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