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> | |
ebac4655 | 29 | #include <assert.h> |
ebac4655 JA |
30 | #include <sys/stat.h> |
31 | #include <sys/wait.h> | |
32 | #include <sys/ipc.h> | |
33 | #include <sys/shm.h> | |
34 | #include <sys/ioctl.h> | |
35 | #include <sys/mman.h> | |
36 | ||
37 | #include "fio.h" | |
38 | #include "os.h" | |
39 | ||
40 | #define MASK (4095) | |
41 | ||
42 | #define ALIGN(buf) (char *) (((unsigned long) (buf) + MASK) & ~(MASK)) | |
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; |
ebac4655 JA |
51 | |
52 | #define TERMINATE_ALL (-1) | |
75154845 | 53 | #define JOB_START_TIMEOUT (5 * 1000) |
ebac4655 | 54 | |
6ce15a32 JA |
55 | static inline void td_set_runstate(struct thread_data *td, int runstate) |
56 | { | |
57 | td->runstate = runstate; | |
58 | } | |
59 | ||
60 | static void terminate_threads(int group_id, int forced_kill) | |
ebac4655 | 61 | { |
34572e28 | 62 | struct thread_data *td; |
ebac4655 JA |
63 | int i; |
64 | ||
34572e28 | 65 | for_each_td(td, i) { |
ebac4655 JA |
66 | if (group_id == TERMINATE_ALL || groupid == td->groupid) { |
67 | td->terminate = 1; | |
68 | td->start_delay = 0; | |
6ce15a32 JA |
69 | if (forced_kill) |
70 | td_set_runstate(td, TD_EXITED); | |
ebac4655 JA |
71 | } |
72 | } | |
73 | } | |
74 | ||
75 | static void sig_handler(int sig) | |
76 | { | |
77 | switch (sig) { | |
78 | case SIGALRM: | |
79 | update_io_ticks(); | |
80 | disk_util_timer_arm(); | |
81 | print_thread_status(); | |
82 | break; | |
6ce15a32 JA |
83 | case SIGSEGV: |
84 | fprintf(stderr, "fio: got segfault, aborting\n"); | |
85 | terminate_threads(TERMINATE_ALL, 1); | |
86 | fio_abort = 1; | |
87 | exit(0); | |
ebac4655 | 88 | default: |
6ce15a32 | 89 | printf("\nfio: terminating on signal %d\n", sig); |
ebac4655 | 90 | fflush(stdout); |
6ce15a32 | 91 | terminate_threads(TERMINATE_ALL, 0); |
ebac4655 JA |
92 | break; |
93 | } | |
94 | } | |
95 | ||
906c8d75 JA |
96 | /* |
97 | * Check if we are above the minimum rate given. | |
98 | */ | |
ebac4655 JA |
99 | static int check_min_rate(struct thread_data *td, struct timeval *now) |
100 | { | |
101 | unsigned long spent; | |
102 | unsigned long rate; | |
103 | int ddir = td->ddir; | |
104 | ||
105 | /* | |
106 | * allow a 2 second settle period in the beginning | |
107 | */ | |
108 | if (mtime_since(&td->start, now) < 2000) | |
109 | return 0; | |
110 | ||
111 | /* | |
112 | * if rate blocks is set, sample is running | |
113 | */ | |
114 | if (td->rate_bytes) { | |
115 | spent = mtime_since(&td->lastrate, now); | |
116 | if (spent < td->ratecycle) | |
117 | return 0; | |
118 | ||
119 | rate = (td->this_io_bytes[ddir] - td->rate_bytes) / spent; | |
120 | if (rate < td->ratemin) { | |
1e97cce9 | 121 | fprintf(f_out, "%s: min rate %u not met, got %luKiB/sec\n", td->name, td->ratemin, rate); |
ebac4655 JA |
122 | return 1; |
123 | } | |
124 | } | |
125 | ||
126 | td->rate_bytes = td->this_io_bytes[ddir]; | |
127 | memcpy(&td->lastrate, now, sizeof(*now)); | |
128 | return 0; | |
129 | } | |
130 | ||
131 | static inline int runtime_exceeded(struct thread_data *td, struct timeval *t) | |
132 | { | |
133 | if (!td->timeout) | |
134 | return 0; | |
135 | if (mtime_since(&td->epoch, t) >= td->timeout * 1000) | |
136 | return 1; | |
137 | ||
138 | return 0; | |
139 | } | |
140 | ||
53cdc686 JA |
141 | static struct fio_file *get_next_file(struct thread_data *td) |
142 | { | |
0ab8db89 | 143 | unsigned int old_next_file = td->next_file; |
b2a15192 JA |
144 | struct fio_file *f; |
145 | ||
146 | do { | |
147 | f = &td->files[td->next_file]; | |
148 | ||
149 | td->next_file++; | |
150 | if (td->next_file >= td->nr_files) | |
151 | td->next_file = 0; | |
152 | ||
153 | if (f->fd != -1) | |
154 | break; | |
53cdc686 | 155 | |
b2a15192 JA |
156 | f = NULL; |
157 | } while (td->next_file != old_next_file); | |
53cdc686 JA |
158 | |
159 | return f; | |
160 | } | |
161 | ||
906c8d75 JA |
162 | /* |
163 | * When job exits, we can cancel the in-flight IO if we are using async | |
164 | * io. Attempt to do so. | |
165 | */ | |
ebac4655 JA |
166 | static void cleanup_pending_aio(struct thread_data *td) |
167 | { | |
168 | struct timespec ts = { .tv_sec = 0, .tv_nsec = 0}; | |
169 | struct list_head *entry, *n; | |
170 | struct io_completion_data icd; | |
171 | struct io_u *io_u; | |
172 | int r; | |
173 | ||
174 | /* | |
175 | * get immediately available events, if any | |
176 | */ | |
45bee283 | 177 | r = td_io_getevents(td, 0, td->cur_depth, &ts); |
ebac4655 JA |
178 | if (r > 0) { |
179 | icd.nr = r; | |
180 | ios_completed(td, &icd); | |
181 | } | |
182 | ||
183 | /* | |
184 | * now cancel remaining active events | |
185 | */ | |
2866c82d | 186 | if (td->io_ops->cancel) { |
ebac4655 JA |
187 | list_for_each_safe(entry, n, &td->io_u_busylist) { |
188 | io_u = list_entry(entry, struct io_u, list); | |
189 | ||
2866c82d | 190 | r = td->io_ops->cancel(td, io_u); |
ebac4655 JA |
191 | if (!r) |
192 | put_io_u(td, io_u); | |
193 | } | |
194 | } | |
195 | ||
196 | if (td->cur_depth) { | |
45bee283 | 197 | r = td_io_getevents(td, td->cur_depth, td->cur_depth, NULL); |
ebac4655 JA |
198 | if (r > 0) { |
199 | icd.nr = r; | |
200 | ios_completed(td, &icd); | |
201 | } | |
202 | } | |
203 | } | |
204 | ||
858a3d47 JA |
205 | /* |
206 | * Helper to handle the final sync of a file. Works just like the normal | |
207 | * io path, just does everything sync. | |
208 | */ | |
209 | static int fio_io_sync(struct thread_data *td, struct fio_file *f) | |
210 | { | |
211 | struct io_u *io_u = __get_io_u(td); | |
212 | struct io_completion_data icd; | |
213 | int ret; | |
214 | ||
215 | if (!io_u) | |
216 | return 1; | |
217 | ||
218 | io_u->ddir = DDIR_SYNC; | |
219 | io_u->file = f; | |
220 | ||
221 | if (td_io_prep(td, io_u)) { | |
222 | put_io_u(td, io_u); | |
223 | return 1; | |
224 | } | |
225 | ||
226 | ret = td_io_queue(td, io_u); | |
227 | if (ret) { | |
353a7e0e | 228 | td_verror(td, io_u->error); |
858a3d47 | 229 | put_io_u(td, io_u); |
858a3d47 JA |
230 | return 1; |
231 | } | |
232 | ||
233 | ret = td_io_getevents(td, 1, td->cur_depth, NULL); | |
234 | if (ret < 0) { | |
353a7e0e | 235 | td_verror(td, ret); |
858a3d47 JA |
236 | return 1; |
237 | } | |
238 | ||
239 | icd.nr = ret; | |
240 | ios_completed(td, &icd); | |
241 | if (icd.error) { | |
242 | td_verror(td, icd.error); | |
243 | return 1; | |
244 | } | |
245 | ||
246 | return 0; | |
247 | } | |
248 | ||
906c8d75 JA |
249 | /* |
250 | * The main verify engine. Runs over the writes we previusly submitted, | |
251 | * reads the blocks back in, and checks the crc/md5 of the data. | |
252 | */ | |
1e97cce9 | 253 | static void do_verify(struct thread_data *td) |
ebac4655 | 254 | { |
ebac4655 JA |
255 | struct io_u *io_u, *v_io_u = NULL; |
256 | struct io_completion_data icd; | |
53cdc686 | 257 | struct fio_file *f; |
e5b401d4 JA |
258 | int ret, i; |
259 | ||
260 | /* | |
261 | * sync io first and invalidate cache, to make sure we really | |
262 | * read from disk. | |
263 | */ | |
264 | for_each_file(td, f, i) { | |
858a3d47 | 265 | fio_io_sync(td, f); |
e5b401d4 JA |
266 | file_invalidate_cache(td, f); |
267 | } | |
ebac4655 JA |
268 | |
269 | td_set_runstate(td, TD_VERIFYING); | |
270 | ||
271 | do { | |
272 | if (td->terminate) | |
273 | break; | |
274 | ||
ebac4655 JA |
275 | io_u = __get_io_u(td); |
276 | if (!io_u) | |
277 | break; | |
278 | ||
02bcaa8c JA |
279 | if (runtime_exceeded(td, &io_u->start_time)) { |
280 | put_io_u(td, io_u); | |
281 | break; | |
282 | } | |
283 | ||
aea47d44 | 284 | if (get_next_verify(td, io_u)) { |
ebac4655 JA |
285 | put_io_u(td, io_u); |
286 | break; | |
287 | } | |
288 | ||
53cdc686 JA |
289 | f = get_next_file(td); |
290 | if (!f) | |
291 | break; | |
292 | ||
293 | io_u->file = f; | |
294 | ||
aea47d44 | 295 | if (td_io_prep(td, io_u)) { |
ebac4655 JA |
296 | put_io_u(td, io_u); |
297 | break; | |
298 | } | |
299 | ||
45bee283 | 300 | ret = td_io_queue(td, io_u); |
ebac4655 | 301 | if (ret) { |
353a7e0e | 302 | td_verror(td, io_u->error); |
ebac4655 | 303 | put_io_u(td, io_u); |
ebac4655 JA |
304 | break; |
305 | } | |
306 | ||
307 | /* | |
308 | * we have one pending to verify, do that while | |
309 | * we are doing io on the next one | |
310 | */ | |
311 | if (do_io_u_verify(td, &v_io_u)) | |
312 | break; | |
313 | ||
45bee283 | 314 | ret = td_io_getevents(td, 1, 1, NULL); |
ebac4655 JA |
315 | if (ret != 1) { |
316 | if (ret < 0) | |
317 | td_verror(td, ret); | |
318 | break; | |
319 | } | |
320 | ||
2866c82d | 321 | v_io_u = td->io_ops->event(td, 0); |
ebac4655 JA |
322 | icd.nr = 1; |
323 | icd.error = 0; | |
02bcaa8c | 324 | fio_gettime(&icd.time, NULL); |
ebac4655 JA |
325 | io_completed(td, v_io_u, &icd); |
326 | ||
327 | if (icd.error) { | |
328 | td_verror(td, icd.error); | |
329 | put_io_u(td, v_io_u); | |
330 | v_io_u = NULL; | |
331 | break; | |
332 | } | |
333 | ||
ebac4655 JA |
334 | /* |
335 | * if we can't submit more io, we need to verify now | |
336 | */ | |
337 | if (queue_full(td) && do_io_u_verify(td, &v_io_u)) | |
338 | break; | |
339 | ||
340 | } while (1); | |
341 | ||
342 | do_io_u_verify(td, &v_io_u); | |
343 | ||
344 | if (td->cur_depth) | |
345 | cleanup_pending_aio(td); | |
346 | ||
347 | td_set_runstate(td, TD_RUNNING); | |
348 | } | |
349 | ||
b990b5c0 JA |
350 | /* |
351 | * Not really an io thread, all it does is burn CPU cycles in the specified | |
352 | * manner. | |
353 | */ | |
354 | static void do_cpuio(struct thread_data *td) | |
355 | { | |
356 | struct timeval e; | |
357 | int split = 100 / td->cpuload; | |
358 | int i = 0; | |
359 | ||
360 | while (!td->terminate) { | |
02bcaa8c | 361 | fio_gettime(&e, NULL); |
b990b5c0 JA |
362 | |
363 | if (runtime_exceeded(td, &e)) | |
364 | break; | |
365 | ||
366 | if (!(i % split)) | |
367 | __usec_sleep(10000); | |
368 | else | |
369 | usec_sleep(td, 10000); | |
370 | ||
371 | i++; | |
372 | } | |
373 | } | |
374 | ||
32cd46a0 | 375 | /* |
906c8d75 | 376 | * Main IO worker function. It retrieves io_u's to process and queues |
32cd46a0 JA |
377 | * and reaps them, checking for rate and errors along the way. |
378 | */ | |
ebac4655 JA |
379 | static void do_io(struct thread_data *td) |
380 | { | |
381 | struct io_completion_data icd; | |
02bcaa8c | 382 | struct timeval s; |
ebac4655 | 383 | unsigned long usec; |
53cdc686 | 384 | struct fio_file *f; |
84585003 | 385 | int i, ret = 0; |
ebac4655 | 386 | |
5853e5a8 JA |
387 | td_set_runstate(td, TD_RUNNING); |
388 | ||
ebac4655 | 389 | while (td->this_io_bytes[td->ddir] < td->io_size) { |
ebac4655 | 390 | struct timespec *timeout; |
84585003 | 391 | int min_evts = 0; |
ebac4655 JA |
392 | struct io_u *io_u; |
393 | ||
394 | if (td->terminate) | |
395 | break; | |
396 | ||
53cdc686 JA |
397 | f = get_next_file(td); |
398 | if (!f) | |
399 | break; | |
400 | ||
401 | io_u = get_io_u(td, f); | |
ebac4655 JA |
402 | if (!io_u) |
403 | break; | |
404 | ||
405 | memcpy(&s, &io_u->start_time, sizeof(s)); | |
406 | ||
45bee283 | 407 | ret = td_io_queue(td, io_u); |
ebac4655 | 408 | if (ret) { |
353a7e0e | 409 | td_verror(td, io_u->error); |
ebac4655 | 410 | put_io_u(td, io_u); |
ebac4655 JA |
411 | break; |
412 | } | |
413 | ||
414 | add_slat_sample(td, io_u->ddir, mtime_since(&io_u->start_time, &io_u->issue_time)); | |
415 | ||
416 | if (td->cur_depth < td->iodepth) { | |
8d7ad8d9 JA |
417 | struct timespec ts = { .tv_sec = 0, .tv_nsec = 0}; |
418 | ||
ebac4655 JA |
419 | timeout = &ts; |
420 | min_evts = 0; | |
421 | } else { | |
422 | timeout = NULL; | |
423 | min_evts = 1; | |
424 | } | |
425 | ||
45bee283 | 426 | ret = td_io_getevents(td, min_evts, td->cur_depth, timeout); |
ebac4655 | 427 | if (ret < 0) { |
87dc1ab1 | 428 | td_verror(td, ret); |
ebac4655 JA |
429 | break; |
430 | } else if (!ret) | |
431 | continue; | |
432 | ||
433 | icd.nr = ret; | |
434 | ios_completed(td, &icd); | |
435 | if (icd.error) { | |
436 | td_verror(td, icd.error); | |
437 | break; | |
438 | } | |
439 | ||
440 | /* | |
441 | * the rate is batched for now, it should work for batches | |
442 | * of completions except the very first one which may look | |
443 | * a little bursty | |
444 | */ | |
02bcaa8c | 445 | usec = utime_since(&s, &icd.time); |
ebac4655 | 446 | |
a00735e6 | 447 | rate_throttle(td, usec, icd.bytes_done[td->ddir], td->ddir); |
ebac4655 | 448 | |
02bcaa8c | 449 | if (check_min_rate(td, &icd.time)) { |
98aa62d8 | 450 | if (exitall_on_terminate) |
6ce15a32 | 451 | terminate_threads(td->groupid, 0); |
fd841467 | 452 | td_verror(td, ENODATA); |
ebac4655 JA |
453 | break; |
454 | } | |
455 | ||
02bcaa8c | 456 | if (runtime_exceeded(td, &icd.time)) |
ebac4655 JA |
457 | break; |
458 | ||
9c1f7434 JA |
459 | if (td->thinktime) { |
460 | unsigned long long b; | |
461 | ||
462 | b = td->io_blocks[0] + td->io_blocks[1]; | |
25309a33 | 463 | if (!(b % td->thinktime_blocks)) |
9c1f7434 JA |
464 | usec_sleep(td, td->thinktime); |
465 | } | |
ebac4655 JA |
466 | } |
467 | ||
4d2413c6 | 468 | if (!td->error) { |
84585003 JA |
469 | if (td->cur_depth) |
470 | cleanup_pending_aio(td); | |
ebac4655 | 471 | |
84585003 JA |
472 | if (should_fsync(td) && td->end_fsync) { |
473 | td_set_runstate(td, TD_FSYNCING); | |
474 | for_each_file(td, f, i) | |
858a3d47 | 475 | fio_io_sync(td, f); |
84585003 | 476 | } |
5853e5a8 | 477 | } |
ebac4655 JA |
478 | } |
479 | ||
ebac4655 JA |
480 | static void cleanup_io_u(struct thread_data *td) |
481 | { | |
482 | struct list_head *entry, *n; | |
483 | struct io_u *io_u; | |
484 | ||
485 | list_for_each_safe(entry, n, &td->io_u_freelist) { | |
486 | io_u = list_entry(entry, struct io_u, list); | |
487 | ||
488 | list_del(&io_u->list); | |
489 | free(io_u); | |
490 | } | |
491 | ||
2f9ade3c | 492 | free_io_mem(td); |
ebac4655 JA |
493 | } |
494 | ||
6b9cea23 JA |
495 | /* |
496 | * "randomly" fill the buffer contents | |
497 | */ | |
66eeb296 | 498 | static void fill_rand_buf(struct io_u *io_u, int max_bs) |
6b9cea23 | 499 | { |
66eeb296 | 500 | int *ptr = io_u->buf; |
6b9cea23 JA |
501 | |
502 | while ((void *) ptr - io_u->buf < max_bs) { | |
503 | *ptr = rand() * 0x9e370001; | |
504 | ptr++; | |
505 | } | |
506 | } | |
507 | ||
ebac4655 JA |
508 | static int init_io_u(struct thread_data *td) |
509 | { | |
510 | struct io_u *io_u; | |
a00735e6 | 511 | unsigned int max_bs; |
ebac4655 JA |
512 | int i, max_units; |
513 | char *p; | |
514 | ||
2866c82d | 515 | if (td->io_ops->flags & FIO_CPUIO) |
b990b5c0 JA |
516 | return 0; |
517 | ||
2866c82d | 518 | if (td->io_ops->flags & FIO_SYNCIO) |
ebac4655 JA |
519 | max_units = 1; |
520 | else | |
521 | max_units = td->iodepth; | |
522 | ||
a00735e6 | 523 | max_bs = max(td->max_bs[DDIR_READ], td->max_bs[DDIR_WRITE]); |
74b025b0 JA |
524 | td->orig_buffer_size = max_bs * max_units; |
525 | ||
d0bdaf49 | 526 | if (td->mem_type == MEM_SHMHUGE || td->mem_type == MEM_MMAPHUGE) |
56bb17f2 | 527 | td->orig_buffer_size = (td->orig_buffer_size + td->hugepage_size - 1) & ~(td->hugepage_size - 1); |
74b025b0 JA |
528 | else |
529 | td->orig_buffer_size += MASK; | |
ebac4655 | 530 | |
2f9ade3c JA |
531 | if (allocate_io_mem(td)) |
532 | return 1; | |
ebac4655 | 533 | |
ebac4655 JA |
534 | p = ALIGN(td->orig_buffer); |
535 | for (i = 0; i < max_units; i++) { | |
536 | io_u = malloc(sizeof(*io_u)); | |
537 | memset(io_u, 0, sizeof(*io_u)); | |
538 | INIT_LIST_HEAD(&io_u->list); | |
539 | ||
a00735e6 | 540 | io_u->buf = p + max_bs * i; |
6b9cea23 | 541 | if (td_write(td) || td_rw(td)) |
a00735e6 | 542 | fill_rand_buf(io_u, max_bs); |
6b9cea23 | 543 | |
b1ff3403 | 544 | io_u->index = i; |
ebac4655 JA |
545 | list_add(&io_u->list, &td->io_u_freelist); |
546 | } | |
547 | ||
548 | return 0; | |
549 | } | |
550 | ||
da86774e JA |
551 | static int switch_ioscheduler(struct thread_data *td) |
552 | { | |
553 | char tmp[256], tmp2[128]; | |
554 | FILE *f; | |
555 | int ret; | |
556 | ||
f48b467c JA |
557 | if (td->io_ops->flags & FIO_CPUIO) |
558 | return 0; | |
559 | ||
da86774e JA |
560 | sprintf(tmp, "%s/queue/scheduler", td->sysfs_root); |
561 | ||
562 | f = fopen(tmp, "r+"); | |
563 | if (!f) { | |
564 | td_verror(td, errno); | |
565 | return 1; | |
566 | } | |
567 | ||
568 | /* | |
569 | * Set io scheduler. | |
570 | */ | |
571 | ret = fwrite(td->ioscheduler, strlen(td->ioscheduler), 1, f); | |
572 | if (ferror(f) || ret != 1) { | |
573 | td_verror(td, errno); | |
574 | fclose(f); | |
575 | return 1; | |
576 | } | |
577 | ||
578 | rewind(f); | |
579 | ||
580 | /* | |
581 | * Read back and check that the selected scheduler is now the default. | |
582 | */ | |
583 | ret = fread(tmp, 1, sizeof(tmp), f); | |
584 | if (ferror(f) || ret < 0) { | |
585 | td_verror(td, errno); | |
586 | fclose(f); | |
587 | return 1; | |
588 | } | |
589 | ||
590 | sprintf(tmp2, "[%s]", td->ioscheduler); | |
591 | if (!strstr(tmp, tmp2)) { | |
3b70d7e5 | 592 | log_err("fio: io scheduler %s not found\n", td->ioscheduler); |
da86774e JA |
593 | td_verror(td, EINVAL); |
594 | fclose(f); | |
595 | return 1; | |
596 | } | |
597 | ||
598 | fclose(f); | |
599 | return 0; | |
600 | } | |
601 | ||
ebac4655 JA |
602 | static void clear_io_state(struct thread_data *td) |
603 | { | |
53cdc686 JA |
604 | struct fio_file *f; |
605 | int i; | |
ebac4655 | 606 | |
ebac4655 JA |
607 | td->stat_io_bytes[0] = td->stat_io_bytes[1] = 0; |
608 | td->this_io_bytes[0] = td->this_io_bytes[1] = 0; | |
20dc95c4 | 609 | td->zone_bytes = 0; |
ebac4655 | 610 | |
53cdc686 JA |
611 | for_each_file(td, f, i) { |
612 | f->last_pos = 0; | |
613 | if (td->io_ops->flags & FIO_SYNCIO) | |
614 | lseek(f->fd, SEEK_SET, 0); | |
615 | ||
616 | if (f->file_map) | |
617 | memset(f->file_map, 0, f->num_maps * sizeof(long)); | |
618 | } | |
ebac4655 JA |
619 | } |
620 | ||
906c8d75 JA |
621 | /* |
622 | * Entry point for the thread based jobs. The process based jobs end up | |
623 | * here as well, after a little setup. | |
624 | */ | |
ebac4655 JA |
625 | static void *thread_main(void *data) |
626 | { | |
69008999 | 627 | unsigned long long runtime[2]; |
ebac4655 | 628 | struct thread_data *td = data; |
ebac4655 JA |
629 | |
630 | if (!td->use_thread) | |
631 | setsid(); | |
632 | ||
633 | td->pid = getpid(); | |
634 | ||
aea47d44 JA |
635 | INIT_LIST_HEAD(&td->io_u_freelist); |
636 | INIT_LIST_HEAD(&td->io_u_busylist); | |
637 | INIT_LIST_HEAD(&td->io_hist_list); | |
638 | INIT_LIST_HEAD(&td->io_log_list); | |
639 | ||
ebac4655 JA |
640 | if (init_io_u(td)) |
641 | goto err; | |
642 | ||
643 | if (fio_setaffinity(td) == -1) { | |
644 | td_verror(td, errno); | |
645 | goto err; | |
646 | } | |
647 | ||
45bee283 | 648 | if (td_io_init(td)) |
ebac4655 JA |
649 | goto err; |
650 | ||
aea47d44 JA |
651 | if (init_iolog(td)) |
652 | goto err; | |
653 | ||
ebac4655 JA |
654 | if (td->ioprio) { |
655 | if (ioprio_set(IOPRIO_WHO_PROCESS, 0, td->ioprio) == -1) { | |
656 | td_verror(td, errno); | |
657 | goto err; | |
658 | } | |
659 | } | |
660 | ||
1056eaad | 661 | if (nice(td->nice) == -1) { |
b6f4d880 JA |
662 | td_verror(td, errno); |
663 | goto err; | |
664 | } | |
665 | ||
75154845 JA |
666 | if (init_random_state(td)) |
667 | goto err; | |
668 | ||
56f9498d JA |
669 | if (td->ioscheduler && switch_ioscheduler(td)) |
670 | goto err; | |
da86774e | 671 | |
75154845 | 672 | td_set_runstate(td, TD_INITIALIZED); |
bbfd6b00 JA |
673 | fio_sem_up(&startup_sem); |
674 | fio_sem_down(&td->mutex); | |
ebac4655 | 675 | |
53cdc686 | 676 | if (!td->create_serialize && setup_files(td)) |
ebac4655 | 677 | goto err; |
21972cde JA |
678 | if (open_files(td)) |
679 | goto err; | |
ebac4655 | 680 | |
56f9498d | 681 | if (td->exec_prerun) |
4e0ba8af JA |
682 | system(td->exec_prerun); |
683 | ||
69008999 | 684 | fio_gettime(&td->epoch, NULL); |
36dff966 | 685 | getrusage(RUSAGE_SELF, &td->ru_start); |
69008999 JA |
686 | |
687 | runtime[0] = runtime[1] = 0; | |
ebac4655 | 688 | while (td->loops--) { |
02bcaa8c | 689 | fio_gettime(&td->start, NULL); |
ebac4655 JA |
690 | memcpy(&td->stat_sample_time, &td->start, sizeof(td->start)); |
691 | ||
692 | if (td->ratemin) | |
693 | memcpy(&td->lastrate, &td->stat_sample_time, sizeof(td->lastrate)); | |
694 | ||
695 | clear_io_state(td); | |
696 | prune_io_piece_log(td); | |
697 | ||
2866c82d | 698 | if (td->io_ops->flags & FIO_CPUIO) |
b990b5c0 JA |
699 | do_cpuio(td); |
700 | else | |
701 | do_io(td); | |
ebac4655 | 702 | |
69008999 | 703 | runtime[td->ddir] += utime_since_now(&td->start); |
aea47d44 | 704 | if (td_rw(td) && td->io_bytes[td->ddir ^ 1]) |
69008999 | 705 | runtime[td->ddir ^ 1] = runtime[td->ddir]; |
3d60d1ed | 706 | |
ebac4655 JA |
707 | if (td->error || td->terminate) |
708 | break; | |
709 | ||
710 | if (td->verify == VERIFY_NONE) | |
711 | continue; | |
712 | ||
713 | clear_io_state(td); | |
02bcaa8c | 714 | fio_gettime(&td->start, NULL); |
ebac4655 JA |
715 | |
716 | do_verify(td); | |
717 | ||
69008999 | 718 | runtime[DDIR_READ] += utime_since_now(&td->start); |
ebac4655 JA |
719 | |
720 | if (td->error || td->terminate) | |
721 | break; | |
722 | } | |
723 | ||
36dff966 | 724 | update_rusage_stat(td); |
69008999 JA |
725 | fio_gettime(&td->end_time, NULL); |
726 | td->runtime[0] = runtime[0] / 1000; | |
727 | td->runtime[1] = runtime[1] / 1000; | |
728 | ||
ebac4655 JA |
729 | if (td->bw_log) |
730 | finish_log(td, td->bw_log, "bw"); | |
731 | if (td->slat_log) | |
732 | finish_log(td, td->slat_log, "slat"); | |
733 | if (td->clat_log) | |
734 | finish_log(td, td->clat_log, "clat"); | |
076efc7c | 735 | if (td->write_iolog_file) |
843a7413 | 736 | write_iolog_close(td); |
56f9498d | 737 | if (td->exec_postrun) |
4e0ba8af | 738 | system(td->exec_postrun); |
ebac4655 JA |
739 | |
740 | if (exitall_on_terminate) | |
6ce15a32 | 741 | terminate_threads(td->groupid, 0); |
ebac4655 JA |
742 | |
743 | err: | |
53cdc686 | 744 | close_files(td); |
2866c82d | 745 | close_ioengine(td); |
ebac4655 | 746 | cleanup_io_u(td); |
ebac4655 JA |
747 | td_set_runstate(td, TD_EXITED); |
748 | return NULL; | |
749 | ||
750 | } | |
751 | ||
906c8d75 JA |
752 | /* |
753 | * We cannot pass the td data into a forked process, so attach the td and | |
754 | * pass it to the thread worker. | |
755 | */ | |
ebac4655 JA |
756 | static void *fork_main(int shmid, int offset) |
757 | { | |
758 | struct thread_data *td; | |
759 | void *data; | |
760 | ||
761 | data = shmat(shmid, NULL, 0); | |
762 | if (data == (void *) -1) { | |
763 | perror("shmat"); | |
764 | return NULL; | |
765 | } | |
766 | ||
767 | td = data + offset * sizeof(struct thread_data); | |
768 | thread_main(td); | |
769 | shmdt(data); | |
770 | return NULL; | |
771 | } | |
772 | ||
906c8d75 JA |
773 | /* |
774 | * Run over the job map and reap the threads that have exited, if any. | |
775 | */ | |
ebac4655 JA |
776 | static void reap_threads(int *nr_running, int *t_rate, int *m_rate) |
777 | { | |
34572e28 | 778 | struct thread_data *td; |
4d2413c6 | 779 | int i, cputhreads, pending; |
ebac4655 JA |
780 | |
781 | /* | |
782 | * reap exited threads (TD_EXITED -> TD_REAPED) | |
783 | */ | |
4d2413c6 | 784 | pending = cputhreads = 0; |
34572e28 | 785 | for_each_td(td, i) { |
84585003 JA |
786 | /* |
787 | * ->io_ops is NULL for a thread that has closed its | |
788 | * io engine | |
789 | */ | |
790 | if (td->io_ops && td->io_ops->flags & FIO_CPUIO) | |
b990b5c0 JA |
791 | cputhreads++; |
792 | ||
4d2413c6 JA |
793 | if (td->runstate != TD_EXITED) { |
794 | if (td->runstate < TD_RUNNING) | |
795 | pending++; | |
796 | ||
ebac4655 | 797 | continue; |
4d2413c6 | 798 | } |
ebac4655 JA |
799 | |
800 | td_set_runstate(td, TD_REAPED); | |
801 | ||
802 | if (td->use_thread) { | |
803 | long ret; | |
804 | ||
805 | if (pthread_join(td->thread, (void *) &ret)) | |
806 | perror("thread_join"); | |
807 | } else | |
808 | waitpid(td->pid, NULL, 0); | |
809 | ||
810 | (*nr_running)--; | |
811 | (*m_rate) -= td->ratemin; | |
812 | (*t_rate) -= td->rate; | |
813 | } | |
b990b5c0 | 814 | |
4d2413c6 | 815 | if (*nr_running == cputhreads && !pending) |
6ce15a32 | 816 | terminate_threads(TERMINATE_ALL, 0); |
ebac4655 JA |
817 | } |
818 | ||
906c8d75 JA |
819 | /* |
820 | * Main function for kicking off and reaping jobs, as needed. | |
821 | */ | |
ebac4655 JA |
822 | static void run_threads(void) |
823 | { | |
ebac4655 JA |
824 | struct thread_data *td; |
825 | unsigned long spent; | |
826 | int i, todo, nr_running, m_rate, t_rate, nr_started; | |
fcb6ade2 | 827 | |
2f9ade3c JA |
828 | if (fio_pin_memory()) |
829 | return; | |
ebac4655 | 830 | |
c6ae0a5b JA |
831 | if (!terse_output) { |
832 | printf("Starting %d thread%s\n", thread_number, thread_number > 1 ? "s" : ""); | |
833 | fflush(stdout); | |
834 | } | |
c04f7ec3 | 835 | |
4efa970e JA |
836 | signal(SIGINT, sig_handler); |
837 | signal(SIGALRM, sig_handler); | |
6ce15a32 | 838 | signal(SIGSEGV, sig_handler); |
4efa970e | 839 | |
ebac4655 JA |
840 | todo = thread_number; |
841 | nr_running = 0; | |
842 | nr_started = 0; | |
843 | m_rate = t_rate = 0; | |
844 | ||
34572e28 | 845 | for_each_td(td, i) { |
263e529f | 846 | print_status_init(td->thread_number - 1); |
ebac4655 | 847 | |
380cf265 JA |
848 | if (!td->create_serialize) { |
849 | init_disk_util(td); | |
ebac4655 | 850 | continue; |
380cf265 | 851 | } |
ebac4655 JA |
852 | |
853 | /* | |
854 | * do file setup here so it happens sequentially, | |
855 | * we don't want X number of threads getting their | |
856 | * client data interspersed on disk | |
857 | */ | |
53cdc686 | 858 | if (setup_files(td)) { |
ebac4655 JA |
859 | td_set_runstate(td, TD_REAPED); |
860 | todo--; | |
861 | } | |
380cf265 JA |
862 | |
863 | init_disk_util(td); | |
ebac4655 JA |
864 | } |
865 | ||
ebac4655 | 866 | while (todo) { |
75154845 JA |
867 | struct thread_data *map[MAX_JOBS]; |
868 | struct timeval this_start; | |
869 | int this_jobs = 0, left; | |
870 | ||
ebac4655 JA |
871 | /* |
872 | * create threads (TD_NOT_CREATED -> TD_CREATED) | |
873 | */ | |
34572e28 | 874 | for_each_td(td, i) { |
ebac4655 JA |
875 | if (td->runstate != TD_NOT_CREATED) |
876 | continue; | |
877 | ||
878 | /* | |
879 | * never got a chance to start, killed by other | |
880 | * thread for some reason | |
881 | */ | |
882 | if (td->terminate) { | |
883 | todo--; | |
884 | continue; | |
885 | } | |
886 | ||
887 | if (td->start_delay) { | |
263e529f | 888 | spent = mtime_since_genesis(); |
ebac4655 JA |
889 | |
890 | if (td->start_delay * 1000 > spent) | |
891 | continue; | |
892 | } | |
893 | ||
894 | if (td->stonewall && (nr_started || nr_running)) | |
895 | break; | |
896 | ||
75154845 JA |
897 | /* |
898 | * Set state to created. Thread will transition | |
899 | * to TD_INITIALIZED when it's done setting up. | |
900 | */ | |
ebac4655 | 901 | td_set_runstate(td, TD_CREATED); |
75154845 | 902 | map[this_jobs++] = td; |
bbfd6b00 | 903 | fio_sem_init(&startup_sem, 1); |
ebac4655 JA |
904 | nr_started++; |
905 | ||
906 | if (td->use_thread) { | |
907 | if (pthread_create(&td->thread, NULL, thread_main, td)) { | |
908 | perror("thread_create"); | |
909 | nr_started--; | |
910 | } | |
911 | } else { | |
912 | if (fork()) | |
bbfd6b00 | 913 | fio_sem_down(&startup_sem); |
ebac4655 JA |
914 | else { |
915 | fork_main(shm_id, i); | |
916 | exit(0); | |
917 | } | |
918 | } | |
919 | } | |
920 | ||
921 | /* | |
75154845 JA |
922 | * Wait for the started threads to transition to |
923 | * TD_INITIALIZED. | |
ebac4655 | 924 | */ |
02bcaa8c | 925 | fio_gettime(&this_start, NULL); |
75154845 | 926 | left = this_jobs; |
6ce15a32 | 927 | while (left && !fio_abort) { |
75154845 JA |
928 | if (mtime_since_now(&this_start) > JOB_START_TIMEOUT) |
929 | break; | |
930 | ||
931 | usleep(100000); | |
932 | ||
933 | for (i = 0; i < this_jobs; i++) { | |
934 | td = map[i]; | |
935 | if (!td) | |
936 | continue; | |
b6f4d880 | 937 | if (td->runstate == TD_INITIALIZED) { |
75154845 JA |
938 | map[i] = NULL; |
939 | left--; | |
b6f4d880 JA |
940 | } else if (td->runstate >= TD_EXITED) { |
941 | map[i] = NULL; | |
942 | left--; | |
943 | todo--; | |
944 | nr_running++; /* work-around... */ | |
75154845 JA |
945 | } |
946 | } | |
947 | } | |
948 | ||
949 | if (left) { | |
3b70d7e5 | 950 | log_err("fio: %d jobs failed to start\n", left); |
75154845 JA |
951 | for (i = 0; i < this_jobs; i++) { |
952 | td = map[i]; | |
953 | if (!td) | |
954 | continue; | |
955 | kill(td->pid, SIGTERM); | |
956 | } | |
957 | break; | |
958 | } | |
959 | ||
960 | /* | |
b6f4d880 | 961 | * start created threads (TD_INITIALIZED -> TD_RUNNING). |
75154845 | 962 | */ |
34572e28 | 963 | for_each_td(td, i) { |
75154845 | 964 | if (td->runstate != TD_INITIALIZED) |
ebac4655 JA |
965 | continue; |
966 | ||
967 | td_set_runstate(td, TD_RUNNING); | |
968 | nr_running++; | |
969 | nr_started--; | |
970 | m_rate += td->ratemin; | |
971 | t_rate += td->rate; | |
75154845 | 972 | todo--; |
bbfd6b00 | 973 | fio_sem_up(&td->mutex); |
ebac4655 JA |
974 | } |
975 | ||
976 | reap_threads(&nr_running, &t_rate, &m_rate); | |
977 | ||
978 | if (todo) | |
979 | usleep(100000); | |
980 | } | |
981 | ||
982 | while (nr_running) { | |
983 | reap_threads(&nr_running, &t_rate, &m_rate); | |
984 | usleep(10000); | |
985 | } | |
986 | ||
987 | update_io_ticks(); | |
2f9ade3c | 988 | fio_unpin_memory(); |
ebac4655 JA |
989 | } |
990 | ||
ebac4655 JA |
991 | int main(int argc, char *argv[]) |
992 | { | |
993 | if (parse_options(argc, argv)) | |
994 | return 1; | |
995 | ||
996 | if (!thread_number) { | |
3b70d7e5 | 997 | log_err("Nothing to do\n"); |
ebac4655 JA |
998 | return 1; |
999 | } | |
1000 | ||
1001 | disk_util_timer_arm(); | |
1002 | ||
1003 | run_threads(); | |
6ce15a32 JA |
1004 | |
1005 | if (!fio_abort) | |
1006 | show_run_stats(); | |
ebac4655 JA |
1007 | |
1008 | return 0; | |
1009 | } |