff] [blame] | 401 | static void set_rwmix_bytes(struct thread_data *td) |
| 402 | { |
Jens Axboe | afe24a5 | 2007-03-16 20:27:27 +0100 | [diff] [blame] | 403 | unsigned int diff; |
| 404 | |
| 405 | /* |
| 406 | * we do time or byte based switch. this is needed because |
| 407 | * buffered writes may issue a lot quicker than they complete, |
| 408 | * whereas reads do not. |
| 409 | */ |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 410 | diff = td->o.rwmix[td->rwmix_ddir ^ 1]; |
Jens Axboe | 04c540d | 2008-05-28 10:35:26 +0200 | [diff] [blame] | 411 | td->rwmix_issues = (td->io_issues[td->rwmix_ddir] * diff) / 100; |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 412 | } |
| 413 | |
| 414 | static inline enum fio_ddir get_rand_ddir(struct thread_data *td) |
| 415 | { |
| 416 | unsigned int v; |
| 417 | long r; |
| 418 | |
| 419 | r = os_random_long(&td->rwmix_state); |
Jens Axboe | dc873b6 | 2008-06-04 20:13:04 +0200 | [diff] [blame] | 420 | v = 1 + (int) (100.0 * (r / (OS_RAND_MAX + 1.0))); |
Jens Axboe | 04c540d | 2008-05-28 10:35:26 +0200 | [diff] [blame] | 421 | if (v <= td->o.rwmix[DDIR_READ]) |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 422 | return DDIR_READ; |
| 423 | |
| 424 | return DDIR_WRITE; |
Jens Axboe | afe24a5 | 2007-03-16 20:27:27 +0100 | [diff] [blame] | 425 | } |
| 426 | |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 427 | static enum fio_ddir rate_ddir(struct thread_data *td, enum fio_ddir ddir) |
| 428 | { |
| 429 | enum fio_ddir odir = ddir ^ 1; |
| 430 | struct timeval t; |
| 431 | long usec; |
| 432 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 433 | assert(ddir_rw(ddir)); |
| 434 | |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 435 | if (td->rate_pending_usleep[ddir] <= 0) |
| 436 | return ddir; |
| 437 | |
| 438 | /* |
| 439 | * We have too much pending sleep in this direction. See if we |
| 440 | * should switch. |
| 441 | */ |
| 442 | if (td_rw(td)) { |
| 443 | /* |
| 444 | * Other direction does not have too much pending, switch |
| 445 | */ |
| 446 | if (td->rate_pending_usleep[odir] < 100000) |
| 447 | return odir; |
| 448 | |
| 449 | /* |
| 450 | * Both directions have pending sleep. Sleep the minimum time |
| 451 | * and deduct from both. |
| 452 | */ |
| 453 | if (td->rate_pending_usleep[ddir] <= |
| 454 | td->rate_pending_usleep[odir]) { |
| 455 | usec = td->rate_pending_usleep[ddir]; |
| 456 | } else { |
| 457 | usec = td->rate_pending_usleep[odir]; |
| 458 | ddir = odir; |
| 459 | } |
| 460 | } else |
| 461 | usec = td->rate_pending_usleep[ddir]; |
| 462 | |
| 463 | fio_gettime(&t, NULL); |
| 464 | usec_sleep(td, usec); |
| 465 | usec = utime_since_now(&t); |
| 466 | |
| 467 | td->rate_pending_usleep[ddir] -= usec; |
| 468 | |
| 469 | odir = ddir ^ 1; |
| 470 | if (td_rw(td) && __should_check_rate(td, odir)) |
| 471 | td->rate_pending_usleep[odir] -= usec; |
Jens Axboe | 0b9d69e | 2009-09-11 22:29:54 +0200 | [diff] [blame] | 472 | |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 473 | return ddir; |
| 474 | } |
| 475 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 476 | /* |
| 477 | * Return the data direction for the next io_u. If the job is a |
| 478 | * mixed read/write workload, check the rwmix cycle and switch if |
| 479 | * necessary. |
| 480 | */ |
Jens Axboe | 1e97cce | 2006-12-05 11:44:16 +0100 | [diff] [blame] | 481 | static enum fio_ddir get_rw_ddir(struct thread_data *td) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 482 | { |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 483 | enum fio_ddir ddir; |
| 484 | |
Jens Axboe | 5f9099e | 2009-06-16 22:40:26 +0200 | [diff] [blame] | 485 | /* |
| 486 | * see if it's time to fsync |
| 487 | */ |
| 488 | if (td->o.fsync_blocks && |
| 489 | !(td->io_issues[DDIR_WRITE] % td->o.fsync_blocks) && |
| 490 | td->io_issues[DDIR_WRITE] && should_fsync(td)) |
| 491 | return DDIR_SYNC; |
| 492 | |
| 493 | /* |
| 494 | * see if it's time to fdatasync |
| 495 | */ |
| 496 | if (td->o.fdatasync_blocks && |
| 497 | !(td->io_issues[DDIR_WRITE] % td->o.fdatasync_blocks) && |
| 498 | td->io_issues[DDIR_WRITE] && should_fsync(td)) |
| 499 | return DDIR_DATASYNC; |
| 500 | |
Jens Axboe | 44f2969 | 2010-03-09 20:09:44 +0100 | [diff] [blame] | 501 | /* |
| 502 | * see if it's time to sync_file_range |
| 503 | */ |
| 504 | if (td->sync_file_range_nr && |
| 505 | !(td->io_issues[DDIR_WRITE] % td->sync_file_range_nr) && |
| 506 | td->io_issues[DDIR_WRITE] && should_fsync(td)) |
| 507 | return DDIR_SYNC_FILE_RANGE; |
| 508 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 509 | if (td_rw(td)) { |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 510 | /* |
| 511 | * Check if it's time to seed a new data direction. |
| 512 | */ |
Jens Axboe | e492866 | 2008-04-07 09:19:46 +0200 | [diff] [blame] | 513 | if (td->io_issues[td->rwmix_ddir] >= td->rwmix_issues) { |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 514 | /* |
| 515 | * Put a top limit on how many bytes we do for |
| 516 | * one data direction, to avoid overflowing the |
| 517 | * ranges too much |
| 518 | */ |
| 519 | ddir = get_rand_ddir(td); |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 520 | |
| 521 | if (ddir != td->rwmix_ddir) |
| 522 | set_rwmix_bytes(td); |
| 523 | |
| 524 | td->rwmix_ddir = ddir; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 525 | } |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 526 | ddir = td->rwmix_ddir; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 527 | } else if (td_read(td)) |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 528 | ddir = DDIR_READ; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 529 | else |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 530 | ddir = DDIR_WRITE; |
| 531 | |
| 532 | td->rwmix_ddir = rate_ddir(td, ddir); |
| 533 | return td->rwmix_ddir; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 534 | } |
| 535 | |
Jens Axboe | 1ef2b6b | 2010-10-08 15:07:01 +0200 | [diff] [blame] | 536 | static void set_rw_ddir(struct thread_data *td, struct io_u *io_u) |
| 537 | { |
| 538 | io_u->ddir = get_rw_ddir(td); |
| 539 | |
| 540 | if (io_u->ddir == DDIR_WRITE && (td->io_ops->flags & FIO_BARRIER) && |
| 541 | td->o.barrier_blocks && |
| 542 | !(td->io_issues[DDIR_WRITE] % td->o.barrier_blocks) && |
| 543 | td->io_issues[DDIR_WRITE]) |
| 544 | io_u->flags |= IO_U_F_BARRIER; |
| 545 | } |
| 546 | |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 547 | void put_file_log(struct thread_data *td, struct fio_file *f) |
Jens Axboe | 60f2c65 | 2008-05-16 12:31:36 +0200 | [diff] [blame] | 548 | { |
| 549 | int ret = put_file(td, f); |
| 550 | |
| 551 | if (ret) |
| 552 | td_verror(td, ret, "file close"); |
| 553 | } |
| 554 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 555 | void put_io_u(struct thread_data *td, struct io_u *io_u) |
| 556 | { |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 557 | td_io_u_lock(td); |
| 558 | |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 559 | io_u->flags |= IO_U_F_FREE; |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 560 | io_u->flags &= ~IO_U_F_FREE_DEF; |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 561 | |
Jens Axboe | 60f2c65 | 2008-05-16 12:31:36 +0200 | [diff] [blame] | 562 | if (io_u->file) |
| 563 | put_file_log(td, io_u->file); |
Jens Axboe | 2dbdab7 | 2007-04-26 10:21:15 +0200 | [diff] [blame] | 564 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 565 | io_u->file = NULL; |
Radha Ramachandran | 0c41214 | 2009-11-03 21:45:31 +0100 | [diff] [blame] | 566 | if (io_u->flags & IO_U_F_IN_CUR_DEPTH) |
| 567 | td->cur_depth--; |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 568 | flist_del_init(&io_u->list); |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 569 | flist_add(&io_u->list, &td->io_u_freelist); |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 570 | td_io_u_unlock(td); |
| 571 | td_io_u_free_notify(td); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 572 | } |
| 573 | |
Radha Ramachandran | f2bba18 | 2009-06-15 08:40:16 +0200 | [diff] [blame] | 574 | void clear_io_u(struct thread_data *td, struct io_u *io_u) |
| 575 | { |
| 576 | io_u->flags &= ~IO_U_F_FLIGHT; |
| 577 | put_io_u(td, io_u); |
| 578 | } |
| 579 | |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 580 | void requeue_io_u(struct thread_data *td, struct io_u **io_u) |
| 581 | { |
| 582 | struct io_u *__io_u = *io_u; |
| 583 | |
Jens Axboe | 465221b | 2008-05-30 22:07:49 +0200 | [diff] [blame] | 584 | dprint(FD_IO, "requeue %p\n", __io_u); |
| 585 | |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 586 | td_io_u_lock(td); |
| 587 | |
Jens Axboe | 4d2e0f4 | 2007-02-24 13:31:57 +0100 | [diff] [blame] | 588 | __io_u->flags |= IO_U_F_FREE; |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 589 | 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] | 590 | td->io_issues[__io_u->ddir]--; |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 591 | |
Jens Axboe | 4d2e0f4 | 2007-02-24 13:31:57 +0100 | [diff] [blame] | 592 | __io_u->flags &= ~IO_U_F_FLIGHT; |
Radha Ramachandran | 0c41214 | 2009-11-03 21:45:31 +0100 | [diff] [blame] | 593 | if (__io_u->flags & IO_U_F_IN_CUR_DEPTH) |
| 594 | td->cur_depth--; |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 595 | flist_del(&__io_u->list); |
| 596 | flist_add_tail(&__io_u->list, &td->io_u_requeues); |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 597 | td_io_u_unlock(td); |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 598 | *io_u = NULL; |
| 599 | } |
| 600 | |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 601 | 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] | 602 | { |
Jens Axboe | b4c5e1a | 2007-10-25 18:44:45 +0200 | [diff] [blame] | 603 | if (td->io_ops->flags & FIO_NOIO) |
| 604 | goto out; |
| 605 | |
Jens Axboe | 1ef2b6b | 2010-10-08 15:07:01 +0200 | [diff] [blame] | 606 | set_rw_ddir(td, io_u); |
Jens Axboe | a00735e | 2006-11-03 08:58:08 +0100 | [diff] [blame] | 607 | |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 608 | /* |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 609 | * fsync() or fdatasync() or trim etc, we are done |
Jens Axboe | 5f9099e | 2009-06-16 22:40:26 +0200 | [diff] [blame] | 610 | */ |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 611 | if (!ddir_rw(io_u->ddir)) |
Jens Axboe | 5f9099e | 2009-06-16 22:40:26 +0200 | [diff] [blame] | 612 | goto out; |
| 613 | |
| 614 | /* |
Jens Axboe | 48f5abd | 2007-07-20 13:25:04 +0200 | [diff] [blame] | 615 | * See if it's time to switch to a new zone |
| 616 | */ |
| 617 | if (td->zone_bytes >= td->o.zone_size) { |
| 618 | td->zone_bytes = 0; |
| 619 | io_u->file->last_pos += td->o.zone_skip; |
| 620 | td->io_skip_bytes += td->o.zone_skip; |
| 621 | } |
| 622 | |
| 623 | /* |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 624 | * No log, let the seq/rand engine retrieve the next buflen and |
| 625 | * position. |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 626 | */ |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 627 | if (get_next_offset(td, io_u)) { |
| 628 | dprint(FD_IO, "io_u %p, failed getting offset\n", io_u); |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 629 | return 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 630 | } |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 631 | |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 632 | io_u->buflen = get_next_buflen(td, io_u); |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 633 | if (!io_u->buflen) { |
| 634 | dprint(FD_IO, "io_u %p, failed getting buflen\n", io_u); |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 635 | return 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 636 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 637 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 638 | if (io_u->offset + io_u->buflen > io_u->file->real_file_size) { |
| 639 | dprint(FD_IO, "io_u %p, offset too large\n", io_u); |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 640 | dprint(FD_IO, " off=%llu/%lu > %llu\n", io_u->offset, |
| 641 | io_u->buflen, io_u->file->real_file_size); |
Jens Axboe | 6a5e688 | 2007-07-26 10:47:51 +0200 | [diff] [blame] | 642 | return 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 643 | } |
Jens Axboe | 6a5e688 | 2007-07-26 10:47:51 +0200 | [diff] [blame] | 644 | |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 645 | /* |
| 646 | * mark entry before potentially trimming io_u |
| 647 | */ |
Jens Axboe | 303032a | 2008-03-26 10:11:10 +0100 | [diff] [blame] | 648 | if (td_random(td) && file_randommap(td, io_u->file)) |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 649 | mark_random_map(td, io_u); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 650 | |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 651 | /* |
| 652 | * If using a write iolog, store this entry. |
| 653 | */ |
Jens Axboe | c38e946 | 2007-03-27 08:48:48 +0200 | [diff] [blame] | 654 | out: |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 655 | dprint_io_u(io_u, "fill_io_u"); |
Jens Axboe | d9d91e3 | 2008-01-31 13:25:42 +0100 | [diff] [blame] | 656 | td->zone_bytes += io_u->buflen; |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 657 | log_io_u(td, io_u); |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 658 | return 0; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 659 | } |
| 660 | |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 661 | static void __io_u_mark_map(unsigned int *map, unsigned int nr) |
| 662 | { |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 663 | int idx = 0; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 664 | |
| 665 | switch (nr) { |
| 666 | default: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 667 | idx = 6; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 668 | break; |
| 669 | case 33 ... 64: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 670 | idx = 5; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 671 | break; |
| 672 | case 17 ... 32: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 673 | idx = 4; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 674 | break; |
| 675 | case 9 ... 16: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 676 | idx = 3; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 677 | break; |
| 678 | case 5 ... 8: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 679 | idx = 2; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 680 | break; |
| 681 | case 1 ... 4: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 682 | idx = 1; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 683 | case 0: |
| 684 | break; |
| 685 | } |
| 686 | |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 687 | map[idx]++; |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 688 | } |
| 689 | |
| 690 | void io_u_mark_submit(struct thread_data *td, unsigned int nr) |
| 691 | { |
| 692 | __io_u_mark_map(td->ts.io_u_submit, nr); |
| 693 | td->ts.total_submit++; |
| 694 | } |
| 695 | |
| 696 | void io_u_mark_complete(struct thread_data *td, unsigned int nr) |
| 697 | { |
| 698 | __io_u_mark_map(td->ts.io_u_complete, nr); |
| 699 | td->ts.total_complete++; |
| 700 | } |
| 701 | |
Jens Axboe | d800575 | 2008-05-15 09:49:09 +0200 | [diff] [blame] | 702 | void io_u_mark_depth(struct thread_data *td, unsigned int nr) |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 703 | { |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 704 | int idx = 0; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 705 | |
| 706 | switch (td->cur_depth) { |
| 707 | default: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 708 | idx = 6; |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 709 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 710 | case 32 ... 63: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 711 | idx = 5; |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 712 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 713 | case 16 ... 31: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 714 | idx = 4; |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 715 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 716 | case 8 ... 15: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 717 | idx = 3; |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 718 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 719 | case 4 ... 7: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 720 | idx = 2; |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 721 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 722 | case 2 ... 3: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 723 | idx = 1; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 724 | case 1: |
| 725 | break; |
| 726 | } |
| 727 | |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 728 | td->ts.io_u_map[idx] += nr; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 729 | } |
| 730 | |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 731 | static void io_u_mark_lat_usec(struct thread_data *td, unsigned long usec) |
| 732 | { |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 733 | int idx = 0; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 734 | |
| 735 | assert(usec < 1000); |
| 736 | |
| 737 | switch (usec) { |
| 738 | case 750 ... 999: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 739 | idx = 9; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 740 | break; |
| 741 | case 500 ... 749: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 742 | idx = 8; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 743 | break; |
| 744 | case 250 ... 499: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 745 | idx = 7; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 746 | break; |
| 747 | case 100 ... 249: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 748 | idx = 6; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 749 | break; |
| 750 | case 50 ... 99: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 751 | idx = 5; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 752 | break; |
| 753 | case 20 ... 49: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 754 | idx = 4; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 755 | break; |
| 756 | case 10 ... 19: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 757 | idx = 3; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 758 | break; |
| 759 | case 4 ... 9: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 760 | idx = 2; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 761 | break; |
| 762 | case 2 ... 3: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 763 | idx = 1; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 764 | case 0 ... 1: |
| 765 | break; |
| 766 | } |
| 767 | |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 768 | assert(idx < FIO_IO_U_LAT_U_NR); |
| 769 | td->ts.io_u_lat_u[idx]++; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 770 | } |
| 771 | |
| 772 | 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] | 773 | { |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 774 | int idx = 0; |
Jens Axboe | ec11830 | 2007-02-17 04:38:20 +0100 | [diff] [blame] | 775 | |
| 776 | switch (msec) { |
| 777 | default: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 778 | idx = 11; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 779 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 780 | case 1000 ... 1999: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 781 | idx = 10; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 782 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 783 | case 750 ... 999: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 784 | idx = 9; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 785 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 786 | case 500 ... 749: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 787 | idx = 8; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 788 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 789 | case 250 ... 499: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 790 | idx = 7; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 791 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 792 | case 100 ... 249: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 793 | idx = 6; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 794 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 795 | case 50 ... 99: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 796 | idx = 5; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 797 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 798 | case 20 ... 49: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 799 | idx = 4; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 800 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 801 | case 10 ... 19: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 802 | idx = 3; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 803 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 804 | case 4 ... 9: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 805 | idx = 2; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 806 | break; |
Jens Axboe | ec11830 | 2007-02-17 04:38:20 +0100 | [diff] [blame] | 807 | case 2 ... 3: |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 808 | idx = 1; |
Jens Axboe | ec11830 | 2007-02-17 04:38:20 +0100 | [diff] [blame] | 809 | case 0 ... 1: |
| 810 | break; |
| 811 | } |
| 812 | |
Jens Axboe | 2b13e71 | 2011-01-19 14:04:16 -0700 | [diff] [blame] | 813 | assert(idx < FIO_IO_U_LAT_M_NR); |
| 814 | td->ts.io_u_lat_m[idx]++; |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 815 | } |
| 816 | |
| 817 | static void io_u_mark_latency(struct thread_data *td, unsigned long usec) |
| 818 | { |
| 819 | if (usec < 1000) |
| 820 | io_u_mark_lat_usec(td, usec); |
| 821 | else |
| 822 | io_u_mark_lat_msec(td, usec / 1000); |
Jens Axboe | ec11830 | 2007-02-17 04:38:20 +0100 | [diff] [blame] | 823 | } |
| 824 | |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 825 | /* |
| 826 | * Get next file to service by choosing one at random |
| 827 | */ |
Jens Axboe | 2cc5293 | 2009-06-09 14:14:20 +0200 | [diff] [blame] | 828 | static struct fio_file *get_next_file_rand(struct thread_data *td, |
| 829 | enum fio_file_flags goodf, |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 830 | enum fio_file_flags badf) |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 831 | { |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 832 | struct fio_file *f; |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 833 | int fno; |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 834 | |
| 835 | do { |
Jens Axboe | 7c83c08 | 2007-03-01 10:04:15 +0100 | [diff] [blame] | 836 | long r = os_random_long(&td->next_file_state); |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 837 | int opened = 0; |
Jens Axboe | 7c83c08 | 2007-03-01 10:04:15 +0100 | [diff] [blame] | 838 | |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 839 | fno = (unsigned int) ((double) td->o.nr_files |
Jens Axboe | dc873b6 | 2008-06-04 20:13:04 +0200 | [diff] [blame] | 840 | * (r / (OS_RAND_MAX + 1.0))); |
Jens Axboe | 126d65c | 2008-03-01 18:04:31 +0100 | [diff] [blame] | 841 | f = td->files[fno]; |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 842 | if (fio_file_done(f)) |
Jens Axboe | 059e63c | 2007-03-27 20:34:47 +0200 | [diff] [blame] | 843 | continue; |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 844 | |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 845 | if (!fio_file_open(f)) { |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 846 | int err; |
| 847 | |
| 848 | err = td_io_open_file(td, f); |
| 849 | if (err) |
| 850 | continue; |
| 851 | opened = 1; |
| 852 | } |
| 853 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 854 | if ((!goodf || (f->flags & goodf)) && !(f->flags & badf)) { |
| 855 | dprint(FD_FILE, "get_next_file_rand: %p\n", f); |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 856 | return f; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 857 | } |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 858 | if (opened) |
| 859 | td_io_close_file(td, f); |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 860 | } while (1); |
| 861 | } |
| 862 | |
| 863 | /* |
| 864 | * Get next file to service by doing round robin between all available ones |
| 865 | */ |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 866 | static struct fio_file *get_next_file_rr(struct thread_data *td, int goodf, |
| 867 | int badf) |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 868 | { |
| 869 | unsigned int old_next_file = td->next_file; |
| 870 | struct fio_file *f; |
| 871 | |
| 872 | do { |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 873 | int opened = 0; |
| 874 | |
Jens Axboe | 126d65c | 2008-03-01 18:04:31 +0100 | [diff] [blame] | 875 | f = td->files[td->next_file]; |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 876 | |
| 877 | td->next_file++; |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 878 | if (td->next_file >= td->o.nr_files) |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 879 | td->next_file = 0; |
| 880 | |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 881 | 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] | 882 | if (fio_file_done(f)) { |
Jens Axboe | d5ed68e | 2007-03-28 09:33:43 +0200 | [diff] [blame] | 883 | f = NULL; |
Jens Axboe | 059e63c | 2007-03-27 20:34:47 +0200 | [diff] [blame] | 884 | continue; |
Jens Axboe | d5ed68e | 2007-03-28 09:33:43 +0200 | [diff] [blame] | 885 | } |
Jens Axboe | 059e63c | 2007-03-27 20:34:47 +0200 | [diff] [blame] | 886 | |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 887 | if (!fio_file_open(f)) { |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 888 | int err; |
| 889 | |
| 890 | err = td_io_open_file(td, f); |
Jens Axboe | b5696bf | 2009-03-04 16:03:49 +0100 | [diff] [blame] | 891 | if (err) { |
| 892 | dprint(FD_FILE, "error %d on open of %s\n", |
| 893 | err, f->file_name); |
Jens Axboe | 87c27b4 | 2009-05-20 10:45:12 +0200 | [diff] [blame] | 894 | f = NULL; |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 895 | continue; |
Jens Axboe | b5696bf | 2009-03-04 16:03:49 +0100 | [diff] [blame] | 896 | } |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 897 | opened = 1; |
| 898 | } |
| 899 | |
Jens Axboe | 0b9d69e | 2009-09-11 22:29:54 +0200 | [diff] [blame] | 900 | dprint(FD_FILE, "goodf=%x, badf=%x, ff=%x\n", goodf, badf, |
| 901 | f->flags); |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 902 | if ((!goodf || (f->flags & goodf)) && !(f->flags & badf)) |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 903 | break; |
| 904 | |
Jens Axboe | 87b1067 | 2009-03-04 09:39:47 +0100 | [diff] [blame] | 905 | if (opened) |
| 906 | td_io_close_file(td, f); |
| 907 | |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 908 | f = NULL; |
| 909 | } while (td->next_file != old_next_file); |
| 910 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 911 | dprint(FD_FILE, "get_next_file_rr: %p\n", f); |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 912 | return f; |
| 913 | } |
| 914 | |
Jens Axboe | 7eb3657 | 2010-03-08 13:58:49 +0100 | [diff] [blame] | 915 | static struct fio_file *__get_next_file(struct thread_data *td) |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 916 | { |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 917 | struct fio_file *f; |
| 918 | |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 919 | assert(td->o.nr_files <= td->files_index); |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 920 | |
Jens Axboe | b5696bf | 2009-03-04 16:03:49 +0100 | [diff] [blame] | 921 | if (td->nr_done_files >= td->o.nr_files) { |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 922 | dprint(FD_FILE, "get_next_file: nr_open=%d, nr_done=%d," |
| 923 | " nr_files=%d\n", td->nr_open_files, |
| 924 | td->nr_done_files, |
| 925 | td->o.nr_files); |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 926 | return NULL; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 927 | } |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 928 | |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 929 | f = td->file_service_file; |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 930 | if (f && fio_file_open(f) && !fio_file_closing(f)) { |
Jens Axboe | a086c25 | 2009-03-04 08:27:37 +0100 | [diff] [blame] | 931 | if (td->o.file_service_type == FIO_FSERVICE_SEQ) |
| 932 | goto out; |
| 933 | if (td->file_service_left--) |
| 934 | goto out; |
| 935 | } |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 936 | |
Jens Axboe | a086c25 | 2009-03-04 08:27:37 +0100 | [diff] [blame] | 937 | if (td->o.file_service_type == FIO_FSERVICE_RR || |
| 938 | td->o.file_service_type == FIO_FSERVICE_SEQ) |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 939 | f = get_next_file_rr(td, FIO_FILE_open, FIO_FILE_closing); |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 940 | else |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 941 | f = get_next_file_rand(td, FIO_FILE_open, FIO_FILE_closing); |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 942 | |
| 943 | td->file_service_file = f; |
| 944 | td->file_service_left = td->file_service_nr - 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 945 | out: |
Jens Axboe | 683023e | 2009-03-04 08:41:31 +0100 | [diff] [blame] | 946 | 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] | 947 | return f; |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 948 | } |
| 949 | |
Jens Axboe | 7eb3657 | 2010-03-08 13:58:49 +0100 | [diff] [blame] | 950 | static struct fio_file *get_next_file(struct thread_data *td) |
| 951 | { |
| 952 | struct prof_io_ops *ops = &td->prof_io_ops; |
| 953 | |
| 954 | if (ops->get_next_file) |
| 955 | return ops->get_next_file(td); |
| 956 | |
| 957 | return __get_next_file(td); |
| 958 | } |
| 959 | |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 960 | static int set_io_u_file(struct thread_data *td, struct io_u *io_u) |
| 961 | { |
| 962 | struct fio_file *f; |
| 963 | |
| 964 | do { |
| 965 | f = get_next_file(td); |
| 966 | if (!f) |
| 967 | return 1; |
| 968 | |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 969 | io_u->file = f; |
| 970 | get_file(f); |
| 971 | |
| 972 | if (!fill_io_u(td, io_u)) |
| 973 | break; |
| 974 | |
Jens Axboe | b5696bf | 2009-03-04 16:03:49 +0100 | [diff] [blame] | 975 | put_file_log(td, f); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 976 | td_io_close_file(td, f); |
Jens Axboe | b5696bf | 2009-03-04 16:03:49 +0100 | [diff] [blame] | 977 | io_u->file = NULL; |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 978 | fio_file_set_done(f); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 979 | td->nr_done_files++; |
Jens Axboe | 0b9d69e | 2009-09-11 22:29:54 +0200 | [diff] [blame] | 980 | dprint(FD_FILE, "%s: is done (%d of %d)\n", f->file_name, |
| 981 | td->nr_done_files, td->o.nr_files); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 982 | } while (1); |
| 983 | |
| 984 | return 0; |
| 985 | } |
| 986 | |
| 987 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 988 | struct io_u *__get_io_u(struct thread_data *td) |
| 989 | { |
| 990 | struct io_u *io_u = NULL; |
| 991 | |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 992 | td_io_u_lock(td); |
| 993 | |
| 994 | again: |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 995 | if (!flist_empty(&td->io_u_requeues)) |
| 996 | 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] | 997 | else if (!queue_full(td)) { |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 998 | 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] | 999 | |
Jens Axboe | 6040dab | 2006-10-24 19:38:15 +0200 | [diff] [blame] | 1000 | io_u->buflen = 0; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1001 | io_u->resid = 0; |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 1002 | io_u->file = NULL; |
Jens Axboe | d7762cf | 2007-02-23 12:34:57 +0100 | [diff] [blame] | 1003 | io_u->end_io = NULL; |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 1004 | } |
| 1005 | |
| 1006 | if (io_u) { |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 1007 | assert(io_u->flags & IO_U_F_FREE); |
Jens Axboe | 2ecc1b5 | 2009-11-04 20:58:09 +0100 | [diff] [blame] | 1008 | io_u->flags &= ~(IO_U_F_FREE | IO_U_F_FREE_DEF); |
Jens Axboe | 1ef2b6b | 2010-10-08 15:07:01 +0200 | [diff] [blame] | 1009 | io_u->flags &= ~(IO_U_F_TRIMMED | IO_U_F_BARRIER); |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 1010 | |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 1011 | io_u->error = 0; |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 1012 | flist_del(&io_u->list); |
| 1013 | flist_add(&io_u->list, &td->io_u_busylist); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1014 | td->cur_depth++; |
Radha Ramachandran | 0c41214 | 2009-11-03 21:45:31 +0100 | [diff] [blame] | 1015 | io_u->flags |= IO_U_F_IN_CUR_DEPTH; |
Jens Axboe | 1dec3e0 | 2010-03-19 10:33:39 +0100 | [diff] [blame] | 1016 | } else if (td->o.verify_async) { |
| 1017 | /* |
| 1018 | * We ran out, wait for async verify threads to finish and |
| 1019 | * return one |
| 1020 | */ |
| 1021 | pthread_cond_wait(&td->free_cond, &td->io_u_lock); |
| 1022 | goto again; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1023 | } |
| 1024 | |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 1025 | td_io_u_unlock(td); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1026 | return io_u; |
| 1027 | } |
| 1028 | |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1029 | 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] | 1030 | { |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1031 | if (td->o.trim_backlog && td->trim_entries) { |
| 1032 | int get_trim = 0; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1033 | |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1034 | if (td->trim_batch) { |
| 1035 | td->trim_batch--; |
| 1036 | get_trim = 1; |
| 1037 | } else if (!(td->io_hist_len % td->o.trim_backlog) && |
| 1038 | td->last_ddir != DDIR_READ) { |
| 1039 | td->trim_batch = td->o.trim_batch; |
| 1040 | if (!td->trim_batch) |
| 1041 | td->trim_batch = td->o.trim_backlog; |
| 1042 | get_trim = 1; |
| 1043 | } |
| 1044 | |
| 1045 | if (get_trim && !get_next_trim(td, io_u)) |
| 1046 | return 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1047 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1048 | |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1049 | return 0; |
| 1050 | } |
| 1051 | |
| 1052 | static int check_get_verify(struct thread_data *td, struct io_u *io_u) |
| 1053 | { |
Jens Axboe | 9e14418 | 2010-06-15 14:25:36 +0200 | [diff] [blame] | 1054 | if (td->o.verify_backlog && td->io_hist_len) { |
| 1055 | int get_verify = 0; |
| 1056 | |
| 1057 | if (td->verify_batch) { |
| 1058 | td->verify_batch--; |
| 1059 | get_verify = 1; |
| 1060 | } else if (!(td->io_hist_len % td->o.verify_backlog) && |
| 1061 | td->last_ddir != DDIR_READ) { |
| 1062 | td->verify_batch = td->o.verify_batch; |
Jens Axboe | f8a75c9 | 2010-06-15 14:27:28 +0200 | [diff] [blame] | 1063 | if (!td->verify_batch) |
| 1064 | td->verify_batch = td->o.verify_backlog; |
Jens Axboe | 9e14418 | 2010-06-15 14:25:36 +0200 | [diff] [blame] | 1065 | get_verify = 1; |
| 1066 | } |
| 1067 | |
| 1068 | if (get_verify && !get_next_verify(td, io_u)) |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1069 | return 1; |
Jens Axboe | 9e14418 | 2010-06-15 14:25:36 +0200 | [diff] [blame] | 1070 | } |
| 1071 | |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1072 | return 0; |
| 1073 | } |
| 1074 | |
| 1075 | /* |
| 1076 | * Return an io_u to be processed. Gets a buflen and offset, sets direction, |
| 1077 | * etc. The returned io_u is fully ready to be prepped and submitted. |
| 1078 | */ |
| 1079 | struct io_u *get_io_u(struct thread_data *td) |
| 1080 | { |
| 1081 | struct fio_file *f; |
| 1082 | struct io_u *io_u; |
| 1083 | |
| 1084 | io_u = __get_io_u(td); |
| 1085 | if (!io_u) { |
| 1086 | dprint(FD_IO, "__get_io_u failed\n"); |
| 1087 | return NULL; |
| 1088 | } |
| 1089 | |
| 1090 | if (check_get_verify(td, io_u)) |
| 1091 | goto out; |
| 1092 | if (check_get_trim(td, io_u)) |
| 1093 | goto out; |
| 1094 | |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 1095 | /* |
| 1096 | * from a requeue, io_u already setup |
| 1097 | */ |
| 1098 | if (io_u->file) |
Jens Axboe | 77f392b | 2007-02-19 20:13:09 +0100 | [diff] [blame] | 1099 | goto out; |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 1100 | |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1101 | /* |
| 1102 | * If using an iolog, grab next piece if any available. |
| 1103 | */ |
| 1104 | if (td->o.read_iolog_file) { |
| 1105 | if (read_iolog_get(td, io_u)) |
| 1106 | goto err_put; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1107 | } else if (set_io_u_file(td, io_u)) { |
| 1108 | dprint(FD_IO, "io_u %p, setting file failed\n", io_u); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1109 | goto err_put; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1110 | } |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 1111 | |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1112 | f = io_u->file; |
Jens Axboe | d6aed79 | 2009-06-03 08:41:15 +0200 | [diff] [blame] | 1113 | assert(fio_file_open(f)); |
Jens Axboe | 97af62c | 2007-05-22 11:12:13 +0200 | [diff] [blame] | 1114 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 1115 | if (ddir_rw(io_u->ddir)) { |
Jens Axboe | d0656a9 | 2008-02-01 18:33:23 +0100 | [diff] [blame] | 1116 | if (!io_u->buflen && !(td->io_ops->flags & FIO_NOIO)) { |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1117 | 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] | 1118 | goto err_put; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1119 | } |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 1120 | |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 1121 | f->last_start = io_u->offset; |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 1122 | f->last_pos = io_u->offset + io_u->buflen; |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 1123 | |
Radha Ramachandran | c311cd2 | 2009-04-28 08:12:56 +0200 | [diff] [blame] | 1124 | if (td->o.verify != VERIFY_NONE && io_u->ddir == DDIR_WRITE) |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 1125 | populate_verify_io_u(td, io_u); |
Jens Axboe | e4dad9c | 2008-05-28 10:53:44 +0200 | [diff] [blame] | 1126 | else if (td->o.refill_buffers && io_u->ddir == DDIR_WRITE) |
| 1127 | io_u_fill_buffer(td, io_u, io_u->xfer_buflen); |
Radha Ramachandran | cbe8d75 | 2010-07-14 08:36:07 +0200 | [diff] [blame] | 1128 | else if (io_u->ddir == DDIR_READ) { |
| 1129 | /* |
| 1130 | * Reset the buf_filled parameters so next time if the |
| 1131 | * buffer is used for writes it is refilled. |
| 1132 | */ |
Radha Ramachandran | cbe8d75 | 2010-07-14 08:36:07 +0200 | [diff] [blame] | 1133 | io_u->buf_filled_len = 0; |
| 1134 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1135 | } |
| 1136 | |
Jens Axboe | 165faf1 | 2007-02-07 11:30:37 +0100 | [diff] [blame] | 1137 | /* |
| 1138 | * Set io data pointers. |
| 1139 | */ |
Jens Axboe | cec6b55 | 2007-02-06 20:15:38 +0100 | [diff] [blame] | 1140 | io_u->xfer_buf = io_u->buf; |
| 1141 | io_u->xfer_buflen = io_u->buflen; |
Jens Axboe | 5973caf | 2008-05-21 19:52:35 +0200 | [diff] [blame] | 1142 | |
Jens Axboe | 6ac7a33 | 2008-03-01 15:22:32 +0100 | [diff] [blame] | 1143 | out: |
Jens Axboe | 0d29de8 | 2010-09-01 13:54:15 +0200 | [diff] [blame] | 1144 | assert(io_u->file); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1145 | if (!td_io_prep(td, io_u)) { |
Jens Axboe | 993bf48 | 2008-11-14 13:04:53 +0100 | [diff] [blame] | 1146 | if (!td->o.disable_slat) |
| 1147 | fio_gettime(&io_u->start_time, NULL); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1148 | return io_u; |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 1149 | } |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1150 | err_put: |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1151 | dprint(FD_IO, "get_io_u failed\n"); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 1152 | put_io_u(td, io_u); |
| 1153 | return NULL; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1154 | } |
| 1155 | |
Jens Axboe | 5451792 | 2007-03-05 10:06:06 +0100 | [diff] [blame] | 1156 | void io_u_log_error(struct thread_data *td, struct io_u *io_u) |
| 1157 | { |
Jens Axboe | 825f818 | 2010-08-25 10:47:18 +0200 | [diff] [blame] | 1158 | const char *msg[] = { "read", "write", "sync", "datasync", |
| 1159 | "sync_file_range", "wait", "trim" }; |
| 1160 | |
| 1161 | |
Jens Axboe | 5451792 | 2007-03-05 10:06:06 +0100 | [diff] [blame] | 1162 | |
| 1163 | log_err("fio: io_u error"); |
| 1164 | |
| 1165 | if (io_u->file) |
| 1166 | log_err(" on file %s", io_u->file->file_name); |
| 1167 | |
| 1168 | log_err(": %s\n", strerror(io_u->error)); |
| 1169 | |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 1170 | log_err(" %s offset=%llu, buflen=%lu\n", msg[io_u->ddir], |
| 1171 | io_u->offset, io_u->xfer_buflen); |
Jens Axboe | 5451792 | 2007-03-05 10:06:06 +0100 | [diff] [blame] | 1172 | |
| 1173 | if (!td->error) |
| 1174 | td_verror(td, io_u->error, "io_u error"); |
| 1175 | } |
| 1176 | |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1177 | static void io_completed(struct thread_data *td, struct io_u *io_u, |
| 1178 | struct io_completion_data *icd) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1179 | { |
Jens Axboe | dbad30b | 2008-12-05 13:17:16 +0100 | [diff] [blame] | 1180 | /* |
| 1181 | * Older gcc's are too dumb to realize that usec is always used |
| 1182 | * initialized, silence that warning. |
| 1183 | */ |
| 1184 | unsigned long uninitialized_var(usec); |
Jens Axboe | 44f2969 | 2010-03-09 20:09:44 +0100 | [diff] [blame] | 1185 | struct fio_file *f; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1186 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 1187 | dprint_io_u(io_u, "io complete"); |
| 1188 | |
Jens Axboe | 2ecc1b5 | 2009-11-04 20:58:09 +0100 | [diff] [blame] | 1189 | td_io_u_lock(td); |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 1190 | assert(io_u->flags & IO_U_F_FLIGHT); |
Jens Axboe | 38dad62 | 2010-07-20 14:46:00 -0600 | [diff] [blame] | 1191 | io_u->flags &= ~(IO_U_F_FLIGHT | IO_U_F_BUSY_OK); |
Jens Axboe | 2ecc1b5 | 2009-11-04 20:58:09 +0100 | [diff] [blame] | 1192 | td_io_u_unlock(td); |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 1193 | |
Jens Axboe | 5f9099e | 2009-06-16 22:40:26 +0200 | [diff] [blame] | 1194 | if (ddir_sync(io_u->ddir)) { |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 1195 | td->last_was_sync = 1; |
Jens Axboe | 44f2969 | 2010-03-09 20:09:44 +0100 | [diff] [blame] | 1196 | f = io_u->file; |
| 1197 | if (f) { |
| 1198 | f->first_write = -1ULL; |
| 1199 | f->last_write = -1ULL; |
| 1200 | } |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 1201 | return; |
| 1202 | } |
| 1203 | |
| 1204 | td->last_was_sync = 0; |
Jens Axboe | 9e14418 | 2010-06-15 14:25:36 +0200 | [diff] [blame] | 1205 | td->last_ddir = io_u->ddir; |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 1206 | |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 1207 | if (!io_u->error && ddir_rw(io_u->ddir)) { |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1208 | unsigned int bytes = io_u->buflen - io_u->resid; |
Jens Axboe | 1e97cce | 2006-12-05 11:44:16 +0100 | [diff] [blame] | 1209 | const enum fio_ddir idx = io_u->ddir; |
Radha Ramachandran | ba3e4e0 | 2009-12-09 22:31:44 +0100 | [diff] [blame] | 1210 | const enum fio_ddir odx = io_u->ddir ^ 1; |
Jens Axboe | b29ee5b | 2008-09-11 10:17:26 +0200 | [diff] [blame] | 1211 | int ret; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1212 | |
Jens Axboe | b29ee5b | 2008-09-11 10:17:26 +0200 | [diff] [blame] | 1213 | td->io_blocks[idx]++; |
| 1214 | td->io_bytes[idx] += bytes; |
| 1215 | td->this_io_bytes[idx] += bytes; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1216 | |
Jens Axboe | 44f2969 | 2010-03-09 20:09:44 +0100 | [diff] [blame] | 1217 | if (idx == DDIR_WRITE) { |
| 1218 | f = io_u->file; |
| 1219 | if (f) { |
| 1220 | if (f->first_write == -1ULL || |
| 1221 | io_u->offset < f->first_write) |
| 1222 | f->first_write = io_u->offset; |
| 1223 | if (f->last_write == -1ULL || |
| 1224 | ((io_u->offset + bytes) > f->last_write)) |
| 1225 | f->last_write = io_u->offset + bytes; |
| 1226 | } |
| 1227 | } |
| 1228 | |
Jens Axboe | b29ee5b | 2008-09-11 10:17:26 +0200 | [diff] [blame] | 1229 | if (ramp_time_over(td)) { |
Jens Axboe | 40e1a6f | 2009-06-11 10:55:39 +0200 | [diff] [blame] | 1230 | unsigned long uninitialized_var(lusec); |
Jens Axboe | 40e1a6f | 2009-06-11 10:55:39 +0200 | [diff] [blame] | 1231 | |
| 1232 | if (!td->o.disable_clat || !td->o.disable_bw) |
| 1233 | lusec = utime_since(&io_u->issue_time, |
| 1234 | &icd->time); |
Jens Axboe | 02af098 | 2010-06-24 09:59:34 +0200 | [diff] [blame] | 1235 | if (!td->o.disable_lat) { |
| 1236 | unsigned long tusec; |
Jens Axboe | 721938a | 2008-09-10 09:46:16 +0200 | [diff] [blame] | 1237 | |
Jens Axboe | 02af098 | 2010-06-24 09:59:34 +0200 | [diff] [blame] | 1238 | tusec = utime_since(&io_u->start_time, |
| 1239 | &icd->time); |
| 1240 | add_lat_sample(td, idx, tusec, bytes); |
| 1241 | } |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1242 | if (!td->o.disable_clat) { |
Jens Axboe | 01a1caa | 2009-07-10 08:47:57 +0200 | [diff] [blame] | 1243 | add_clat_sample(td, idx, lusec, bytes); |
Jens Axboe | 40e1a6f | 2009-06-11 10:55:39 +0200 | [diff] [blame] | 1244 | io_u_mark_latency(td, lusec); |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1245 | } |
| 1246 | if (!td->o.disable_bw) |
Jens Axboe | 306ddc9 | 2009-05-18 13:08:12 +0200 | [diff] [blame] | 1247 | add_bw_sample(td, idx, bytes, &icd->time); |
Jens Axboe | b23b6a2 | 2009-06-11 22:06:23 +0200 | [diff] [blame] | 1248 | if (__should_check_rate(td, idx)) { |
Radha Ramachandran | ba3e4e0 | 2009-12-09 22:31:44 +0100 | [diff] [blame] | 1249 | td->rate_pending_usleep[idx] = |
| 1250 | ((td->this_io_bytes[idx] * |
| 1251 | td->rate_nsec_cycle[idx]) / 1000 - |
| 1252 | utime_since_now(&td->start)); |
Jens Axboe | b23b6a2 | 2009-06-11 22:06:23 +0200 | [diff] [blame] | 1253 | } |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1254 | if (__should_check_rate(td, idx ^ 1)) |
Radha Ramachandran | ba3e4e0 | 2009-12-09 22:31:44 +0100 | [diff] [blame] | 1255 | td->rate_pending_usleep[odx] = |
| 1256 | ((td->this_io_bytes[odx] * |
| 1257 | td->rate_nsec_cycle[odx]) / 1000 - |
| 1258 | utime_since_now(&td->start)); |
Jens Axboe | 721938a | 2008-09-10 09:46:16 +0200 | [diff] [blame] | 1259 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1260 | |
Jens Axboe | 660a1cb | 2007-04-17 15:37:47 +0200 | [diff] [blame] | 1261 | if (td_write(td) && idx == DDIR_WRITE && |
Shawn Lewis | 8670579 | 2007-11-21 09:35:41 +0100 | [diff] [blame] | 1262 | td->o.do_verify && |
Jens Axboe | 4112840 | 2007-03-27 08:32:48 +0200 | [diff] [blame] | 1263 | td->o.verify != VERIFY_NONE) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1264 | log_io_piece(td, io_u); |
| 1265 | |
Jens Axboe | b29ee5b | 2008-09-11 10:17:26 +0200 | [diff] [blame] | 1266 | icd->bytes_done[idx] += bytes; |
Jens Axboe | 3af6ef3 | 2007-02-18 06:57:43 +0100 | [diff] [blame] | 1267 | |
Jens Axboe | d7762cf | 2007-02-23 12:34:57 +0100 | [diff] [blame] | 1268 | if (io_u->end_io) { |
Jens Axboe | 36690c9 | 2007-03-26 10:23:34 +0200 | [diff] [blame] | 1269 | ret = io_u->end_io(td, io_u); |
Jens Axboe | 3af6ef3 | 2007-02-18 06:57:43 +0100 | [diff] [blame] | 1270 | if (ret && !icd->error) |
| 1271 | icd->error = ret; |
| 1272 | } |
Jens Axboe | ff58fce | 2010-08-25 12:02:08 +0200 | [diff] [blame] | 1273 | } else if (io_u->error) { |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1274 | icd->error = io_u->error; |
Jens Axboe | 5451792 | 2007-03-05 10:06:06 +0100 | [diff] [blame] | 1275 | io_u_log_error(td, io_u); |
| 1276 | } |
Radha Ramachandran | f2bba18 | 2009-06-15 08:40:16 +0200 | [diff] [blame] | 1277 | if (td->o.continue_on_error && icd->error && |
| 1278 | td_non_fatal_error(icd->error)) { |
| 1279 | /* |
| 1280 | * If there is a non_fatal error, then add to the error count |
| 1281 | * and clear all the errors. |
| 1282 | */ |
| 1283 | update_error_count(td, icd->error); |
| 1284 | td_clear_error(td); |
| 1285 | icd->error = 0; |
| 1286 | io_u->error = 0; |
| 1287 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1288 | } |
| 1289 | |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1290 | static void init_icd(struct thread_data *td, struct io_completion_data *icd, |
| 1291 | int nr) |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 1292 | { |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1293 | if (!td->o.disable_clat || !td->o.disable_bw) |
| 1294 | fio_gettime(&icd->time, NULL); |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 1295 | |
Jens Axboe | 3af6ef3 | 2007-02-18 06:57:43 +0100 | [diff] [blame] | 1296 | icd->nr = nr; |
| 1297 | |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 1298 | icd->error = 0; |
| 1299 | icd->bytes_done[0] = icd->bytes_done[1] = 0; |
| 1300 | } |
| 1301 | |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1302 | static void ios_completed(struct thread_data *td, |
| 1303 | struct io_completion_data *icd) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1304 | { |
| 1305 | struct io_u *io_u; |
| 1306 | int i; |
| 1307 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1308 | for (i = 0; i < icd->nr; i++) { |
| 1309 | io_u = td->io_ops->event(td, i); |
| 1310 | |
| 1311 | io_completed(td, io_u, icd); |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 1312 | |
| 1313 | if (!(io_u->flags & IO_U_F_FREE_DEF)) |
| 1314 | put_io_u(td, io_u); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 1315 | } |
| 1316 | } |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1317 | |
Jens Axboe | e7e6cfb | 2007-02-20 10:58:34 +0100 | [diff] [blame] | 1318 | /* |
| 1319 | * Complete a single io_u for the sync engines. |
| 1320 | */ |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1321 | int io_u_sync_complete(struct thread_data *td, struct io_u *io_u, |
| 1322 | unsigned long *bytes) |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1323 | { |
| 1324 | struct io_completion_data icd; |
| 1325 | |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1326 | init_icd(td, &icd, 1); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1327 | io_completed(td, io_u, &icd); |
Jens Axboe | e8462bd | 2009-07-06 12:59:04 +0200 | [diff] [blame] | 1328 | |
| 1329 | if (!(io_u->flags & IO_U_F_FREE_DEF)) |
| 1330 | put_io_u(td, io_u); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1331 | |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1332 | if (icd.error) { |
| 1333 | td_verror(td, icd.error, "io_u_sync_complete"); |
| 1334 | return -1; |
| 1335 | } |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1336 | |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1337 | if (bytes) { |
| 1338 | bytes[0] += icd.bytes_done[0]; |
| 1339 | bytes[1] += icd.bytes_done[1]; |
| 1340 | } |
| 1341 | |
| 1342 | return 0; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1343 | } |
| 1344 | |
Jens Axboe | e7e6cfb | 2007-02-20 10:58:34 +0100 | [diff] [blame] | 1345 | /* |
| 1346 | * Called to complete min_events number of io for the async engines. |
| 1347 | */ |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1348 | int io_u_queued_complete(struct thread_data *td, int min_evts, |
| 1349 | unsigned long *bytes) |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1350 | { |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1351 | struct io_completion_data icd; |
Jens Axboe | 00de55e | 2007-02-20 10:45:57 +0100 | [diff] [blame] | 1352 | struct timespec *tvp = NULL; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1353 | int ret; |
Davide Libenzi | 4d06a33 | 2007-03-22 07:43:50 +0100 | [diff] [blame] | 1354 | struct timespec ts = { .tv_sec = 0, .tv_nsec = 0, }; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1355 | |
Jens Axboe | 4950421 | 2008-06-05 09:03:30 +0200 | [diff] [blame] | 1356 | dprint(FD_IO, "io_u_queued_completed: min=%d\n", min_evts); |
Jens Axboe | b271fe6 | 2008-02-04 10:49:41 +0100 | [diff] [blame] | 1357 | |
Jens Axboe | 4950421 | 2008-06-05 09:03:30 +0200 | [diff] [blame] | 1358 | if (!min_evts) |
Jens Axboe | 00de55e | 2007-02-20 10:45:57 +0100 | [diff] [blame] | 1359 | tvp = &ts; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1360 | |
Jens Axboe | 4950421 | 2008-06-05 09:03:30 +0200 | [diff] [blame] | 1361 | 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] | 1362 | if (ret < 0) { |
Jens Axboe | e1161c3 | 2007-02-22 19:36:48 +0100 | [diff] [blame] | 1363 | td_verror(td, -ret, "td_io_getevents"); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1364 | return ret; |
| 1365 | } else if (!ret) |
| 1366 | return ret; |
| 1367 | |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1368 | init_icd(td, &icd, ret); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1369 | ios_completed(td, &icd); |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1370 | if (icd.error) { |
| 1371 | td_verror(td, icd.error, "io_u_queued_complete"); |
| 1372 | return -1; |
| 1373 | } |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1374 | |
Jens Axboe | 581e714 | 2009-06-09 12:47:16 +0200 | [diff] [blame] | 1375 | if (bytes) { |
| 1376 | bytes[0] += icd.bytes_done[0]; |
| 1377 | bytes[1] += icd.bytes_done[1]; |
| 1378 | } |
| 1379 | |
| 1380 | return 0; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1381 | } |
Jens Axboe | 7e77dd0 | 2007-02-20 10:57:34 +0100 | [diff] [blame] | 1382 | |
| 1383 | /* |
| 1384 | * Call when io_u is really queued, to update the submission latency. |
| 1385 | */ |
| 1386 | void io_u_queued(struct thread_data *td, struct io_u *io_u) |
| 1387 | { |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1388 | if (!td->o.disable_slat) { |
| 1389 | unsigned long slat_time; |
Jens Axboe | 7e77dd0 | 2007-02-20 10:57:34 +0100 | [diff] [blame] | 1390 | |
Jens Axboe | 9520ebb | 2008-10-16 21:03:27 +0200 | [diff] [blame] | 1391 | slat_time = utime_since(&io_u->start_time, &io_u->issue_time); |
Jens Axboe | 29a90dd | 2009-06-10 06:57:47 +0200 | [diff] [blame] | 1392 | 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] | 1393 | } |
Jens Axboe | 7e77dd0 | 2007-02-20 10:57:34 +0100 | [diff] [blame] | 1394 | } |
Jens Axboe | 433afcb | 2007-02-22 10:39:01 +0100 | [diff] [blame] | 1395 | |
Jens Axboe | 5973caf | 2008-05-21 19:52:35 +0200 | [diff] [blame] | 1396 | /* |
| 1397 | * "randomly" fill the buffer contents |
| 1398 | */ |
| 1399 | void io_u_fill_buffer(struct thread_data *td, struct io_u *io_u, |
| 1400 | unsigned int max_bs) |
| 1401 | { |
Jens Axboe | e84b371 | 2011-01-16 08:32:08 -0700 | [diff] [blame] | 1402 | io_u->buf_filled_len = 0; |
| 1403 | |
Jens Axboe | 637ef8d | 2010-06-21 20:39:38 +0200 | [diff] [blame] | 1404 | if (!td->o.zero_buffers) |
| 1405 | fill_random_buf(io_u->buf, max_bs); |
| 1406 | else |
| 1407 | memset(io_u->buf, 0, max_bs); |
Jens Axboe | 5973caf | 2008-05-21 19:52:35 +0200 | [diff] [blame] | 1408 | } |