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 | ||
53cdc686 JA |
139 | static struct fio_file *get_next_file(struct thread_data *td) |
140 | { | |
0ab8db89 | 141 | unsigned int old_next_file = td->next_file; |
b2a15192 JA |
142 | struct fio_file *f; |
143 | ||
144 | do { | |
145 | f = &td->files[td->next_file]; | |
146 | ||
147 | td->next_file++; | |
148 | if (td->next_file >= td->nr_files) | |
149 | td->next_file = 0; | |
150 | ||
151 | if (f->fd != -1) | |
152 | break; | |
53cdc686 | 153 | |
b2a15192 JA |
154 | f = NULL; |
155 | } while (td->next_file != old_next_file); | |
53cdc686 JA |
156 | |
157 | return f; | |
158 | } | |
159 | ||
906c8d75 JA |
160 | /* |
161 | * When job exits, we can cancel the in-flight IO if we are using async | |
162 | * io. Attempt to do so. | |
163 | */ | |
ebac4655 JA |
164 | static void cleanup_pending_aio(struct thread_data *td) |
165 | { | |
166 | struct timespec ts = { .tv_sec = 0, .tv_nsec = 0}; | |
167 | struct list_head *entry, *n; | |
168 | struct io_completion_data icd; | |
169 | struct io_u *io_u; | |
170 | int r; | |
171 | ||
172 | /* | |
173 | * get immediately available events, if any | |
174 | */ | |
45bee283 | 175 | r = td_io_getevents(td, 0, td->cur_depth, &ts); |
ebac4655 | 176 | if (r > 0) { |
3af6ef39 | 177 | init_icd(&icd, NULL, r); |
ebac4655 JA |
178 | ios_completed(td, &icd); |
179 | } | |
180 | ||
181 | /* | |
182 | * now cancel remaining active events | |
183 | */ | |
2866c82d | 184 | if (td->io_ops->cancel) { |
ebac4655 JA |
185 | list_for_each_safe(entry, n, &td->io_u_busylist) { |
186 | io_u = list_entry(entry, struct io_u, list); | |
187 | ||
2866c82d | 188 | r = td->io_ops->cancel(td, io_u); |
ebac4655 JA |
189 | if (!r) |
190 | put_io_u(td, io_u); | |
191 | } | |
192 | } | |
193 | ||
194 | if (td->cur_depth) { | |
45bee283 | 195 | r = td_io_getevents(td, td->cur_depth, td->cur_depth, NULL); |
ebac4655 | 196 | if (r > 0) { |
3af6ef39 | 197 | init_icd(&icd, NULL, r); |
ebac4655 JA |
198 | ios_completed(td, &icd); |
199 | } | |
200 | } | |
201 | } | |
202 | ||
858a3d47 JA |
203 | /* |
204 | * Helper to handle the final sync of a file. Works just like the normal | |
205 | * io path, just does everything sync. | |
206 | */ | |
207 | static int fio_io_sync(struct thread_data *td, struct fio_file *f) | |
208 | { | |
209 | struct io_u *io_u = __get_io_u(td); | |
210 | struct io_completion_data icd; | |
211 | int ret; | |
212 | ||
213 | if (!io_u) | |
214 | return 1; | |
215 | ||
216 | io_u->ddir = DDIR_SYNC; | |
217 | io_u->file = f; | |
218 | ||
219 | if (td_io_prep(td, io_u)) { | |
220 | put_io_u(td, io_u); | |
221 | return 1; | |
222 | } | |
223 | ||
224 | ret = td_io_queue(td, io_u); | |
36167d82 | 225 | if (ret < 0) { |
353a7e0e | 226 | td_verror(td, io_u->error); |
858a3d47 | 227 | put_io_u(td, io_u); |
858a3d47 | 228 | return 1; |
36167d82 JA |
229 | } else if (ret == FIO_Q_QUEUED) { |
230 | ret = td_io_getevents(td, 1, td->cur_depth, NULL); | |
231 | if (ret < 0) { | |
232 | td_verror(td, ret); | |
233 | return 1; | |
234 | } | |
858a3d47 | 235 | |
3af6ef39 | 236 | init_icd(&icd, NULL, ret); |
36167d82 JA |
237 | ios_completed(td, &icd); |
238 | if (icd.error) { | |
239 | td_verror(td, icd.error); | |
240 | return 1; | |
241 | } | |
242 | } else if (ret == FIO_Q_COMPLETED) { | |
243 | if (io_u->error) { | |
244 | td_verror(td, io_u->error); | |
245 | return 1; | |
246 | } | |
858a3d47 | 247 | |
3af6ef39 | 248 | init_icd(&icd, NULL, 1); |
36167d82 JA |
249 | io_completed(td, io_u, &icd); |
250 | put_io_u(td, io_u); | |
858a3d47 JA |
251 | } |
252 | ||
253 | return 0; | |
254 | } | |
255 | ||
906c8d75 JA |
256 | /* |
257 | * The main verify engine. Runs over the writes we previusly submitted, | |
258 | * reads the blocks back in, and checks the crc/md5 of the data. | |
259 | */ | |
1e97cce9 | 260 | static void do_verify(struct thread_data *td) |
ebac4655 | 261 | { |
53cdc686 | 262 | struct fio_file *f; |
36167d82 | 263 | struct io_u *io_u; |
3af6ef39 | 264 | int ret, i, min_events; |
e5b401d4 JA |
265 | |
266 | /* | |
267 | * sync io first and invalidate cache, to make sure we really | |
268 | * read from disk. | |
269 | */ | |
270 | for_each_file(td, f, i) { | |
858a3d47 | 271 | fio_io_sync(td, f); |
e5b401d4 JA |
272 | file_invalidate_cache(td, f); |
273 | } | |
ebac4655 JA |
274 | |
275 | td_set_runstate(td, TD_VERIFYING); | |
276 | ||
36167d82 JA |
277 | io_u = NULL; |
278 | while (!td->terminate) { | |
3af6ef39 JA |
279 | struct io_completion_data icd; |
280 | struct timespec *timeout; | |
281 | ||
ebac4655 JA |
282 | io_u = __get_io_u(td); |
283 | if (!io_u) | |
284 | break; | |
285 | ||
36167d82 | 286 | if (runtime_exceeded(td, &io_u->start_time)) |
02bcaa8c | 287 | break; |
02bcaa8c | 288 | |
36167d82 | 289 | if (get_next_verify(td, io_u)) |
ebac4655 | 290 | break; |
ebac4655 | 291 | |
36167d82 | 292 | if (td_io_prep(td, io_u)) |
53cdc686 JA |
293 | break; |
294 | ||
36167d82 JA |
295 | requeue: |
296 | ret = td_io_queue(td, io_u); | |
53cdc686 | 297 | |
36167d82 JA |
298 | switch (ret) { |
299 | case FIO_Q_COMPLETED: | |
300 | if (io_u->error) | |
301 | ret = io_u->error; | |
302 | if (io_u->xfer_buflen != io_u->resid && io_u->resid) { | |
303 | int bytes = io_u->xfer_buflen - io_u->resid; | |
ebac4655 | 304 | |
36167d82 JA |
305 | io_u->xfer_buflen = io_u->resid; |
306 | io_u->xfer_buf += bytes; | |
307 | goto requeue; | |
308 | } | |
3af6ef39 JA |
309 | init_icd(&icd, verify_io_u, 1); |
310 | io_completed(td, io_u, &icd); | |
311 | if (icd.error) { | |
312 | ret = icd.error; | |
36167d82 JA |
313 | break; |
314 | } | |
3af6ef39 | 315 | put_io_u(td, io_u); |
36167d82 JA |
316 | continue; |
317 | case FIO_Q_QUEUED: | |
318 | break; | |
319 | default: | |
320 | assert(ret < 0); | |
321 | td_verror(td, ret); | |
ebac4655 JA |
322 | break; |
323 | } | |
324 | ||
3af6ef39 JA |
325 | if (ret < 0) |
326 | break; | |
327 | ||
ebac4655 | 328 | /* |
3af6ef39 JA |
329 | * if we can queue more, do so. but check if there are |
330 | * completed io_u's first. | |
ebac4655 | 331 | */ |
3af6ef39 JA |
332 | if (queue_full(td)) { |
333 | timeout = NULL; | |
334 | min_events = 1; | |
335 | } else { | |
336 | struct timespec ts; | |
337 | ||
338 | ts.tv_sec = 0; | |
339 | ts.tv_nsec = 0; | |
340 | timeout = &ts; | |
341 | min_events = 0; | |
342 | } | |
343 | ||
344 | /* | |
345 | * Reap required number of io units, if any, and do the | |
346 | * verification on them through the callback handler | |
347 | */ | |
348 | ret = td_io_getevents(td, min_events, td->cur_depth, timeout); | |
36167d82 | 349 | if (ret < 0) |
ebac4655 | 350 | break; |
3af6ef39 JA |
351 | else if (!ret) |
352 | continue; | |
ebac4655 | 353 | |
3af6ef39 JA |
354 | init_icd(&icd, verify_io_u, ret); |
355 | ios_completed(td, &icd); | |
ebac4655 | 356 | |
3af6ef39 JA |
357 | if (icd.error) { |
358 | td_verror(td, icd.error); | |
ebac4655 | 359 | break; |
3af6ef39 | 360 | } |
36167d82 | 361 | } |
ebac4655 | 362 | |
36167d82 JA |
363 | if (io_u) |
364 | put_io_u(td, io_u); | |
ebac4655 JA |
365 | |
366 | if (td->cur_depth) | |
367 | cleanup_pending_aio(td); | |
368 | ||
369 | td_set_runstate(td, TD_RUNNING); | |
370 | } | |
371 | ||
b990b5c0 JA |
372 | /* |
373 | * Not really an io thread, all it does is burn CPU cycles in the specified | |
374 | * manner. | |
375 | */ | |
376 | static void do_cpuio(struct thread_data *td) | |
377 | { | |
378 | struct timeval e; | |
379 | int split = 100 / td->cpuload; | |
380 | int i = 0; | |
381 | ||
382 | while (!td->terminate) { | |
02bcaa8c | 383 | fio_gettime(&e, NULL); |
b990b5c0 JA |
384 | |
385 | if (runtime_exceeded(td, &e)) | |
386 | break; | |
387 | ||
388 | if (!(i % split)) | |
389 | __usec_sleep(10000); | |
390 | else | |
391 | usec_sleep(td, 10000); | |
392 | ||
393 | i++; | |
394 | } | |
395 | } | |
396 | ||
32cd46a0 | 397 | /* |
906c8d75 | 398 | * Main IO worker function. It retrieves io_u's to process and queues |
32cd46a0 JA |
399 | * and reaps them, checking for rate and errors along the way. |
400 | */ | |
ebac4655 JA |
401 | static void do_io(struct thread_data *td) |
402 | { | |
403 | struct io_completion_data icd; | |
02bcaa8c | 404 | struct timeval s; |
ebac4655 | 405 | unsigned long usec; |
53cdc686 | 406 | struct fio_file *f; |
84585003 | 407 | int i, ret = 0; |
ebac4655 | 408 | |
5853e5a8 JA |
409 | td_set_runstate(td, TD_RUNNING); |
410 | ||
3951414d | 411 | while ((td->this_io_bytes[0] + td->this_io_bytes[1]) < td->io_size) { |
ebac4655 | 412 | struct timespec *timeout; |
84585003 | 413 | int min_evts = 0; |
ebac4655 JA |
414 | struct io_u *io_u; |
415 | ||
416 | if (td->terminate) | |
417 | break; | |
418 | ||
53cdc686 JA |
419 | f = get_next_file(td); |
420 | if (!f) | |
421 | break; | |
422 | ||
423 | io_u = get_io_u(td, f); | |
ebac4655 JA |
424 | if (!io_u) |
425 | break; | |
426 | ||
427 | memcpy(&s, &io_u->start_time, sizeof(s)); | |
cec6b55d | 428 | requeue: |
45bee283 | 429 | ret = td_io_queue(td, io_u); |
36167d82 JA |
430 | |
431 | switch (ret) { | |
432 | case FIO_Q_COMPLETED: | |
433 | if (io_u->error) { | |
434 | ret = io_u->error; | |
435 | break; | |
436 | } | |
437 | if (io_u->xfer_buflen != io_u->resid && io_u->resid) { | |
438 | int bytes = io_u->xfer_buflen - io_u->resid; | |
439 | ||
cec6b55d | 440 | io_u->xfer_buflen = io_u->resid; |
36167d82 | 441 | io_u->xfer_buf += bytes; |
cec6b55d | 442 | goto requeue; |
cec6b55d | 443 | } |
3af6ef39 | 444 | init_icd(&icd, NULL, 1); |
36167d82 JA |
445 | io_completed(td, io_u, &icd); |
446 | put_io_u(td, io_u); | |
447 | break; | |
448 | case FIO_Q_QUEUED: | |
449 | break; | |
450 | default: | |
451 | assert(ret < 0); | |
452 | put_io_u(td, io_u); | |
453 | break; | |
ebac4655 JA |
454 | } |
455 | ||
36167d82 JA |
456 | if (ret < 0) |
457 | break; | |
458 | ||
ebac4655 JA |
459 | add_slat_sample(td, io_u->ddir, mtime_since(&io_u->start_time, &io_u->issue_time)); |
460 | ||
36167d82 JA |
461 | if (ret == FIO_Q_QUEUED) { |
462 | if (td->cur_depth < td->iodepth) { | |
463 | struct timespec ts; | |
8d7ad8d9 | 464 | |
36167d82 JA |
465 | ts.tv_sec = 0; |
466 | ts.tv_nsec = 0; | |
467 | timeout = &ts; | |
468 | min_evts = 0; | |
469 | } else { | |
470 | timeout = NULL; | |
471 | min_evts = 1; | |
472 | } | |
ebac4655 | 473 | |
36167d82 JA |
474 | ret = td_io_getevents(td, min_evts, td->cur_depth, timeout); |
475 | if (ret < 0) { | |
476 | td_verror(td, ret); | |
477 | break; | |
478 | } else if (!ret) | |
479 | continue; | |
ebac4655 | 480 | |
3af6ef39 | 481 | init_icd(&icd, NULL, ret); |
36167d82 JA |
482 | ios_completed(td, &icd); |
483 | if (icd.error) { | |
484 | td_verror(td, icd.error); | |
485 | break; | |
486 | } | |
ebac4655 JA |
487 | } |
488 | ||
489 | /* | |
490 | * the rate is batched for now, it should work for batches | |
491 | * of completions except the very first one which may look | |
492 | * a little bursty | |
493 | */ | |
02bcaa8c | 494 | usec = utime_since(&s, &icd.time); |
ebac4655 | 495 | |
a00735e6 | 496 | rate_throttle(td, usec, icd.bytes_done[td->ddir], td->ddir); |
ebac4655 | 497 | |
02bcaa8c | 498 | if (check_min_rate(td, &icd.time)) { |
98aa62d8 | 499 | if (exitall_on_terminate) |
6ce15a32 | 500 | terminate_threads(td->groupid, 0); |
fd841467 | 501 | td_verror(td, ENODATA); |
ebac4655 JA |
502 | break; |
503 | } | |
504 | ||
02bcaa8c | 505 | if (runtime_exceeded(td, &icd.time)) |
ebac4655 JA |
506 | break; |
507 | ||
9c1f7434 JA |
508 | if (td->thinktime) { |
509 | unsigned long long b; | |
510 | ||
511 | b = td->io_blocks[0] + td->io_blocks[1]; | |
48097d5c JA |
512 | if (!(b % td->thinktime_blocks)) { |
513 | int left; | |
514 | ||
515 | if (td->thinktime_spin) | |
516 | __usec_sleep(td->thinktime_spin); | |
517 | ||
518 | left = td->thinktime - td->thinktime_spin; | |
519 | if (left) | |
520 | usec_sleep(td, left); | |
521 | } | |
9c1f7434 | 522 | } |
ebac4655 JA |
523 | } |
524 | ||
4d2413c6 | 525 | if (!td->error) { |
84585003 JA |
526 | if (td->cur_depth) |
527 | cleanup_pending_aio(td); | |
ebac4655 | 528 | |
84585003 JA |
529 | if (should_fsync(td) && td->end_fsync) { |
530 | td_set_runstate(td, TD_FSYNCING); | |
531 | for_each_file(td, f, i) | |
858a3d47 | 532 | fio_io_sync(td, f); |
84585003 | 533 | } |
5853e5a8 | 534 | } |
ebac4655 JA |
535 | } |
536 | ||
ebac4655 JA |
537 | static void cleanup_io_u(struct thread_data *td) |
538 | { | |
539 | struct list_head *entry, *n; | |
540 | struct io_u *io_u; | |
541 | ||
542 | list_for_each_safe(entry, n, &td->io_u_freelist) { | |
543 | io_u = list_entry(entry, struct io_u, list); | |
544 | ||
545 | list_del(&io_u->list); | |
546 | free(io_u); | |
547 | } | |
548 | ||
2f9ade3c | 549 | free_io_mem(td); |
ebac4655 JA |
550 | } |
551 | ||
6b9cea23 JA |
552 | /* |
553 | * "randomly" fill the buffer contents | |
554 | */ | |
66eeb296 | 555 | static void fill_rand_buf(struct io_u *io_u, int max_bs) |
6b9cea23 | 556 | { |
66eeb296 | 557 | int *ptr = io_u->buf; |
6b9cea23 JA |
558 | |
559 | while ((void *) ptr - io_u->buf < max_bs) { | |
560 | *ptr = rand() * 0x9e370001; | |
561 | ptr++; | |
562 | } | |
563 | } | |
564 | ||
ebac4655 JA |
565 | static int init_io_u(struct thread_data *td) |
566 | { | |
567 | struct io_u *io_u; | |
a00735e6 | 568 | unsigned int max_bs; |
ebac4655 JA |
569 | int i, max_units; |
570 | char *p; | |
571 | ||
2866c82d | 572 | if (td->io_ops->flags & FIO_CPUIO) |
b990b5c0 JA |
573 | return 0; |
574 | ||
2866c82d | 575 | if (td->io_ops->flags & FIO_SYNCIO) |
ebac4655 JA |
576 | max_units = 1; |
577 | else | |
578 | max_units = td->iodepth; | |
579 | ||
a00735e6 | 580 | max_bs = max(td->max_bs[DDIR_READ], td->max_bs[DDIR_WRITE]); |
74b025b0 JA |
581 | td->orig_buffer_size = max_bs * max_units; |
582 | ||
d0bdaf49 | 583 | if (td->mem_type == MEM_SHMHUGE || td->mem_type == MEM_MMAPHUGE) |
56bb17f2 | 584 | td->orig_buffer_size = (td->orig_buffer_size + td->hugepage_size - 1) & ~(td->hugepage_size - 1); |
74b025b0 | 585 | else |
29d610e1 | 586 | td->orig_buffer_size += page_mask; |
ebac4655 | 587 | |
2f9ade3c JA |
588 | if (allocate_io_mem(td)) |
589 | return 1; | |
ebac4655 | 590 | |
ebac4655 JA |
591 | p = ALIGN(td->orig_buffer); |
592 | for (i = 0; i < max_units; i++) { | |
593 | io_u = malloc(sizeof(*io_u)); | |
594 | memset(io_u, 0, sizeof(*io_u)); | |
595 | INIT_LIST_HEAD(&io_u->list); | |
596 | ||
a00735e6 | 597 | io_u->buf = p + max_bs * i; |
6b9cea23 | 598 | if (td_write(td) || td_rw(td)) |
a00735e6 | 599 | fill_rand_buf(io_u, max_bs); |
6b9cea23 | 600 | |
b1ff3403 | 601 | io_u->index = i; |
ebac4655 JA |
602 | list_add(&io_u->list, &td->io_u_freelist); |
603 | } | |
604 | ||
605 | return 0; | |
606 | } | |
607 | ||
da86774e JA |
608 | static int switch_ioscheduler(struct thread_data *td) |
609 | { | |
610 | char tmp[256], tmp2[128]; | |
611 | FILE *f; | |
612 | int ret; | |
613 | ||
f48b467c JA |
614 | if (td->io_ops->flags & FIO_CPUIO) |
615 | return 0; | |
616 | ||
da86774e JA |
617 | sprintf(tmp, "%s/queue/scheduler", td->sysfs_root); |
618 | ||
619 | f = fopen(tmp, "r+"); | |
620 | if (!f) { | |
621 | td_verror(td, errno); | |
622 | return 1; | |
623 | } | |
624 | ||
625 | /* | |
626 | * Set io scheduler. | |
627 | */ | |
628 | ret = fwrite(td->ioscheduler, strlen(td->ioscheduler), 1, f); | |
629 | if (ferror(f) || ret != 1) { | |
630 | td_verror(td, errno); | |
631 | fclose(f); | |
632 | return 1; | |
633 | } | |
634 | ||
635 | rewind(f); | |
636 | ||
637 | /* | |
638 | * Read back and check that the selected scheduler is now the default. | |
639 | */ | |
640 | ret = fread(tmp, 1, sizeof(tmp), f); | |
641 | if (ferror(f) || ret < 0) { | |
642 | td_verror(td, errno); | |
643 | fclose(f); | |
644 | return 1; | |
645 | } | |
646 | ||
647 | sprintf(tmp2, "[%s]", td->ioscheduler); | |
648 | if (!strstr(tmp, tmp2)) { | |
3b70d7e5 | 649 | log_err("fio: io scheduler %s not found\n", td->ioscheduler); |
da86774e JA |
650 | td_verror(td, EINVAL); |
651 | fclose(f); | |
652 | return 1; | |
653 | } | |
654 | ||
655 | fclose(f); | |
656 | return 0; | |
657 | } | |
658 | ||
ebac4655 JA |
659 | static void clear_io_state(struct thread_data *td) |
660 | { | |
53cdc686 JA |
661 | struct fio_file *f; |
662 | int i; | |
ebac4655 | 663 | |
ebac4655 JA |
664 | td->stat_io_bytes[0] = td->stat_io_bytes[1] = 0; |
665 | td->this_io_bytes[0] = td->this_io_bytes[1] = 0; | |
20dc95c4 | 666 | td->zone_bytes = 0; |
ebac4655 | 667 | |
53cdc686 JA |
668 | for_each_file(td, f, i) { |
669 | f->last_pos = 0; | |
670 | if (td->io_ops->flags & FIO_SYNCIO) | |
671 | lseek(f->fd, SEEK_SET, 0); | |
672 | ||
673 | if (f->file_map) | |
674 | memset(f->file_map, 0, f->num_maps * sizeof(long)); | |
675 | } | |
ebac4655 JA |
676 | } |
677 | ||
906c8d75 JA |
678 | /* |
679 | * Entry point for the thread based jobs. The process based jobs end up | |
680 | * here as well, after a little setup. | |
681 | */ | |
ebac4655 JA |
682 | static void *thread_main(void *data) |
683 | { | |
69008999 | 684 | unsigned long long runtime[2]; |
ebac4655 | 685 | struct thread_data *td = data; |
ebac4655 JA |
686 | |
687 | if (!td->use_thread) | |
688 | setsid(); | |
689 | ||
690 | td->pid = getpid(); | |
691 | ||
aea47d44 JA |
692 | INIT_LIST_HEAD(&td->io_u_freelist); |
693 | INIT_LIST_HEAD(&td->io_u_busylist); | |
694 | INIT_LIST_HEAD(&td->io_hist_list); | |
695 | INIT_LIST_HEAD(&td->io_log_list); | |
696 | ||
ebac4655 JA |
697 | if (init_io_u(td)) |
698 | goto err; | |
699 | ||
700 | if (fio_setaffinity(td) == -1) { | |
701 | td_verror(td, errno); | |
702 | goto err; | |
703 | } | |
704 | ||
aea47d44 JA |
705 | if (init_iolog(td)) |
706 | goto err; | |
707 | ||
ebac4655 JA |
708 | if (td->ioprio) { |
709 | if (ioprio_set(IOPRIO_WHO_PROCESS, 0, td->ioprio) == -1) { | |
710 | td_verror(td, errno); | |
711 | goto err; | |
712 | } | |
713 | } | |
714 | ||
1056eaad | 715 | if (nice(td->nice) == -1) { |
b6f4d880 JA |
716 | td_verror(td, errno); |
717 | goto err; | |
718 | } | |
719 | ||
75154845 JA |
720 | if (init_random_state(td)) |
721 | goto err; | |
722 | ||
56f9498d JA |
723 | if (td->ioscheduler && switch_ioscheduler(td)) |
724 | goto err; | |
da86774e | 725 | |
75154845 | 726 | td_set_runstate(td, TD_INITIALIZED); |
bbfd6b00 JA |
727 | fio_sem_up(&startup_sem); |
728 | fio_sem_down(&td->mutex); | |
ebac4655 | 729 | |
53cdc686 | 730 | if (!td->create_serialize && setup_files(td)) |
ebac4655 | 731 | goto err; |
21972cde JA |
732 | if (open_files(td)) |
733 | goto err; | |
ebac4655 | 734 | |
7d6c5283 JA |
735 | /* |
736 | * Do this late, as some IO engines would like to have the | |
737 | * files setup prior to initializing structures. | |
738 | */ | |
739 | if (td_io_init(td)) | |
740 | goto err; | |
741 | ||
69cfd7e0 JA |
742 | if (td->exec_prerun) { |
743 | if (system(td->exec_prerun) < 0) | |
744 | goto err; | |
745 | } | |
4e0ba8af | 746 | |
69008999 | 747 | fio_gettime(&td->epoch, NULL); |
36dff966 | 748 | getrusage(RUSAGE_SELF, &td->ru_start); |
69008999 JA |
749 | |
750 | runtime[0] = runtime[1] = 0; | |
ebac4655 | 751 | while (td->loops--) { |
02bcaa8c | 752 | fio_gettime(&td->start, NULL); |
ebac4655 JA |
753 | memcpy(&td->stat_sample_time, &td->start, sizeof(td->start)); |
754 | ||
755 | if (td->ratemin) | |
756 | memcpy(&td->lastrate, &td->stat_sample_time, sizeof(td->lastrate)); | |
757 | ||
758 | clear_io_state(td); | |
759 | prune_io_piece_log(td); | |
760 | ||
2866c82d | 761 | if (td->io_ops->flags & FIO_CPUIO) |
b990b5c0 JA |
762 | do_cpuio(td); |
763 | else | |
764 | do_io(td); | |
ebac4655 | 765 | |
69008999 | 766 | runtime[td->ddir] += utime_since_now(&td->start); |
aea47d44 | 767 | if (td_rw(td) && td->io_bytes[td->ddir ^ 1]) |
69008999 | 768 | runtime[td->ddir ^ 1] = runtime[td->ddir]; |
3d60d1ed | 769 | |
ebac4655 JA |
770 | if (td->error || td->terminate) |
771 | break; | |
772 | ||
773 | if (td->verify == VERIFY_NONE) | |
774 | continue; | |
775 | ||
776 | clear_io_state(td); | |
02bcaa8c | 777 | fio_gettime(&td->start, NULL); |
ebac4655 JA |
778 | |
779 | do_verify(td); | |
780 | ||
69008999 | 781 | runtime[DDIR_READ] += utime_since_now(&td->start); |
ebac4655 JA |
782 | |
783 | if (td->error || td->terminate) | |
784 | break; | |
785 | } | |
786 | ||
36dff966 | 787 | update_rusage_stat(td); |
69008999 JA |
788 | fio_gettime(&td->end_time, NULL); |
789 | td->runtime[0] = runtime[0] / 1000; | |
790 | td->runtime[1] = runtime[1] / 1000; | |
791 | ||
ebac4655 JA |
792 | if (td->bw_log) |
793 | finish_log(td, td->bw_log, "bw"); | |
794 | if (td->slat_log) | |
795 | finish_log(td, td->slat_log, "slat"); | |
796 | if (td->clat_log) | |
797 | finish_log(td, td->clat_log, "clat"); | |
076efc7c | 798 | if (td->write_iolog_file) |
843a7413 | 799 | write_iolog_close(td); |
69cfd7e0 JA |
800 | if (td->exec_postrun) { |
801 | if (system(td->exec_postrun) < 0) | |
802 | log_err("fio: postrun %s failed\n", td->exec_postrun); | |
803 | } | |
ebac4655 JA |
804 | |
805 | if (exitall_on_terminate) | |
6ce15a32 | 806 | terminate_threads(td->groupid, 0); |
ebac4655 JA |
807 | |
808 | err: | |
5bf13a5a JA |
809 | if (td->error) |
810 | printf("fio: pid=%d, err=%d/%s\n", td->pid, td->error, td->verror); | |
53cdc686 | 811 | close_files(td); |
2866c82d | 812 | close_ioengine(td); |
ebac4655 | 813 | cleanup_io_u(td); |
ebac4655 | 814 | td_set_runstate(td, TD_EXITED); |
a6418147 | 815 | return (void *) td->error; |
ebac4655 JA |
816 | } |
817 | ||
906c8d75 JA |
818 | /* |
819 | * We cannot pass the td data into a forked process, so attach the td and | |
820 | * pass it to the thread worker. | |
821 | */ | |
a6418147 | 822 | static int fork_main(int shmid, int offset) |
ebac4655 JA |
823 | { |
824 | struct thread_data *td; | |
a6418147 | 825 | void *data, *ret; |
ebac4655 JA |
826 | |
827 | data = shmat(shmid, NULL, 0); | |
828 | if (data == (void *) -1) { | |
a6418147 JA |
829 | int __err = errno; |
830 | ||
ebac4655 | 831 | perror("shmat"); |
a6418147 | 832 | return __err; |
ebac4655 JA |
833 | } |
834 | ||
835 | td = data + offset * sizeof(struct thread_data); | |
a6418147 | 836 | ret = thread_main(td); |
ebac4655 | 837 | shmdt(data); |
a6418147 | 838 | return (int) ret; |
ebac4655 JA |
839 | } |
840 | ||
906c8d75 JA |
841 | /* |
842 | * Run over the job map and reap the threads that have exited, if any. | |
843 | */ | |
ebac4655 JA |
844 | static void reap_threads(int *nr_running, int *t_rate, int *m_rate) |
845 | { | |
34572e28 | 846 | struct thread_data *td; |
fab6aa71 | 847 | int i, cputhreads, pending, status, ret; |
ebac4655 JA |
848 | |
849 | /* | |
850 | * reap exited threads (TD_EXITED -> TD_REAPED) | |
851 | */ | |
4d2413c6 | 852 | pending = cputhreads = 0; |
34572e28 | 853 | for_each_td(td, i) { |
84585003 JA |
854 | /* |
855 | * ->io_ops is NULL for a thread that has closed its | |
856 | * io engine | |
857 | */ | |
858 | if (td->io_ops && td->io_ops->flags & FIO_CPUIO) | |
b990b5c0 JA |
859 | cputhreads++; |
860 | ||
fab6aa71 JA |
861 | if (td->runstate < TD_EXITED) { |
862 | /* | |
863 | * check if someone quit or got killed in an unusual way | |
864 | */ | |
865 | ret = waitpid(td->pid, &status, WNOHANG); | |
866 | if (ret < 0) | |
867 | perror("waitpid"); | |
868 | else if ((ret == td->pid) && WIFSIGNALED(status)) { | |
869 | int sig = WTERMSIG(status); | |
870 | ||
871 | log_err("fio: pid=%d, got signal=%d\n", td->pid, sig); | |
872 | td_set_runstate(td, TD_REAPED); | |
873 | goto reaped; | |
874 | } | |
875 | } | |
876 | ||
4d2413c6 JA |
877 | if (td->runstate != TD_EXITED) { |
878 | if (td->runstate < TD_RUNNING) | |
879 | pending++; | |
880 | ||
ebac4655 | 881 | continue; |
4d2413c6 | 882 | } |
ebac4655 | 883 | |
437c9b71 JA |
884 | if (td->error) |
885 | exit_value++; | |
886 | ||
ebac4655 JA |
887 | td_set_runstate(td, TD_REAPED); |
888 | ||
889 | if (td->use_thread) { | |
890 | long ret; | |
891 | ||
892 | if (pthread_join(td->thread, (void *) &ret)) | |
893 | perror("thread_join"); | |
a6418147 JA |
894 | } else { |
895 | int status; | |
896 | ||
fab6aa71 JA |
897 | ret = waitpid(td->pid, &status, 0); |
898 | if (ret < 0) | |
899 | perror("waitpid"); | |
73170f19 | 900 | else if (WIFEXITED(status) && WEXITSTATUS(status)) { |
a6418147 JA |
901 | if (!exit_value) |
902 | exit_value++; | |
903 | } | |
904 | } | |
ebac4655 | 905 | |
fab6aa71 | 906 | reaped: |
ebac4655 JA |
907 | (*nr_running)--; |
908 | (*m_rate) -= td->ratemin; | |
909 | (*t_rate) -= td->rate; | |
910 | } | |
b990b5c0 | 911 | |
4d2413c6 | 912 | if (*nr_running == cputhreads && !pending) |
6ce15a32 | 913 | terminate_threads(TERMINATE_ALL, 0); |
ebac4655 JA |
914 | } |
915 | ||
906c8d75 JA |
916 | /* |
917 | * Main function for kicking off and reaping jobs, as needed. | |
918 | */ | |
ebac4655 JA |
919 | static void run_threads(void) |
920 | { | |
ebac4655 JA |
921 | struct thread_data *td; |
922 | unsigned long spent; | |
923 | int i, todo, nr_running, m_rate, t_rate, nr_started; | |
fcb6ade2 | 924 | |
2f9ade3c JA |
925 | if (fio_pin_memory()) |
926 | return; | |
ebac4655 | 927 | |
c6ae0a5b JA |
928 | if (!terse_output) { |
929 | printf("Starting %d thread%s\n", thread_number, thread_number > 1 ? "s" : ""); | |
930 | fflush(stdout); | |
931 | } | |
c04f7ec3 | 932 | |
4efa970e JA |
933 | signal(SIGINT, sig_handler); |
934 | signal(SIGALRM, sig_handler); | |
935 | ||
ebac4655 JA |
936 | todo = thread_number; |
937 | nr_running = 0; | |
938 | nr_started = 0; | |
939 | m_rate = t_rate = 0; | |
940 | ||
34572e28 | 941 | for_each_td(td, i) { |
263e529f | 942 | print_status_init(td->thread_number - 1); |
ebac4655 | 943 | |
380cf265 JA |
944 | if (!td->create_serialize) { |
945 | init_disk_util(td); | |
ebac4655 | 946 | continue; |
380cf265 | 947 | } |
ebac4655 JA |
948 | |
949 | /* | |
950 | * do file setup here so it happens sequentially, | |
951 | * we don't want X number of threads getting their | |
952 | * client data interspersed on disk | |
953 | */ | |
53cdc686 | 954 | if (setup_files(td)) { |
5bf13a5a JA |
955 | exit_value++; |
956 | if (td->error) | |
957 | log_err("fio: pid=%d, err=%d/%s\n", td->pid, td->error, td->verror); | |
ebac4655 JA |
958 | td_set_runstate(td, TD_REAPED); |
959 | todo--; | |
960 | } | |
380cf265 JA |
961 | |
962 | init_disk_util(td); | |
ebac4655 JA |
963 | } |
964 | ||
ebac4655 | 965 | while (todo) { |
75154845 JA |
966 | struct thread_data *map[MAX_JOBS]; |
967 | struct timeval this_start; | |
968 | int this_jobs = 0, left; | |
969 | ||
ebac4655 JA |
970 | /* |
971 | * create threads (TD_NOT_CREATED -> TD_CREATED) | |
972 | */ | |
34572e28 | 973 | for_each_td(td, i) { |
ebac4655 JA |
974 | if (td->runstate != TD_NOT_CREATED) |
975 | continue; | |
976 | ||
977 | /* | |
978 | * never got a chance to start, killed by other | |
979 | * thread for some reason | |
980 | */ | |
981 | if (td->terminate) { | |
982 | todo--; | |
983 | continue; | |
984 | } | |
985 | ||
986 | if (td->start_delay) { | |
263e529f | 987 | spent = mtime_since_genesis(); |
ebac4655 JA |
988 | |
989 | if (td->start_delay * 1000 > spent) | |
990 | continue; | |
991 | } | |
992 | ||
993 | if (td->stonewall && (nr_started || nr_running)) | |
994 | break; | |
995 | ||
75154845 JA |
996 | /* |
997 | * Set state to created. Thread will transition | |
998 | * to TD_INITIALIZED when it's done setting up. | |
999 | */ | |
ebac4655 | 1000 | td_set_runstate(td, TD_CREATED); |
75154845 | 1001 | map[this_jobs++] = td; |
bbfd6b00 | 1002 | fio_sem_init(&startup_sem, 1); |
ebac4655 JA |
1003 | nr_started++; |
1004 | ||
1005 | if (td->use_thread) { | |
1006 | if (pthread_create(&td->thread, NULL, thread_main, td)) { | |
1007 | perror("thread_create"); | |
1008 | nr_started--; | |
1009 | } | |
1010 | } else { | |
1011 | if (fork()) | |
bbfd6b00 | 1012 | fio_sem_down(&startup_sem); |
ebac4655 | 1013 | else { |
a6418147 JA |
1014 | int ret = fork_main(shm_id, i); |
1015 | ||
1016 | exit(ret); | |
ebac4655 JA |
1017 | } |
1018 | } | |
1019 | } | |
1020 | ||
1021 | /* | |
75154845 JA |
1022 | * Wait for the started threads to transition to |
1023 | * TD_INITIALIZED. | |
ebac4655 | 1024 | */ |
02bcaa8c | 1025 | fio_gettime(&this_start, NULL); |
75154845 | 1026 | left = this_jobs; |
6ce15a32 | 1027 | while (left && !fio_abort) { |
75154845 JA |
1028 | if (mtime_since_now(&this_start) > JOB_START_TIMEOUT) |
1029 | break; | |
1030 | ||
1031 | usleep(100000); | |
1032 | ||
1033 | for (i = 0; i < this_jobs; i++) { | |
1034 | td = map[i]; | |
1035 | if (!td) | |
1036 | continue; | |
b6f4d880 | 1037 | if (td->runstate == TD_INITIALIZED) { |
75154845 JA |
1038 | map[i] = NULL; |
1039 | left--; | |
b6f4d880 JA |
1040 | } else if (td->runstate >= TD_EXITED) { |
1041 | map[i] = NULL; | |
1042 | left--; | |
1043 | todo--; | |
1044 | nr_running++; /* work-around... */ | |
75154845 JA |
1045 | } |
1046 | } | |
1047 | } | |
1048 | ||
1049 | if (left) { | |
3b70d7e5 | 1050 | log_err("fio: %d jobs failed to start\n", left); |
75154845 JA |
1051 | for (i = 0; i < this_jobs; i++) { |
1052 | td = map[i]; | |
1053 | if (!td) | |
1054 | continue; | |
1055 | kill(td->pid, SIGTERM); | |
1056 | } | |
1057 | break; | |
1058 | } | |
1059 | ||
1060 | /* | |
b6f4d880 | 1061 | * start created threads (TD_INITIALIZED -> TD_RUNNING). |
75154845 | 1062 | */ |
34572e28 | 1063 | for_each_td(td, i) { |
75154845 | 1064 | if (td->runstate != TD_INITIALIZED) |
ebac4655 JA |
1065 | continue; |
1066 | ||
1067 | td_set_runstate(td, TD_RUNNING); | |
1068 | nr_running++; | |
1069 | nr_started--; | |
1070 | m_rate += td->ratemin; | |
1071 | t_rate += td->rate; | |
75154845 | 1072 | todo--; |
bbfd6b00 | 1073 | fio_sem_up(&td->mutex); |
ebac4655 JA |
1074 | } |
1075 | ||
1076 | reap_threads(&nr_running, &t_rate, &m_rate); | |
1077 | ||
1078 | if (todo) | |
1079 | usleep(100000); | |
1080 | } | |
1081 | ||
1082 | while (nr_running) { | |
1083 | reap_threads(&nr_running, &t_rate, &m_rate); | |
1084 | usleep(10000); | |
1085 | } | |
1086 | ||
1087 | update_io_ticks(); | |
2f9ade3c | 1088 | fio_unpin_memory(); |
ebac4655 JA |
1089 | } |
1090 | ||
ebac4655 JA |
1091 | int main(int argc, char *argv[]) |
1092 | { | |
29d610e1 JA |
1093 | long ps; |
1094 | ||
dbe1125e JA |
1095 | /* |
1096 | * We need locale for number printing, if it isn't set then just | |
1097 | * go with the US format. | |
1098 | */ | |
1099 | if (!getenv("LC_NUMERIC")) | |
1100 | setlocale(LC_NUMERIC, "en_US"); | |
1101 | ||
ebac4655 JA |
1102 | if (parse_options(argc, argv)) |
1103 | return 1; | |
1104 | ||
1105 | if (!thread_number) { | |
3b70d7e5 | 1106 | log_err("Nothing to do\n"); |
ebac4655 JA |
1107 | return 1; |
1108 | } | |
1109 | ||
29d610e1 JA |
1110 | ps = sysconf(_SC_PAGESIZE); |
1111 | if (ps < 0) { | |
1112 | log_err("Failed to get page size\n"); | |
1113 | return 1; | |
1114 | } | |
1115 | ||
1116 | page_mask = ps - 1; | |
1117 | ||
bb3884d8 JA |
1118 | if (write_bw_log) { |
1119 | setup_log(&agg_io_log[DDIR_READ]); | |
1120 | setup_log(&agg_io_log[DDIR_WRITE]); | |
1121 | } | |
1122 | ||
ebac4655 JA |
1123 | disk_util_timer_arm(); |
1124 | ||
1125 | run_threads(); | |
6ce15a32 | 1126 | |
bb3884d8 | 1127 | if (!fio_abort) { |
6ce15a32 | 1128 | show_run_stats(); |
bb3884d8 JA |
1129 | if (write_bw_log) { |
1130 | __finish_log(agg_io_log[DDIR_READ],"agg-read_bw.log"); | |
1131 | __finish_log(agg_io_log[DDIR_WRITE],"agg-write_bw.log"); | |
1132 | } | |
1133 | } | |
ebac4655 | 1134 | |
437c9b71 | 1135 | return exit_value; |
ebac4655 | 1136 | } |