Commit | Line | Data |
---|---|---|
ebac4655 JA |
1 | /* |
2 | * fio - the flexible io tester | |
3 | * | |
4 | * Copyright (C) 2005 Jens Axboe <axboe@suse.de> | |
aae22ca7 | 5 | * Copyright (C) 2006 Jens Axboe <axboe@kernel.dk> |
ebac4655 | 6 | * |
8e9fe637 JA |
7 | * The license below covers all files distributed with fio unless otherwise |
8 | * noted in the file itself. | |
9 | * | |
ebac4655 | 10 | * This program is free software; you can redistribute it and/or modify |
8e9fe637 JA |
11 | * it under the terms of the GNU General Public License version 2 as |
12 | * published by the Free Software Foundation. | |
ebac4655 JA |
13 | * |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | * | |
23 | */ | |
ebac4655 JA |
24 | #include <unistd.h> |
25 | #include <fcntl.h> | |
26 | #include <string.h> | |
ebac4655 JA |
27 | #include <signal.h> |
28 | #include <time.h> | |
dbe1125e | 29 | #include <locale.h> |
36167d82 | 30 | #include <assert.h> |
ebac4655 JA |
31 | #include <sys/stat.h> |
32 | #include <sys/wait.h> | |
33 | #include <sys/ipc.h> | |
34 | #include <sys/shm.h> | |
ebac4655 JA |
35 | #include <sys/mman.h> |
36 | ||
37 | #include "fio.h" | |
38 | #include "os.h" | |
39 | ||
29d610e1 JA |
40 | static unsigned long page_mask; |
41 | #define ALIGN(buf) \ | |
42 | (char *) (((unsigned long) (buf) + page_mask) & ~page_mask) | |
ebac4655 JA |
43 | |
44 | int groupid = 0; | |
45 | int thread_number = 0; | |
ebac4655 | 46 | int shm_id = 0; |
53cdc686 | 47 | int temp_stall_ts; |
ebac4655 | 48 | |
bbfd6b00 | 49 | static volatile int startup_sem; |
6ce15a32 | 50 | static volatile int fio_abort; |
437c9b71 | 51 | static int exit_value; |
ebac4655 | 52 | |
bb3884d8 JA |
53 | struct io_log *agg_io_log[2]; |
54 | ||
ebac4655 | 55 | #define TERMINATE_ALL (-1) |
75154845 | 56 | #define JOB_START_TIMEOUT (5 * 1000) |
ebac4655 | 57 | |
6ce15a32 JA |
58 | static inline void td_set_runstate(struct thread_data *td, int runstate) |
59 | { | |
60 | td->runstate = runstate; | |
61 | } | |
62 | ||
63 | static void terminate_threads(int group_id, int forced_kill) | |
ebac4655 | 64 | { |
34572e28 | 65 | struct thread_data *td; |
ebac4655 JA |
66 | int i; |
67 | ||
34572e28 | 68 | for_each_td(td, i) { |
ebac4655 JA |
69 | if (group_id == TERMINATE_ALL || groupid == td->groupid) { |
70 | td->terminate = 1; | |
71 | td->start_delay = 0; | |
6ce15a32 JA |
72 | if (forced_kill) |
73 | td_set_runstate(td, TD_EXITED); | |
ebac4655 JA |
74 | } |
75 | } | |
76 | } | |
77 | ||
78 | static void sig_handler(int sig) | |
79 | { | |
80 | switch (sig) { | |
81 | case SIGALRM: | |
82 | update_io_ticks(); | |
83 | disk_util_timer_arm(); | |
84 | print_thread_status(); | |
85 | break; | |
86 | default: | |
6ce15a32 | 87 | printf("\nfio: terminating on signal %d\n", sig); |
ebac4655 | 88 | fflush(stdout); |
6ce15a32 | 89 | terminate_threads(TERMINATE_ALL, 0); |
ebac4655 JA |
90 | break; |
91 | } | |
92 | } | |
93 | ||
906c8d75 JA |
94 | /* |
95 | * Check if we are above the minimum rate given. | |
96 | */ | |
ebac4655 JA |
97 | static int check_min_rate(struct thread_data *td, struct timeval *now) |
98 | { | |
99 | unsigned long spent; | |
100 | unsigned long rate; | |
101 | int ddir = td->ddir; | |
102 | ||
103 | /* | |
104 | * allow a 2 second settle period in the beginning | |
105 | */ | |
106 | if (mtime_since(&td->start, now) < 2000) | |
107 | return 0; | |
108 | ||
109 | /* | |
110 | * if rate blocks is set, sample is running | |
111 | */ | |
112 | if (td->rate_bytes) { | |
113 | spent = mtime_since(&td->lastrate, now); | |
114 | if (spent < td->ratecycle) | |
115 | return 0; | |
116 | ||
117 | rate = (td->this_io_bytes[ddir] - td->rate_bytes) / spent; | |
118 | if (rate < td->ratemin) { | |
1e97cce9 | 119 | fprintf(f_out, "%s: min rate %u not met, got %luKiB/sec\n", td->name, td->ratemin, rate); |
ebac4655 JA |
120 | return 1; |
121 | } | |
122 | } | |
123 | ||
124 | td->rate_bytes = td->this_io_bytes[ddir]; | |
125 | memcpy(&td->lastrate, now, sizeof(*now)); | |
126 | return 0; | |
127 | } | |
128 | ||
129 | static inline int runtime_exceeded(struct thread_data *td, struct timeval *t) | |
130 | { | |
131 | if (!td->timeout) | |
132 | return 0; | |
133 | if (mtime_since(&td->epoch, t) >= td->timeout * 1000) | |
134 | return 1; | |
135 | ||
136 | return 0; | |
137 | } | |
138 | ||
906c8d75 JA |
139 | /* |
140 | * When job exits, we can cancel the in-flight IO if we are using async | |
141 | * io. Attempt to do so. | |
142 | */ | |
ebac4655 JA |
143 | static void cleanup_pending_aio(struct thread_data *td) |
144 | { | |
ebac4655 | 145 | struct list_head *entry, *n; |
ebac4655 JA |
146 | struct io_u *io_u; |
147 | int r; | |
148 | ||
149 | /* | |
150 | * get immediately available events, if any | |
151 | */ | |
97601024 | 152 | io_u_queued_complete(td, 0, NULL); |
ebac4655 JA |
153 | |
154 | /* | |
155 | * now cancel remaining active events | |
156 | */ | |
2866c82d | 157 | if (td->io_ops->cancel) { |
ebac4655 JA |
158 | list_for_each_safe(entry, n, &td->io_u_busylist) { |
159 | io_u = list_entry(entry, struct io_u, list); | |
160 | ||
2866c82d | 161 | r = td->io_ops->cancel(td, io_u); |
ebac4655 JA |
162 | if (!r) |
163 | put_io_u(td, io_u); | |
164 | } | |
165 | } | |
166 | ||
97601024 JA |
167 | if (td->cur_depth) |
168 | io_u_queued_complete(td, td->cur_depth, NULL); | |
ebac4655 JA |
169 | } |
170 | ||
858a3d47 JA |
171 | /* |
172 | * Helper to handle the final sync of a file. Works just like the normal | |
173 | * io path, just does everything sync. | |
174 | */ | |
175 | static int fio_io_sync(struct thread_data *td, struct fio_file *f) | |
176 | { | |
177 | struct io_u *io_u = __get_io_u(td); | |
858a3d47 JA |
178 | int ret; |
179 | ||
180 | if (!io_u) | |
181 | return 1; | |
182 | ||
183 | io_u->ddir = DDIR_SYNC; | |
184 | io_u->file = f; | |
185 | ||
186 | if (td_io_prep(td, io_u)) { | |
187 | put_io_u(td, io_u); | |
188 | return 1; | |
189 | } | |
190 | ||
755200a3 | 191 | requeue: |
858a3d47 | 192 | ret = td_io_queue(td, io_u); |
36167d82 | 193 | if (ret < 0) { |
353a7e0e | 194 | td_verror(td, io_u->error); |
858a3d47 | 195 | put_io_u(td, io_u); |
858a3d47 | 196 | return 1; |
36167d82 | 197 | } else if (ret == FIO_Q_QUEUED) { |
97601024 | 198 | if (io_u_queued_complete(td, 1, NULL)) |
36167d82 | 199 | return 1; |
36167d82 JA |
200 | } else if (ret == FIO_Q_COMPLETED) { |
201 | if (io_u->error) { | |
202 | td_verror(td, io_u->error); | |
203 | return 1; | |
204 | } | |
858a3d47 | 205 | |
97601024 | 206 | io_u_sync_complete(td, io_u, NULL); |
755200a3 JA |
207 | } else if (ret == FIO_Q_BUSY) { |
208 | if (td_io_commit(td)) | |
209 | return 1; | |
210 | goto requeue; | |
858a3d47 JA |
211 | } |
212 | ||
213 | return 0; | |
214 | } | |
215 | ||
906c8d75 JA |
216 | /* |
217 | * The main verify engine. Runs over the writes we previusly submitted, | |
218 | * reads the blocks back in, and checks the crc/md5 of the data. | |
219 | */ | |
1e97cce9 | 220 | static void do_verify(struct thread_data *td) |
ebac4655 | 221 | { |
53cdc686 | 222 | struct fio_file *f; |
36167d82 | 223 | struct io_u *io_u; |
3af6ef39 | 224 | int ret, i, min_events; |
e5b401d4 JA |
225 | |
226 | /* | |
227 | * sync io first and invalidate cache, to make sure we really | |
228 | * read from disk. | |
229 | */ | |
230 | for_each_file(td, f, i) { | |
858a3d47 | 231 | fio_io_sync(td, f); |
e5b401d4 JA |
232 | file_invalidate_cache(td, f); |
233 | } | |
ebac4655 JA |
234 | |
235 | td_set_runstate(td, TD_VERIFYING); | |
236 | ||
36167d82 JA |
237 | io_u = NULL; |
238 | while (!td->terminate) { | |
ebac4655 JA |
239 | io_u = __get_io_u(td); |
240 | if (!io_u) | |
241 | break; | |
242 | ||
36167d82 | 243 | if (runtime_exceeded(td, &io_u->start_time)) |
02bcaa8c | 244 | break; |
02bcaa8c | 245 | |
36167d82 | 246 | if (get_next_verify(td, io_u)) |
ebac4655 | 247 | break; |
ebac4655 | 248 | |
36167d82 | 249 | if (td_io_prep(td, io_u)) |
53cdc686 JA |
250 | break; |
251 | ||
36167d82 JA |
252 | requeue: |
253 | ret = td_io_queue(td, io_u); | |
53cdc686 | 254 | |
36167d82 JA |
255 | switch (ret) { |
256 | case FIO_Q_COMPLETED: | |
257 | if (io_u->error) | |
22819ec2 | 258 | ret = -io_u->error; |
36167d82 JA |
259 | if (io_u->xfer_buflen != io_u->resid && io_u->resid) { |
260 | int bytes = io_u->xfer_buflen - io_u->resid; | |
ebac4655 | 261 | |
36167d82 JA |
262 | io_u->xfer_buflen = io_u->resid; |
263 | io_u->xfer_buf += bytes; | |
264 | goto requeue; | |
265 | } | |
99784632 JA |
266 | ret = io_u_sync_complete(td, io_u, verify_io_u); |
267 | if (ret) | |
36167d82 | 268 | break; |
36167d82 JA |
269 | continue; |
270 | case FIO_Q_QUEUED: | |
271 | break; | |
755200a3 JA |
272 | case FIO_Q_BUSY: |
273 | requeue_io_u(td, &io_u); | |
274 | ret = td_io_commit(td); | |
275 | break; | |
36167d82 JA |
276 | default: |
277 | assert(ret < 0); | |
22819ec2 | 278 | td_verror(td, -ret); |
ebac4655 JA |
279 | break; |
280 | } | |
281 | ||
99784632 | 282 | if (ret < 0 || td->error) |
3af6ef39 JA |
283 | break; |
284 | ||
ebac4655 | 285 | /* |
3af6ef39 JA |
286 | * if we can queue more, do so. but check if there are |
287 | * completed io_u's first. | |
ebac4655 | 288 | */ |
97601024 | 289 | min_events = 0; |
e916b390 | 290 | if (queue_full(td) || ret == FIO_Q_BUSY) { |
3af6ef39 | 291 | min_events = 1; |
3af6ef39 | 292 | |
e916b390 JA |
293 | if (td->cur_depth > td->iodepth_low) |
294 | min_events = td->cur_depth - td->iodepth_low; | |
295 | } | |
296 | ||
3af6ef39 JA |
297 | /* |
298 | * Reap required number of io units, if any, and do the | |
299 | * verification on them through the callback handler | |
300 | */ | |
97601024 | 301 | if (io_u_queued_complete(td, min_events, verify_io_u)) |
ebac4655 | 302 | break; |
36167d82 | 303 | } |
ebac4655 | 304 | |
36167d82 JA |
305 | if (io_u) |
306 | put_io_u(td, io_u); | |
ebac4655 JA |
307 | |
308 | if (td->cur_depth) | |
309 | cleanup_pending_aio(td); | |
310 | ||
311 | td_set_runstate(td, TD_RUNNING); | |
312 | } | |
313 | ||
b990b5c0 JA |
314 | /* |
315 | * Not really an io thread, all it does is burn CPU cycles in the specified | |
316 | * manner. | |
317 | */ | |
318 | static void do_cpuio(struct thread_data *td) | |
319 | { | |
320 | struct timeval e; | |
321 | int split = 100 / td->cpuload; | |
322 | int i = 0; | |
323 | ||
324 | while (!td->terminate) { | |
02bcaa8c | 325 | fio_gettime(&e, NULL); |
b990b5c0 JA |
326 | |
327 | if (runtime_exceeded(td, &e)) | |
328 | break; | |
329 | ||
330 | if (!(i % split)) | |
331 | __usec_sleep(10000); | |
332 | else | |
333 | usec_sleep(td, 10000); | |
334 | ||
335 | i++; | |
336 | } | |
337 | } | |
338 | ||
32cd46a0 | 339 | /* |
906c8d75 | 340 | * Main IO worker function. It retrieves io_u's to process and queues |
32cd46a0 JA |
341 | * and reaps them, checking for rate and errors along the way. |
342 | */ | |
ebac4655 JA |
343 | static void do_io(struct thread_data *td) |
344 | { | |
02bcaa8c | 345 | struct timeval s; |
ebac4655 | 346 | unsigned long usec; |
84585003 | 347 | int i, ret = 0; |
ebac4655 | 348 | |
5853e5a8 JA |
349 | td_set_runstate(td, TD_RUNNING); |
350 | ||
3951414d | 351 | while ((td->this_io_bytes[0] + td->this_io_bytes[1]) < td->io_size) { |
97601024 JA |
352 | struct timeval comp_time; |
353 | long bytes_done = 0; | |
84585003 | 354 | int min_evts = 0; |
ebac4655 JA |
355 | struct io_u *io_u; |
356 | ||
357 | if (td->terminate) | |
358 | break; | |
359 | ||
3d7c391d | 360 | io_u = get_io_u(td); |
ebac4655 JA |
361 | if (!io_u) |
362 | break; | |
363 | ||
364 | memcpy(&s, &io_u->start_time, sizeof(s)); | |
97601024 JA |
365 | |
366 | if (runtime_exceeded(td, &s)) { | |
367 | put_io_u(td, io_u); | |
368 | break; | |
369 | } | |
cec6b55d | 370 | requeue: |
45bee283 | 371 | ret = td_io_queue(td, io_u); |
36167d82 JA |
372 | |
373 | switch (ret) { | |
374 | case FIO_Q_COMPLETED: | |
375 | if (io_u->error) { | |
376 | ret = io_u->error; | |
377 | break; | |
378 | } | |
379 | if (io_u->xfer_buflen != io_u->resid && io_u->resid) { | |
380 | int bytes = io_u->xfer_buflen - io_u->resid; | |
381 | ||
cec6b55d | 382 | io_u->xfer_buflen = io_u->resid; |
36167d82 | 383 | io_u->xfer_buf += bytes; |
cec6b55d | 384 | goto requeue; |
cec6b55d | 385 | } |
97601024 JA |
386 | fio_gettime(&comp_time, NULL); |
387 | bytes_done = io_u_sync_complete(td, io_u, NULL); | |
99784632 JA |
388 | if (bytes_done < 0) |
389 | ret = bytes_done; | |
36167d82 JA |
390 | break; |
391 | case FIO_Q_QUEUED: | |
7e77dd02 JA |
392 | /* |
393 | * if the engine doesn't have a commit hook, | |
394 | * the io_u is really queued. if it does have such | |
395 | * a hook, it has to call io_u_queued() itself. | |
396 | */ | |
397 | if (td->io_ops->commit == NULL) | |
398 | io_u_queued(td, io_u); | |
36167d82 | 399 | break; |
755200a3 JA |
400 | case FIO_Q_BUSY: |
401 | requeue_io_u(td, &io_u); | |
402 | ret = td_io_commit(td); | |
403 | break; | |
36167d82 JA |
404 | default: |
405 | assert(ret < 0); | |
406 | put_io_u(td, io_u); | |
407 | break; | |
ebac4655 JA |
408 | } |
409 | ||
99784632 | 410 | if (ret < 0 || td->error) |
36167d82 JA |
411 | break; |
412 | ||
97601024 JA |
413 | /* |
414 | * See if we need to complete some commands | |
415 | */ | |
755200a3 | 416 | if (ret == FIO_Q_QUEUED || ret == FIO_Q_BUSY) { |
97601024 | 417 | min_evts = 0; |
e916b390 | 418 | if (queue_full(td) || ret == FIO_Q_BUSY) { |
36167d82 | 419 | min_evts = 1; |
ebac4655 | 420 | |
e916b390 JA |
421 | if (td->cur_depth > td->iodepth_low) |
422 | min_evts = td->cur_depth - td->iodepth_low; | |
423 | } | |
424 | ||
97601024 JA |
425 | fio_gettime(&comp_time, NULL); |
426 | bytes_done = io_u_queued_complete(td, min_evts, NULL); | |
427 | if (bytes_done < 0) | |
36167d82 | 428 | break; |
ebac4655 JA |
429 | } |
430 | ||
97601024 JA |
431 | if (!bytes_done) |
432 | continue; | |
433 | ||
ebac4655 JA |
434 | /* |
435 | * the rate is batched for now, it should work for batches | |
436 | * of completions except the very first one which may look | |
437 | * a little bursty | |
438 | */ | |
97601024 | 439 | usec = utime_since(&s, &comp_time); |
ebac4655 | 440 | |
97601024 | 441 | rate_throttle(td, usec, bytes_done, td->ddir); |
ebac4655 | 442 | |
97601024 | 443 | if (check_min_rate(td, &comp_time)) { |
98aa62d8 | 444 | if (exitall_on_terminate) |
6ce15a32 | 445 | terminate_threads(td->groupid, 0); |
fd841467 | 446 | td_verror(td, ENODATA); |
ebac4655 JA |
447 | break; |
448 | } | |
449 | ||
9c1f7434 JA |
450 | if (td->thinktime) { |
451 | unsigned long long b; | |
452 | ||
453 | b = td->io_blocks[0] + td->io_blocks[1]; | |
48097d5c JA |
454 | if (!(b % td->thinktime_blocks)) { |
455 | int left; | |
456 | ||
457 | if (td->thinktime_spin) | |
458 | __usec_sleep(td->thinktime_spin); | |
459 | ||
460 | left = td->thinktime - td->thinktime_spin; | |
461 | if (left) | |
462 | usec_sleep(td, left); | |
463 | } | |
9c1f7434 | 464 | } |
ebac4655 JA |
465 | } |
466 | ||
4d2413c6 | 467 | if (!td->error) { |
3d7c391d JA |
468 | struct fio_file *f; |
469 | ||
84585003 JA |
470 | if (td->cur_depth) |
471 | cleanup_pending_aio(td); | |
ebac4655 | 472 | |
84585003 JA |
473 | if (should_fsync(td) && td->end_fsync) { |
474 | td_set_runstate(td, TD_FSYNCING); | |
475 | for_each_file(td, f, i) | |
858a3d47 | 476 | fio_io_sync(td, f); |
84585003 | 477 | } |
5853e5a8 | 478 | } |
ebac4655 JA |
479 | } |
480 | ||
ebac4655 JA |
481 | static void cleanup_io_u(struct thread_data *td) |
482 | { | |
483 | struct list_head *entry, *n; | |
484 | struct io_u *io_u; | |
485 | ||
486 | list_for_each_safe(entry, n, &td->io_u_freelist) { | |
487 | io_u = list_entry(entry, struct io_u, list); | |
488 | ||
489 | list_del(&io_u->list); | |
490 | free(io_u); | |
491 | } | |
492 | ||
2f9ade3c | 493 | free_io_mem(td); |
ebac4655 JA |
494 | } |
495 | ||
6b9cea23 JA |
496 | /* |
497 | * "randomly" fill the buffer contents | |
498 | */ | |
66eeb296 | 499 | static void fill_rand_buf(struct io_u *io_u, int max_bs) |
6b9cea23 | 500 | { |
66eeb296 | 501 | int *ptr = io_u->buf; |
6b9cea23 JA |
502 | |
503 | while ((void *) ptr - io_u->buf < max_bs) { | |
504 | *ptr = rand() * 0x9e370001; | |
505 | ptr++; | |
506 | } | |
507 | } | |
508 | ||
ebac4655 JA |
509 | static int init_io_u(struct thread_data *td) |
510 | { | |
511 | struct io_u *io_u; | |
a00735e6 | 512 | unsigned int max_bs; |
ebac4655 JA |
513 | int i, max_units; |
514 | char *p; | |
515 | ||
2866c82d | 516 | if (td->io_ops->flags & FIO_CPUIO) |
b990b5c0 JA |
517 | return 0; |
518 | ||
2866c82d | 519 | if (td->io_ops->flags & FIO_SYNCIO) |
ebac4655 JA |
520 | max_units = 1; |
521 | else | |
522 | max_units = td->iodepth; | |
523 | ||
a00735e6 | 524 | max_bs = max(td->max_bs[DDIR_READ], td->max_bs[DDIR_WRITE]); |
74b025b0 JA |
525 | td->orig_buffer_size = max_bs * max_units; |
526 | ||
d0bdaf49 | 527 | if (td->mem_type == MEM_SHMHUGE || td->mem_type == MEM_MMAPHUGE) |
56bb17f2 | 528 | td->orig_buffer_size = (td->orig_buffer_size + td->hugepage_size - 1) & ~(td->hugepage_size - 1); |
74b025b0 | 529 | else |
29d610e1 | 530 | td->orig_buffer_size += page_mask; |
ebac4655 | 531 | |
2f9ade3c JA |
532 | if (allocate_io_mem(td)) |
533 | return 1; | |
ebac4655 | 534 | |
ebac4655 JA |
535 | p = ALIGN(td->orig_buffer); |
536 | for (i = 0; i < max_units; i++) { | |
537 | io_u = malloc(sizeof(*io_u)); | |
538 | memset(io_u, 0, sizeof(*io_u)); | |
539 | INIT_LIST_HEAD(&io_u->list); | |
540 | ||
a00735e6 | 541 | io_u->buf = p + max_bs * i; |
6b9cea23 | 542 | if (td_write(td) || td_rw(td)) |
a00735e6 | 543 | fill_rand_buf(io_u, max_bs); |
6b9cea23 | 544 | |
b1ff3403 | 545 | io_u->index = i; |
ebac4655 JA |
546 | list_add(&io_u->list, &td->io_u_freelist); |
547 | } | |
548 | ||
549 | return 0; | |
550 | } | |
551 | ||
da86774e JA |
552 | static int switch_ioscheduler(struct thread_data *td) |
553 | { | |
554 | char tmp[256], tmp2[128]; | |
555 | FILE *f; | |
556 | int ret; | |
557 | ||
f48b467c JA |
558 | if (td->io_ops->flags & FIO_CPUIO) |
559 | return 0; | |
560 | ||
da86774e JA |
561 | sprintf(tmp, "%s/queue/scheduler", td->sysfs_root); |
562 | ||
563 | f = fopen(tmp, "r+"); | |
564 | if (!f) { | |
565 | td_verror(td, errno); | |
566 | return 1; | |
567 | } | |
568 | ||
569 | /* | |
570 | * Set io scheduler. | |
571 | */ | |
572 | ret = fwrite(td->ioscheduler, strlen(td->ioscheduler), 1, f); | |
573 | if (ferror(f) || ret != 1) { | |
574 | td_verror(td, errno); | |
575 | fclose(f); | |
576 | return 1; | |
577 | } | |
578 | ||
579 | rewind(f); | |
580 | ||
581 | /* | |
582 | * Read back and check that the selected scheduler is now the default. | |
583 | */ | |
584 | ret = fread(tmp, 1, sizeof(tmp), f); | |
585 | if (ferror(f) || ret < 0) { | |
586 | td_verror(td, errno); | |
587 | fclose(f); | |
588 | return 1; | |
589 | } | |
590 | ||
591 | sprintf(tmp2, "[%s]", td->ioscheduler); | |
592 | if (!strstr(tmp, tmp2)) { | |
3b70d7e5 | 593 | log_err("fio: io scheduler %s not found\n", td->ioscheduler); |
da86774e JA |
594 | td_verror(td, EINVAL); |
595 | fclose(f); | |
596 | return 1; | |
597 | } | |
598 | ||
599 | fclose(f); | |
600 | return 0; | |
601 | } | |
602 | ||
ebac4655 JA |
603 | static void clear_io_state(struct thread_data *td) |
604 | { | |
53cdc686 JA |
605 | struct fio_file *f; |
606 | int i; | |
ebac4655 | 607 | |
079ad09b | 608 | td->ts.stat_io_bytes[0] = td->ts.stat_io_bytes[1] = 0; |
ebac4655 | 609 | td->this_io_bytes[0] = td->this_io_bytes[1] = 0; |
20dc95c4 | 610 | td->zone_bytes = 0; |
ebac4655 | 611 | |
c1324df1 JA |
612 | td->last_was_sync = 0; |
613 | ||
53cdc686 | 614 | for_each_file(td, f, i) { |
c1324df1 JA |
615 | f->last_completed_pos = 0; |
616 | ||
53cdc686 JA |
617 | f->last_pos = 0; |
618 | if (td->io_ops->flags & FIO_SYNCIO) | |
619 | lseek(f->fd, SEEK_SET, 0); | |
620 | ||
621 | if (f->file_map) | |
622 | memset(f->file_map, 0, f->num_maps * sizeof(long)); | |
623 | } | |
ebac4655 JA |
624 | } |
625 | ||
906c8d75 JA |
626 | /* |
627 | * Entry point for the thread based jobs. The process based jobs end up | |
628 | * here as well, after a little setup. | |
629 | */ | |
ebac4655 JA |
630 | static void *thread_main(void *data) |
631 | { | |
69008999 | 632 | unsigned long long runtime[2]; |
ebac4655 | 633 | struct thread_data *td = data; |
ebac4655 JA |
634 | |
635 | if (!td->use_thread) | |
636 | setsid(); | |
637 | ||
638 | td->pid = getpid(); | |
639 | ||
aea47d44 JA |
640 | INIT_LIST_HEAD(&td->io_u_freelist); |
641 | INIT_LIST_HEAD(&td->io_u_busylist); | |
755200a3 | 642 | INIT_LIST_HEAD(&td->io_u_requeues); |
aea47d44 JA |
643 | INIT_LIST_HEAD(&td->io_hist_list); |
644 | INIT_LIST_HEAD(&td->io_log_list); | |
645 | ||
ebac4655 JA |
646 | if (init_io_u(td)) |
647 | goto err; | |
648 | ||
649 | if (fio_setaffinity(td) == -1) { | |
650 | td_verror(td, errno); | |
651 | goto err; | |
652 | } | |
653 | ||
aea47d44 JA |
654 | if (init_iolog(td)) |
655 | goto err; | |
656 | ||
ebac4655 JA |
657 | if (td->ioprio) { |
658 | if (ioprio_set(IOPRIO_WHO_PROCESS, 0, td->ioprio) == -1) { | |
659 | td_verror(td, errno); | |
660 | goto err; | |
661 | } | |
662 | } | |
663 | ||
1056eaad | 664 | if (nice(td->nice) == -1) { |
b6f4d880 JA |
665 | td_verror(td, errno); |
666 | goto err; | |
667 | } | |
668 | ||
75154845 JA |
669 | if (init_random_state(td)) |
670 | goto err; | |
671 | ||
56f9498d JA |
672 | if (td->ioscheduler && switch_ioscheduler(td)) |
673 | goto err; | |
da86774e | 674 | |
75154845 | 675 | td_set_runstate(td, TD_INITIALIZED); |
bbfd6b00 JA |
676 | fio_sem_up(&startup_sem); |
677 | fio_sem_down(&td->mutex); | |
ebac4655 | 678 | |
53cdc686 | 679 | if (!td->create_serialize && setup_files(td)) |
ebac4655 | 680 | goto err; |
21972cde JA |
681 | if (open_files(td)) |
682 | goto err; | |
ebac4655 | 683 | |
7d6c5283 JA |
684 | /* |
685 | * Do this late, as some IO engines would like to have the | |
686 | * files setup prior to initializing structures. | |
687 | */ | |
688 | if (td_io_init(td)) | |
689 | goto err; | |
690 | ||
69cfd7e0 JA |
691 | if (td->exec_prerun) { |
692 | if (system(td->exec_prerun) < 0) | |
693 | goto err; | |
694 | } | |
4e0ba8af | 695 | |
69008999 | 696 | fio_gettime(&td->epoch, NULL); |
079ad09b | 697 | getrusage(RUSAGE_SELF, &td->ts.ru_start); |
69008999 JA |
698 | |
699 | runtime[0] = runtime[1] = 0; | |
ebac4655 | 700 | while (td->loops--) { |
02bcaa8c | 701 | fio_gettime(&td->start, NULL); |
079ad09b | 702 | memcpy(&td->ts.stat_sample_time, &td->start, sizeof(td->start)); |
ebac4655 JA |
703 | |
704 | if (td->ratemin) | |
079ad09b | 705 | memcpy(&td->lastrate, &td->ts.stat_sample_time, sizeof(td->lastrate)); |
ebac4655 JA |
706 | |
707 | clear_io_state(td); | |
708 | prune_io_piece_log(td); | |
709 | ||
2866c82d | 710 | if (td->io_ops->flags & FIO_CPUIO) |
b990b5c0 JA |
711 | do_cpuio(td); |
712 | else | |
713 | do_io(td); | |
ebac4655 | 714 | |
69008999 | 715 | runtime[td->ddir] += utime_since_now(&td->start); |
aea47d44 | 716 | if (td_rw(td) && td->io_bytes[td->ddir ^ 1]) |
69008999 | 717 | runtime[td->ddir ^ 1] = runtime[td->ddir]; |
3d60d1ed | 718 | |
ebac4655 JA |
719 | if (td->error || td->terminate) |
720 | break; | |
721 | ||
722 | if (td->verify == VERIFY_NONE) | |
723 | continue; | |
724 | ||
725 | clear_io_state(td); | |
02bcaa8c | 726 | fio_gettime(&td->start, NULL); |
ebac4655 JA |
727 | |
728 | do_verify(td); | |
729 | ||
69008999 | 730 | runtime[DDIR_READ] += utime_since_now(&td->start); |
ebac4655 JA |
731 | |
732 | if (td->error || td->terminate) | |
733 | break; | |
734 | } | |
735 | ||
36dff966 | 736 | update_rusage_stat(td); |
69008999 JA |
737 | fio_gettime(&td->end_time, NULL); |
738 | td->runtime[0] = runtime[0] / 1000; | |
739 | td->runtime[1] = runtime[1] / 1000; | |
740 | ||
079ad09b JA |
741 | if (td->ts.bw_log) |
742 | finish_log(td, td->ts.bw_log, "bw"); | |
743 | if (td->ts.slat_log) | |
744 | finish_log(td, td->ts.slat_log, "slat"); | |
745 | if (td->ts.clat_log) | |
746 | finish_log(td, td->ts.clat_log, "clat"); | |
076efc7c | 747 | if (td->write_iolog_file) |
843a7413 | 748 | write_iolog_close(td); |
69cfd7e0 JA |
749 | if (td->exec_postrun) { |
750 | if (system(td->exec_postrun) < 0) | |
751 | log_err("fio: postrun %s failed\n", td->exec_postrun); | |
752 | } | |
ebac4655 JA |
753 | |
754 | if (exitall_on_terminate) | |
6ce15a32 | 755 | terminate_threads(td->groupid, 0); |
ebac4655 JA |
756 | |
757 | err: | |
5bf13a5a JA |
758 | if (td->error) |
759 | printf("fio: pid=%d, err=%d/%s\n", td->pid, td->error, td->verror); | |
53cdc686 | 760 | close_files(td); |
2866c82d | 761 | close_ioengine(td); |
ebac4655 | 762 | cleanup_io_u(td); |
ebac4655 | 763 | td_set_runstate(td, TD_EXITED); |
a6418147 | 764 | return (void *) td->error; |
ebac4655 JA |
765 | } |
766 | ||
906c8d75 JA |
767 | /* |
768 | * We cannot pass the td data into a forked process, so attach the td and | |
769 | * pass it to the thread worker. | |
770 | */ | |
a6418147 | 771 | static int fork_main(int shmid, int offset) |
ebac4655 JA |
772 | { |
773 | struct thread_data *td; | |
a6418147 | 774 | void *data, *ret; |
ebac4655 JA |
775 | |
776 | data = shmat(shmid, NULL, 0); | |
777 | if (data == (void *) -1) { | |
a6418147 JA |
778 | int __err = errno; |
779 | ||
ebac4655 | 780 | perror("shmat"); |
a6418147 | 781 | return __err; |
ebac4655 JA |
782 | } |
783 | ||
784 | td = data + offset * sizeof(struct thread_data); | |
a6418147 | 785 | ret = thread_main(td); |
ebac4655 | 786 | shmdt(data); |
a6418147 | 787 | return (int) ret; |
ebac4655 JA |
788 | } |
789 | ||
906c8d75 JA |
790 | /* |
791 | * Run over the job map and reap the threads that have exited, if any. | |
792 | */ | |
ebac4655 JA |
793 | static void reap_threads(int *nr_running, int *t_rate, int *m_rate) |
794 | { | |
34572e28 | 795 | struct thread_data *td; |
fab6aa71 | 796 | int i, cputhreads, pending, status, ret; |
ebac4655 JA |
797 | |
798 | /* | |
799 | * reap exited threads (TD_EXITED -> TD_REAPED) | |
800 | */ | |
4d2413c6 | 801 | pending = cputhreads = 0; |
34572e28 | 802 | for_each_td(td, i) { |
84585003 JA |
803 | /* |
804 | * ->io_ops is NULL for a thread that has closed its | |
805 | * io engine | |
806 | */ | |
807 | if (td->io_ops && td->io_ops->flags & FIO_CPUIO) | |
b990b5c0 JA |
808 | cputhreads++; |
809 | ||
fab6aa71 JA |
810 | if (td->runstate < TD_EXITED) { |
811 | /* | |
812 | * check if someone quit or got killed in an unusual way | |
813 | */ | |
814 | ret = waitpid(td->pid, &status, WNOHANG); | |
815 | if (ret < 0) | |
816 | perror("waitpid"); | |
817 | else if ((ret == td->pid) && WIFSIGNALED(status)) { | |
818 | int sig = WTERMSIG(status); | |
819 | ||
820 | log_err("fio: pid=%d, got signal=%d\n", td->pid, sig); | |
821 | td_set_runstate(td, TD_REAPED); | |
822 | goto reaped; | |
823 | } | |
824 | } | |
825 | ||
4d2413c6 JA |
826 | if (td->runstate != TD_EXITED) { |
827 | if (td->runstate < TD_RUNNING) | |
828 | pending++; | |
829 | ||
ebac4655 | 830 | continue; |
4d2413c6 | 831 | } |
ebac4655 | 832 | |
437c9b71 JA |
833 | if (td->error) |
834 | exit_value++; | |
835 | ||
ebac4655 JA |
836 | td_set_runstate(td, TD_REAPED); |
837 | ||
838 | if (td->use_thread) { | |
839 | long ret; | |
840 | ||
841 | if (pthread_join(td->thread, (void *) &ret)) | |
842 | perror("thread_join"); | |
a6418147 JA |
843 | } else { |
844 | int status; | |
845 | ||
fab6aa71 JA |
846 | ret = waitpid(td->pid, &status, 0); |
847 | if (ret < 0) | |
848 | perror("waitpid"); | |
73170f19 | 849 | else if (WIFEXITED(status) && WEXITSTATUS(status)) { |
a6418147 JA |
850 | if (!exit_value) |
851 | exit_value++; | |
852 | } | |
853 | } | |
ebac4655 | 854 | |
fab6aa71 | 855 | reaped: |
ebac4655 JA |
856 | (*nr_running)--; |
857 | (*m_rate) -= td->ratemin; | |
858 | (*t_rate) -= td->rate; | |
859 | } | |
b990b5c0 | 860 | |
4d2413c6 | 861 | if (*nr_running == cputhreads && !pending) |
6ce15a32 | 862 | terminate_threads(TERMINATE_ALL, 0); |
ebac4655 JA |
863 | } |
864 | ||
906c8d75 JA |
865 | /* |
866 | * Main function for kicking off and reaping jobs, as needed. | |
867 | */ | |
ebac4655 JA |
868 | static void run_threads(void) |
869 | { | |
ebac4655 JA |
870 | struct thread_data *td; |
871 | unsigned long spent; | |
872 | int i, todo, nr_running, m_rate, t_rate, nr_started; | |
fcb6ade2 | 873 | |
2f9ade3c JA |
874 | if (fio_pin_memory()) |
875 | return; | |
ebac4655 | 876 | |
c6ae0a5b JA |
877 | if (!terse_output) { |
878 | printf("Starting %d thread%s\n", thread_number, thread_number > 1 ? "s" : ""); | |
879 | fflush(stdout); | |
880 | } | |
c04f7ec3 | 881 | |
4efa970e JA |
882 | signal(SIGINT, sig_handler); |
883 | signal(SIGALRM, sig_handler); | |
884 | ||
ebac4655 JA |
885 | todo = thread_number; |
886 | nr_running = 0; | |
887 | nr_started = 0; | |
888 | m_rate = t_rate = 0; | |
889 | ||
34572e28 | 890 | for_each_td(td, i) { |
263e529f | 891 | print_status_init(td->thread_number - 1); |
ebac4655 | 892 | |
380cf265 JA |
893 | if (!td->create_serialize) { |
894 | init_disk_util(td); | |
ebac4655 | 895 | continue; |
380cf265 | 896 | } |
ebac4655 JA |
897 | |
898 | /* | |
899 | * do file setup here so it happens sequentially, | |
900 | * we don't want X number of threads getting their | |
901 | * client data interspersed on disk | |
902 | */ | |
53cdc686 | 903 | if (setup_files(td)) { |
5bf13a5a JA |
904 | exit_value++; |
905 | if (td->error) | |
906 | log_err("fio: pid=%d, err=%d/%s\n", td->pid, td->error, td->verror); | |
ebac4655 JA |
907 | td_set_runstate(td, TD_REAPED); |
908 | todo--; | |
909 | } | |
380cf265 JA |
910 | |
911 | init_disk_util(td); | |
ebac4655 JA |
912 | } |
913 | ||
ebac4655 | 914 | while (todo) { |
75154845 JA |
915 | struct thread_data *map[MAX_JOBS]; |
916 | struct timeval this_start; | |
917 | int this_jobs = 0, left; | |
918 | ||
ebac4655 JA |
919 | /* |
920 | * create threads (TD_NOT_CREATED -> TD_CREATED) | |
921 | */ | |
34572e28 | 922 | for_each_td(td, i) { |
ebac4655 JA |
923 | if (td->runstate != TD_NOT_CREATED) |
924 | continue; | |
925 | ||
926 | /* | |
927 | * never got a chance to start, killed by other | |
928 | * thread for some reason | |
929 | */ | |
930 | if (td->terminate) { | |
931 | todo--; | |
932 | continue; | |
933 | } | |
934 | ||
935 | if (td->start_delay) { | |
263e529f | 936 | spent = mtime_since_genesis(); |
ebac4655 JA |
937 | |
938 | if (td->start_delay * 1000 > spent) | |
939 | continue; | |
940 | } | |
941 | ||
942 | if (td->stonewall && (nr_started || nr_running)) | |
943 | break; | |
944 | ||
75154845 JA |
945 | /* |
946 | * Set state to created. Thread will transition | |
947 | * to TD_INITIALIZED when it's done setting up. | |
948 | */ | |
ebac4655 | 949 | td_set_runstate(td, TD_CREATED); |
75154845 | 950 | map[this_jobs++] = td; |
bbfd6b00 | 951 | fio_sem_init(&startup_sem, 1); |
ebac4655 JA |
952 | nr_started++; |
953 | ||
954 | if (td->use_thread) { | |
955 | if (pthread_create(&td->thread, NULL, thread_main, td)) { | |
956 | perror("thread_create"); | |
957 | nr_started--; | |
958 | } | |
959 | } else { | |
960 | if (fork()) | |
bbfd6b00 | 961 | fio_sem_down(&startup_sem); |
ebac4655 | 962 | else { |
a6418147 JA |
963 | int ret = fork_main(shm_id, i); |
964 | ||
965 | exit(ret); | |
ebac4655 JA |
966 | } |
967 | } | |
968 | } | |
969 | ||
970 | /* | |
75154845 JA |
971 | * Wait for the started threads to transition to |
972 | * TD_INITIALIZED. | |
ebac4655 | 973 | */ |
02bcaa8c | 974 | fio_gettime(&this_start, NULL); |
75154845 | 975 | left = this_jobs; |
6ce15a32 | 976 | while (left && !fio_abort) { |
75154845 JA |
977 | if (mtime_since_now(&this_start) > JOB_START_TIMEOUT) |
978 | break; | |
979 | ||
980 | usleep(100000); | |
981 | ||
982 | for (i = 0; i < this_jobs; i++) { | |
983 | td = map[i]; | |
984 | if (!td) | |
985 | continue; | |
b6f4d880 | 986 | if (td->runstate == TD_INITIALIZED) { |
75154845 JA |
987 | map[i] = NULL; |
988 | left--; | |
b6f4d880 JA |
989 | } else if (td->runstate >= TD_EXITED) { |
990 | map[i] = NULL; | |
991 | left--; | |
992 | todo--; | |
993 | nr_running++; /* work-around... */ | |
75154845 JA |
994 | } |
995 | } | |
996 | } | |
997 | ||
998 | if (left) { | |
3b70d7e5 | 999 | log_err("fio: %d jobs failed to start\n", left); |
75154845 JA |
1000 | for (i = 0; i < this_jobs; i++) { |
1001 | td = map[i]; | |
1002 | if (!td) | |
1003 | continue; | |
1004 | kill(td->pid, SIGTERM); | |
1005 | } | |
1006 | break; | |
1007 | } | |
1008 | ||
1009 | /* | |
b6f4d880 | 1010 | * start created threads (TD_INITIALIZED -> TD_RUNNING). |
75154845 | 1011 | */ |
34572e28 | 1012 | for_each_td(td, i) { |
75154845 | 1013 | if (td->runstate != TD_INITIALIZED) |
ebac4655 JA |
1014 | continue; |
1015 | ||
1016 | td_set_runstate(td, TD_RUNNING); | |
1017 | nr_running++; | |
1018 | nr_started--; | |
1019 | m_rate += td->ratemin; | |
1020 | t_rate += td->rate; | |
75154845 | 1021 | todo--; |
bbfd6b00 | 1022 | fio_sem_up(&td->mutex); |
ebac4655 JA |
1023 | } |
1024 | ||
1025 | reap_threads(&nr_running, &t_rate, &m_rate); | |
1026 | ||
1027 | if (todo) | |
1028 | usleep(100000); | |
1029 | } | |
1030 | ||
1031 | while (nr_running) { | |
1032 | reap_threads(&nr_running, &t_rate, &m_rate); | |
1033 | usleep(10000); | |
1034 | } | |
1035 | ||
1036 | update_io_ticks(); | |
2f9ade3c | 1037 | fio_unpin_memory(); |
ebac4655 JA |
1038 | } |
1039 | ||
ebac4655 JA |
1040 | int main(int argc, char *argv[]) |
1041 | { | |
29d610e1 JA |
1042 | long ps; |
1043 | ||
dbe1125e JA |
1044 | /* |
1045 | * We need locale for number printing, if it isn't set then just | |
1046 | * go with the US format. | |
1047 | */ | |
1048 | if (!getenv("LC_NUMERIC")) | |
1049 | setlocale(LC_NUMERIC, "en_US"); | |
1050 | ||
ebac4655 JA |
1051 | if (parse_options(argc, argv)) |
1052 | return 1; | |
1053 | ||
1054 | if (!thread_number) { | |
3b70d7e5 | 1055 | log_err("Nothing to do\n"); |
ebac4655 JA |
1056 | return 1; |
1057 | } | |
1058 | ||
29d610e1 JA |
1059 | ps = sysconf(_SC_PAGESIZE); |
1060 | if (ps < 0) { | |
1061 | log_err("Failed to get page size\n"); | |
1062 | return 1; | |
1063 | } | |
1064 | ||
1065 | page_mask = ps - 1; | |
1066 | ||
bb3884d8 JA |
1067 | if (write_bw_log) { |
1068 | setup_log(&agg_io_log[DDIR_READ]); | |
1069 | setup_log(&agg_io_log[DDIR_WRITE]); | |
1070 | } | |
1071 | ||
ebac4655 JA |
1072 | disk_util_timer_arm(); |
1073 | ||
1074 | run_threads(); | |
6ce15a32 | 1075 | |
bb3884d8 | 1076 | if (!fio_abort) { |
6ce15a32 | 1077 | show_run_stats(); |
bb3884d8 JA |
1078 | if (write_bw_log) { |
1079 | __finish_log(agg_io_log[DDIR_READ],"agg-read_bw.log"); | |
1080 | __finish_log(agg_io_log[DDIR_WRITE],"agg-write_bw.log"); | |
1081 | } | |
1082 | } | |
ebac4655 | 1083 | |
437c9b71 | 1084 | return exit_value; |
ebac4655 | 1085 | } |