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 | */ | |
b2fdda43 JA |
152 | r = io_u_queued_complete(td, 0, NULL); |
153 | if (r < 0) | |
154 | return; | |
ebac4655 JA |
155 | |
156 | /* | |
157 | * now cancel remaining active events | |
158 | */ | |
2866c82d | 159 | if (td->io_ops->cancel) { |
ebac4655 JA |
160 | list_for_each_safe(entry, n, &td->io_u_busylist) { |
161 | io_u = list_entry(entry, struct io_u, list); | |
162 | ||
0c6e7517 JA |
163 | /* |
164 | * if the io_u isn't in flight, then that generally | |
165 | * means someone leaked an io_u. complain but fix | |
166 | * it up, so we don't stall here. | |
167 | */ | |
168 | if ((io_u->flags & IO_U_F_FLIGHT) == 0) { | |
169 | log_err("fio: non-busy IO on busy list\n"); | |
ebac4655 | 170 | put_io_u(td, io_u); |
0c6e7517 JA |
171 | } else { |
172 | r = td->io_ops->cancel(td, io_u); | |
173 | if (!r) | |
174 | put_io_u(td, io_u); | |
175 | } | |
ebac4655 JA |
176 | } |
177 | } | |
178 | ||
97601024 | 179 | if (td->cur_depth) |
b2fdda43 | 180 | r = io_u_queued_complete(td, td->cur_depth, NULL); |
ebac4655 JA |
181 | } |
182 | ||
858a3d47 JA |
183 | /* |
184 | * Helper to handle the final sync of a file. Works just like the normal | |
185 | * io path, just does everything sync. | |
186 | */ | |
187 | static int fio_io_sync(struct thread_data *td, struct fio_file *f) | |
188 | { | |
189 | struct io_u *io_u = __get_io_u(td); | |
858a3d47 JA |
190 | int ret; |
191 | ||
192 | if (!io_u) | |
193 | return 1; | |
194 | ||
195 | io_u->ddir = DDIR_SYNC; | |
196 | io_u->file = f; | |
197 | ||
198 | if (td_io_prep(td, io_u)) { | |
199 | put_io_u(td, io_u); | |
200 | return 1; | |
201 | } | |
202 | ||
755200a3 | 203 | requeue: |
858a3d47 | 204 | ret = td_io_queue(td, io_u); |
36167d82 | 205 | if (ret < 0) { |
353a7e0e | 206 | td_verror(td, io_u->error); |
858a3d47 | 207 | put_io_u(td, io_u); |
858a3d47 | 208 | return 1; |
36167d82 | 209 | } else if (ret == FIO_Q_QUEUED) { |
49db69aa | 210 | if (io_u_queued_complete(td, 1, NULL) < 0) |
36167d82 | 211 | return 1; |
36167d82 JA |
212 | } else if (ret == FIO_Q_COMPLETED) { |
213 | if (io_u->error) { | |
214 | td_verror(td, io_u->error); | |
215 | return 1; | |
216 | } | |
858a3d47 | 217 | |
b2fdda43 JA |
218 | if (io_u_sync_complete(td, io_u, NULL) < 0) |
219 | return 1; | |
755200a3 JA |
220 | } else if (ret == FIO_Q_BUSY) { |
221 | if (td_io_commit(td)) | |
222 | return 1; | |
223 | goto requeue; | |
858a3d47 JA |
224 | } |
225 | ||
226 | return 0; | |
227 | } | |
228 | ||
906c8d75 JA |
229 | /* |
230 | * The main verify engine. Runs over the writes we previusly submitted, | |
231 | * reads the blocks back in, and checks the crc/md5 of the data. | |
232 | */ | |
1e97cce9 | 233 | static void do_verify(struct thread_data *td) |
ebac4655 | 234 | { |
53cdc686 | 235 | struct fio_file *f; |
36167d82 | 236 | struct io_u *io_u; |
3af6ef39 | 237 | int ret, i, min_events; |
e5b401d4 JA |
238 | |
239 | /* | |
240 | * sync io first and invalidate cache, to make sure we really | |
241 | * read from disk. | |
242 | */ | |
243 | for_each_file(td, f, i) { | |
b2fdda43 JA |
244 | if (fio_io_sync(td, f)) |
245 | break; | |
246 | if (file_invalidate_cache(td, f)) | |
247 | break; | |
e5b401d4 | 248 | } |
ebac4655 | 249 | |
b2fdda43 JA |
250 | if (td->error) |
251 | return; | |
252 | ||
ebac4655 JA |
253 | td_set_runstate(td, TD_VERIFYING); |
254 | ||
36167d82 JA |
255 | io_u = NULL; |
256 | while (!td->terminate) { | |
ebac4655 JA |
257 | io_u = __get_io_u(td); |
258 | if (!io_u) | |
259 | break; | |
260 | ||
069c2918 JA |
261 | if (runtime_exceeded(td, &io_u->start_time)) { |
262 | put_io_u(td, io_u); | |
02bcaa8c | 263 | break; |
069c2918 | 264 | } |
02bcaa8c | 265 | |
069c2918 JA |
266 | if (get_next_verify(td, io_u)) { |
267 | put_io_u(td, io_u); | |
ebac4655 | 268 | break; |
069c2918 | 269 | } |
ebac4655 | 270 | |
069c2918 JA |
271 | if (td_io_prep(td, io_u)) { |
272 | put_io_u(td, io_u); | |
53cdc686 | 273 | break; |
069c2918 | 274 | } |
36167d82 JA |
275 | requeue: |
276 | ret = td_io_queue(td, io_u); | |
53cdc686 | 277 | |
36167d82 JA |
278 | switch (ret) { |
279 | case FIO_Q_COMPLETED: | |
280 | if (io_u->error) | |
22819ec2 | 281 | ret = -io_u->error; |
36167d82 JA |
282 | if (io_u->xfer_buflen != io_u->resid && io_u->resid) { |
283 | int bytes = io_u->xfer_buflen - io_u->resid; | |
ebac4655 | 284 | |
36167d82 JA |
285 | io_u->xfer_buflen = io_u->resid; |
286 | io_u->xfer_buf += bytes; | |
287 | goto requeue; | |
288 | } | |
99784632 | 289 | ret = io_u_sync_complete(td, io_u, verify_io_u); |
49db69aa | 290 | if (ret < 0) |
36167d82 | 291 | break; |
36167d82 JA |
292 | continue; |
293 | case FIO_Q_QUEUED: | |
294 | break; | |
755200a3 JA |
295 | case FIO_Q_BUSY: |
296 | requeue_io_u(td, &io_u); | |
297 | ret = td_io_commit(td); | |
298 | break; | |
36167d82 JA |
299 | default: |
300 | assert(ret < 0); | |
22819ec2 | 301 | td_verror(td, -ret); |
ebac4655 JA |
302 | break; |
303 | } | |
304 | ||
99784632 | 305 | if (ret < 0 || td->error) |
3af6ef39 JA |
306 | break; |
307 | ||
ebac4655 | 308 | /* |
3af6ef39 JA |
309 | * if we can queue more, do so. but check if there are |
310 | * completed io_u's first. | |
ebac4655 | 311 | */ |
97601024 | 312 | min_events = 0; |
e916b390 | 313 | if (queue_full(td) || ret == FIO_Q_BUSY) { |
3af6ef39 | 314 | min_events = 1; |
3af6ef39 | 315 | |
e916b390 JA |
316 | if (td->cur_depth > td->iodepth_low) |
317 | min_events = td->cur_depth - td->iodepth_low; | |
318 | } | |
319 | ||
3af6ef39 JA |
320 | /* |
321 | * Reap required number of io units, if any, and do the | |
322 | * verification on them through the callback handler | |
323 | */ | |
49db69aa | 324 | if (io_u_queued_complete(td, min_events, verify_io_u) < 0) |
ebac4655 | 325 | break; |
36167d82 | 326 | } |
ebac4655 | 327 | |
ebac4655 JA |
328 | if (td->cur_depth) |
329 | cleanup_pending_aio(td); | |
330 | ||
331 | td_set_runstate(td, TD_RUNNING); | |
332 | } | |
333 | ||
b990b5c0 JA |
334 | /* |
335 | * Not really an io thread, all it does is burn CPU cycles in the specified | |
336 | * manner. | |
337 | */ | |
338 | static void do_cpuio(struct thread_data *td) | |
339 | { | |
340 | struct timeval e; | |
341 | int split = 100 / td->cpuload; | |
342 | int i = 0; | |
343 | ||
344 | while (!td->terminate) { | |
02bcaa8c | 345 | fio_gettime(&e, NULL); |
b990b5c0 JA |
346 | |
347 | if (runtime_exceeded(td, &e)) | |
348 | break; | |
349 | ||
350 | if (!(i % split)) | |
351 | __usec_sleep(10000); | |
352 | else | |
353 | usec_sleep(td, 10000); | |
354 | ||
355 | i++; | |
356 | } | |
357 | } | |
358 | ||
32cd46a0 | 359 | /* |
906c8d75 | 360 | * Main IO worker function. It retrieves io_u's to process and queues |
32cd46a0 JA |
361 | * and reaps them, checking for rate and errors along the way. |
362 | */ | |
ebac4655 JA |
363 | static void do_io(struct thread_data *td) |
364 | { | |
02bcaa8c | 365 | struct timeval s; |
ebac4655 | 366 | unsigned long usec; |
84585003 | 367 | int i, ret = 0; |
ebac4655 | 368 | |
5853e5a8 JA |
369 | td_set_runstate(td, TD_RUNNING); |
370 | ||
3951414d | 371 | while ((td->this_io_bytes[0] + td->this_io_bytes[1]) < td->io_size) { |
97601024 JA |
372 | struct timeval comp_time; |
373 | long bytes_done = 0; | |
84585003 | 374 | int min_evts = 0; |
ebac4655 JA |
375 | struct io_u *io_u; |
376 | ||
377 | if (td->terminate) | |
378 | break; | |
379 | ||
3d7c391d | 380 | io_u = get_io_u(td); |
ebac4655 JA |
381 | if (!io_u) |
382 | break; | |
383 | ||
384 | memcpy(&s, &io_u->start_time, sizeof(s)); | |
97601024 JA |
385 | |
386 | if (runtime_exceeded(td, &s)) { | |
387 | put_io_u(td, io_u); | |
388 | break; | |
389 | } | |
cec6b55d | 390 | requeue: |
45bee283 | 391 | ret = td_io_queue(td, io_u); |
36167d82 JA |
392 | |
393 | switch (ret) { | |
394 | case FIO_Q_COMPLETED: | |
395 | if (io_u->error) { | |
396 | ret = io_u->error; | |
397 | break; | |
398 | } | |
399 | if (io_u->xfer_buflen != io_u->resid && io_u->resid) { | |
400 | int bytes = io_u->xfer_buflen - io_u->resid; | |
401 | ||
cec6b55d | 402 | io_u->xfer_buflen = io_u->resid; |
36167d82 | 403 | io_u->xfer_buf += bytes; |
cec6b55d | 404 | goto requeue; |
cec6b55d | 405 | } |
97601024 JA |
406 | fio_gettime(&comp_time, NULL); |
407 | bytes_done = io_u_sync_complete(td, io_u, NULL); | |
99784632 JA |
408 | if (bytes_done < 0) |
409 | ret = bytes_done; | |
36167d82 JA |
410 | break; |
411 | case FIO_Q_QUEUED: | |
7e77dd02 JA |
412 | /* |
413 | * if the engine doesn't have a commit hook, | |
414 | * the io_u is really queued. if it does have such | |
415 | * a hook, it has to call io_u_queued() itself. | |
416 | */ | |
417 | if (td->io_ops->commit == NULL) | |
418 | io_u_queued(td, io_u); | |
36167d82 | 419 | break; |
755200a3 JA |
420 | case FIO_Q_BUSY: |
421 | requeue_io_u(td, &io_u); | |
422 | ret = td_io_commit(td); | |
423 | break; | |
36167d82 JA |
424 | default: |
425 | assert(ret < 0); | |
426 | put_io_u(td, io_u); | |
427 | break; | |
ebac4655 JA |
428 | } |
429 | ||
99784632 | 430 | if (ret < 0 || td->error) |
36167d82 JA |
431 | break; |
432 | ||
97601024 JA |
433 | /* |
434 | * See if we need to complete some commands | |
435 | */ | |
755200a3 | 436 | if (ret == FIO_Q_QUEUED || ret == FIO_Q_BUSY) { |
97601024 | 437 | min_evts = 0; |
e916b390 | 438 | if (queue_full(td) || ret == FIO_Q_BUSY) { |
36167d82 | 439 | min_evts = 1; |
ebac4655 | 440 | |
e916b390 JA |
441 | if (td->cur_depth > td->iodepth_low) |
442 | min_evts = td->cur_depth - td->iodepth_low; | |
443 | } | |
444 | ||
97601024 JA |
445 | fio_gettime(&comp_time, NULL); |
446 | bytes_done = io_u_queued_complete(td, min_evts, NULL); | |
447 | if (bytes_done < 0) | |
36167d82 | 448 | break; |
ebac4655 JA |
449 | } |
450 | ||
97601024 JA |
451 | if (!bytes_done) |
452 | continue; | |
453 | ||
ebac4655 JA |
454 | /* |
455 | * the rate is batched for now, it should work for batches | |
456 | * of completions except the very first one which may look | |
457 | * a little bursty | |
458 | */ | |
97601024 | 459 | usec = utime_since(&s, &comp_time); |
ebac4655 | 460 | |
97601024 | 461 | rate_throttle(td, usec, bytes_done, td->ddir); |
ebac4655 | 462 | |
97601024 | 463 | if (check_min_rate(td, &comp_time)) { |
98aa62d8 | 464 | if (exitall_on_terminate) |
6ce15a32 | 465 | terminate_threads(td->groupid, 0); |
fd841467 | 466 | td_verror(td, ENODATA); |
ebac4655 JA |
467 | break; |
468 | } | |
469 | ||
9c1f7434 JA |
470 | if (td->thinktime) { |
471 | unsigned long long b; | |
472 | ||
473 | b = td->io_blocks[0] + td->io_blocks[1]; | |
48097d5c JA |
474 | if (!(b % td->thinktime_blocks)) { |
475 | int left; | |
476 | ||
477 | if (td->thinktime_spin) | |
478 | __usec_sleep(td->thinktime_spin); | |
479 | ||
480 | left = td->thinktime - td->thinktime_spin; | |
481 | if (left) | |
482 | usec_sleep(td, left); | |
483 | } | |
9c1f7434 | 484 | } |
ebac4655 JA |
485 | } |
486 | ||
4d2413c6 | 487 | if (!td->error) { |
3d7c391d JA |
488 | struct fio_file *f; |
489 | ||
84585003 JA |
490 | if (td->cur_depth) |
491 | cleanup_pending_aio(td); | |
ebac4655 | 492 | |
84585003 JA |
493 | if (should_fsync(td) && td->end_fsync) { |
494 | td_set_runstate(td, TD_FSYNCING); | |
495 | for_each_file(td, f, i) | |
858a3d47 | 496 | fio_io_sync(td, f); |
84585003 | 497 | } |
5853e5a8 | 498 | } |
ebac4655 JA |
499 | } |
500 | ||
ebac4655 JA |
501 | static void cleanup_io_u(struct thread_data *td) |
502 | { | |
503 | struct list_head *entry, *n; | |
504 | struct io_u *io_u; | |
505 | ||
506 | list_for_each_safe(entry, n, &td->io_u_freelist) { | |
507 | io_u = list_entry(entry, struct io_u, list); | |
508 | ||
509 | list_del(&io_u->list); | |
510 | free(io_u); | |
511 | } | |
512 | ||
2f9ade3c | 513 | free_io_mem(td); |
ebac4655 JA |
514 | } |
515 | ||
6b9cea23 JA |
516 | /* |
517 | * "randomly" fill the buffer contents | |
518 | */ | |
66eeb296 | 519 | static void fill_rand_buf(struct io_u *io_u, int max_bs) |
6b9cea23 | 520 | { |
66eeb296 | 521 | int *ptr = io_u->buf; |
6b9cea23 JA |
522 | |
523 | while ((void *) ptr - io_u->buf < max_bs) { | |
524 | *ptr = rand() * 0x9e370001; | |
525 | ptr++; | |
526 | } | |
527 | } | |
528 | ||
ebac4655 JA |
529 | static int init_io_u(struct thread_data *td) |
530 | { | |
531 | struct io_u *io_u; | |
a00735e6 | 532 | unsigned int max_bs; |
ebac4655 JA |
533 | int i, max_units; |
534 | char *p; | |
535 | ||
2866c82d | 536 | if (td->io_ops->flags & FIO_CPUIO) |
b990b5c0 JA |
537 | return 0; |
538 | ||
2866c82d | 539 | if (td->io_ops->flags & FIO_SYNCIO) |
ebac4655 JA |
540 | max_units = 1; |
541 | else | |
542 | max_units = td->iodepth; | |
543 | ||
a00735e6 | 544 | max_bs = max(td->max_bs[DDIR_READ], td->max_bs[DDIR_WRITE]); |
74b025b0 JA |
545 | td->orig_buffer_size = max_bs * max_units; |
546 | ||
d0bdaf49 | 547 | if (td->mem_type == MEM_SHMHUGE || td->mem_type == MEM_MMAPHUGE) |
56bb17f2 | 548 | td->orig_buffer_size = (td->orig_buffer_size + td->hugepage_size - 1) & ~(td->hugepage_size - 1); |
74b025b0 | 549 | else |
29d610e1 | 550 | td->orig_buffer_size += page_mask; |
ebac4655 | 551 | |
2f9ade3c JA |
552 | if (allocate_io_mem(td)) |
553 | return 1; | |
ebac4655 | 554 | |
ebac4655 JA |
555 | p = ALIGN(td->orig_buffer); |
556 | for (i = 0; i < max_units; i++) { | |
557 | io_u = malloc(sizeof(*io_u)); | |
558 | memset(io_u, 0, sizeof(*io_u)); | |
559 | INIT_LIST_HEAD(&io_u->list); | |
560 | ||
a00735e6 | 561 | io_u->buf = p + max_bs * i; |
6b9cea23 | 562 | if (td_write(td) || td_rw(td)) |
a00735e6 | 563 | fill_rand_buf(io_u, max_bs); |
6b9cea23 | 564 | |
b1ff3403 | 565 | io_u->index = i; |
0c6e7517 | 566 | io_u->flags = IO_U_F_FREE; |
ebac4655 JA |
567 | list_add(&io_u->list, &td->io_u_freelist); |
568 | } | |
569 | ||
570 | return 0; | |
571 | } | |
572 | ||
da86774e JA |
573 | static int switch_ioscheduler(struct thread_data *td) |
574 | { | |
575 | char tmp[256], tmp2[128]; | |
576 | FILE *f; | |
577 | int ret; | |
578 | ||
f48b467c JA |
579 | if (td->io_ops->flags & FIO_CPUIO) |
580 | return 0; | |
581 | ||
da86774e JA |
582 | sprintf(tmp, "%s/queue/scheduler", td->sysfs_root); |
583 | ||
584 | f = fopen(tmp, "r+"); | |
585 | if (!f) { | |
586 | td_verror(td, errno); | |
587 | return 1; | |
588 | } | |
589 | ||
590 | /* | |
591 | * Set io scheduler. | |
592 | */ | |
593 | ret = fwrite(td->ioscheduler, strlen(td->ioscheduler), 1, f); | |
594 | if (ferror(f) || ret != 1) { | |
595 | td_verror(td, errno); | |
596 | fclose(f); | |
597 | return 1; | |
598 | } | |
599 | ||
600 | rewind(f); | |
601 | ||
602 | /* | |
603 | * Read back and check that the selected scheduler is now the default. | |
604 | */ | |
605 | ret = fread(tmp, 1, sizeof(tmp), f); | |
606 | if (ferror(f) || ret < 0) { | |
607 | td_verror(td, errno); | |
608 | fclose(f); | |
609 | return 1; | |
610 | } | |
611 | ||
612 | sprintf(tmp2, "[%s]", td->ioscheduler); | |
613 | if (!strstr(tmp, tmp2)) { | |
3b70d7e5 | 614 | log_err("fio: io scheduler %s not found\n", td->ioscheduler); |
da86774e JA |
615 | td_verror(td, EINVAL); |
616 | fclose(f); | |
617 | return 1; | |
618 | } | |
619 | ||
620 | fclose(f); | |
621 | return 0; | |
622 | } | |
623 | ||
ebac4655 JA |
624 | static void clear_io_state(struct thread_data *td) |
625 | { | |
53cdc686 JA |
626 | struct fio_file *f; |
627 | int i; | |
ebac4655 | 628 | |
079ad09b | 629 | td->ts.stat_io_bytes[0] = td->ts.stat_io_bytes[1] = 0; |
ebac4655 | 630 | td->this_io_bytes[0] = td->this_io_bytes[1] = 0; |
20dc95c4 | 631 | td->zone_bytes = 0; |
ebac4655 | 632 | |
c1324df1 JA |
633 | td->last_was_sync = 0; |
634 | ||
53cdc686 | 635 | for_each_file(td, f, i) { |
c1324df1 JA |
636 | f->last_completed_pos = 0; |
637 | ||
53cdc686 JA |
638 | f->last_pos = 0; |
639 | if (td->io_ops->flags & FIO_SYNCIO) | |
640 | lseek(f->fd, SEEK_SET, 0); | |
641 | ||
642 | if (f->file_map) | |
643 | memset(f->file_map, 0, f->num_maps * sizeof(long)); | |
644 | } | |
ebac4655 JA |
645 | } |
646 | ||
906c8d75 JA |
647 | /* |
648 | * Entry point for the thread based jobs. The process based jobs end up | |
649 | * here as well, after a little setup. | |
650 | */ | |
ebac4655 JA |
651 | static void *thread_main(void *data) |
652 | { | |
69008999 | 653 | unsigned long long runtime[2]; |
ebac4655 | 654 | struct thread_data *td = data; |
ebac4655 JA |
655 | |
656 | if (!td->use_thread) | |
657 | setsid(); | |
658 | ||
659 | td->pid = getpid(); | |
660 | ||
aea47d44 JA |
661 | INIT_LIST_HEAD(&td->io_u_freelist); |
662 | INIT_LIST_HEAD(&td->io_u_busylist); | |
755200a3 | 663 | INIT_LIST_HEAD(&td->io_u_requeues); |
aea47d44 JA |
664 | INIT_LIST_HEAD(&td->io_hist_list); |
665 | INIT_LIST_HEAD(&td->io_log_list); | |
666 | ||
ebac4655 JA |
667 | if (init_io_u(td)) |
668 | goto err; | |
669 | ||
670 | if (fio_setaffinity(td) == -1) { | |
671 | td_verror(td, errno); | |
672 | goto err; | |
673 | } | |
674 | ||
aea47d44 JA |
675 | if (init_iolog(td)) |
676 | goto err; | |
677 | ||
ebac4655 JA |
678 | if (td->ioprio) { |
679 | if (ioprio_set(IOPRIO_WHO_PROCESS, 0, td->ioprio) == -1) { | |
680 | td_verror(td, errno); | |
681 | goto err; | |
682 | } | |
683 | } | |
684 | ||
1056eaad | 685 | if (nice(td->nice) == -1) { |
b6f4d880 JA |
686 | td_verror(td, errno); |
687 | goto err; | |
688 | } | |
689 | ||
75154845 JA |
690 | if (init_random_state(td)) |
691 | goto err; | |
692 | ||
56f9498d JA |
693 | if (td->ioscheduler && switch_ioscheduler(td)) |
694 | goto err; | |
da86774e | 695 | |
75154845 | 696 | td_set_runstate(td, TD_INITIALIZED); |
bbfd6b00 JA |
697 | fio_sem_up(&startup_sem); |
698 | fio_sem_down(&td->mutex); | |
ebac4655 | 699 | |
53cdc686 | 700 | if (!td->create_serialize && setup_files(td)) |
ebac4655 | 701 | goto err; |
21972cde JA |
702 | if (open_files(td)) |
703 | goto err; | |
ebac4655 | 704 | |
7d6c5283 JA |
705 | /* |
706 | * Do this late, as some IO engines would like to have the | |
707 | * files setup prior to initializing structures. | |
708 | */ | |
709 | if (td_io_init(td)) | |
710 | goto err; | |
711 | ||
69cfd7e0 JA |
712 | if (td->exec_prerun) { |
713 | if (system(td->exec_prerun) < 0) | |
714 | goto err; | |
715 | } | |
4e0ba8af | 716 | |
69008999 | 717 | fio_gettime(&td->epoch, NULL); |
079ad09b | 718 | getrusage(RUSAGE_SELF, &td->ts.ru_start); |
69008999 JA |
719 | |
720 | runtime[0] = runtime[1] = 0; | |
ebac4655 | 721 | while (td->loops--) { |
02bcaa8c | 722 | fio_gettime(&td->start, NULL); |
079ad09b | 723 | memcpy(&td->ts.stat_sample_time, &td->start, sizeof(td->start)); |
ebac4655 JA |
724 | |
725 | if (td->ratemin) | |
079ad09b | 726 | memcpy(&td->lastrate, &td->ts.stat_sample_time, sizeof(td->lastrate)); |
ebac4655 JA |
727 | |
728 | clear_io_state(td); | |
729 | prune_io_piece_log(td); | |
730 | ||
2866c82d | 731 | if (td->io_ops->flags & FIO_CPUIO) |
b990b5c0 JA |
732 | do_cpuio(td); |
733 | else | |
734 | do_io(td); | |
ebac4655 | 735 | |
69008999 | 736 | runtime[td->ddir] += utime_since_now(&td->start); |
aea47d44 | 737 | if (td_rw(td) && td->io_bytes[td->ddir ^ 1]) |
69008999 | 738 | runtime[td->ddir ^ 1] = runtime[td->ddir]; |
3d60d1ed | 739 | |
ebac4655 JA |
740 | if (td->error || td->terminate) |
741 | break; | |
742 | ||
743 | if (td->verify == VERIFY_NONE) | |
744 | continue; | |
745 | ||
746 | clear_io_state(td); | |
02bcaa8c | 747 | fio_gettime(&td->start, NULL); |
ebac4655 JA |
748 | |
749 | do_verify(td); | |
750 | ||
69008999 | 751 | runtime[DDIR_READ] += utime_since_now(&td->start); |
ebac4655 JA |
752 | |
753 | if (td->error || td->terminate) | |
754 | break; | |
755 | } | |
756 | ||
36dff966 | 757 | update_rusage_stat(td); |
69008999 JA |
758 | fio_gettime(&td->end_time, NULL); |
759 | td->runtime[0] = runtime[0] / 1000; | |
760 | td->runtime[1] = runtime[1] / 1000; | |
761 | ||
079ad09b JA |
762 | if (td->ts.bw_log) |
763 | finish_log(td, td->ts.bw_log, "bw"); | |
764 | if (td->ts.slat_log) | |
765 | finish_log(td, td->ts.slat_log, "slat"); | |
766 | if (td->ts.clat_log) | |
767 | finish_log(td, td->ts.clat_log, "clat"); | |
076efc7c | 768 | if (td->write_iolog_file) |
843a7413 | 769 | write_iolog_close(td); |
69cfd7e0 JA |
770 | if (td->exec_postrun) { |
771 | if (system(td->exec_postrun) < 0) | |
772 | log_err("fio: postrun %s failed\n", td->exec_postrun); | |
773 | } | |
ebac4655 JA |
774 | |
775 | if (exitall_on_terminate) | |
6ce15a32 | 776 | terminate_threads(td->groupid, 0); |
ebac4655 JA |
777 | |
778 | err: | |
5bf13a5a JA |
779 | if (td->error) |
780 | printf("fio: pid=%d, err=%d/%s\n", td->pid, td->error, td->verror); | |
53cdc686 | 781 | close_files(td); |
2866c82d | 782 | close_ioengine(td); |
ebac4655 | 783 | cleanup_io_u(td); |
ebac4655 | 784 | td_set_runstate(td, TD_EXITED); |
43d76807 | 785 | return (void *) (unsigned long) td->error; |
ebac4655 JA |
786 | } |
787 | ||
906c8d75 JA |
788 | /* |
789 | * We cannot pass the td data into a forked process, so attach the td and | |
790 | * pass it to the thread worker. | |
791 | */ | |
a6418147 | 792 | static int fork_main(int shmid, int offset) |
ebac4655 JA |
793 | { |
794 | struct thread_data *td; | |
a6418147 | 795 | void *data, *ret; |
ebac4655 JA |
796 | |
797 | data = shmat(shmid, NULL, 0); | |
798 | if (data == (void *) -1) { | |
a6418147 JA |
799 | int __err = errno; |
800 | ||
ebac4655 | 801 | perror("shmat"); |
a6418147 | 802 | return __err; |
ebac4655 JA |
803 | } |
804 | ||
805 | td = data + offset * sizeof(struct thread_data); | |
a6418147 | 806 | ret = thread_main(td); |
ebac4655 | 807 | shmdt(data); |
43d76807 | 808 | return (int) (unsigned long) ret; |
ebac4655 JA |
809 | } |
810 | ||
906c8d75 JA |
811 | /* |
812 | * Run over the job map and reap the threads that have exited, if any. | |
813 | */ | |
ebac4655 JA |
814 | static void reap_threads(int *nr_running, int *t_rate, int *m_rate) |
815 | { | |
34572e28 | 816 | struct thread_data *td; |
fab6aa71 | 817 | int i, cputhreads, pending, status, ret; |
ebac4655 JA |
818 | |
819 | /* | |
820 | * reap exited threads (TD_EXITED -> TD_REAPED) | |
821 | */ | |
4d2413c6 | 822 | pending = cputhreads = 0; |
34572e28 | 823 | for_each_td(td, i) { |
84585003 JA |
824 | /* |
825 | * ->io_ops is NULL for a thread that has closed its | |
826 | * io engine | |
827 | */ | |
828 | if (td->io_ops && td->io_ops->flags & FIO_CPUIO) | |
b990b5c0 JA |
829 | cputhreads++; |
830 | ||
fab6aa71 JA |
831 | if (td->runstate < TD_EXITED) { |
832 | /* | |
833 | * check if someone quit or got killed in an unusual way | |
834 | */ | |
835 | ret = waitpid(td->pid, &status, WNOHANG); | |
836 | if (ret < 0) | |
837 | perror("waitpid"); | |
838 | else if ((ret == td->pid) && WIFSIGNALED(status)) { | |
839 | int sig = WTERMSIG(status); | |
840 | ||
841 | log_err("fio: pid=%d, got signal=%d\n", td->pid, sig); | |
842 | td_set_runstate(td, TD_REAPED); | |
843 | goto reaped; | |
844 | } | |
845 | } | |
846 | ||
4d2413c6 JA |
847 | if (td->runstate != TD_EXITED) { |
848 | if (td->runstate < TD_RUNNING) | |
849 | pending++; | |
850 | ||
ebac4655 | 851 | continue; |
4d2413c6 | 852 | } |
ebac4655 | 853 | |
437c9b71 JA |
854 | if (td->error) |
855 | exit_value++; | |
856 | ||
ebac4655 JA |
857 | td_set_runstate(td, TD_REAPED); |
858 | ||
859 | if (td->use_thread) { | |
860 | long ret; | |
861 | ||
862 | if (pthread_join(td->thread, (void *) &ret)) | |
863 | perror("thread_join"); | |
a6418147 JA |
864 | } else { |
865 | int status; | |
866 | ||
fab6aa71 JA |
867 | ret = waitpid(td->pid, &status, 0); |
868 | if (ret < 0) | |
869 | perror("waitpid"); | |
73170f19 | 870 | else if (WIFEXITED(status) && WEXITSTATUS(status)) { |
a6418147 JA |
871 | if (!exit_value) |
872 | exit_value++; | |
873 | } | |
874 | } | |
ebac4655 | 875 | |
fab6aa71 | 876 | reaped: |
ebac4655 JA |
877 | (*nr_running)--; |
878 | (*m_rate) -= td->ratemin; | |
879 | (*t_rate) -= td->rate; | |
880 | } | |
b990b5c0 | 881 | |
4d2413c6 | 882 | if (*nr_running == cputhreads && !pending) |
6ce15a32 | 883 | terminate_threads(TERMINATE_ALL, 0); |
ebac4655 JA |
884 | } |
885 | ||
906c8d75 JA |
886 | /* |
887 | * Main function for kicking off and reaping jobs, as needed. | |
888 | */ | |
ebac4655 JA |
889 | static void run_threads(void) |
890 | { | |
ebac4655 JA |
891 | struct thread_data *td; |
892 | unsigned long spent; | |
893 | int i, todo, nr_running, m_rate, t_rate, nr_started; | |
fcb6ade2 | 894 | |
2f9ade3c JA |
895 | if (fio_pin_memory()) |
896 | return; | |
ebac4655 | 897 | |
c6ae0a5b JA |
898 | if (!terse_output) { |
899 | printf("Starting %d thread%s\n", thread_number, thread_number > 1 ? "s" : ""); | |
900 | fflush(stdout); | |
901 | } | |
c04f7ec3 | 902 | |
4efa970e JA |
903 | signal(SIGINT, sig_handler); |
904 | signal(SIGALRM, sig_handler); | |
905 | ||
ebac4655 JA |
906 | todo = thread_number; |
907 | nr_running = 0; | |
908 | nr_started = 0; | |
909 | m_rate = t_rate = 0; | |
910 | ||
34572e28 | 911 | for_each_td(td, i) { |
263e529f | 912 | print_status_init(td->thread_number - 1); |
ebac4655 | 913 | |
380cf265 JA |
914 | if (!td->create_serialize) { |
915 | init_disk_util(td); | |
ebac4655 | 916 | continue; |
380cf265 | 917 | } |
ebac4655 JA |
918 | |
919 | /* | |
920 | * do file setup here so it happens sequentially, | |
921 | * we don't want X number of threads getting their | |
922 | * client data interspersed on disk | |
923 | */ | |
53cdc686 | 924 | if (setup_files(td)) { |
5bf13a5a JA |
925 | exit_value++; |
926 | if (td->error) | |
927 | log_err("fio: pid=%d, err=%d/%s\n", td->pid, td->error, td->verror); | |
ebac4655 JA |
928 | td_set_runstate(td, TD_REAPED); |
929 | todo--; | |
930 | } | |
380cf265 JA |
931 | |
932 | init_disk_util(td); | |
ebac4655 JA |
933 | } |
934 | ||
ebac4655 | 935 | while (todo) { |
75154845 JA |
936 | struct thread_data *map[MAX_JOBS]; |
937 | struct timeval this_start; | |
938 | int this_jobs = 0, left; | |
939 | ||
ebac4655 JA |
940 | /* |
941 | * create threads (TD_NOT_CREATED -> TD_CREATED) | |
942 | */ | |
34572e28 | 943 | for_each_td(td, i) { |
ebac4655 JA |
944 | if (td->runstate != TD_NOT_CREATED) |
945 | continue; | |
946 | ||
947 | /* | |
948 | * never got a chance to start, killed by other | |
949 | * thread for some reason | |
950 | */ | |
951 | if (td->terminate) { | |
952 | todo--; | |
953 | continue; | |
954 | } | |
955 | ||
956 | if (td->start_delay) { | |
263e529f | 957 | spent = mtime_since_genesis(); |
ebac4655 JA |
958 | |
959 | if (td->start_delay * 1000 > spent) | |
960 | continue; | |
961 | } | |
962 | ||
963 | if (td->stonewall && (nr_started || nr_running)) | |
964 | break; | |
965 | ||
75154845 JA |
966 | /* |
967 | * Set state to created. Thread will transition | |
968 | * to TD_INITIALIZED when it's done setting up. | |
969 | */ | |
ebac4655 | 970 | td_set_runstate(td, TD_CREATED); |
75154845 | 971 | map[this_jobs++] = td; |
bbfd6b00 | 972 | fio_sem_init(&startup_sem, 1); |
ebac4655 JA |
973 | nr_started++; |
974 | ||
975 | if (td->use_thread) { | |
976 | if (pthread_create(&td->thread, NULL, thread_main, td)) { | |
977 | perror("thread_create"); | |
978 | nr_started--; | |
979 | } | |
980 | } else { | |
981 | if (fork()) | |
bbfd6b00 | 982 | fio_sem_down(&startup_sem); |
ebac4655 | 983 | else { |
a6418147 JA |
984 | int ret = fork_main(shm_id, i); |
985 | ||
986 | exit(ret); | |
ebac4655 JA |
987 | } |
988 | } | |
989 | } | |
990 | ||
991 | /* | |
75154845 JA |
992 | * Wait for the started threads to transition to |
993 | * TD_INITIALIZED. | |
ebac4655 | 994 | */ |
02bcaa8c | 995 | fio_gettime(&this_start, NULL); |
75154845 | 996 | left = this_jobs; |
6ce15a32 | 997 | while (left && !fio_abort) { |
75154845 JA |
998 | if (mtime_since_now(&this_start) > JOB_START_TIMEOUT) |
999 | break; | |
1000 | ||
1001 | usleep(100000); | |
1002 | ||
1003 | for (i = 0; i < this_jobs; i++) { | |
1004 | td = map[i]; | |
1005 | if (!td) | |
1006 | continue; | |
b6f4d880 | 1007 | if (td->runstate == TD_INITIALIZED) { |
75154845 JA |
1008 | map[i] = NULL; |
1009 | left--; | |
b6f4d880 JA |
1010 | } else if (td->runstate >= TD_EXITED) { |
1011 | map[i] = NULL; | |
1012 | left--; | |
1013 | todo--; | |
1014 | nr_running++; /* work-around... */ | |
75154845 JA |
1015 | } |
1016 | } | |
1017 | } | |
1018 | ||
1019 | if (left) { | |
3b70d7e5 | 1020 | log_err("fio: %d jobs failed to start\n", left); |
75154845 JA |
1021 | for (i = 0; i < this_jobs; i++) { |
1022 | td = map[i]; | |
1023 | if (!td) | |
1024 | continue; | |
1025 | kill(td->pid, SIGTERM); | |
1026 | } | |
1027 | break; | |
1028 | } | |
1029 | ||
1030 | /* | |
b6f4d880 | 1031 | * start created threads (TD_INITIALIZED -> TD_RUNNING). |
75154845 | 1032 | */ |
34572e28 | 1033 | for_each_td(td, i) { |
75154845 | 1034 | if (td->runstate != TD_INITIALIZED) |
ebac4655 JA |
1035 | continue; |
1036 | ||
1037 | td_set_runstate(td, TD_RUNNING); | |
1038 | nr_running++; | |
1039 | nr_started--; | |
1040 | m_rate += td->ratemin; | |
1041 | t_rate += td->rate; | |
75154845 | 1042 | todo--; |
bbfd6b00 | 1043 | fio_sem_up(&td->mutex); |
ebac4655 JA |
1044 | } |
1045 | ||
1046 | reap_threads(&nr_running, &t_rate, &m_rate); | |
1047 | ||
1048 | if (todo) | |
1049 | usleep(100000); | |
1050 | } | |
1051 | ||
1052 | while (nr_running) { | |
1053 | reap_threads(&nr_running, &t_rate, &m_rate); | |
1054 | usleep(10000); | |
1055 | } | |
1056 | ||
1057 | update_io_ticks(); | |
2f9ade3c | 1058 | fio_unpin_memory(); |
ebac4655 JA |
1059 | } |
1060 | ||
ebac4655 JA |
1061 | int main(int argc, char *argv[]) |
1062 | { | |
29d610e1 JA |
1063 | long ps; |
1064 | ||
dbe1125e JA |
1065 | /* |
1066 | * We need locale for number printing, if it isn't set then just | |
1067 | * go with the US format. | |
1068 | */ | |
1069 | if (!getenv("LC_NUMERIC")) | |
1070 | setlocale(LC_NUMERIC, "en_US"); | |
1071 | ||
ebac4655 JA |
1072 | if (parse_options(argc, argv)) |
1073 | return 1; | |
1074 | ||
1075 | if (!thread_number) { | |
3b70d7e5 | 1076 | log_err("Nothing to do\n"); |
ebac4655 JA |
1077 | return 1; |
1078 | } | |
1079 | ||
29d610e1 JA |
1080 | ps = sysconf(_SC_PAGESIZE); |
1081 | if (ps < 0) { | |
1082 | log_err("Failed to get page size\n"); | |
1083 | return 1; | |
1084 | } | |
1085 | ||
1086 | page_mask = ps - 1; | |
1087 | ||
bb3884d8 JA |
1088 | if (write_bw_log) { |
1089 | setup_log(&agg_io_log[DDIR_READ]); | |
1090 | setup_log(&agg_io_log[DDIR_WRITE]); | |
1091 | } | |
1092 | ||
ebac4655 JA |
1093 | disk_util_timer_arm(); |
1094 | ||
1095 | run_threads(); | |
6ce15a32 | 1096 | |
bb3884d8 | 1097 | if (!fio_abort) { |
6ce15a32 | 1098 | show_run_stats(); |
bb3884d8 JA |
1099 | if (write_bw_log) { |
1100 | __finish_log(agg_io_log[DDIR_READ],"agg-read_bw.log"); | |
1101 | __finish_log(agg_io_log[DDIR_WRITE],"agg-write_bw.log"); | |
1102 | } | |
1103 | } | |
ebac4655 | 1104 | |
437c9b71 | 1105 | return exit_value; |
ebac4655 | 1106 | } |