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 | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 9 | |
Jens Axboe | 5945b9b | 2007-02-22 20:33:01 +0100 | [diff] [blame] | 10 | /* |
| 11 | * Change this define to play with the timeout handling |
| 12 | */ |
| 13 | #undef FIO_USE_TIMEOUT |
| 14 | |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 15 | struct io_completion_data { |
| 16 | int nr; /* input */ |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 17 | |
| 18 | int error; /* output */ |
| 19 | unsigned long bytes_done[2]; /* output */ |
| 20 | struct timeval time; /* output */ |
| 21 | }; |
| 22 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 23 | /* |
| 24 | * The ->file_map[] contains a map of blocks we have or have not done io |
| 25 | * to yet. Used to make sure we cover the entire range in a fair fashion. |
| 26 | */ |
| 27 | static int random_map_free(struct thread_data *td, struct fio_file *f, |
| 28 | unsigned long long block) |
| 29 | { |
| 30 | unsigned int idx = RAND_MAP_IDX(td, f, block); |
| 31 | unsigned int bit = RAND_MAP_BIT(td, f, block); |
| 32 | |
| 33 | return (f->file_map[idx] & (1UL << bit)) == 0; |
| 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; |
| 44 | unsigned int blocks; |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 45 | unsigned int nr_blocks; |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 46 | |
Jens Axboe | a00735e | 2006-11-03 08:58:08 +0100 | [diff] [blame] | 47 | block = io_u->offset / (unsigned long long) min_bs; |
| 48 | blocks = 0; |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 49 | nr_blocks = (io_u->buflen + min_bs - 1) / min_bs; |
| 50 | |
| 51 | while (blocks < nr_blocks) { |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 52 | unsigned int idx, bit; |
| 53 | |
Jens Axboe | 1e3d53a | 2007-03-22 19:01:48 +0100 | [diff] [blame] | 54 | /* |
| 55 | * If we have a mixed random workload, we may |
| 56 | * encounter blocks we already did IO to. |
| 57 | */ |
ljzhang,Yaxin Hu,Jianchao Tang | b6a4c7d | 2007-07-26 10:51:46 +0200 | [diff] [blame] | 58 | if (!td->o.ddir_nr == 1 && !random_map_free(td, f, block)) |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 59 | break; |
| 60 | |
| 61 | idx = RAND_MAP_IDX(td, f, block); |
| 62 | bit = RAND_MAP_BIT(td, f, block); |
| 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 | |
| 66 | f->file_map[idx] |= (1UL << bit); |
| 67 | block++; |
| 68 | blocks++; |
| 69 | } |
| 70 | |
Jens Axboe | a00735e | 2006-11-03 08:58:08 +0100 | [diff] [blame] | 71 | if ((blocks * min_bs) < io_u->buflen) |
| 72 | io_u->buflen = blocks * min_bs; |
Jens Axboe | df41558 | 2006-10-20 11:41:03 +0200 | [diff] [blame] | 73 | } |
| 74 | |
| 75 | /* |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 76 | * Return the next free block in the map. |
| 77 | */ |
| 78 | static int get_next_free_block(struct thread_data *td, struct fio_file *f, |
| 79 | unsigned long long *b) |
| 80 | { |
| 81 | int i; |
| 82 | |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 83 | i = f->last_free_lookup; |
| 84 | *b = (i * BLOCKS_PER_MAP); |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 85 | while ((*b) * td->o.rw_min_bs < f->real_file_size) { |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 86 | if (f->file_map[i] != -1UL) { |
Jens Axboe | b12ebc6 | 2007-05-21 11:42:33 +0200 | [diff] [blame] | 87 | *b += fio_ffz(f->file_map[i]); |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 88 | f->last_free_lookup = i; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 89 | return 0; |
| 90 | } |
| 91 | |
| 92 | *b += BLOCKS_PER_MAP; |
| 93 | i++; |
| 94 | } |
| 95 | |
| 96 | return 1; |
| 97 | } |
| 98 | |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 99 | static int get_next_rand_offset(struct thread_data *td, struct fio_file *f, |
| 100 | int ddir, unsigned long long *b) |
| 101 | { |
Jens Axboe | 7bb48f8 | 2007-03-27 15:30:28 +0200 | [diff] [blame] | 102 | unsigned long long max_blocks = f->io_size / td->o.min_bs[ddir]; |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 103 | unsigned long long r, rb; |
| 104 | int loops = 5; |
| 105 | |
| 106 | do { |
| 107 | r = os_random_long(&td->random_state); |
| 108 | if (!max_blocks) |
| 109 | *b = 0; |
| 110 | else |
| 111 | *b = ((max_blocks - 1) * r / (unsigned long long) (RAND_MAX+1.0)); |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 112 | /* |
| 113 | * if we are not maintaining a random map, we are done. |
| 114 | */ |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 115 | if (td->o.norandommap) |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 116 | return 0; |
| 117 | |
| 118 | /* |
| 119 | * calculate map offset and chec if it's free |
| 120 | */ |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 121 | rb = *b + (f->file_offset / td->o.min_bs[ddir]); |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 122 | if (random_map_free(td, f, rb)) |
| 123 | return 0; |
| 124 | |
| 125 | } while (--loops); |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 126 | |
| 127 | /* |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 128 | * we get here, if we didn't suceed in looking up a block. generate |
| 129 | * a random start offset into the filemap, and find the first free |
| 130 | * block from there. |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 131 | */ |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 132 | loops = 10; |
| 133 | do { |
| 134 | f->last_free_lookup = (f->num_maps - 1) * (r / (RAND_MAX+1.0)); |
| 135 | if (!get_next_free_block(td, f, b)) |
| 136 | return 0; |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 137 | |
Jens Axboe | 43c63a7 | 2007-05-21 13:23:30 +0200 | [diff] [blame] | 138 | r = os_random_long(&td->random_state); |
| 139 | } while (--loops); |
| 140 | |
| 141 | /* |
| 142 | * that didn't work either, try exhaustive search from the start |
| 143 | */ |
| 144 | f->last_free_lookup = 0; |
| 145 | return get_next_free_block(td, f, b); |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 146 | } |
| 147 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 148 | /* |
| 149 | * For random io, generate a random new block and see if it's used. Repeat |
| 150 | * until we find a free one. For sequential io, just return the end of |
| 151 | * the last io issued. |
| 152 | */ |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 153 | 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] | 154 | { |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 155 | struct fio_file *f = io_u->file; |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 156 | const int ddir = io_u->ddir; |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 157 | unsigned long long b; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 158 | |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 159 | if (td_random(td) && (td->o.ddir_nr && !--td->ddir_nr)) { |
| 160 | td->ddir_nr = td->o.ddir_nr; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 161 | |
Jens Axboe | ec4015d | 2007-03-23 08:04:27 +0100 | [diff] [blame] | 162 | if (get_next_rand_offset(td, f, ddir, &b)) |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 163 | return 1; |
Jens Axboe | 43063a1 | 2007-03-27 20:21:24 +0200 | [diff] [blame] | 164 | } else { |
ljzhang,Yaxin Hu,Jianchao Tang | 0c3d768 | 2007-07-26 10:59:25 +0200 | [diff] [blame] | 165 | if (f->last_pos >= f->real_file_size) { |
| 166 | if (!td_random(td) || get_next_rand_offset(td, f, ddir, &b)) |
| 167 | return 1; |
ljzhang,Yaxin Hu,Jianchao Tang | bcdedd0 | 2007-07-27 13:28:26 +0200 | [diff] [blame] | 168 | } else |
| 169 | b = (f->last_pos - f->file_offset) / td->o.min_bs[ddir]; |
Jens Axboe | 43063a1 | 2007-03-27 20:21:24 +0200 | [diff] [blame] | 170 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 171 | |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 172 | io_u->offset = (b * td->o.min_bs[ddir]) + f->file_offset; |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 173 | if (io_u->offset >= f->real_file_size) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 174 | return 1; |
| 175 | |
| 176 | return 0; |
| 177 | } |
| 178 | |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 179 | 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] | 180 | { |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 181 | const int ddir = io_u->ddir; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 182 | unsigned int buflen; |
| 183 | long r; |
| 184 | |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 185 | if (td->o.min_bs[ddir] == td->o.max_bs[ddir]) |
| 186 | buflen = td->o.min_bs[ddir]; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 187 | else { |
| 188 | r = os_random_long(&td->bsrange_state); |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 189 | buflen = (unsigned int) (1 + (double) (td->o.max_bs[ddir] - 1) * r / (RAND_MAX + 1.0)); |
| 190 | if (!td->o.bs_unaligned) |
| 191 | buflen = (buflen + td->o.min_bs[ddir] - 1) & ~(td->o.min_bs[ddir] - 1); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 192 | } |
| 193 | |
Jens Axboe | 6a5e688 | 2007-07-26 10:47:51 +0200 | [diff] [blame] | 194 | if (io_u->offset + buflen > io_u->file->real_file_size) |
| 195 | buflen = td->o.min_bs[ddir]; |
| 196 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 197 | return buflen; |
| 198 | } |
| 199 | |
Jens Axboe | afe24a5 | 2007-03-16 20:27:27 +0100 | [diff] [blame] | 200 | static void set_rwmix_bytes(struct thread_data *td) |
| 201 | { |
| 202 | unsigned long long rbytes; |
| 203 | unsigned int diff; |
| 204 | |
| 205 | /* |
| 206 | * we do time or byte based switch. this is needed because |
| 207 | * buffered writes may issue a lot quicker than they complete, |
| 208 | * whereas reads do not. |
| 209 | */ |
| 210 | rbytes = td->io_bytes[td->rwmix_ddir] - td->rwmix_bytes; |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 211 | diff = td->o.rwmix[td->rwmix_ddir ^ 1]; |
Jens Axboe | afe24a5 | 2007-03-16 20:27:27 +0100 | [diff] [blame] | 212 | |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 213 | td->rwmix_bytes = td->io_bytes[td->rwmix_ddir] + (rbytes * ((100 - diff)) / diff); |
| 214 | } |
| 215 | |
| 216 | static inline enum fio_ddir get_rand_ddir(struct thread_data *td) |
| 217 | { |
| 218 | unsigned int v; |
| 219 | long r; |
| 220 | |
| 221 | r = os_random_long(&td->rwmix_state); |
| 222 | v = 1 + (int) (100.0 * (r / (RAND_MAX + 1.0))); |
| 223 | if (v < td->o.rwmix[DDIR_READ]) |
| 224 | return DDIR_READ; |
| 225 | |
| 226 | return DDIR_WRITE; |
Jens Axboe | afe24a5 | 2007-03-16 20:27:27 +0100 | [diff] [blame] | 227 | } |
| 228 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 229 | /* |
| 230 | * Return the data direction for the next io_u. If the job is a |
| 231 | * mixed read/write workload, check the rwmix cycle and switch if |
| 232 | * necessary. |
| 233 | */ |
Jens Axboe | 1e97cce | 2006-12-05 11:44:16 +0100 | [diff] [blame] | 234 | static enum fio_ddir get_rw_ddir(struct thread_data *td) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 235 | { |
| 236 | if (td_rw(td)) { |
| 237 | struct timeval now; |
| 238 | unsigned long elapsed; |
Jens Axboe | afe24a5 | 2007-03-16 20:27:27 +0100 | [diff] [blame] | 239 | unsigned int cycle; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 240 | |
Jens Axboe | 02bcaa8 | 2006-11-24 10:42:00 +0100 | [diff] [blame] | 241 | fio_gettime(&now, NULL); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 242 | elapsed = mtime_since_now(&td->rwmix_switch); |
| 243 | |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 244 | /* |
| 245 | * if this is the first cycle, make it shorter |
| 246 | */ |
Jens Axboe | afe24a5 | 2007-03-16 20:27:27 +0100 | [diff] [blame] | 247 | cycle = td->o.rwmixcycle; |
| 248 | if (!td->rwmix_bytes) |
| 249 | cycle /= 10; |
| 250 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 251 | /* |
| 252 | * Check if it's time to seed a new data direction. |
| 253 | */ |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 254 | if (elapsed >= cycle || |
Jens Axboe | afe24a5 | 2007-03-16 20:27:27 +0100 | [diff] [blame] | 255 | td->io_bytes[td->rwmix_ddir] >= td->rwmix_bytes) { |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 256 | unsigned long long max_bytes; |
| 257 | enum fio_ddir ddir; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 258 | |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 259 | /* |
| 260 | * Put a top limit on how many bytes we do for |
| 261 | * one data direction, to avoid overflowing the |
| 262 | * ranges too much |
| 263 | */ |
| 264 | ddir = get_rand_ddir(td); |
| 265 | max_bytes = td->this_io_bytes[ddir]; |
Jens Axboe | 7bb48f8 | 2007-03-27 15:30:28 +0200 | [diff] [blame] | 266 | if (max_bytes >= (td->o.size * td->o.rwmix[ddir] / 100)) { |
Jens Axboe | 38d77ca | 2007-03-21 14:20:20 +0100 | [diff] [blame] | 267 | if (!td->rw_end_set[ddir]) { |
| 268 | td->rw_end_set[ddir] = 1; |
| 269 | memcpy(&td->rw_end[ddir], &now, sizeof(now)); |
| 270 | } |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 271 | ddir ^= 1; |
Jens Axboe | 38d77ca | 2007-03-21 14:20:20 +0100 | [diff] [blame] | 272 | } |
Jens Axboe | e47f799 | 2007-03-21 14:05:39 +0100 | [diff] [blame] | 273 | |
| 274 | if (ddir != td->rwmix_ddir) |
| 275 | set_rwmix_bytes(td); |
| 276 | |
| 277 | td->rwmix_ddir = ddir; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 278 | memcpy(&td->rwmix_switch, &now, sizeof(now)); |
| 279 | } |
| 280 | return td->rwmix_ddir; |
| 281 | } else if (td_read(td)) |
| 282 | return DDIR_READ; |
| 283 | else |
| 284 | return DDIR_WRITE; |
| 285 | } |
| 286 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 287 | void put_io_u(struct thread_data *td, struct io_u *io_u) |
| 288 | { |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 289 | assert((io_u->flags & IO_U_F_FREE) == 0); |
| 290 | io_u->flags |= IO_U_F_FREE; |
| 291 | |
Jens Axboe | 2dbdab7 | 2007-04-26 10:21:15 +0200 | [diff] [blame] | 292 | if (io_u->file) |
| 293 | put_file(td, io_u->file); |
| 294 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 295 | io_u->file = NULL; |
| 296 | list_del(&io_u->list); |
| 297 | list_add(&io_u->list, &td->io_u_freelist); |
| 298 | td->cur_depth--; |
| 299 | } |
| 300 | |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 301 | void requeue_io_u(struct thread_data *td, struct io_u **io_u) |
| 302 | { |
| 303 | struct io_u *__io_u = *io_u; |
| 304 | |
Jens Axboe | 4d2e0f4 | 2007-02-24 13:31:57 +0100 | [diff] [blame] | 305 | __io_u->flags |= IO_U_F_FREE; |
| 306 | __io_u->flags &= ~IO_U_F_FLIGHT; |
| 307 | |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 308 | list_del(&__io_u->list); |
| 309 | list_add_tail(&__io_u->list, &td->io_u_requeues); |
| 310 | td->cur_depth--; |
| 311 | *io_u = NULL; |
| 312 | } |
| 313 | |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 314 | 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] | 315 | { |
| 316 | /* |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 317 | * see if it's time to sync |
| 318 | */ |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 319 | if (td->o.fsync_blocks && |
| 320 | !(td->io_issues[DDIR_WRITE] % td->o.fsync_blocks) && |
| 321 | td->io_issues[DDIR_WRITE] && should_fsync(td)) { |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 322 | io_u->ddir = DDIR_SYNC; |
Jens Axboe | c38e946 | 2007-03-27 08:48:48 +0200 | [diff] [blame] | 323 | goto out; |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 324 | } |
| 325 | |
Jens Axboe | a00735e | 2006-11-03 08:58:08 +0100 | [diff] [blame] | 326 | io_u->ddir = get_rw_ddir(td); |
| 327 | |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 328 | /* |
Jens Axboe | 48f5abd | 2007-07-20 13:25:04 +0200 | [diff] [blame] | 329 | * See if it's time to switch to a new zone |
| 330 | */ |
| 331 | if (td->zone_bytes >= td->o.zone_size) { |
| 332 | td->zone_bytes = 0; |
| 333 | io_u->file->last_pos += td->o.zone_skip; |
| 334 | td->io_skip_bytes += td->o.zone_skip; |
| 335 | } |
| 336 | |
| 337 | /* |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 338 | * No log, let the seq/rand engine retrieve the next buflen and |
| 339 | * position. |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 340 | */ |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 341 | if (get_next_offset(td, io_u)) |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 342 | return 1; |
Jens Axboe | c685b5b | 2007-02-10 20:02:28 +0100 | [diff] [blame] | 343 | |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 344 | io_u->buflen = get_next_buflen(td, io_u); |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 345 | if (!io_u->buflen) |
| 346 | return 1; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 347 | |
Jens Axboe | 6a5e688 | 2007-07-26 10:47:51 +0200 | [diff] [blame] | 348 | if (io_u->offset + io_u->buflen > io_u->file->real_file_size) |
| 349 | return 1; |
| 350 | |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 351 | /* |
| 352 | * mark entry before potentially trimming io_u |
| 353 | */ |
Jens Axboe | 8fd15a9 | 2007-03-27 08:46:33 +0200 | [diff] [blame] | 354 | if (td_random(td) && !td->o.norandommap) |
Jens Axboe | 9bf2061 | 2007-03-01 09:33:57 +0100 | [diff] [blame] | 355 | mark_random_map(td, io_u); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 356 | |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 357 | /* |
| 358 | * If using a write iolog, store this entry. |
| 359 | */ |
Jens Axboe | c38e946 | 2007-03-27 08:48:48 +0200 | [diff] [blame] | 360 | out: |
Jens Axboe | f29b25a | 2007-07-23 08:56:43 +0200 | [diff] [blame] | 361 | log_io_u(td, io_u); |
Jens Axboe | bca4ed4 | 2007-02-12 05:13:23 +0100 | [diff] [blame] | 362 | return 0; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 363 | } |
| 364 | |
Jens Axboe | b360506 | 2007-03-12 14:19:47 +0100 | [diff] [blame] | 365 | void io_u_mark_depth(struct thread_data *td, struct io_u *io_u) |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 366 | { |
| 367 | int index = 0; |
| 368 | |
Jens Axboe | b360506 | 2007-03-12 14:19:47 +0100 | [diff] [blame] | 369 | if (io_u->ddir == DDIR_SYNC) |
| 370 | return; |
| 371 | |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 372 | switch (td->cur_depth) { |
| 373 | default: |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 374 | index = 6; |
| 375 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 376 | case 32 ... 63: |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 377 | index = 5; |
| 378 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 379 | case 16 ... 31: |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 380 | index = 4; |
| 381 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 382 | case 8 ... 15: |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 383 | index = 3; |
| 384 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 385 | case 4 ... 7: |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 386 | index = 2; |
| 387 | break; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 388 | case 2 ... 3: |
Jens Axboe | a783e61 | 2007-06-19 09:50:28 +0200 | [diff] [blame] | 389 | index = 1; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 390 | case 1: |
| 391 | break; |
| 392 | } |
| 393 | |
Jens Axboe | 756867b | 2007-03-06 15:19:24 +0100 | [diff] [blame] | 394 | td->ts.io_u_map[index]++; |
Jens Axboe | b360506 | 2007-03-12 14:19:47 +0100 | [diff] [blame] | 395 | td->ts.total_io_u[io_u->ddir]++; |
Jens Axboe | 71619dc | 2007-01-13 23:56:33 +0100 | [diff] [blame] | 396 | } |
| 397 | |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 398 | static void io_u_mark_lat_usec(struct thread_data *td, unsigned long usec) |
| 399 | { |
| 400 | int index = 0; |
| 401 | |
| 402 | assert(usec < 1000); |
| 403 | |
| 404 | switch (usec) { |
| 405 | case 750 ... 999: |
| 406 | index = 9; |
| 407 | break; |
| 408 | case 500 ... 749: |
| 409 | index = 8; |
| 410 | break; |
| 411 | case 250 ... 499: |
| 412 | index = 7; |
| 413 | break; |
| 414 | case 100 ... 249: |
| 415 | index = 6; |
| 416 | break; |
| 417 | case 50 ... 99: |
| 418 | index = 5; |
| 419 | break; |
| 420 | case 20 ... 49: |
| 421 | index = 4; |
| 422 | break; |
| 423 | case 10 ... 19: |
| 424 | index = 3; |
| 425 | break; |
| 426 | case 4 ... 9: |
| 427 | index = 2; |
| 428 | break; |
| 429 | case 2 ... 3: |
| 430 | index = 1; |
| 431 | case 0 ... 1: |
| 432 | break; |
| 433 | } |
| 434 | |
| 435 | assert(index < FIO_IO_U_LAT_U_NR); |
| 436 | td->ts.io_u_lat_u[index]++; |
| 437 | } |
| 438 | |
| 439 | 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] | 440 | { |
| 441 | int index = 0; |
| 442 | |
| 443 | switch (msec) { |
| 444 | default: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 445 | index = 11; |
| 446 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 447 | case 1000 ... 1999: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 448 | index = 10; |
| 449 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 450 | case 750 ... 999: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 451 | index = 9; |
| 452 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 453 | case 500 ... 749: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 454 | index = 8; |
| 455 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 456 | case 250 ... 499: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 457 | index = 7; |
| 458 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 459 | case 100 ... 249: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 460 | index = 6; |
| 461 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 462 | case 50 ... 99: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 463 | index = 5; |
| 464 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 465 | case 20 ... 49: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 466 | index = 4; |
| 467 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 468 | case 10 ... 19: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 469 | index = 3; |
| 470 | break; |
Jens Axboe | 8abdce6 | 2007-02-21 10:22:55 +0100 | [diff] [blame] | 471 | case 4 ... 9: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 472 | index = 2; |
| 473 | break; |
Jens Axboe | ec11830 | 2007-02-17 04:38:20 +0100 | [diff] [blame] | 474 | case 2 ... 3: |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 475 | index = 1; |
Jens Axboe | ec11830 | 2007-02-17 04:38:20 +0100 | [diff] [blame] | 476 | case 0 ... 1: |
| 477 | break; |
| 478 | } |
| 479 | |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 480 | assert(index < FIO_IO_U_LAT_M_NR); |
| 481 | td->ts.io_u_lat_m[index]++; |
| 482 | } |
| 483 | |
| 484 | static void io_u_mark_latency(struct thread_data *td, unsigned long usec) |
| 485 | { |
| 486 | if (usec < 1000) |
| 487 | io_u_mark_lat_usec(td, usec); |
| 488 | else |
| 489 | io_u_mark_lat_msec(td, usec / 1000); |
Jens Axboe | ec11830 | 2007-02-17 04:38:20 +0100 | [diff] [blame] | 490 | } |
| 491 | |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 492 | /* |
| 493 | * Get next file to service by choosing one at random |
| 494 | */ |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 495 | static struct fio_file *get_next_file_rand(struct thread_data *td, int goodf, |
| 496 | int badf) |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 497 | { |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 498 | struct fio_file *f; |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 499 | int fno; |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 500 | |
| 501 | do { |
Jens Axboe | 7c83c08 | 2007-03-01 10:04:15 +0100 | [diff] [blame] | 502 | long r = os_random_long(&td->next_file_state); |
| 503 | |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 504 | fno = (unsigned int) ((double) td->o.nr_files * (r / (RAND_MAX + 1.0))); |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 505 | f = &td->files[fno]; |
Jens Axboe | 059e63c | 2007-03-27 20:34:47 +0200 | [diff] [blame] | 506 | if (f->flags & FIO_FILE_DONE) |
| 507 | continue; |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 508 | |
| 509 | if ((!goodf || (f->flags & goodf)) && !(f->flags & badf)) |
Jens Axboe | 0aabe16 | 2007-02-23 08:45:55 +0100 | [diff] [blame] | 510 | return f; |
| 511 | } while (1); |
| 512 | } |
| 513 | |
| 514 | /* |
| 515 | * Get next file to service by doing round robin between all available ones |
| 516 | */ |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 517 | static struct fio_file *get_next_file_rr(struct thread_data *td, int goodf, |
| 518 | int badf) |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 519 | { |
| 520 | unsigned int old_next_file = td->next_file; |
| 521 | struct fio_file *f; |
| 522 | |
| 523 | do { |
| 524 | f = &td->files[td->next_file]; |
| 525 | |
| 526 | td->next_file++; |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 527 | if (td->next_file >= td->o.nr_files) |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 528 | td->next_file = 0; |
| 529 | |
Jens Axboe | d5ed68e | 2007-03-28 09:33:43 +0200 | [diff] [blame] | 530 | if (f->flags & FIO_FILE_DONE) { |
| 531 | f = NULL; |
Jens Axboe | 059e63c | 2007-03-27 20:34:47 +0200 | [diff] [blame] | 532 | continue; |
Jens Axboe | d5ed68e | 2007-03-28 09:33:43 +0200 | [diff] [blame] | 533 | } |
Jens Axboe | 059e63c | 2007-03-27 20:34:47 +0200 | [diff] [blame] | 534 | |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 535 | if ((!goodf || (f->flags & goodf)) && !(f->flags & badf)) |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 536 | break; |
| 537 | |
| 538 | f = NULL; |
| 539 | } while (td->next_file != old_next_file); |
| 540 | |
| 541 | return f; |
| 542 | } |
| 543 | |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 544 | static struct fio_file *get_next_file(struct thread_data *td) |
| 545 | { |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 546 | struct fio_file *f; |
| 547 | |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 548 | assert(td->o.nr_files <= td->files_index); |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 549 | |
Jens Axboe | 1020a13 | 2007-03-29 11:15:06 +0200 | [diff] [blame] | 550 | if (!td->nr_open_files || td->nr_done_files >= td->o.nr_files) |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 551 | return NULL; |
| 552 | |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 553 | f = td->file_service_file; |
Jens Axboe | f11bd94 | 2007-03-13 10:16:34 +0100 | [diff] [blame] | 554 | if (f && (f->flags & FIO_FILE_OPEN) && td->file_service_left--) |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 555 | return f; |
| 556 | |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 557 | if (td->o.file_service_type == FIO_FSERVICE_RR) |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 558 | f = get_next_file_rr(td, FIO_FILE_OPEN, FIO_FILE_CLOSING); |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 559 | else |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 560 | f = get_next_file_rand(td, FIO_FILE_OPEN, FIO_FILE_CLOSING); |
Jens Axboe | 1907dbc | 2007-03-12 11:44:28 +0100 | [diff] [blame] | 561 | |
| 562 | td->file_service_file = f; |
| 563 | td->file_service_left = td->file_service_nr - 1; |
| 564 | return f; |
Jens Axboe | bdb4e2e | 2007-03-01 09:54:57 +0100 | [diff] [blame] | 565 | } |
| 566 | |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 567 | static struct fio_file *find_next_new_file(struct thread_data *td) |
| 568 | { |
| 569 | struct fio_file *f; |
| 570 | |
Jens Axboe | 1020a13 | 2007-03-29 11:15:06 +0200 | [diff] [blame] | 571 | if (!td->nr_open_files || td->nr_done_files >= td->o.nr_files) |
| 572 | return NULL; |
| 573 | |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 574 | if (td->o.file_service_type == FIO_FSERVICE_RR) |
Jens Axboe | 1c17818 | 2007-03-13 13:25:18 +0100 | [diff] [blame] | 575 | f = get_next_file_rr(td, 0, FIO_FILE_OPEN); |
| 576 | else |
| 577 | f = get_next_file_rand(td, 0, FIO_FILE_OPEN); |
| 578 | |
| 579 | return f; |
| 580 | } |
| 581 | |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 582 | static int set_io_u_file(struct thread_data *td, struct io_u *io_u) |
| 583 | { |
| 584 | struct fio_file *f; |
| 585 | |
| 586 | do { |
| 587 | f = get_next_file(td); |
| 588 | if (!f) |
| 589 | return 1; |
| 590 | |
| 591 | set_file: |
| 592 | io_u->file = f; |
| 593 | get_file(f); |
| 594 | |
| 595 | if (!fill_io_u(td, io_u)) |
| 596 | break; |
| 597 | |
| 598 | /* |
| 599 | * td_io_close() does a put_file() as well, so no need to |
| 600 | * do that here. |
| 601 | */ |
| 602 | io_u->file = NULL; |
| 603 | td_io_close_file(td, f); |
| 604 | f->flags |= FIO_FILE_DONE; |
| 605 | td->nr_done_files++; |
| 606 | |
| 607 | /* |
| 608 | * probably not the right place to do this, but see |
| 609 | * if we need to open a new file |
| 610 | */ |
| 611 | if (td->nr_open_files < td->o.open_files && |
| 612 | td->o.open_files != td->o.nr_files) { |
| 613 | f = find_next_new_file(td); |
| 614 | |
| 615 | if (!f || td_io_open_file(td, f)) |
| 616 | return 1; |
| 617 | |
| 618 | goto set_file; |
| 619 | } |
| 620 | } while (1); |
| 621 | |
| 622 | return 0; |
| 623 | } |
| 624 | |
| 625 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 626 | struct io_u *__get_io_u(struct thread_data *td) |
| 627 | { |
| 628 | struct io_u *io_u = NULL; |
| 629 | |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 630 | if (!list_empty(&td->io_u_requeues)) |
| 631 | io_u = list_entry(td->io_u_requeues.next, struct io_u, list); |
| 632 | else if (!queue_full(td)) { |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 633 | io_u = list_entry(td->io_u_freelist.next, struct io_u, list); |
| 634 | |
Jens Axboe | 6040dab | 2006-10-24 19:38:15 +0200 | [diff] [blame] | 635 | io_u->buflen = 0; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 636 | io_u->resid = 0; |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 637 | io_u->file = NULL; |
Jens Axboe | d7762cf | 2007-02-23 12:34:57 +0100 | [diff] [blame] | 638 | io_u->end_io = NULL; |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 639 | } |
| 640 | |
| 641 | if (io_u) { |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 642 | assert(io_u->flags & IO_U_F_FREE); |
| 643 | io_u->flags &= ~IO_U_F_FREE; |
| 644 | |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 645 | io_u->error = 0; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 646 | list_del(&io_u->list); |
| 647 | list_add(&io_u->list, &td->io_u_busylist); |
| 648 | td->cur_depth++; |
| 649 | } |
| 650 | |
| 651 | return io_u; |
| 652 | } |
| 653 | |
| 654 | /* |
| 655 | * Return an io_u to be processed. Gets a buflen and offset, sets direction, |
| 656 | * etc. The returned io_u is fully ready to be prepped and submitted. |
| 657 | */ |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 658 | struct io_u *get_io_u(struct thread_data *td) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 659 | { |
Jens Axboe | 3d7c391 | 2007-02-19 13:16:12 +0100 | [diff] [blame] | 660 | struct fio_file *f; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 661 | struct io_u *io_u; |
| 662 | |
| 663 | io_u = __get_io_u(td); |
| 664 | if (!io_u) |
| 665 | return NULL; |
| 666 | |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 667 | /* |
| 668 | * from a requeue, io_u already setup |
| 669 | */ |
| 670 | if (io_u->file) |
Jens Axboe | 77f392b | 2007-02-19 20:13:09 +0100 | [diff] [blame] | 671 | goto out; |
Jens Axboe | 755200a | 2007-02-19 13:08:12 +0100 | [diff] [blame] | 672 | |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 673 | /* |
| 674 | * If using an iolog, grab next piece if any available. |
| 675 | */ |
| 676 | if (td->o.read_iolog_file) { |
| 677 | if (read_iolog_get(td, io_u)) |
| 678 | goto err_put; |
| 679 | } else if (set_io_u_file(td, io_u)) |
| 680 | goto err_put; |
| 681 | |
| 682 | f = io_u->file; |
| 683 | assert(f->flags & FIO_FILE_OPEN); |
Jens Axboe | 97af62c | 2007-05-22 11:12:13 +0200 | [diff] [blame] | 684 | |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 685 | if (io_u->ddir != DDIR_SYNC) { |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 686 | if (!io_u->buflen) |
| 687 | goto err_put; |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 688 | |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 689 | f->last_pos = io_u->offset + io_u->buflen; |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 690 | |
Jens Axboe | 2dc1bbe | 2007-03-15 15:01:33 +0100 | [diff] [blame] | 691 | if (td->o.verify != VERIFY_NONE) |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 692 | populate_verify_io_u(td, io_u); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 693 | } |
| 694 | |
Jens Axboe | 165faf1 | 2007-02-07 11:30:37 +0100 | [diff] [blame] | 695 | /* |
| 696 | * Set io data pointers. |
| 697 | */ |
Jens Axboe | d460eb3 | 2007-04-16 21:39:33 +0200 | [diff] [blame] | 698 | io_u->endpos = io_u->offset + io_u->buflen; |
Jens Axboe | 77f392b | 2007-02-19 20:13:09 +0100 | [diff] [blame] | 699 | out: |
Jens Axboe | cec6b55 | 2007-02-06 20:15:38 +0100 | [diff] [blame] | 700 | io_u->xfer_buf = io_u->buf; |
| 701 | io_u->xfer_buflen = io_u->buflen; |
Jens Axboe | 165faf1 | 2007-02-07 11:30:37 +0100 | [diff] [blame] | 702 | |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 703 | if (!td_io_prep(td, io_u)) { |
| 704 | fio_gettime(&io_u->start_time, NULL); |
| 705 | return io_u; |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 706 | } |
Jens Axboe | 429f667 | 2007-07-23 10:38:43 +0200 | [diff] [blame] | 707 | err_put: |
| 708 | put_io_u(td, io_u); |
| 709 | return NULL; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 710 | } |
| 711 | |
Jens Axboe | 5451792 | 2007-03-05 10:06:06 +0100 | [diff] [blame] | 712 | void io_u_log_error(struct thread_data *td, struct io_u *io_u) |
| 713 | { |
| 714 | const char *msg[] = { "read", "write", "sync" }; |
| 715 | |
| 716 | log_err("fio: io_u error"); |
| 717 | |
| 718 | if (io_u->file) |
| 719 | log_err(" on file %s", io_u->file->file_name); |
| 720 | |
| 721 | log_err(": %s\n", strerror(io_u->error)); |
| 722 | |
| 723 | log_err(" %s offset=%llu, buflen=%lu\n", msg[io_u->ddir], io_u->offset, io_u->xfer_buflen); |
| 724 | |
| 725 | if (!td->error) |
| 726 | td_verror(td, io_u->error, "io_u error"); |
| 727 | } |
| 728 | |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 729 | static void io_completed(struct thread_data *td, struct io_u *io_u, |
| 730 | struct io_completion_data *icd) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 731 | { |
Jens Axboe | d85f511 | 2007-06-18 09:41:23 +0200 | [diff] [blame] | 732 | unsigned long usec; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 733 | |
Jens Axboe | 0c6e751 | 2007-02-22 11:19:39 +0100 | [diff] [blame] | 734 | assert(io_u->flags & IO_U_F_FLIGHT); |
| 735 | io_u->flags &= ~IO_U_F_FLIGHT; |
| 736 | |
Jens Axboe | 87dc1ab | 2006-10-24 14:41:26 +0200 | [diff] [blame] | 737 | if (io_u->ddir == DDIR_SYNC) { |
| 738 | td->last_was_sync = 1; |
| 739 | return; |
| 740 | } |
| 741 | |
| 742 | td->last_was_sync = 0; |
| 743 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 744 | if (!io_u->error) { |
| 745 | unsigned int bytes = io_u->buflen - io_u->resid; |
Jens Axboe | 1e97cce | 2006-12-05 11:44:16 +0100 | [diff] [blame] | 746 | const enum fio_ddir idx = io_u->ddir; |
Jens Axboe | 3af6ef3 | 2007-02-18 06:57:43 +0100 | [diff] [blame] | 747 | int ret; |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 748 | |
| 749 | td->io_blocks[idx]++; |
| 750 | td->io_bytes[idx] += bytes; |
| 751 | td->zone_bytes += bytes; |
| 752 | td->this_io_bytes[idx] += bytes; |
| 753 | |
Jens Axboe | d460eb3 | 2007-04-16 21:39:33 +0200 | [diff] [blame] | 754 | io_u->file->last_completed_pos = io_u->endpos; |
Jens Axboe | 02bcaa8 | 2006-11-24 10:42:00 +0100 | [diff] [blame] | 755 | |
Jens Axboe | d85f511 | 2007-06-18 09:41:23 +0200 | [diff] [blame] | 756 | usec = utime_since(&io_u->issue_time, &icd->time); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 757 | |
Jens Axboe | d85f511 | 2007-06-18 09:41:23 +0200 | [diff] [blame] | 758 | add_clat_sample(td, idx, usec); |
Jens Axboe | 02bcaa8 | 2006-11-24 10:42:00 +0100 | [diff] [blame] | 759 | add_bw_sample(td, idx, &icd->time); |
Jens Axboe | 04a0fea | 2007-06-19 12:48:41 +0200 | [diff] [blame] | 760 | io_u_mark_latency(td, usec); |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 761 | |
Jens Axboe | 660a1cb | 2007-04-17 15:37:47 +0200 | [diff] [blame] | 762 | if (td_write(td) && idx == DDIR_WRITE && |
Jens Axboe | 4112840 | 2007-03-27 08:32:48 +0200 | [diff] [blame] | 763 | td->o.verify != VERIFY_NONE) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 764 | log_io_piece(td, io_u); |
| 765 | |
| 766 | icd->bytes_done[idx] += bytes; |
Jens Axboe | 3af6ef3 | 2007-02-18 06:57:43 +0100 | [diff] [blame] | 767 | |
Jens Axboe | d7762cf | 2007-02-23 12:34:57 +0100 | [diff] [blame] | 768 | if (io_u->end_io) { |
Jens Axboe | 36690c9 | 2007-03-26 10:23:34 +0200 | [diff] [blame] | 769 | ret = io_u->end_io(td, io_u); |
Jens Axboe | 3af6ef3 | 2007-02-18 06:57:43 +0100 | [diff] [blame] | 770 | if (ret && !icd->error) |
| 771 | icd->error = ret; |
| 772 | } |
Jens Axboe | 5451792 | 2007-03-05 10:06:06 +0100 | [diff] [blame] | 773 | } else { |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 774 | icd->error = io_u->error; |
Jens Axboe | 5451792 | 2007-03-05 10:06:06 +0100 | [diff] [blame] | 775 | io_u_log_error(td, io_u); |
| 776 | } |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 777 | } |
| 778 | |
Jens Axboe | d7762cf | 2007-02-23 12:34:57 +0100 | [diff] [blame] | 779 | static void init_icd(struct io_completion_data *icd, int nr) |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 780 | { |
| 781 | fio_gettime(&icd->time, NULL); |
| 782 | |
Jens Axboe | 3af6ef3 | 2007-02-18 06:57:43 +0100 | [diff] [blame] | 783 | icd->nr = nr; |
| 784 | |
Jens Axboe | 36167d8 | 2007-02-18 05:41:31 +0100 | [diff] [blame] | 785 | icd->error = 0; |
| 786 | icd->bytes_done[0] = icd->bytes_done[1] = 0; |
| 787 | } |
| 788 | |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 789 | static void ios_completed(struct thread_data *td, |
| 790 | struct io_completion_data *icd) |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 791 | { |
| 792 | struct io_u *io_u; |
| 793 | int i; |
| 794 | |
Jens Axboe | 10ba535 | 2006-10-20 11:39:27 +0200 | [diff] [blame] | 795 | for (i = 0; i < icd->nr; i++) { |
| 796 | io_u = td->io_ops->event(td, i); |
| 797 | |
| 798 | io_completed(td, io_u, icd); |
| 799 | put_io_u(td, io_u); |
| 800 | } |
| 801 | } |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 802 | |
Jens Axboe | e7e6cfb | 2007-02-20 10:58:34 +0100 | [diff] [blame] | 803 | /* |
| 804 | * Complete a single io_u for the sync engines. |
| 805 | */ |
Jens Axboe | d7762cf | 2007-02-23 12:34:57 +0100 | [diff] [blame] | 806 | 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] | 807 | { |
| 808 | struct io_completion_data icd; |
| 809 | |
Jens Axboe | d7762cf | 2007-02-23 12:34:57 +0100 | [diff] [blame] | 810 | init_icd(&icd, 1); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 811 | io_completed(td, io_u, &icd); |
| 812 | put_io_u(td, io_u); |
| 813 | |
| 814 | if (!icd.error) |
| 815 | return icd.bytes_done[0] + icd.bytes_done[1]; |
| 816 | |
Jens Axboe | 37e974a | 2007-03-02 15:16:45 +0100 | [diff] [blame] | 817 | td_verror(td, icd.error, "io_u_sync_complete"); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 818 | return -1; |
| 819 | } |
| 820 | |
Jens Axboe | e7e6cfb | 2007-02-20 10:58:34 +0100 | [diff] [blame] | 821 | /* |
| 822 | * Called to complete min_events number of io for the async engines. |
| 823 | */ |
Jens Axboe | d7762cf | 2007-02-23 12:34:57 +0100 | [diff] [blame] | 824 | long io_u_queued_complete(struct thread_data *td, int min_events) |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 825 | { |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 826 | struct io_completion_data icd; |
Jens Axboe | 00de55e | 2007-02-20 10:45:57 +0100 | [diff] [blame] | 827 | struct timespec *tvp = NULL; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 828 | int ret; |
Davide Libenzi | 4d06a33 | 2007-03-22 07:43:50 +0100 | [diff] [blame] | 829 | struct timespec ts = { .tv_sec = 0, .tv_nsec = 0, }; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 830 | |
Davide Libenzi | 4d06a33 | 2007-03-22 07:43:50 +0100 | [diff] [blame] | 831 | if (!min_events) |
Jens Axboe | 00de55e | 2007-02-20 10:45:57 +0100 | [diff] [blame] | 832 | tvp = &ts; |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 833 | |
Jens Axboe | 00de55e | 2007-02-20 10:45:57 +0100 | [diff] [blame] | 834 | ret = td_io_getevents(td, min_events, td->cur_depth, tvp); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 835 | if (ret < 0) { |
Jens Axboe | e1161c3 | 2007-02-22 19:36:48 +0100 | [diff] [blame] | 836 | td_verror(td, -ret, "td_io_getevents"); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 837 | return ret; |
| 838 | } else if (!ret) |
| 839 | return ret; |
| 840 | |
Jens Axboe | d7762cf | 2007-02-23 12:34:57 +0100 | [diff] [blame] | 841 | init_icd(&icd, ret); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 842 | ios_completed(td, &icd); |
| 843 | if (!icd.error) |
| 844 | return icd.bytes_done[0] + icd.bytes_done[1]; |
| 845 | |
Jens Axboe | 37e974a | 2007-03-02 15:16:45 +0100 | [diff] [blame] | 846 | td_verror(td, icd.error, "io_u_queued_complete"); |
Jens Axboe | 9760102 | 2007-02-18 12:47:29 +0100 | [diff] [blame] | 847 | return -1; |
| 848 | } |
Jens Axboe | 7e77dd0 | 2007-02-20 10:57:34 +0100 | [diff] [blame] | 849 | |
| 850 | /* |
| 851 | * Call when io_u is really queued, to update the submission latency. |
| 852 | */ |
| 853 | void io_u_queued(struct thread_data *td, struct io_u *io_u) |
| 854 | { |
| 855 | unsigned long slat_time; |
| 856 | |
Jens Axboe | d85f511 | 2007-06-18 09:41:23 +0200 | [diff] [blame] | 857 | slat_time = utime_since(&io_u->start_time, &io_u->issue_time); |
Jens Axboe | 7e77dd0 | 2007-02-20 10:57:34 +0100 | [diff] [blame] | 858 | add_slat_sample(td, io_u->ddir, slat_time); |
| 859 | } |
Jens Axboe | 433afcb | 2007-02-22 10:39:01 +0100 | [diff] [blame] | 860 | |
Jens Axboe | 55bc972 | 2007-02-22 11:30:05 +0100 | [diff] [blame] | 861 | #ifdef FIO_USE_TIMEOUT |
Jens Axboe | 433afcb | 2007-02-22 10:39:01 +0100 | [diff] [blame] | 862 | void io_u_set_timeout(struct thread_data *td) |
| 863 | { |
| 864 | assert(td->cur_depth); |
| 865 | |
| 866 | td->timer.it_interval.tv_sec = 0; |
| 867 | td->timer.it_interval.tv_usec = 0; |
| 868 | td->timer.it_value.tv_sec = IO_U_TIMEOUT + IO_U_TIMEOUT_INC; |
| 869 | td->timer.it_value.tv_usec = 0; |
| 870 | setitimer(ITIMER_REAL, &td->timer, NULL); |
| 871 | fio_gettime(&td->timeout_end, NULL); |
| 872 | } |
Jens Axboe | 5945b9b | 2007-02-22 20:33:01 +0100 | [diff] [blame] | 873 | |
| 874 | static void io_u_dump(struct io_u *io_u) |
| 875 | { |
| 876 | unsigned long t_start = mtime_since_now(&io_u->start_time); |
| 877 | unsigned long t_issue = mtime_since_now(&io_u->issue_time); |
| 878 | |
| 879 | log_err("io_u=%p, t_start=%lu, t_issue=%lu\n", io_u, t_start, t_issue); |
| 880 | log_err(" buf=%p/%p, len=%lu/%lu, offset=%llu\n", io_u->buf, io_u->xfer_buf, io_u->buflen, io_u->xfer_buflen, io_u->offset); |
| 881 | log_err(" ddir=%d, fname=%s\n", io_u->ddir, io_u->file->file_name); |
| 882 | } |
Jens Axboe | 55bc972 | 2007-02-22 11:30:05 +0100 | [diff] [blame] | 883 | #else |
| 884 | void io_u_set_timeout(struct thread_data fio_unused *td) |
| 885 | { |
| 886 | } |
| 887 | #endif |
Jens Axboe | 433afcb | 2007-02-22 10:39:01 +0100 | [diff] [blame] | 888 | |
Jens Axboe | 55bc972 | 2007-02-22 11:30:05 +0100 | [diff] [blame] | 889 | #ifdef FIO_USE_TIMEOUT |
Jens Axboe | 433afcb | 2007-02-22 10:39:01 +0100 | [diff] [blame] | 890 | static void io_u_timeout_handler(int fio_unused sig) |
| 891 | { |
| 892 | struct thread_data *td, *__td; |
| 893 | pid_t pid = getpid(); |
Jens Axboe | 5945b9b | 2007-02-22 20:33:01 +0100 | [diff] [blame] | 894 | struct list_head *entry; |
| 895 | struct io_u *io_u; |
Jens Axboe | 433afcb | 2007-02-22 10:39:01 +0100 | [diff] [blame] | 896 | int i; |
| 897 | |
| 898 | log_err("fio: io_u timeout\n"); |
| 899 | |
| 900 | /* |
| 901 | * TLS would be nice... |
| 902 | */ |
| 903 | td = NULL; |
| 904 | for_each_td(__td, i) { |
| 905 | if (__td->pid == pid) { |
| 906 | td = __td; |
| 907 | break; |
| 908 | } |
| 909 | } |
| 910 | |
| 911 | if (!td) { |
| 912 | log_err("fio: io_u timeout, can't find job\n"); |
| 913 | exit(1); |
| 914 | } |
| 915 | |
| 916 | if (!td->cur_depth) { |
| 917 | log_err("fio: timeout without pending work?\n"); |
| 918 | return; |
| 919 | } |
| 920 | |
Jens Axboe | 15506d0 | 2007-03-15 15:04:43 +0100 | [diff] [blame] | 921 | log_err("fio: io_u timeout: job=%s, pid=%d\n", td->o.name, td->pid); |
Jens Axboe | 5945b9b | 2007-02-22 20:33:01 +0100 | [diff] [blame] | 922 | |
| 923 | list_for_each(entry, &td->io_u_busylist) { |
| 924 | io_u = list_entry(entry, struct io_u, list); |
| 925 | |
| 926 | io_u_dump(io_u); |
| 927 | } |
| 928 | |
| 929 | td_verror(td, ETIMEDOUT, "io_u timeout"); |
Jens Axboe | 433afcb | 2007-02-22 10:39:01 +0100 | [diff] [blame] | 930 | exit(1); |
| 931 | } |
Jens Axboe | 55bc972 | 2007-02-22 11:30:05 +0100 | [diff] [blame] | 932 | #endif |
Jens Axboe | 433afcb | 2007-02-22 10:39:01 +0100 | [diff] [blame] | 933 | |
| 934 | void io_u_init_timeout(void) |
| 935 | { |
Jens Axboe | 55bc972 | 2007-02-22 11:30:05 +0100 | [diff] [blame] | 936 | #ifdef FIO_USE_TIMEOUT |
Jens Axboe | 433afcb | 2007-02-22 10:39:01 +0100 | [diff] [blame] | 937 | signal(SIGALRM, io_u_timeout_handler); |
Jens Axboe | 55bc972 | 2007-02-22 11:30:05 +0100 | [diff] [blame] | 938 | #endif |
Jens Axboe | 433afcb | 2007-02-22 10:39:01 +0100 | [diff] [blame] | 939 | } |