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) { | |
22819ec2 | 232 | td_verror(td, -ret); |
36167d82 JA |
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) | |
22819ec2 | 301 | ret = -io_u->error; |
36167d82 JA |
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); | |
22819ec2 | 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); | |
22819ec2 JA |
349 | if (ret < 0) { |
350 | td_verror(td, -ret); | |
ebac4655 | 351 | break; |
22819ec2 | 352 | } else if (!ret) |
3af6ef39 | 353 | continue; |
ebac4655 | 354 | |
3af6ef39 JA |
355 | init_icd(&icd, verify_io_u, ret); |
356 | ios_completed(td, &icd); | |
ebac4655 | 357 | |
3af6ef39 JA |
358 | if (icd.error) { |
359 | td_verror(td, icd.error); | |
ebac4655 | 360 | break; |
3af6ef39 | 361 | } |
36167d82 | 362 | } |
ebac4655 | 363 | |
36167d82 JA |
364 | if (io_u) |
365 | put_io_u(td, io_u); | |
ebac4655 JA |
366 | |
367 | if (td->cur_depth) | |
368 | cleanup_pending_aio(td); | |
369 | ||
370 | td_set_runstate(td, TD_RUNNING); | |
371 | } | |
372 | ||
b990b5c0 JA |
373 | /* |
374 | * Not really an io thread, all it does is burn CPU cycles in the specified | |
375 | * manner. | |
376 | */ | |
377 | static void do_cpuio(struct thread_data *td) | |
378 | { | |
379 | struct timeval e; | |
380 | int split = 100 / td->cpuload; | |
381 | int i = 0; | |
382 | ||
383 | while (!td->terminate) { | |
02bcaa8c | 384 | fio_gettime(&e, NULL); |
b990b5c0 JA |
385 | |
386 | if (runtime_exceeded(td, &e)) | |
387 | break; | |
388 | ||
389 | if (!(i % split)) | |
390 | __usec_sleep(10000); | |
391 | else | |
392 | usec_sleep(td, 10000); | |
393 | ||
394 | i++; | |
395 | } | |
396 | } | |
397 | ||
32cd46a0 | 398 | /* |
906c8d75 | 399 | * Main IO worker function. It retrieves io_u's to process and queues |
32cd46a0 JA |
400 | * and reaps them, checking for rate and errors along the way. |
401 | */ | |
ebac4655 JA |
402 | static void do_io(struct thread_data *td) |
403 | { | |
404 | struct io_completion_data icd; | |
02bcaa8c | 405 | struct timeval s; |
ebac4655 | 406 | unsigned long usec; |
53cdc686 | 407 | struct fio_file *f; |
84585003 | 408 | int i, ret = 0; |
ebac4655 | 409 | |
5853e5a8 JA |
410 | td_set_runstate(td, TD_RUNNING); |
411 | ||
3951414d | 412 | while ((td->this_io_bytes[0] + td->this_io_bytes[1]) < td->io_size) { |
ebac4655 | 413 | struct timespec *timeout; |
84585003 | 414 | int min_evts = 0; |
ebac4655 JA |
415 | struct io_u *io_u; |
416 | ||
417 | if (td->terminate) | |
418 | break; | |
419 | ||
53cdc686 JA |
420 | f = get_next_file(td); |
421 | if (!f) | |
422 | break; | |
423 | ||
424 | io_u = get_io_u(td, f); | |
ebac4655 JA |
425 | if (!io_u) |
426 | break; | |
427 | ||
428 | memcpy(&s, &io_u->start_time, sizeof(s)); | |
cec6b55d | 429 | requeue: |
45bee283 | 430 | ret = td_io_queue(td, io_u); |
36167d82 JA |
431 | |
432 | switch (ret) { | |
433 | case FIO_Q_COMPLETED: | |
434 | if (io_u->error) { | |
435 | ret = io_u->error; | |
436 | break; | |
437 | } | |
438 | if (io_u->xfer_buflen != io_u->resid && io_u->resid) { | |
439 | int bytes = io_u->xfer_buflen - io_u->resid; | |
440 | ||
cec6b55d | 441 | io_u->xfer_buflen = io_u->resid; |
36167d82 | 442 | io_u->xfer_buf += bytes; |
cec6b55d | 443 | goto requeue; |
cec6b55d | 444 | } |
3af6ef39 | 445 | init_icd(&icd, NULL, 1); |
36167d82 JA |
446 | io_completed(td, io_u, &icd); |
447 | put_io_u(td, io_u); | |
448 | break; | |
449 | case FIO_Q_QUEUED: | |
450 | break; | |
451 | default: | |
452 | assert(ret < 0); | |
453 | put_io_u(td, io_u); | |
454 | break; | |
ebac4655 JA |
455 | } |
456 | ||
36167d82 JA |
457 | if (ret < 0) |
458 | break; | |
459 | ||
ebac4655 JA |
460 | add_slat_sample(td, io_u->ddir, mtime_since(&io_u->start_time, &io_u->issue_time)); |
461 | ||
36167d82 JA |
462 | if (ret == FIO_Q_QUEUED) { |
463 | if (td->cur_depth < td->iodepth) { | |
464 | struct timespec ts; | |
8d7ad8d9 | 465 | |
36167d82 JA |
466 | ts.tv_sec = 0; |
467 | ts.tv_nsec = 0; | |
468 | timeout = &ts; | |
469 | min_evts = 0; | |
470 | } else { | |
471 | timeout = NULL; | |
472 | min_evts = 1; | |
473 | } | |
ebac4655 | 474 | |
36167d82 JA |
475 | ret = td_io_getevents(td, min_evts, td->cur_depth, timeout); |
476 | if (ret < 0) { | |
22819ec2 | 477 | td_verror(td, -ret); |
36167d82 JA |
478 | break; |
479 | } else if (!ret) | |
480 | continue; | |
ebac4655 | 481 | |
3af6ef39 | 482 | init_icd(&icd, NULL, ret); |
36167d82 JA |
483 | ios_completed(td, &icd); |
484 | if (icd.error) { | |
485 | td_verror(td, icd.error); | |
486 | break; | |
487 | } | |
ebac4655 JA |
488 | } |
489 | ||
490 | /* | |
491 | * the rate is batched for now, it should work for batches | |
492 | * of completions except the very first one which may look | |
493 | * a little bursty | |
494 | */ | |
02bcaa8c | 495 | usec = utime_since(&s, &icd.time); |
ebac4655 | 496 | |
a00735e6 | 497 | rate_throttle(td, usec, icd.bytes_done[td->ddir], td->ddir); |
ebac4655 | 498 | |
02bcaa8c | 499 | if (check_min_rate(td, &icd.time)) { |
98aa62d8 | 500 | if (exitall_on_terminate) |
6ce15a32 | 501 | terminate_threads(td->groupid, 0); |
fd841467 | 502 | td_verror(td, ENODATA); |
ebac4655 JA |
503 | break; |
504 | } | |
505 | ||
02bcaa8c | 506 | if (runtime_exceeded(td, &icd.time)) |
ebac4655 JA |
507 | break; |
508 | ||
9c1f7434 JA |
509 | if (td->thinktime) { |
510 | unsigned long long b; | |
511 | ||
512 | b = td->io_blocks[0] + td->io_blocks[1]; | |
48097d5c JA |
513 | if (!(b % td->thinktime_blocks)) { |
514 | int left; | |
515 | ||
516 | if (td->thinktime_spin) | |
517 | __usec_sleep(td->thinktime_spin); | |
518 | ||
519 | left = td->thinktime - td->thinktime_spin; | |
520 | if (left) | |
521 | usec_sleep(td, left); | |
522 | } | |
9c1f7434 | 523 | } |
ebac4655 JA |
524 | } |
525 | ||
4d2413c6 | 526 | if (!td->error) { |
84585003 JA |
527 | if (td->cur_depth) |
528 | cleanup_pending_aio(td); | |
ebac4655 | 529 | |
84585003 JA |
530 | if (should_fsync(td) && td->end_fsync) { |
531 | td_set_runstate(td, TD_FSYNCING); | |
532 | for_each_file(td, f, i) | |
858a3d47 | 533 | fio_io_sync(td, f); |
84585003 | 534 | } |
5853e5a8 | 535 | } |
ebac4655 JA |
536 | } |
537 | ||
ebac4655 JA |
538 | static void cleanup_io_u(struct thread_data *td) |
539 | { | |
540 | struct list_head *entry, *n; | |
541 | struct io_u *io_u; | |
542 | ||
543 | list_for_each_safe(entry, n, &td->io_u_freelist) { | |
544 | io_u = list_entry(entry, struct io_u, list); | |
545 | ||
546 | list_del(&io_u->list); | |
547 | free(io_u); | |
548 | } | |
549 | ||
2f9ade3c | 550 | free_io_mem(td); |
ebac4655 JA |
551 | } |
552 | ||
6b9cea23 JA |
553 | /* |
554 | * "randomly" fill the buffer contents | |
555 | */ | |
66eeb296 | 556 | static void fill_rand_buf(struct io_u *io_u, int max_bs) |
6b9cea23 | 557 | { |
66eeb296 | 558 | int *ptr = io_u->buf; |
6b9cea23 JA |
559 | |
560 | while ((void *) ptr - io_u->buf < max_bs) { | |
561 | *ptr = rand() * 0x9e370001; | |
562 | ptr++; | |
563 | } | |
564 | } | |
565 | ||
ebac4655 JA |
566 | static int init_io_u(struct thread_data *td) |
567 | { | |
568 | struct io_u *io_u; | |
a00735e6 | 569 | unsigned int max_bs; |
ebac4655 JA |
570 | int i, max_units; |
571 | char *p; | |
572 | ||
2866c82d | 573 | if (td->io_ops->flags & FIO_CPUIO) |
b990b5c0 JA |
574 | return 0; |
575 | ||
2866c82d | 576 | if (td->io_ops->flags & FIO_SYNCIO) |
ebac4655 JA |
577 | max_units = 1; |
578 | else | |
579 | max_units = td->iodepth; | |
580 | ||
a00735e6 | 581 | max_bs = max(td->max_bs[DDIR_READ], td->max_bs[DDIR_WRITE]); |
74b025b0 JA |
582 | td->orig_buffer_size = max_bs * max_units; |
583 | ||
d0bdaf49 | 584 | if (td->mem_type == MEM_SHMHUGE || td->mem_type == MEM_MMAPHUGE) |
56bb17f2 | 585 | td->orig_buffer_size = (td->orig_buffer_size + td->hugepage_size - 1) & ~(td->hugepage_size - 1); |
74b025b0 | 586 | else |
29d610e1 | 587 | td->orig_buffer_size += page_mask; |
ebac4655 | 588 | |
2f9ade3c JA |
589 | if (allocate_io_mem(td)) |
590 | return 1; | |
ebac4655 | 591 | |
ebac4655 JA |
592 | p = ALIGN(td->orig_buffer); |
593 | for (i = 0; i < max_units; i++) { | |
594 | io_u = malloc(sizeof(*io_u)); | |
595 | memset(io_u, 0, sizeof(*io_u)); | |
596 | INIT_LIST_HEAD(&io_u->list); | |
597 | ||
a00735e6 | 598 | io_u->buf = p + max_bs * i; |
6b9cea23 | 599 | if (td_write(td) || td_rw(td)) |
a00735e6 | 600 | fill_rand_buf(io_u, max_bs); |
6b9cea23 | 601 | |
b1ff3403 | 602 | io_u->index = i; |
ebac4655 JA |
603 | list_add(&io_u->list, &td->io_u_freelist); |
604 | } | |
605 | ||
606 | return 0; | |
607 | } | |
608 | ||
da86774e JA |
609 | static int switch_ioscheduler(struct thread_data *td) |
610 | { | |
611 | char tmp[256], tmp2[128]; | |
612 | FILE *f; | |
613 | int ret; | |
614 | ||
f48b467c JA |
615 | if (td->io_ops->flags & FIO_CPUIO) |
616 | return 0; | |
617 | ||
da86774e JA |
618 | sprintf(tmp, "%s/queue/scheduler", td->sysfs_root); |
619 | ||
620 | f = fopen(tmp, "r+"); | |
621 | if (!f) { | |
622 | td_verror(td, errno); | |
623 | return 1; | |
624 | } | |
625 | ||
626 | /* | |
627 | * Set io scheduler. | |
628 | */ | |
629 | ret = fwrite(td->ioscheduler, strlen(td->ioscheduler), 1, f); | |
630 | if (ferror(f) || ret != 1) { | |
631 | td_verror(td, errno); | |
632 | fclose(f); | |
633 | return 1; | |
634 | } | |
635 | ||
636 | rewind(f); | |
637 | ||
638 | /* | |
639 | * Read back and check that the selected scheduler is now the default. | |
640 | */ | |
641 | ret = fread(tmp, 1, sizeof(tmp), f); | |
642 | if (ferror(f) || ret < 0) { | |
643 | td_verror(td, errno); | |
644 | fclose(f); | |
645 | return 1; | |
646 | } | |
647 | ||
648 | sprintf(tmp2, "[%s]", td->ioscheduler); | |
649 | if (!strstr(tmp, tmp2)) { | |
3b70d7e5 | 650 | log_err("fio: io scheduler %s not found\n", td->ioscheduler); |
da86774e JA |
651 | td_verror(td, EINVAL); |
652 | fclose(f); | |
653 | return 1; | |
654 | } | |
655 | ||
656 | fclose(f); | |
657 | return 0; | |
658 | } | |
659 | ||
ebac4655 JA |
660 | static void clear_io_state(struct thread_data *td) |
661 | { | |
53cdc686 JA |
662 | struct fio_file *f; |
663 | int i; | |
ebac4655 | 664 | |
ebac4655 JA |
665 | td->stat_io_bytes[0] = td->stat_io_bytes[1] = 0; |
666 | td->this_io_bytes[0] = td->this_io_bytes[1] = 0; | |
20dc95c4 | 667 | td->zone_bytes = 0; |
ebac4655 | 668 | |
53cdc686 JA |
669 | for_each_file(td, f, i) { |
670 | f->last_pos = 0; | |
671 | if (td->io_ops->flags & FIO_SYNCIO) | |
672 | lseek(f->fd, SEEK_SET, 0); | |
673 | ||
674 | if (f->file_map) | |
675 | memset(f->file_map, 0, f->num_maps * sizeof(long)); | |
676 | } | |
ebac4655 JA |
677 | } |
678 | ||
906c8d75 JA |
679 | /* |
680 | * Entry point for the thread based jobs. The process based jobs end up | |
681 | * here as well, after a little setup. | |
682 | */ | |
ebac4655 JA |
683 | static void *thread_main(void *data) |
684 | { | |
69008999 | 685 | unsigned long long runtime[2]; |
ebac4655 | 686 | struct thread_data *td = data; |
ebac4655 JA |
687 | |
688 | if (!td->use_thread) | |
689 | setsid(); | |
690 | ||
691 | td->pid = getpid(); | |
692 | ||
aea47d44 JA |
693 | INIT_LIST_HEAD(&td->io_u_freelist); |
694 | INIT_LIST_HEAD(&td->io_u_busylist); | |
695 | INIT_LIST_HEAD(&td->io_hist_list); | |
696 | INIT_LIST_HEAD(&td->io_log_list); | |
697 | ||
ebac4655 JA |
698 | if (init_io_u(td)) |
699 | goto err; | |
700 | ||
701 | if (fio_setaffinity(td) == -1) { | |
702 | td_verror(td, errno); | |
703 | goto err; | |
704 | } | |
705 | ||
aea47d44 JA |
706 | if (init_iolog(td)) |
707 | goto err; | |
708 | ||
ebac4655 JA |
709 | if (td->ioprio) { |
710 | if (ioprio_set(IOPRIO_WHO_PROCESS, 0, td->ioprio) == -1) { | |
711 | td_verror(td, errno); | |
712 | goto err; | |
713 | } | |
714 | } | |
715 | ||
1056eaad | 716 | if (nice(td->nice) == -1) { |
b6f4d880 JA |
717 | td_verror(td, errno); |
718 | goto err; | |
719 | } | |
720 | ||
75154845 JA |
721 | if (init_random_state(td)) |
722 | goto err; | |
723 | ||
56f9498d JA |
724 | if (td->ioscheduler && switch_ioscheduler(td)) |
725 | goto err; | |
da86774e | 726 | |
75154845 | 727 | td_set_runstate(td, TD_INITIALIZED); |
bbfd6b00 JA |
728 | fio_sem_up(&startup_sem); |
729 | fio_sem_down(&td->mutex); | |
ebac4655 | 730 | |
53cdc686 | 731 | if (!td->create_serialize && setup_files(td)) |
ebac4655 | 732 | goto err; |
21972cde JA |
733 | if (open_files(td)) |
734 | goto err; | |
ebac4655 | 735 | |
7d6c5283 JA |
736 | /* |
737 | * Do this late, as some IO engines would like to have the | |
738 | * files setup prior to initializing structures. | |
739 | */ | |
740 | if (td_io_init(td)) | |
741 | goto err; | |
742 | ||
69cfd7e0 JA |
743 | if (td->exec_prerun) { |
744 | if (system(td->exec_prerun) < 0) | |
745 | goto err; | |
746 | } | |
4e0ba8af | 747 | |
69008999 | 748 | fio_gettime(&td->epoch, NULL); |
36dff966 | 749 | getrusage(RUSAGE_SELF, &td->ru_start); |
69008999 JA |
750 | |
751 | runtime[0] = runtime[1] = 0; | |
ebac4655 | 752 | while (td->loops--) { |
02bcaa8c | 753 | fio_gettime(&td->start, NULL); |
ebac4655 JA |
754 | memcpy(&td->stat_sample_time, &td->start, sizeof(td->start)); |
755 | ||
756 | if (td->ratemin) | |
757 | memcpy(&td->lastrate, &td->stat_sample_time, sizeof(td->lastrate)); | |
758 | ||
759 | clear_io_state(td); | |
760 | prune_io_piece_log(td); | |
761 | ||
2866c82d | 762 | if (td->io_ops->flags & FIO_CPUIO) |
b990b5c0 JA |
763 | do_cpuio(td); |
764 | else | |
765 | do_io(td); | |
ebac4655 | 766 | |
69008999 | 767 | runtime[td->ddir] += utime_since_now(&td->start); |
aea47d44 | 768 | if (td_rw(td) && td->io_bytes[td->ddir ^ 1]) |
69008999 | 769 | runtime[td->ddir ^ 1] = runtime[td->ddir]; |
3d60d1ed | 770 | |
ebac4655 JA |
771 | if (td->error || td->terminate) |
772 | break; | |
773 | ||
774 | if (td->verify == VERIFY_NONE) | |
775 | continue; | |
776 | ||
777 | clear_io_state(td); | |
02bcaa8c | 778 | fio_gettime(&td->start, NULL); |
ebac4655 JA |
779 | |
780 | do_verify(td); | |
781 | ||
69008999 | 782 | runtime[DDIR_READ] += utime_since_now(&td->start); |
ebac4655 JA |
783 | |
784 | if (td->error || td->terminate) | |
785 | break; | |
786 | } | |
787 | ||
36dff966 | 788 | update_rusage_stat(td); |
69008999 JA |
789 | fio_gettime(&td->end_time, NULL); |
790 | td->runtime[0] = runtime[0] / 1000; | |
791 | td->runtime[1] = runtime[1] / 1000; | |
792 | ||
ebac4655 JA |
793 | if (td->bw_log) |
794 | finish_log(td, td->bw_log, "bw"); | |
795 | if (td->slat_log) | |
796 | finish_log(td, td->slat_log, "slat"); | |
797 | if (td->clat_log) | |
798 | finish_log(td, td->clat_log, "clat"); | |
076efc7c | 799 | if (td->write_iolog_file) |
843a7413 | 800 | write_iolog_close(td); |
69cfd7e0 JA |
801 | if (td->exec_postrun) { |
802 | if (system(td->exec_postrun) < 0) | |
803 | log_err("fio: postrun %s failed\n", td->exec_postrun); | |
804 | } | |
ebac4655 JA |
805 | |
806 | if (exitall_on_terminate) | |
6ce15a32 | 807 | terminate_threads(td->groupid, 0); |
ebac4655 JA |
808 | |
809 | err: | |
5bf13a5a JA |
810 | if (td->error) |
811 | printf("fio: pid=%d, err=%d/%s\n", td->pid, td->error, td->verror); | |
53cdc686 | 812 | close_files(td); |
2866c82d | 813 | close_ioengine(td); |
ebac4655 | 814 | cleanup_io_u(td); |
ebac4655 | 815 | td_set_runstate(td, TD_EXITED); |
a6418147 | 816 | return (void *) td->error; |
ebac4655 JA |
817 | } |
818 | ||
906c8d75 JA |
819 | /* |
820 | * We cannot pass the td data into a forked process, so attach the td and | |
821 | * pass it to the thread worker. | |
822 | */ | |
a6418147 | 823 | static int fork_main(int shmid, int offset) |
ebac4655 JA |
824 | { |
825 | struct thread_data *td; | |
a6418147 | 826 | void *data, *ret; |
ebac4655 JA |
827 | |
828 | data = shmat(shmid, NULL, 0); | |
829 | if (data == (void *) -1) { | |
a6418147 JA |
830 | int __err = errno; |
831 | ||
ebac4655 | 832 | perror("shmat"); |
a6418147 | 833 | return __err; |
ebac4655 JA |
834 | } |
835 | ||
836 | td = data + offset * sizeof(struct thread_data); | |
a6418147 | 837 | ret = thread_main(td); |
ebac4655 | 838 | shmdt(data); |
a6418147 | 839 | return (int) ret; |
ebac4655 JA |
840 | } |
841 | ||
906c8d75 JA |
842 | /* |
843 | * Run over the job map and reap the threads that have exited, if any. | |
844 | */ | |
ebac4655 JA |
845 | static void reap_threads(int *nr_running, int *t_rate, int *m_rate) |
846 | { | |
34572e28 | 847 | struct thread_data *td; |
fab6aa71 | 848 | int i, cputhreads, pending, status, ret; |
ebac4655 JA |
849 | |
850 | /* | |
851 | * reap exited threads (TD_EXITED -> TD_REAPED) | |
852 | */ | |
4d2413c6 | 853 | pending = cputhreads = 0; |
34572e28 | 854 | for_each_td(td, i) { |
84585003 JA |
855 | /* |
856 | * ->io_ops is NULL for a thread that has closed its | |
857 | * io engine | |
858 | */ | |
859 | if (td->io_ops && td->io_ops->flags & FIO_CPUIO) | |
b990b5c0 JA |
860 | cputhreads++; |
861 | ||
fab6aa71 JA |
862 | if (td->runstate < TD_EXITED) { |
863 | /* | |
864 | * check if someone quit or got killed in an unusual way | |
865 | */ | |
866 | ret = waitpid(td->pid, &status, WNOHANG); | |
867 | if (ret < 0) | |
868 | perror("waitpid"); | |
869 | else if ((ret == td->pid) && WIFSIGNALED(status)) { | |
870 | int sig = WTERMSIG(status); | |
871 | ||
872 | log_err("fio: pid=%d, got signal=%d\n", td->pid, sig); | |
873 | td_set_runstate(td, TD_REAPED); | |
874 | goto reaped; | |
875 | } | |
876 | } | |
877 | ||
4d2413c6 JA |
878 | if (td->runstate != TD_EXITED) { |
879 | if (td->runstate < TD_RUNNING) | |
880 | pending++; | |
881 | ||
ebac4655 | 882 | continue; |
4d2413c6 | 883 | } |
ebac4655 | 884 | |
437c9b71 JA |
885 | if (td->error) |
886 | exit_value++; | |
887 | ||
ebac4655 JA |
888 | td_set_runstate(td, TD_REAPED); |
889 | ||
890 | if (td->use_thread) { | |
891 | long ret; | |
892 | ||
893 | if (pthread_join(td->thread, (void *) &ret)) | |
894 | perror("thread_join"); | |
a6418147 JA |
895 | } else { |
896 | int status; | |
897 | ||
fab6aa71 JA |
898 | ret = waitpid(td->pid, &status, 0); |
899 | if (ret < 0) | |
900 | perror("waitpid"); | |
73170f19 | 901 | else if (WIFEXITED(status) && WEXITSTATUS(status)) { |
a6418147 JA |
902 | if (!exit_value) |
903 | exit_value++; | |
904 | } | |
905 | } | |
ebac4655 | 906 | |
fab6aa71 | 907 | reaped: |
ebac4655 JA |
908 | (*nr_running)--; |
909 | (*m_rate) -= td->ratemin; | |
910 | (*t_rate) -= td->rate; | |
911 | } | |
b990b5c0 | 912 | |
4d2413c6 | 913 | if (*nr_running == cputhreads && !pending) |
6ce15a32 | 914 | terminate_threads(TERMINATE_ALL, 0); |
ebac4655 JA |
915 | } |
916 | ||
906c8d75 JA |
917 | /* |
918 | * Main function for kicking off and reaping jobs, as needed. | |
919 | */ | |
ebac4655 JA |
920 | static void run_threads(void) |
921 | { | |
ebac4655 JA |
922 | struct thread_data *td; |
923 | unsigned long spent; | |
924 | int i, todo, nr_running, m_rate, t_rate, nr_started; | |
fcb6ade2 | 925 | |
2f9ade3c JA |
926 | if (fio_pin_memory()) |
927 | return; | |
ebac4655 | 928 | |
c6ae0a5b JA |
929 | if (!terse_output) { |
930 | printf("Starting %d thread%s\n", thread_number, thread_number > 1 ? "s" : ""); | |
931 | fflush(stdout); | |
932 | } | |
c04f7ec3 | 933 | |
4efa970e JA |
934 | signal(SIGINT, sig_handler); |
935 | signal(SIGALRM, sig_handler); | |
936 | ||
ebac4655 JA |
937 | todo = thread_number; |
938 | nr_running = 0; | |
939 | nr_started = 0; | |
940 | m_rate = t_rate = 0; | |
941 | ||
34572e28 | 942 | for_each_td(td, i) { |
263e529f | 943 | print_status_init(td->thread_number - 1); |
ebac4655 | 944 | |
380cf265 JA |
945 | if (!td->create_serialize) { |
946 | init_disk_util(td); | |
ebac4655 | 947 | continue; |
380cf265 | 948 | } |
ebac4655 JA |
949 | |
950 | /* | |
951 | * do file setup here so it happens sequentially, | |
952 | * we don't want X number of threads getting their | |
953 | * client data interspersed on disk | |
954 | */ | |
53cdc686 | 955 | if (setup_files(td)) { |
5bf13a5a JA |
956 | exit_value++; |
957 | if (td->error) | |
958 | log_err("fio: pid=%d, err=%d/%s\n", td->pid, td->error, td->verror); | |
ebac4655 JA |
959 | td_set_runstate(td, TD_REAPED); |
960 | todo--; | |
961 | } | |
380cf265 JA |
962 | |
963 | init_disk_util(td); | |
ebac4655 JA |
964 | } |
965 | ||
ebac4655 | 966 | while (todo) { |
75154845 JA |
967 | struct thread_data *map[MAX_JOBS]; |
968 | struct timeval this_start; | |
969 | int this_jobs = 0, left; | |
970 | ||
ebac4655 JA |
971 | /* |
972 | * create threads (TD_NOT_CREATED -> TD_CREATED) | |
973 | */ | |
34572e28 | 974 | for_each_td(td, i) { |
ebac4655 JA |
975 | if (td->runstate != TD_NOT_CREATED) |
976 | continue; | |
977 | ||
978 | /* | |
979 | * never got a chance to start, killed by other | |
980 | * thread for some reason | |
981 | */ | |
982 | if (td->terminate) { | |
983 | todo--; | |
984 | continue; | |
985 | } | |
986 | ||
987 | if (td->start_delay) { | |
263e529f | 988 | spent = mtime_since_genesis(); |
ebac4655 JA |
989 | |
990 | if (td->start_delay * 1000 > spent) | |
991 | continue; | |
992 | } | |
993 | ||
994 | if (td->stonewall && (nr_started || nr_running)) | |
995 | break; | |
996 | ||
75154845 JA |
997 | /* |
998 | * Set state to created. Thread will transition | |
999 | * to TD_INITIALIZED when it's done setting up. | |
1000 | */ | |
ebac4655 | 1001 | td_set_runstate(td, TD_CREATED); |
75154845 | 1002 | map[this_jobs++] = td; |
bbfd6b00 | 1003 | fio_sem_init(&startup_sem, 1); |
ebac4655 JA |
1004 | nr_started++; |
1005 | ||
1006 | if (td->use_thread) { | |
1007 | if (pthread_create(&td->thread, NULL, thread_main, td)) { | |
1008 | perror("thread_create"); | |
1009 | nr_started--; | |
1010 | } | |
1011 | } else { | |
1012 | if (fork()) | |
bbfd6b00 | 1013 | fio_sem_down(&startup_sem); |
ebac4655 | 1014 | else { |
a6418147 JA |
1015 | int ret = fork_main(shm_id, i); |
1016 | ||
1017 | exit(ret); | |
ebac4655 JA |
1018 | } |
1019 | } | |
1020 | } | |
1021 | ||
1022 | /* | |
75154845 JA |
1023 | * Wait for the started threads to transition to |
1024 | * TD_INITIALIZED. | |
ebac4655 | 1025 | */ |
02bcaa8c | 1026 | fio_gettime(&this_start, NULL); |
75154845 | 1027 | left = this_jobs; |
6ce15a32 | 1028 | while (left && !fio_abort) { |
75154845 JA |
1029 | if (mtime_since_now(&this_start) > JOB_START_TIMEOUT) |
1030 | break; | |
1031 | ||
1032 | usleep(100000); | |
1033 | ||
1034 | for (i = 0; i < this_jobs; i++) { | |
1035 | td = map[i]; | |
1036 | if (!td) | |
1037 | continue; | |
b6f4d880 | 1038 | if (td->runstate == TD_INITIALIZED) { |
75154845 JA |
1039 | map[i] = NULL; |
1040 | left--; | |
b6f4d880 JA |
1041 | } else if (td->runstate >= TD_EXITED) { |
1042 | map[i] = NULL; | |
1043 | left--; | |
1044 | todo--; | |
1045 | nr_running++; /* work-around... */ | |
75154845 JA |
1046 | } |
1047 | } | |
1048 | } | |
1049 | ||
1050 | if (left) { | |
3b70d7e5 | 1051 | log_err("fio: %d jobs failed to start\n", left); |
75154845 JA |
1052 | for (i = 0; i < this_jobs; i++) { |
1053 | td = map[i]; | |
1054 | if (!td) | |
1055 | continue; | |
1056 | kill(td->pid, SIGTERM); | |
1057 | } | |
1058 | break; | |
1059 | } | |
1060 | ||
1061 | /* | |
b6f4d880 | 1062 | * start created threads (TD_INITIALIZED -> TD_RUNNING). |
75154845 | 1063 | */ |
34572e28 | 1064 | for_each_td(td, i) { |
75154845 | 1065 | if (td->runstate != TD_INITIALIZED) |
ebac4655 JA |
1066 | continue; |
1067 | ||
1068 | td_set_runstate(td, TD_RUNNING); | |
1069 | nr_running++; | |
1070 | nr_started--; | |
1071 | m_rate += td->ratemin; | |
1072 | t_rate += td->rate; | |
75154845 | 1073 | todo--; |
bbfd6b00 | 1074 | fio_sem_up(&td->mutex); |
ebac4655 JA |
1075 | } |
1076 | ||
1077 | reap_threads(&nr_running, &t_rate, &m_rate); | |
1078 | ||
1079 | if (todo) | |
1080 | usleep(100000); | |
1081 | } | |
1082 | ||
1083 | while (nr_running) { | |
1084 | reap_threads(&nr_running, &t_rate, &m_rate); | |
1085 | usleep(10000); | |
1086 | } | |
1087 | ||
1088 | update_io_ticks(); | |
2f9ade3c | 1089 | fio_unpin_memory(); |
ebac4655 JA |
1090 | } |
1091 | ||
ebac4655 JA |
1092 | int main(int argc, char *argv[]) |
1093 | { | |
29d610e1 JA |
1094 | long ps; |
1095 | ||
dbe1125e JA |
1096 | /* |
1097 | * We need locale for number printing, if it isn't set then just | |
1098 | * go with the US format. | |
1099 | */ | |
1100 | if (!getenv("LC_NUMERIC")) | |
1101 | setlocale(LC_NUMERIC, "en_US"); | |
1102 | ||
ebac4655 JA |
1103 | if (parse_options(argc, argv)) |
1104 | return 1; | |
1105 | ||
1106 | if (!thread_number) { | |
3b70d7e5 | 1107 | log_err("Nothing to do\n"); |
ebac4655 JA |
1108 | return 1; |
1109 | } | |
1110 | ||
29d610e1 JA |
1111 | ps = sysconf(_SC_PAGESIZE); |
1112 | if (ps < 0) { | |
1113 | log_err("Failed to get page size\n"); | |
1114 | return 1; | |
1115 | } | |
1116 | ||
1117 | page_mask = ps - 1; | |
1118 | ||
bb3884d8 JA |
1119 | if (write_bw_log) { |
1120 | setup_log(&agg_io_log[DDIR_READ]); | |
1121 | setup_log(&agg_io_log[DDIR_WRITE]); | |
1122 | } | |
1123 | ||
ebac4655 JA |
1124 | disk_util_timer_arm(); |
1125 | ||
1126 | run_threads(); | |
6ce15a32 | 1127 | |
bb3884d8 | 1128 | if (!fio_abort) { |
6ce15a32 | 1129 | show_run_stats(); |
bb3884d8 JA |
1130 | if (write_bw_log) { |
1131 | __finish_log(agg_io_log[DDIR_READ],"agg-read_bw.log"); | |
1132 | __finish_log(agg_io_log[DDIR_WRITE],"agg-write_bw.log"); | |
1133 | } | |
1134 | } | |
ebac4655 | 1135 | |
437c9b71 | 1136 | return exit_value; |
ebac4655 | 1137 | } |