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 | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 10 | |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 11 | struct io_completion_data { |
| 12 | int nr; /* input */ |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 13 | |
| 14 | int error; /* output */ |
| 15 | unsigned long bytes_done[2]; /* output */ |
| 16 | struct timeval time; /* output */ |
| 17 | }; |
| 18 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 19 | /* |
| 20 | * The ->file_map[] contains a map of blocks we have or have not done io |
| 21 | * to yet. Used to make sure we cover the entire range in a fair fashion. |
| 22 | */ |
Jens Axboe | aec2de2 | 2008-04-24 12:44:42 +0200 | [diff] [blame] | 23 | 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] | 24 | { |
Jens Axboe | aec2de2 | 2008-04-24 12:44:42 +0200 | [diff] [blame] | 25 | unsigned int idx = RAND_MAP_IDX(f, block); |
| 26 | unsigned int bit = RAND_MAP_BIT(f, block); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 27 | |
Jens Axboe | 84422ac | 2008-02-19 20:10:26 +0100 | [diff] [blame] | 28 | dprint(FD_RANDOM, "free: b=%llu, idx=%u, bit=%u\n", block, idx, bit); |
| 29 | |
Jens Axboe | de60566 | 2008-05-31 00:21:12 +0200 | [diff] [blame] | 30 | return (f->file_map[idx] & (1 << bit)) == 0; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 31 | } |
| 32 | |
| 33 | /* |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 34 | * Mark a given offset as used in the map. |
| 35 | */ |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 36 | static void mark_random_map(struct thread_data *td, struct io_u *io_u) |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 37 | { |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 38 | unsigned int min_bs = td->o.rw_min_bs; |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 39 | struct fio_file *f = io_u->file; |
Jens Axboe | a00735e | 2006-11-03 08:58:08 +0100 | [diff] [blame] | 40 | unsigned long long block; |
Jens Axboe | 3e3357b | 2008-06-02 09:53:05 +0200 | [diff] [blame] | 41 | unsigned int blocks, nr_blocks; |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 42 | |
Jens Axboe | b9c5b64 | 2008-02-18 14:13:08 +0100 | [diff] [blame] | 43 | block = (io_u->offset - f->file_offset) / (unsigned long long) min_bs; |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 44 | nr_blocks = (io_u->buflen + min_bs - 1) / min_bs; |
Jens Axboe | 3e3357b | 2008-06-02 09:53:05 +0200 | [diff] [blame] | 45 | blocks = 0; |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 46 | |
Jens Axboe | 3e3357b | 2008-06-02 09:53:05 +0200 | [diff] [blame] | 47 | while (nr_blocks) { |
| 48 | unsigned int this_blocks, mask; |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 49 | unsigned int idx, bit; |
| 50 | |
Jens Axboe | 1e3d53a | 2007-03-22 19:01:48 +0100 | [diff] [blame] | 51 | /* |
| 52 | * If we have a mixed random workload, we may |
| 53 | * encounter blocks we already did IO to. |
| 54 | */ |
Jens Axboe | 8b113b4 | 2008-06-02 10:15:48 +0200 | [diff] [blame] | 55 | if ((td->o.ddir_nr == 1) && !random_map_free(f, block)) { |
| 56 | if (!blocks) |
| 57 | blocks = 1; |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 58 | break; |
Jens Axboe | 8b113b4 | 2008-06-02 10:15:48 +0200 | [diff] [blame] | 59 | } |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 60 | |
Jens Axboe | aec2de2 | 2008-04-24 12:44:42 +0200 | [diff] [blame] | 61 | idx = RAND_MAP_IDX(f, block); |
| 62 | bit = RAND_MAP_BIT(f, block); |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 63 | |
Jens Axboe | 0032bf9 | 2007-02-13 17:39:56 +0100 | [diff] [blame] | 64 | fio_assert(td, idx < f->num_maps); |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 65 | |
Jens Axboe | 3e3357b | 2008-06-02 09:53:05 +0200 | [diff] [blame] | 66 | this_blocks = nr_blocks; |
| 67 | if (this_blocks + bit > BLOCKS_PER_MAP) |
| 68 | this_blocks = BLOCKS_PER_MAP - bit; |
| 69 | |
| 70 | if (this_blocks == BLOCKS_PER_MAP) |
| 71 | mask = -1U; |
| 72 | else |
| 73 | mask = ((1U << this_blocks) - 1) << bit; |
| 74 | |
Jens Axboe | 3e3357b | 2008-06-02 09:53:05 +0200 | [diff] [blame] | 75 | f->file_map[idx] |= mask; |
| 76 | nr_blocks -= this_blocks; |
| 77 | blocks += this_blocks; |
Jens Axboe | c9dd34b | 2008-06-02 10:09:43 +0200 | [diff] [blame] | 78 | block += this_blocks; |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 79 | } |
| 80 | |
Jens Axboe | a00735e | 2006-11-03 08:58:08 +0100 | [diff] [blame] | 81 | if ((blocks * min_bs) < io_u->buflen) |
| 82 | io_u->buflen = blocks * min_bs; |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 83 | } |
| 84 | |
Jens Axboe | 3e3357b | 2008-06-02 09:53:05 +0200 | [diff] [blame] | 85 | static unsigned long long last_block(struct thread_data *td, struct fio_file *f, |
| 86 | enum fio_ddir ddir) |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 87 | { |
| 88 | unsigned long long max_blocks; |
Jens Axboe | d9dd70f | 2008-05-23 12:37:23 +0200 | [diff] [blame] | 89 | unsigned long long max_size; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 90 | |
Jens Axboe | d9dd70f | 2008-05-23 12:37:23 +0200 | [diff] [blame] | 91 | /* |
| 92 | * Hmm, should we make sure that ->io_size <= ->real_file_size? |
| 93 | */ |
| 94 | max_size = f->io_size; |
| 95 | if (max_size > f->real_file_size) |
| 96 | max_size = f->real_file_size; |
| 97 | |
| 98 | max_blocks = max_size / (unsigned long long) td->o.min_bs[ddir]; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 99 | if (!max_blocks) |
| 100 | return 0; |
| 101 | |
Jens Axboe | 67778e8 | 2008-05-15 09:20:08 +0200 | [diff] [blame] | 102 | return max_blocks; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 103 | } |
| 104 | |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 105 | /* |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 106 | * Return the next free block in the map. |
| 107 | */ |
| 108 | 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] | 109 | enum fio_ddir ddir, unsigned long long *b) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 110 | { |
Jens Axboe | 84422ac | 2008-02-19 20:10:26 +0100 | [diff] [blame] | 111 | unsigned long long min_bs = td->o.rw_min_bs; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 112 | int i; |
| 113 | |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 114 | i = f->last_free_lookup; |
| 115 | *b = (i * BLOCKS_PER_MAP); |
Jens Axboe | 84422ac | 2008-02-19 20:10:26 +0100 | [diff] [blame] | 116 | while ((*b) * min_bs < f->real_file_size) { |
Jens Axboe | de60566 | 2008-05-31 00:21:12 +0200 | [diff] [blame] | 117 | if (f->file_map[i] != (unsigned int) -1) { |
Jens Axboe | 697a606 | 2008-05-31 00:04:45 +0200 | [diff] [blame] | 118 | *b += ffz(f->file_map[i]); |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 119 | if (*b > last_block(td, f, ddir)) |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 120 | break; |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 121 | f->last_free_lookup = i; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 122 | return 0; |
| 123 | } |
| 124 | |
| 125 | *b += BLOCKS_PER_MAP; |
| 126 | i++; |
| 127 | } |
| 128 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 129 | dprint(FD_IO, "failed finding a free block\n"); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 130 | return 1; |
| 131 | } |
| 132 | |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 133 | 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] | 134 | enum fio_ddir ddir, unsigned long long *b) |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 135 | { |
Jens Axboe | 84422ac | 2008-02-19 20:10:26 +0100 | [diff] [blame] | 136 | unsigned long long r; |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 137 | int loops = 5; |
| 138 | |
| 139 | do { |
| 140 | r = os_random_long(&td->random_state); |
Jens Axboe | 84422ac | 2008-02-19 20:10:26 +0100 | [diff] [blame] | 141 | dprint(FD_RANDOM, "off rand %llu\n", r); |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 142 | *b = (last_block(td, f, ddir) - 1) |
Jens Axboe | dc873b6 | 2008-06-04 20:13:04 +0200 | [diff] [blame] | 143 | * (r / ((unsigned long long) OS_RAND_MAX + 1.0)); |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 144 | |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 145 | /* |
| 146 | * if we are not maintaining a random map, we are done. |
| 147 | */ |
Jens Axboe | 303032a | 2008-03-26 10:11:10 +0100 | [diff] [blame] | 148 | if (!file_randommap(td, f)) |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 149 | return 0; |
| 150 | |
| 151 | /* |
Jens Axboe | 84422ac | 2008-02-19 20:10:26 +0100 | [diff] [blame] | 152 | * calculate map offset and check if it's free |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 153 | */ |
Jens Axboe | aec2de2 | 2008-04-24 12:44:42 +0200 | [diff] [blame] | 154 | if (random_map_free(f, *b)) |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 155 | return 0; |
| 156 | |
Jens Axboe | 84422ac | 2008-02-19 20:10:26 +0100 | [diff] [blame] | 157 | dprint(FD_RANDOM, "get_next_rand_offset: offset %llu busy\n", |
| 158 | *b); |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 159 | } while (--loops); |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 160 | |
| 161 | /* |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 162 | * we get here, if we didn't suceed in looking up a block. generate |
| 163 | * a random start offset into the filemap, and find the first free |
| 164 | * block from there. |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 165 | */ |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 166 | loops = 10; |
| 167 | do { |
Jens Axboe | dc873b6 | 2008-06-04 20:13:04 +0200 | [diff] [blame] | 168 | f->last_free_lookup = (f->num_maps - 1) * |
| 169 | (r / (OS_RAND_MAX + 1.0)); |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 170 | if (!get_next_free_block(td, f, ddir, b)) |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 171 | return 0; |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 172 | |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 173 | r = os_random_long(&td->random_state); |
| 174 | } while (--loops); |
| 175 | |
| 176 | /* |
| 177 | * that didn't work either, try exhaustive search from the start |
| 178 | */ |
| 179 | f->last_free_lookup = 0; |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 180 | return get_next_free_block(td, f, ddir, b); |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 181 | } |
| 182 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 183 | /* |
| 184 | * For random io, generate a random new block and see if it's used. Repeat |
| 185 | * until we find a free one. For sequential io, just return the end of |
| 186 | * the last io issued. |
| 187 | */ |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 188 | 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] | 189 | { |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 190 | struct fio_file *f = io_u->file; |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 191 | unsigned long long b; |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 192 | enum fio_ddir ddir = io_u->ddir; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 193 | |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 194 | if (td_random(td) && (td->o.ddir_nr && !--td->ddir_nr)) { |
| 195 | td->ddir_nr = td->o.ddir_nr; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 196 | |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 197 | if (get_next_rand_offset(td, f, ddir, &b)) |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 198 | return 1; |
Jens Axboe | 43063a1 | 2007-03-27 20:21:24 +0200 | [diff] [blame] | 199 | } else { |
ljzhang,Yaxin Hu,Jianchao Tang | 0c3d768 | 2007-07-26 10:59:25 +0200 | [diff] [blame] | 200 | if (f->last_pos >= f->real_file_size) { |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 201 | if (!td_random(td) || |
| 202 | get_next_rand_offset(td, f, ddir, &b)) |
ljzhang,Yaxin Hu,Jianchao Tang | 0c3d768 | 2007-07-26 10:59:25 +0200 | [diff] [blame] | 203 | return 1; |
ljzhang,Yaxin Hu,Jianchao Tang | bcdedd0 | 2007-07-27 13:28:26 +0200 | [diff] [blame] | 204 | } else |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 205 | b = (f->last_pos - f->file_offset) / td->o.min_bs[ddir]; |
Jens Axboe | 43063a1 | 2007-03-27 20:21:24 +0200 | [diff] [blame] | 206 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 207 | |
Jens Axboe | 009bd84 | 2008-05-15 10:19:46 +0200 | [diff] [blame] | 208 | io_u->offset = b * td->o.min_bs[ddir]; |
| 209 | if (io_u->offset >= f->io_size) { |
| 210 | dprint(FD_IO, "get_next_offset: offset %llu >= io_size %llu\n", |
| 211 | io_u->offset, f->io_size); |
| 212 | return 1; |
| 213 | } |
| 214 | |
| 215 | io_u->offset += f->file_offset; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 216 | if (io_u->offset >= f->real_file_size) { |
| 217 | dprint(FD_IO, "get_next_offset: offset %llu >= size %llu\n", |
| 218 | io_u->offset, f->real_file_size); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 219 | return 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 220 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 221 | |
| 222 | return 0; |
| 223 | } |
| 224 | |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 225 | static inline int is_power_of_2(unsigned int val) |
| 226 | { |
| 227 | return (val != 0 && ((val & (val - 1)) == 0)); |
| 228 | } |
| 229 | |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 230 | 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] | 231 | { |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 232 | const int ddir = io_u->ddir; |
Jens Axboe | f3f552b | 2008-06-13 10:27:05 +0200 | [diff] [blame] | 233 | unsigned int uninitialized_var(buflen); |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 234 | unsigned int minbs, maxbs; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 235 | long r; |
| 236 | |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 237 | minbs = td->o.min_bs[ddir]; |
| 238 | maxbs = td->o.max_bs[ddir]; |
| 239 | |
| 240 | if (minbs == maxbs) |
| 241 | buflen = minbs; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 242 | else { |
| 243 | r = os_random_long(&td->bsrange_state); |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 244 | if (!td->o.bssplit_nr) { |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 245 | buflen = 1 + (unsigned int) ((double) maxbs * |
| 246 | (r / (OS_RAND_MAX + 1.0))); |
| 247 | if (buflen < minbs) |
| 248 | buflen = minbs; |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 249 | } else { |
Jens Axboe | 564ca97 | 2007-12-14 12:21:19 +0100 | [diff] [blame] | 250 | long perc = 0; |
| 251 | unsigned int i; |
| 252 | |
| 253 | for (i = 0; i < td->o.bssplit_nr; i++) { |
| 254 | struct bssplit *bsp = &td->o.bssplit[i]; |
| 255 | |
| 256 | buflen = bsp->bs; |
| 257 | perc += bsp->perc; |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 258 | if (r <= ((OS_RAND_MAX / 100L) * perc)) |
Jens Axboe | 564ca97 | 2007-12-14 12:21:19 +0100 | [diff] [blame] | 259 | break; |
| 260 | } |
| 261 | } |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 262 | if (!td->o.bs_unaligned && is_power_of_2(minbs)) |
| 263 | buflen = (buflen + minbs - 1) & ~(minbs - 1); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 264 | } |
| 265 | |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 266 | if (io_u->offset + buflen > io_u->file->real_file_size) { |
| 267 | dprint(FD_IO, "lower buflen %u -> %u (ddir=%d)\n", buflen, |
Jens Axboe | f3059de | 2008-06-11 15:37:32 +0200 | [diff] [blame] | 268 | minbs, ddir); |
| 269 | buflen = minbs; |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 270 | } |
Jens Axboe | 6a5e688 | 2007-07-26 10:47:51 +0200 | [diff] [blame] | 271 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 272 | return buflen; |
| 273 | } |
| 274 | |
Jens Axboe | afe24a5 | 2007-03-16 20:27:27 +0100 | [diff] [blame] | 275 | static void set_rwmix_bytes(struct thread_data *td) |
| 276 | { |
Jens Axboe | afe24a5 | 2007-03-16 20:27:27 +0100 | [diff] [blame] | 277 | unsigned int diff; |
| 278 | |
| 279 | /* |
| 280 | * we do time or byte based switch. this is needed because |
| 281 | * buffered writes may issue a lot quicker than they complete, |
| 282 | * whereas reads do not. |
| 283 | */ |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 284 | diff = td->o.rwmix[td->rwmix_ddir ^ 1]; |
Jens Axboe | 04c540d | 2008-05-28 10:35:26 +0200 | [diff] [blame] | 285 | td->rwmix_issues = (td->io_issues[td->rwmix_ddir] * diff) / 100; |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 286 | } |
| 287 | |
| 288 | static inline enum fio_ddir get_rand_ddir(struct thread_data *td) |
| 289 | { |
| 290 | unsigned int v; |
| 291 | long r; |
| 292 | |
| 293 | r = os_random_long(&td->rwmix_state); |
Jens Axboe | dc873b6 | 2008-06-04 20:13:04 +0200 | [diff] [blame] | 294 | v = 1 + (int) (100.0 * (r / (OS_RAND_MAX + 1.0))); |
Jens Axboe | 04c540d | 2008-05-28 10:35:26 +0200 | [diff] [blame] | 295 | if (v <= td->o.rwmix[DDIR_READ]) |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 296 | return DDIR_READ; |
| 297 | |
| 298 | return DDIR_WRITE; |
Jens Axboe | afe24a5 | 2007-03-16 20:27:27 +0100 | [diff] [blame] | 299 | } |
| 300 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 301 | /* |
| 302 | * Return the data direction for the next io_u. If the job is a |
| 303 | * mixed read/write workload, check the rwmix cycle and switch if |
| 304 | * necessary. |
| 305 | */ |
Jens Axboe | 1e97cce | 2006-12-05 11:44:16 +0100 | [diff] [blame] | 306 | static enum fio_ddir get_rw_ddir(struct thread_data *td) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 307 | { |
| 308 | if (td_rw(td)) { |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 309 | /* |
| 310 | * Check if it's time to seed a new data direction. |
| 311 | */ |
Jens Axboe | e492866 | 2008-04-07 09:19:46 +0200 | [diff] [blame] | 312 | if (td->io_issues[td->rwmix_ddir] >= td->rwmix_issues) { |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 313 | unsigned long long max_bytes; |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 314 | enum fio_ddir ddir; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 315 | |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 316 | /* |
| 317 | * Put a top limit on how many bytes we do for |
| 318 | * one data direction, to avoid overflowing the |
| 319 | * ranges too much |
| 320 | */ |
| 321 | ddir = get_rand_ddir(td); |
| 322 | max_bytes = td->this_io_bytes[ddir]; |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 323 | if (max_bytes >= |
| 324 | (td->o.size * td->o.rwmix[ddir] / 100)) { |
Jens Axboe | 6162f52 | 2008-06-04 10:35:25 +0200 | [diff] [blame] | 325 | if (!td->rw_end_set[ddir]) { |
Jens Axboe | 38d77ca | 2007-03-21 14:20:20 +0100 | [diff] [blame] | 326 | td->rw_end_set[ddir] = 1; |
Jens Axboe | 6162f52 | 2008-06-04 10:35:25 +0200 | [diff] [blame] | 327 | fio_gettime(&td->rw_end[ddir], NULL); |
| 328 | } |
Jens Axboe | e492866 | 2008-04-07 09:19:46 +0200 | [diff] [blame] | 329 | |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 330 | ddir ^= 1; |
Jens Axboe | 38d77ca | 2007-03-21 14:20:20 +0100 | [diff] [blame] | 331 | } |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 332 | |
| 333 | if (ddir != td->rwmix_ddir) |
| 334 | set_rwmix_bytes(td); |
| 335 | |
| 336 | td->rwmix_ddir = ddir; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 337 | } |
| 338 | return td->rwmix_ddir; |
| 339 | } else if (td_read(td)) |
| 340 | return DDIR_READ; |
| 341 | else |
| 342 | return DDIR_WRITE; |
| 343 | } |
| 344 | |
Jens Axboe | 60f2c65 | 2008-05-16 12:31:36 +0200 | [diff] [blame] | 345 | static void put_file_log(struct thread_data *td, struct fio_file *f) |
| 346 | { |
| 347 | int ret = put_file(td, f); |
| 348 | |
| 349 | if (ret) |
| 350 | td_verror(td, ret, "file close"); |
| 351 | } |
| 352 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 353 | void put_io_u(struct thread_data *td, struct io_u *io_u) |
| 354 | { |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 355 | assert((io_u->flags & IO_U_F_FREE) == 0); |
| 356 | io_u->flags |= IO_U_F_FREE; |
| 357 | |
Jens Axboe | 60f2c65 | 2008-05-16 12:31:36 +0200 | [diff] [blame] | 358 | if (io_u->file) |
| 359 | put_file_log(td, io_u->file); |
Jens Axboe | 2dbdab7 | 2007-04-26 10:21:15 +0200 | [diff] [blame] | 360 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 361 | io_u->file = NULL; |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 362 | flist_del(&io_u->list); |
| 363 | flist_add(&io_u->list, &td->io_u_freelist); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 364 | td->cur_depth--; |
| 365 | } |
| 366 | |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 367 | void requeue_io_u(struct thread_data *td, struct io_u **io_u) |
| 368 | { |
| 369 | struct io_u *__io_u = *io_u; |
| 370 | |
Jens Axboe | 465221b | 2008-05-30 22:07:49 +0200 | [diff] [blame] | 371 | dprint(FD_IO, "requeue %p\n", __io_u); |
| 372 | |
Jens Axboe | 4d2e0f4 | 2007-02-24 13:31:57 +0100 | [diff] [blame] | 373 | __io_u->flags |= IO_U_F_FREE; |
Jens Axboe | e4f54ad | 2008-02-04 10:56:07 +0100 | [diff] [blame] | 374 | if ((__io_u->flags & IO_U_F_FLIGHT) && (__io_u->ddir != DDIR_SYNC)) |
| 375 | td->io_issues[__io_u->ddir]--; |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 376 | |
Jens Axboe | 4d2e0f4 | 2007-02-24 13:31:57 +0100 | [diff] [blame] | 377 | __io_u->flags &= ~IO_U_F_FLIGHT; |
| 378 | |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 379 | flist_del(&__io_u->list); |
| 380 | flist_add_tail(&__io_u->list, &td->io_u_requeues); |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 381 | td->cur_depth--; |
| 382 | *io_u = NULL; |
| 383 | } |
| 384 | |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 385 | 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] | 386 | { |
Jens Axboe | b4c5e1a | 2007-10-25 18:44:45 +0200 | [diff] [blame] | 387 | if (td->io_ops->flags & FIO_NOIO) |
| 388 | goto out; |
| 389 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 390 | /* |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 391 | * see if it's time to sync |
| 392 | */ |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 393 | if (td->o.fsync_blocks && |
| 394 | !(td->io_issues[DDIR_WRITE] % td->o.fsync_blocks) && |
| 395 | td->io_issues[DDIR_WRITE] && should_fsync(td)) { |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 396 | io_u->ddir = DDIR_SYNC; |
Jens Axboe | c38e946 | 2007-03-27 08:48:48 +0200 | [diff] [blame] | 397 | goto out; |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 398 | } |
| 399 | |
Jens Axboe | a00735e | 2006-11-03 08:58:08 +0100 | [diff] [blame] | 400 | io_u->ddir = get_rw_ddir(td); |
| 401 | |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 402 | /* |
Jens Axboe | 48f5abd | 2007-07-20 13:25:04 +0200 | [diff] [blame] | 403 | * See if it's time to switch to a new zone |
| 404 | */ |
| 405 | if (td->zone_bytes >= td->o.zone_size) { |
| 406 | td->zone_bytes = 0; |
| 407 | io_u->file->last_pos += td->o.zone_skip; |
| 408 | td->io_skip_bytes += td->o.zone_skip; |
| 409 | } |
| 410 | |
| 411 | /* |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 412 | * No log, let the seq/rand engine retrieve the next buflen and |
| 413 | * position. |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 414 | */ |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 415 | if (get_next_offset(td, io_u)) { |
| 416 | dprint(FD_IO, "io_u %p, failed getting offset\n", io_u); |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 417 | return 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 418 | } |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 419 | |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 420 | io_u->buflen = get_next_buflen(td, io_u); |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 421 | if (!io_u->buflen) { |
| 422 | dprint(FD_IO, "io_u %p, failed getting buflen\n", io_u); |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 423 | return 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 424 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 425 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 426 | if (io_u->offset + io_u->buflen > io_u->file->real_file_size) { |
| 427 | dprint(FD_IO, "io_u %p, offset too large\n", io_u); |
Jens Axboe | 4ba6613 | 2008-02-05 10:05:50 +0100 | [diff] [blame] | 428 | dprint(FD_IO, " off=%llu/%lu > %llu\n", io_u->offset, |
| 429 | io_u->buflen, io_u->file->real_file_size); |
Jens Axboe | 6a5e688 | 2007-07-26 10:47:51 +0200 | [diff] [blame] | 430 | return 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 431 | } |
Jens Axboe | 6a5e688 | 2007-07-26 10:47:51 +0200 | [diff] [blame] | 432 | |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 433 | /* |
| 434 | * mark entry before potentially trimming io_u |
| 435 | */ |
Jens Axboe | 303032a | 2008-03-26 10:11:10 +0100 | [diff] [blame] | 436 | if (td_random(td) && file_randommap(td, io_u->file)) |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 437 | mark_random_map(td, io_u); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 438 | |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 439 | /* |
| 440 | * If using a write iolog, store this entry. |
| 441 | */ |
Jens Axboe | c38e946 | 2007-03-27 08:48:48 +0200 | [diff] [blame] | 442 | out: |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 443 | dprint_io_u(io_u, "fill_io_u"); |
Jens Axboe | d9d91e3 | 2008-01-31 13:25:42 +0100 | [diff] [blame] | 444 | td->zone_bytes += io_u->buflen; |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 445 | log_io_u(td, io_u); |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 446 | return 0; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 447 | } |
| 448 | |
Jens Axboe | 838bc70 | 2008-05-22 13:08:23 +0200 | [diff] [blame] | 449 | static void __io_u_mark_map(unsigned int *map, unsigned int nr) |
| 450 | { |
| 451 | int index = 0; |
| 452 | |
| 453 | switch (nr) { |
| 454 | default: |
| 455 | index = 6; |
| 456 | break; |
| 457 | case 33 ... 64: |
| 458 | index = 5; |
| 459 | break; |
| 460 | case 17 ... 32: |
| 461 | index = 4; |
| 462 | break; |
| 463 | case 9 ... 16: |
| 464 | index = 3; |
| 465 | break; |
| 466 | case 5 ... 8: |
| 467 | index = 2; |
| 468 | break; |
| 469 | case 1 ... 4: |
| 470 | index = 1; |
| 471 | case 0: |
| 472 | break; |
| 473 | } |
| 474 | |
| 475 | map[index]++; |
| 476 | } |
| 477 | |
| 478 | void io_u_mark_submit(struct thread_data *td, unsigned int nr) |
| 479 | { |
| 480 | __io_u_mark_map(td->ts.io_u_submit, nr); |
| 481 | td->ts.total_submit++; |
| 482 | } |
| 483 | |
| 484 | void io_u_mark_complete(struct thread_data *td, unsigned int nr) |
| 485 | { |
| 486 | __io_u_mark_map(td->ts.io_u_complete, nr); |
| 487 | td->ts.total_complete++; |
| 488 | } |
| 489 | |
Jens Axboe | d800575 | 2008-05-15 09:49:09 +0200 | [diff] [blame] | 490 | void io_u_mark_depth(struct thread_data *td, unsigned int nr) |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 491 | { |
| 492 | int index = 0; |
| 493 | |
| 494 | switch (td->cur_depth) { |
| 495 | default: |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 496 | index = 6; |
| 497 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 498 | case 32 ... 63: |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 499 | index = 5; |
| 500 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 501 | case 16 ... 31: |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 502 | index = 4; |
| 503 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 504 | case 8 ... 15: |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 505 | index = 3; |
| 506 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 507 | case 4 ... 7: |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 508 | index = 2; |
| 509 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 510 | case 2 ... 3: |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 511 | index = 1; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 512 | case 1: |
| 513 | break; |
| 514 | } |
| 515 | |
Jens Axboe | 3bec7ae | 2008-05-14 21:08:37 +0200 | [diff] [blame] | 516 | td->ts.io_u_map[index] += nr; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 517 | } |
| 518 | |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 519 | static void io_u_mark_lat_usec(struct thread_data *td, unsigned long usec) |
| 520 | { |
| 521 | int index = 0; |
| 522 | |
| 523 | assert(usec < 1000); |
| 524 | |
| 525 | switch (usec) { |
| 526 | case 750 ... 999: |
| 527 | index = 9; |
| 528 | break; |
| 529 | case 500 ... 749: |
| 530 | index = 8; |
| 531 | break; |
| 532 | case 250 ... 499: |
| 533 | index = 7; |
| 534 | break; |
| 535 | case 100 ... 249: |
| 536 | index = 6; |
| 537 | break; |
| 538 | case 50 ... 99: |
| 539 | index = 5; |
| 540 | break; |
| 541 | case 20 ... 49: |
| 542 | index = 4; |
| 543 | break; |
| 544 | case 10 ... 19: |
| 545 | index = 3; |
| 546 | break; |
| 547 | case 4 ... 9: |
| 548 | index = 2; |
| 549 | break; |
| 550 | case 2 ... 3: |
| 551 | index = 1; |
| 552 | case 0 ... 1: |
| 553 | break; |
| 554 | } |
| 555 | |
| 556 | assert(index < FIO_IO_U_LAT_U_NR); |
| 557 | td->ts.io_u_lat_u[index]++; |
| 558 | } |
| 559 | |
| 560 | 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] | 561 | { |
| 562 | int index = 0; |
| 563 | |
| 564 | switch (msec) { |
| 565 | default: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 566 | index = 11; |
| 567 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 568 | case 1000 ... 1999: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 569 | index = 10; |
| 570 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 571 | case 750 ... 999: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 572 | index = 9; |
| 573 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 574 | case 500 ... 749: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 575 | index = 8; |
| 576 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 577 | case 250 ... 499: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 578 | index = 7; |
| 579 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 580 | case 100 ... 249: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 581 | index = 6; |
| 582 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 583 | case 50 ... 99: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 584 | index = 5; |
| 585 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 586 | case 20 ... 49: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 587 | index = 4; |
| 588 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 589 | case 10 ... 19: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 590 | index = 3; |
| 591 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 592 | case 4 ... 9: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 593 | index = 2; |
| 594 | break; |
Jens Axboe | ec11830 | 2007-02-17 04:38:20 +0100 | [diff] [blame] | 595 | case 2 ... 3: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 596 | index = 1; |
Jens Axboe | ec11830 | 2007-02-17 04:38:20 +0100 | [diff] [blame] | 597 | case 0 ... 1: |
| 598 | break; |
| 599 | } |
| 600 | |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 601 | assert(index < FIO_IO_U_LAT_M_NR); |
| 602 | td->ts.io_u_lat_m[index]++; |
| 603 | } |
| 604 | |
| 605 | static void io_u_mark_latency(struct thread_data *td, unsigned long usec) |
| 606 | { |
| 607 | if (usec < 1000) |
| 608 | io_u_mark_lat_usec(td, usec); |
| 609 | else |
| 610 | io_u_mark_lat_msec(td, usec / 1000); |
Jens Axboe | ec11830 | 2007-02-17 04:38:20 +0100 | [diff] [blame] | 611 | } |
| 612 | |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 613 | /* |
| 614 | * Get next file to service by choosing one at random |
| 615 | */ |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 616 | static struct fio_file *get_next_file_rand(struct thread_data *td, int goodf, |
| 617 | int badf) |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 618 | { |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 619 | struct fio_file *f; |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 620 | int fno; |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 621 | |
| 622 | do { |
Jens Axboe | 7c83c08 | 2007-03-01 10:04:15 +0100 | [diff] [blame] | 623 | long r = os_random_long(&td->next_file_state); |
| 624 | |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 625 | fno = (unsigned int) ((double) td->o.nr_files |
Jens Axboe | dc873b6 | 2008-06-04 20:13:04 +0200 | [diff] [blame] | 626 | * (r / (OS_RAND_MAX + 1.0))); |
Jens Axboe | 126d65c | 2008-03-01 18:04:31 +0100 | [diff] [blame] | 627 | f = td->files[fno]; |
Jens Axboe | 059e63c | 2007-03-27 20:34:47 +0200 | [diff] [blame] | 628 | if (f->flags & FIO_FILE_DONE) |
| 629 | continue; |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 630 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 631 | if ((!goodf || (f->flags & goodf)) && !(f->flags & badf)) { |
| 632 | dprint(FD_FILE, "get_next_file_rand: %p\n", f); |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 633 | return f; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 634 | } |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 635 | } while (1); |
| 636 | } |
| 637 | |
| 638 | /* |
| 639 | * Get next file to service by doing round robin between all available ones |
| 640 | */ |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 641 | static struct fio_file *get_next_file_rr(struct thread_data *td, int goodf, |
| 642 | int badf) |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 643 | { |
| 644 | unsigned int old_next_file = td->next_file; |
| 645 | struct fio_file *f; |
| 646 | |
| 647 | do { |
Jens Axboe | 126d65c | 2008-03-01 18:04:31 +0100 | [diff] [blame] | 648 | f = td->files[td->next_file]; |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 649 | |
| 650 | td->next_file++; |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 651 | if (td->next_file >= td->o.nr_files) |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 652 | td->next_file = 0; |
| 653 | |
Jens Axboe | d5ed68e | 2007-03-28 09:33:43 +0200 | [diff] [blame] | 654 | if (f->flags & FIO_FILE_DONE) { |
| 655 | f = NULL; |
Jens Axboe | 059e63c | 2007-03-27 20:34:47 +0200 | [diff] [blame] | 656 | continue; |
Jens Axboe | d5ed68e | 2007-03-28 09:33:43 +0200 | [diff] [blame] | 657 | } |
Jens Axboe | 059e63c | 2007-03-27 20:34:47 +0200 | [diff] [blame] | 658 | |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 659 | if ((!goodf || (f->flags & goodf)) && !(f->flags & badf)) |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 660 | break; |
| 661 | |
| 662 | f = NULL; |
| 663 | } while (td->next_file != old_next_file); |
| 664 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 665 | dprint(FD_FILE, "get_next_file_rr: %p\n", f); |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 666 | return f; |
| 667 | } |
| 668 | |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 669 | static struct fio_file *get_next_file(struct thread_data *td) |
| 670 | { |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 671 | struct fio_file *f; |
| 672 | |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 673 | assert(td->o.nr_files <= td->files_index); |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 674 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 675 | if (!td->nr_open_files || td->nr_done_files >= td->o.nr_files) { |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 676 | dprint(FD_FILE, "get_next_file: nr_open=%d, nr_done=%d," |
| 677 | " nr_files=%d\n", td->nr_open_files, |
| 678 | td->nr_done_files, |
| 679 | td->o.nr_files); |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 680 | return NULL; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 681 | } |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 682 | |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 683 | f = td->file_service_file; |
Jens Axboe | f11bd94 | 2007-03-13 10:16:34 +0100 | [diff] [blame] | 684 | if (f && (f->flags & FIO_FILE_OPEN) && td->file_service_left--) |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 685 | goto out; |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 686 | |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 687 | if (td->o.file_service_type == FIO_FSERVICE_RR) |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 688 | f = get_next_file_rr(td, FIO_FILE_OPEN, FIO_FILE_CLOSING); |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 689 | else |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 690 | f = get_next_file_rand(td, FIO_FILE_OPEN, FIO_FILE_CLOSING); |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 691 | |
| 692 | td->file_service_file = f; |
| 693 | td->file_service_left = td->file_service_nr - 1; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 694 | out: |
| 695 | dprint(FD_FILE, "get_next_file: %p\n", f); |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 696 | return f; |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 697 | } |
| 698 | |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 699 | static struct fio_file *find_next_new_file(struct thread_data *td) |
| 700 | { |
| 701 | struct fio_file *f; |
| 702 | |
Jens Axboe | 1020a13 | 2007-03-29 11:15:06 +0200 | [diff] [blame] | 703 | if (!td->nr_open_files || td->nr_done_files >= td->o.nr_files) |
| 704 | return NULL; |
| 705 | |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 706 | if (td->o.file_service_type == FIO_FSERVICE_RR) |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 707 | f = get_next_file_rr(td, 0, FIO_FILE_OPEN); |
| 708 | else |
| 709 | f = get_next_file_rand(td, 0, FIO_FILE_OPEN); |
| 710 | |
| 711 | return f; |
| 712 | } |
| 713 | |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 714 | static int set_io_u_file(struct thread_data *td, struct io_u *io_u) |
| 715 | { |
| 716 | struct fio_file *f; |
| 717 | |
| 718 | do { |
| 719 | f = get_next_file(td); |
| 720 | if (!f) |
| 721 | return 1; |
| 722 | |
| 723 | set_file: |
| 724 | io_u->file = f; |
| 725 | get_file(f); |
| 726 | |
| 727 | if (!fill_io_u(td, io_u)) |
| 728 | break; |
| 729 | |
| 730 | /* |
Jens Axboe | 009bd84 | 2008-05-15 10:19:46 +0200 | [diff] [blame] | 731 | * optimization to prevent close/open of the same file. This |
| 732 | * way we preserve queueing etc. |
| 733 | */ |
| 734 | if (td->o.nr_files == 1 && td->o.time_based) { |
Jens Axboe | 60f2c65 | 2008-05-16 12:31:36 +0200 | [diff] [blame] | 735 | put_file_log(td, f); |
Jens Axboe | 009bd84 | 2008-05-15 10:19:46 +0200 | [diff] [blame] | 736 | fio_file_reset(f); |
| 737 | goto set_file; |
| 738 | } |
| 739 | |
| 740 | /* |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 741 | * td_io_close() does a put_file() as well, so no need to |
| 742 | * do that here. |
| 743 | */ |
| 744 | io_u->file = NULL; |
| 745 | td_io_close_file(td, f); |
| 746 | f->flags |= FIO_FILE_DONE; |
| 747 | td->nr_done_files++; |
| 748 | |
| 749 | /* |
| 750 | * probably not the right place to do this, but see |
| 751 | * if we need to open a new file |
| 752 | */ |
| 753 | if (td->nr_open_files < td->o.open_files && |
| 754 | td->o.open_files != td->o.nr_files) { |
| 755 | f = find_next_new_file(td); |
| 756 | |
| 757 | if (!f || td_io_open_file(td, f)) |
| 758 | return 1; |
| 759 | |
| 760 | goto set_file; |
| 761 | } |
| 762 | } while (1); |
| 763 | |
| 764 | return 0; |
| 765 | } |
| 766 | |
| 767 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 768 | struct io_u *__get_io_u(struct thread_data *td) |
| 769 | { |
| 770 | struct io_u *io_u = NULL; |
| 771 | |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 772 | if (!flist_empty(&td->io_u_requeues)) |
| 773 | 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] | 774 | else if (!queue_full(td)) { |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 775 | 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] | 776 | |
Jens Axboe | 6040dab | 2006-10-24 19:38:15 +0200 | [diff] [blame] | 777 | io_u->buflen = 0; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 778 | io_u->resid = 0; |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 779 | io_u->file = NULL; |
Jens Axboe | d7762cf | 2007-02-23 12:34:57 +0100 | [diff] [blame] | 780 | io_u->end_io = NULL; |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 781 | } |
| 782 | |
| 783 | if (io_u) { |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 784 | assert(io_u->flags & IO_U_F_FREE); |
| 785 | io_u->flags &= ~IO_U_F_FREE; |
| 786 | |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 787 | io_u->error = 0; |
Jens Axboe | 01743ee | 2008-06-02 12:19:19 +0200 | [diff] [blame] | 788 | flist_del(&io_u->list); |
| 789 | flist_add(&io_u->list, &td->io_u_busylist); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 790 | td->cur_depth++; |
| 791 | } |
| 792 | |
| 793 | return io_u; |
| 794 | } |
| 795 | |
| 796 | /* |
| 797 | * Return an io_u to be processed. Gets a buflen and offset, sets direction, |
| 798 | * etc. The returned io_u is fully ready to be prepped and submitted. |
| 799 | */ |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 800 | struct io_u *get_io_u(struct thread_data *td) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 801 | { |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 802 | struct fio_file *f; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 803 | struct io_u *io_u; |
| 804 | |
| 805 | io_u = __get_io_u(td); |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 806 | if (!io_u) { |
| 807 | dprint(FD_IO, "__get_io_u failed\n"); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 808 | return NULL; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 809 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 810 | |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 811 | /* |
| 812 | * from a requeue, io_u already setup |
| 813 | */ |
| 814 | if (io_u->file) |
Jens Axboe | 77f392b | 2007-02-19 20:13:09 +0100 | [diff] [blame] | 815 | goto out; |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 816 | |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 817 | /* |
| 818 | * If using an iolog, grab next piece if any available. |
| 819 | */ |
| 820 | if (td->o.read_iolog_file) { |
| 821 | if (read_iolog_get(td, io_u)) |
| 822 | goto err_put; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 823 | } else if (set_io_u_file(td, io_u)) { |
| 824 | dprint(FD_IO, "io_u %p, setting file failed\n", io_u); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 825 | goto err_put; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 826 | } |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 827 | |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 828 | f = io_u->file; |
| 829 | assert(f->flags & FIO_FILE_OPEN); |
Jens Axboe | 97af62c | 2007-05-22 11:12:13 +0200 | [diff] [blame] | 830 | |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 831 | if (io_u->ddir != DDIR_SYNC) { |
Jens Axboe | d0656a9 | 2008-02-01 18:33:23 +0100 | [diff] [blame] | 832 | if (!io_u->buflen && !(td->io_ops->flags & FIO_NOIO)) { |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 833 | 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] | 834 | goto err_put; |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 835 | } |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 836 | |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 837 | f->last_pos = io_u->offset + io_u->buflen; |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 838 | |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 839 | if (td->o.verify != VERIFY_NONE) |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 840 | populate_verify_io_u(td, io_u); |
Jens Axboe | e4dad9c | 2008-05-28 10:53:44 +0200 | [diff] [blame] | 841 | else if (td->o.refill_buffers && io_u->ddir == DDIR_WRITE) |
| 842 | io_u_fill_buffer(td, io_u, io_u->xfer_buflen); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 843 | } |
| 844 | |
Jens Axboe | 165faf1 | 2007-02-07 11:30:37 +0100 | [diff] [blame] | 845 | /* |
| 846 | * Set io data pointers. |
| 847 | */ |
Jens Axboe | d460eb3 | 2007-04-16 21:39:33 +0200 | [diff] [blame] | 848 | io_u->endpos = io_u->offset + io_u->buflen; |
Jens Axboe | cec6b55 | 2007-02-06 20:15:38 +0100 | [diff] [blame] | 849 | io_u->xfer_buf = io_u->buf; |
| 850 | io_u->xfer_buflen = io_u->buflen; |
Jens Axboe | 5973caf | 2008-05-21 19:52:35 +0200 | [diff] [blame] | 851 | |
Jens Axboe | 6ac7a33 | 2008-03-01 15:22:32 +0100 | [diff] [blame] | 852 | out: |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 853 | if (!td_io_prep(td, io_u)) { |
| 854 | fio_gettime(&io_u->start_time, NULL); |
| 855 | return io_u; |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 856 | } |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 857 | err_put: |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 858 | dprint(FD_IO, "get_io_u failed\n"); |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 859 | put_io_u(td, io_u); |
| 860 | return NULL; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 861 | } |
| 862 | |
Jens Axboe | 5451792 | 2007-03-05 10:06:06 +0100 | [diff] [blame] | 863 | void io_u_log_error(struct thread_data *td, struct io_u *io_u) |
| 864 | { |
| 865 | const char *msg[] = { "read", "write", "sync" }; |
| 866 | |
| 867 | log_err("fio: io_u error"); |
| 868 | |
| 869 | if (io_u->file) |
| 870 | log_err(" on file %s", io_u->file->file_name); |
| 871 | |
| 872 | log_err(": %s\n", strerror(io_u->error)); |
| 873 | |
Jens Axboe | 5ec10ea | 2008-03-06 15:42:00 +0100 | [diff] [blame] | 874 | log_err(" %s offset=%llu, buflen=%lu\n", msg[io_u->ddir], |
| 875 | io_u->offset, io_u->xfer_buflen); |
Jens Axboe | 5451792 | 2007-03-05 10:06:06 +0100 | [diff] [blame] | 876 | |
| 877 | if (!td->error) |
| 878 | td_verror(td, io_u->error, "io_u error"); |
| 879 | } |
| 880 | |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 881 | static void io_completed(struct thread_data *td, struct io_u *io_u, |
| 882 | struct io_completion_data *icd) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 883 | { |
Jens Axboe | d85f511 | 2007-06-18 09:41:23 +0200 | [diff] [blame] | 884 | unsigned long usec; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 885 | |
Jens Axboe | 2ba1c29 | 2008-02-01 13:16:38 +0100 | [diff] [blame] | 886 | dprint_io_u(io_u, "io complete"); |
| 887 | |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 888 | assert(io_u->flags & IO_U_F_FLIGHT); |
| 889 | io_u->flags &= ~IO_U_F_FLIGHT; |
| 890 | |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 891 | if (io_u->ddir == DDIR_SYNC) { |
| 892 | td->last_was_sync = 1; |
| 893 | return; |
| 894 | } |
| 895 | |
| 896 | td->last_was_sync = 0; |
| 897 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 898 | if (!io_u->error) { |
| 899 | unsigned int bytes = io_u->buflen - io_u->resid; |
Jens Axboe | 1e97cce | 2006-12-05 11:44:16 +0100 | [diff] [blame] | 900 | const enum fio_ddir idx = io_u->ddir; |
Jens Axboe | b29ee5b | 2008-09-11 10:17:26 +0200 | [diff] [blame] | 901 | int ret; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 902 | |
Jens Axboe | b29ee5b | 2008-09-11 10:17:26 +0200 | [diff] [blame] | 903 | td->io_blocks[idx]++; |
| 904 | td->io_bytes[idx] += bytes; |
| 905 | td->this_io_bytes[idx] += bytes; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 906 | |
Jens Axboe | b29ee5b | 2008-09-11 10:17:26 +0200 | [diff] [blame] | 907 | if (ramp_time_over(td)) { |
Jens Axboe | 721938a | 2008-09-10 09:46:16 +0200 | [diff] [blame] | 908 | usec = utime_since(&io_u->issue_time, &icd->time); |
| 909 | |
| 910 | add_clat_sample(td, idx, usec); |
| 911 | add_bw_sample(td, idx, &icd->time); |
| 912 | io_u_mark_latency(td, usec); |
| 913 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 914 | |
Jens Axboe | 660a1cb | 2007-04-17 15:37:47 +0200 | [diff] [blame] | 915 | if (td_write(td) && idx == DDIR_WRITE && |
Shawn Lewis | 8670579 | 2007-11-21 09:35:41 +0100 | [diff] [blame] | 916 | td->o.do_verify && |
Jens Axboe | 4112840 | 2007-03-27 08:32:48 +0200 | [diff] [blame] | 917 | td->o.verify != VERIFY_NONE) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 918 | log_io_piece(td, io_u); |
| 919 | |
Jens Axboe | b29ee5b | 2008-09-11 10:17:26 +0200 | [diff] [blame] | 920 | icd->bytes_done[idx] += bytes; |
Jens Axboe | 3af6ef3 | 2007-02-18 06:57:43 +0100 | [diff] [blame] | 921 | |
Jens Axboe | d7762cf | 2007-02-23 12:34:57 +0100 | [diff] [blame] | 922 | if (io_u->end_io) { |
Jens Axboe | 36690c9 | 2007-03-26 10:23:34 +0200 | [diff] [blame] | 923 | ret = io_u->end_io(td, io_u); |
Jens Axboe | 3af6ef3 | 2007-02-18 06:57:43 +0100 | [diff] [blame] | 924 | if (ret && !icd->error) |
| 925 | icd->error = ret; |
| 926 | } |
Jens Axboe | 5451792 | 2007-03-05 10:06:06 +0100 | [diff] [blame] | 927 | } else { |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 928 | icd->error = io_u->error; |
Jens Axboe | 5451792 | 2007-03-05 10:06:06 +0100 | [diff] [blame] | 929 | io_u_log_error(td, io_u); |
| 930 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 931 | } |
| 932 | |
Jens Axboe | d7762cf | 2007-02-23 12:34:57 +0100 | [diff] [blame] | 933 | static void init_icd(struct io_completion_data *icd, int nr) |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 934 | { |
| 935 | fio_gettime(&icd->time, NULL); |
| 936 | |
Jens Axboe | 3af6ef3 | 2007-02-18 06:57:43 +0100 | [diff] [blame] | 937 | icd->nr = nr; |
| 938 | |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 939 | icd->error = 0; |
| 940 | icd->bytes_done[0] = icd->bytes_done[1] = 0; |
| 941 | } |
| 942 | |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 943 | static void ios_completed(struct thread_data *td, |
| 944 | struct io_completion_data *icd) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 945 | { |
| 946 | struct io_u *io_u; |
| 947 | int i; |
| 948 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 949 | for (i = 0; i < icd->nr; i++) { |
| 950 | io_u = td->io_ops->event(td, i); |
| 951 | |
| 952 | io_completed(td, io_u, icd); |
| 953 | put_io_u(td, io_u); |
| 954 | } |
| 955 | } |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 956 | |
Jens Axboe | e7e6cfb | 2007-02-20 10:58:34 +0100 | [diff] [blame] | 957 | /* |
| 958 | * Complete a single io_u for the sync engines. |
| 959 | */ |
Jens Axboe | d7762cf | 2007-02-23 12:34:57 +0100 | [diff] [blame] | 960 | long io_u_sync_complete(struct thread_data *td, struct io_u *io_u) |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 961 | { |
| 962 | struct io_completion_data icd; |
| 963 | |
Jens Axboe | d7762cf | 2007-02-23 12:34:57 +0100 | [diff] [blame] | 964 | init_icd(&icd, 1); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 965 | io_completed(td, io_u, &icd); |
| 966 | put_io_u(td, io_u); |
| 967 | |
| 968 | if (!icd.error) |
| 969 | return icd.bytes_done[0] + icd.bytes_done[1]; |
| 970 | |
Jens Axboe | 37e974a | 2007-03-02 15:16:45 +0100 | [diff] [blame] | 971 | td_verror(td, icd.error, "io_u_sync_complete"); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 972 | return -1; |
| 973 | } |
| 974 | |
Jens Axboe | e7e6cfb | 2007-02-20 10:58:34 +0100 | [diff] [blame] | 975 | /* |
| 976 | * Called to complete min_events number of io for the async engines. |
| 977 | */ |
Jens Axboe | 4950421 | 2008-06-05 09:03:30 +0200 | [diff] [blame] | 978 | long io_u_queued_complete(struct thread_data *td, int min_evts) |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 979 | { |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 980 | struct io_completion_data icd; |
Jens Axboe | 00de55e | 2007-02-20 10:45:57 +0100 | [diff] [blame] | 981 | struct timespec *tvp = NULL; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 982 | int ret; |
Davide Libenzi | 4d06a33 | 2007-03-22 07:43:50 +0100 | [diff] [blame] | 983 | struct timespec ts = { .tv_sec = 0, .tv_nsec = 0, }; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 984 | |
Jens Axboe | 4950421 | 2008-06-05 09:03:30 +0200 | [diff] [blame] | 985 | dprint(FD_IO, "io_u_queued_completed: min=%d\n", min_evts); |
Jens Axboe | b271fe6 | 2008-02-04 10:49:41 +0100 | [diff] [blame] | 986 | |
Jens Axboe | 4950421 | 2008-06-05 09:03:30 +0200 | [diff] [blame] | 987 | if (!min_evts) |
Jens Axboe | 00de55e | 2007-02-20 10:45:57 +0100 | [diff] [blame] | 988 | tvp = &ts; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 989 | |
Jens Axboe | 4950421 | 2008-06-05 09:03:30 +0200 | [diff] [blame] | 990 | 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] | 991 | if (ret < 0) { |
Jens Axboe | e1161c3 | 2007-02-22 19:36:48 +0100 | [diff] [blame] | 992 | td_verror(td, -ret, "td_io_getevents"); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 993 | return ret; |
| 994 | } else if (!ret) |
| 995 | return ret; |
| 996 | |
Jens Axboe | d7762cf | 2007-02-23 12:34:57 +0100 | [diff] [blame] | 997 | init_icd(&icd, ret); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 998 | ios_completed(td, &icd); |
| 999 | if (!icd.error) |
| 1000 | return icd.bytes_done[0] + icd.bytes_done[1]; |
| 1001 | |
Jens Axboe | 37e974a | 2007-03-02 15:16:45 +0100 | [diff] [blame] | 1002 | td_verror(td, icd.error, "io_u_queued_complete"); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 1003 | return -1; |
| 1004 | } |
Jens Axboe | 7e77dd0 | 2007-02-20 10:57:34 +0100 | [diff] [blame] | 1005 | |
| 1006 | /* |
| 1007 | * Call when io_u is really queued, to update the submission latency. |
| 1008 | */ |
| 1009 | void io_u_queued(struct thread_data *td, struct io_u *io_u) |
| 1010 | { |
| 1011 | unsigned long slat_time; |
| 1012 | |
Jens Axboe | d85f511 | 2007-06-18 09:41:23 +0200 | [diff] [blame] | 1013 | slat_time = utime_since(&io_u->start_time, &io_u->issue_time); |
Jens Axboe | 7e77dd0 | 2007-02-20 10:57:34 +0100 | [diff] [blame] | 1014 | add_slat_sample(td, io_u->ddir, slat_time); |
| 1015 | } |
Jens Axboe | 433afcb | 2007-02-22 10:39:01 +0100 | [diff] [blame] | 1016 | |
Jens Axboe | 5973caf | 2008-05-21 19:52:35 +0200 | [diff] [blame] | 1017 | /* |
| 1018 | * "randomly" fill the buffer contents |
| 1019 | */ |
| 1020 | void io_u_fill_buffer(struct thread_data *td, struct io_u *io_u, |
| 1021 | unsigned int max_bs) |
| 1022 | { |
| 1023 | long *ptr = io_u->buf; |
| 1024 | |
| 1025 | if (!td->o.zero_buffers) { |
| 1026 | while ((void *) ptr - io_u->buf < max_bs) { |
| 1027 | *ptr = rand() * GOLDEN_RATIO_PRIME; |
| 1028 | ptr++; |
| 1029 | } |
| 1030 | } else |
| 1031 | memset(ptr, 0, max_bs); |
| 1032 | } |