projects / fio.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
[PATCH] Warning on hugepage-size setting in HOWTO
[fio.git] / init.c
CommitLineData
906c8d75 1/*
cb2c86fd 2 * This file contains job initialization and setup functions.
906c8d75 3 */
ebac4655
JA		 4#include <stdio.h>
5#include <stdlib.h>
6#include <unistd.h>
7#include <fcntl.h>
8#include <ctype.h>
9#include <string.h>
10#include <errno.h>
b4692828
JA		 11#include <getopt.h>
12#include <assert.h>
ebac4655
JA		 13#include <sys/ipc.h>
14#include <sys/shm.h>
15#include <sys/types.h>
16#include <sys/stat.h>
17
18#include "fio.h"
cb2c86fd 19#include "parse.h"
ebac4655 20
906c8d75
JA		 21/*
22 * The default options
23 */
20dc95c4
JA		 24#define DEF_BS (4096)
25#define DEF_TIMEOUT (0)
26#define DEF_RATE_CYCLE (1000)
27#define DEF_ODIRECT (1)
28#define DEF_IO_ENGINE (FIO_SYNCIO)
ebac4655 29#define DEF_IO_ENGINE_NAME "sync"
20dc95c4
JA		 30#define DEF_SEQUENTIAL (1)
31#define DEF_RAND_REPEAT (1)
178d11f2 32#define DEF_OVERWRITE (0)
20dc95c4
JA		 33#define DEF_INVALIDATE (1)
34#define DEF_SYNCIO (0)
35#define DEF_RANDSEED (0xb1899bedUL)
36#define DEF_BWAVGTIME (500)
37#define DEF_CREATE_SER (1)
ebac4655 38#define DEF_CREATE_FSYNC (1)
20dc95c4
JA		 39#define DEF_LOOPS (1)
40#define DEF_VERIFY (0)
41#define DEF_STONEWALL (0)
42#define DEF_NUMJOBS (1)
43#define DEF_USE_THREAD (0)
44#define DEF_FILE_SIZE (1024 * 1024 * 1024UL)
45#define DEF_ZONE_SIZE (0)
46#define DEF_ZONE_SKIP (0)
a6ccc7be
JA		 47#define DEF_RWMIX_CYCLE (500)
48#define DEF_RWMIX_READ (50)
b6f4d880 49#define DEF_NICE (0)
53cdc686 50#define DEF_NR_FILES (1)
178d11f2 51#define DEF_UNLINK (1)
ec94ec56
JA		 52#define DEF_WRITE_BW_LOG (0)
53#define DEF_WRITE_LAT_LOG (0)
bb8895e0 54#define DEF_NO_RAND_MAP (0)
56bb17f2 55#define DEF_HUGEPAGE_SIZE FIO_HUGE_PAGE
ebac4655 56
e1f36503
JA		 57#define td_var_offset(var) ((size_t) &((struct thread_data *)0)->var)
58
b4692828
JA		 59static int str_rw_cb(void *, const char *);
60static int str_ioengine_cb(void *, const char *);
61static int str_mem_cb(void *, const char *);
62static int str_verify_cb(void *, const char *);
e1f36503 63static int str_lockmem_cb(void *, unsigned long *);
34cfcdaf 64#ifdef FIO_HAVE_IOPRIO
e1f36503
JA		 65static int str_prio_cb(void *, unsigned int *);
66static int str_prioclass_cb(void *, unsigned int *);
34cfcdaf 67#endif
e1f36503
JA		 68static int str_exitall_cb(void);
69static int str_cpumask_cb(void *, unsigned int *);
70
71/*
72 * Map of job/command line options
73 */
74static struct fio_option options[] = {
75 {
76 .name = "name",
77 .type = FIO_OPT_STR_STORE,
78 .off1 = td_var_offset(name),
79 },
80 {
81 .name = "directory",
82 .type = FIO_OPT_STR_STORE,
83 .off1 = td_var_offset(directory),
84 },
85 {
86 .name = "filename",
87 .type = FIO_OPT_STR_STORE,
88 .off1 = td_var_offset(filename),
89 },
90 {
91 .name = "rw",
92 .type = FIO_OPT_STR,
93 .cb = str_rw_cb,
94 },
95 {
96 .name = "ioengine",
97 .type = FIO_OPT_STR,
98 .cb = str_ioengine_cb,
99 },
100 {
101 .name = "mem",
102 .type = FIO_OPT_STR,
103 .cb = str_mem_cb,
104 },
105 {
106 .name = "verify",
107 .type = FIO_OPT_STR,
108 .cb = str_verify_cb,
109 },
110 {
111 .name = "write_iolog",
076efc7c
JA		 112 .type = FIO_OPT_STR_STORE,
113 .off1 = td_var_offset(write_iolog_file),
e1f36503
JA		 114 },
115 {
076efc7c 116 .name = "read_iolog",
e1f36503 117 .type = FIO_OPT_STR_STORE,
076efc7c 118 .off1 = td_var_offset(read_iolog_file),
e1f36503
JA		 119 },
120 {
121 .name = "exec_prerun",
122 .type = FIO_OPT_STR_STORE,
123 .off1 = td_var_offset(exec_prerun),
124 },
125 {
126 .name = "exec_postrun",
127 .type = FIO_OPT_STR_STORE,
128 .off1 = td_var_offset(exec_postrun),
129 },
130#ifdef FIO_HAVE_IOSCHED_SWITCH
131 {
132 .name = "ioscheduler",
133 .type = FIO_OPT_STR_STORE,
134 .off1 = td_var_offset(ioscheduler),
135 },
136#endif
137 {
138 .name = "size",
139 .type = FIO_OPT_STR_VAL,
140 .off1 = td_var_offset(total_file_size),
141 },
142 {
143 .name = "bs",
75e6f36f 144 .type = FIO_OPT_STR_VAL_INT,
a00735e6 145 .off1 = td_var_offset(bs[DDIR_READ]),
f90eff5a 146 .off2 = td_var_offset(bs[DDIR_WRITE]),
e1f36503
JA		 147 },
148 {
149 .name = "offset",
150 .type = FIO_OPT_STR_VAL,
151 .off1 = td_var_offset(start_offset),
152 },
153 {
154 .name = "zonesize",
155 .type = FIO_OPT_STR_VAL,
156 .off1 = td_var_offset(zone_size),
157 },
158 {
159 .name = "zoneskip",
160 .type = FIO_OPT_STR_VAL,
161 .off1 = td_var_offset(zone_skip),
162 },
163 {
164 .name = "lockmem",
165 .type = FIO_OPT_STR_VAL,
166 .cb = str_lockmem_cb,
167 },
168 {
169 .name = "bsrange",
170 .type = FIO_OPT_RANGE,
a00735e6
JA		 171 .off1 = td_var_offset(min_bs[DDIR_READ]),
172 .off2 = td_var_offset(max_bs[DDIR_READ]),
f90eff5a
JA		 173 .off3 = td_var_offset(min_bs[DDIR_WRITE]),
174 .off4 = td_var_offset(max_bs[DDIR_WRITE]),
e1f36503
JA		 175 },
176 {
177 .name = "nrfiles",
178 .type = FIO_OPT_INT,
179 .off1 = td_var_offset(nr_files),
180 },
181 {
182 .name = "iodepth",
183 .type = FIO_OPT_INT,
184 .off1 = td_var_offset(iodepth),
185 },
186 {
187 .name = "fsync",
188 .type = FIO_OPT_INT,
189 .off1 = td_var_offset(fsync_blocks),
190 },
191 {
192 .name = "rwmixcycle",
193 .type = FIO_OPT_INT,
194 .off1 = td_var_offset(rwmixcycle),
195 },
196 {
197 .name = "rwmixread",
198 .type = FIO_OPT_INT,
199 .off1 = td_var_offset(rwmixread),
200 .max_val= 100,
201 },
202 {
203 .name = "rwmixwrite",
204 .type = FIO_OPT_INT,
205 .off1 = td_var_offset(rwmixwrite),
206 .max_val= 100,
207 },
208 {
209 .name = "nice",
210 .type = FIO_OPT_INT,
211 .off1 = td_var_offset(nice),
212 },
213#ifdef FIO_HAVE_IOPRIO
214 {
215 .name = "prio",
216 .type = FIO_OPT_INT,
217 .cb = str_prio_cb,
218 },
219 {
220 .name = "prioclass",
221 .type = FIO_OPT_INT,
222 .cb = str_prioclass_cb,
223 },
224#endif
225 {
226 .name = "thinktime",
227 .type = FIO_OPT_INT,
228 .off1 = td_var_offset(thinktime)
229 },
230 {
231 .name = "rate",
232 .type = FIO_OPT_INT,
233 .off1 = td_var_offset(rate)
234 },
235 {
236 .name = "ratemin",
237 .type = FIO_OPT_INT,
238 .off1 = td_var_offset(ratemin)
239 },
240 {
241 .name = "ratecycle",
242 .type = FIO_OPT_INT,
243 .off1 = td_var_offset(ratecycle)
244 },
245 {
246 .name = "startdelay",
247 .type = FIO_OPT_INT,
248 .off1 = td_var_offset(start_delay)
249 },
250 {
251 .name = "timeout",
252 .type = FIO_OPT_STR_VAL_TIME,
253 .off1 = td_var_offset(timeout)
254 },
255 {
256 .name = "invalidate",
257 .type = FIO_OPT_INT,
258 .off1 = td_var_offset(invalidate_cache)
259 },
260 {
261 .name = "sync",
262 .type = FIO_OPT_INT,
263 .off1 = td_var_offset(sync_io)
264 },
265 {
266 .name = "bwavgtime",
267 .type = FIO_OPT_INT,
268 .off1 = td_var_offset(bw_avg_time)
269 },
270 {
271 .name = "create_serialize",
272 .type = FIO_OPT_INT,
273 .off1 = td_var_offset(create_serialize)
274 },
275 {
276 .name = "create_fsync",
277 .type = FIO_OPT_INT,
278 .off1 = td_var_offset(create_fsync)
279 },
280 {
281 .name = "loops",
282 .type = FIO_OPT_INT,
283 .off1 = td_var_offset(loops)
284 },
285 {
286 .name = "numjobs",
287 .type = FIO_OPT_INT,
288 .off1 = td_var_offset(numjobs)
289 },
290 {
291 .name = "cpuload",
292 .type = FIO_OPT_INT,
293 .off1 = td_var_offset(cpuload)
294 },
295 {
296 .name = "cpuchunks",
297 .type = FIO_OPT_INT,
298 .off1 = td_var_offset(cpucycle)
299 },
300 {
301 .name = "direct",
302 .type = FIO_OPT_INT,
303 .off1 = td_var_offset(odirect)
304 },
305 {
306 .name = "overwrite",
307 .type = FIO_OPT_INT,
308 .off1 = td_var_offset(overwrite)
309 },
310#ifdef FIO_HAVE_CPU_AFFINITY
311 {
312 .name = "cpumask",
313 .type = FIO_OPT_INT,
314 .cb = str_cpumask_cb,
315 },
316#endif
317 {
318 .name = "end_fsync",
319 .type = FIO_OPT_INT,
320 .off1 = td_var_offset(end_fsync)
321 },
322 {
323 .name = "unlink",
324 .type = FIO_OPT_STR_SET,
325 .off1 = td_var_offset(unlink),
326 },
327 {
328 .name = "exitall",
329 .type = FIO_OPT_STR_SET,
330 .cb = str_exitall_cb,
331 },
332 {
333 .name = "stonewall",
334 .type = FIO_OPT_STR_SET,
335 .off1 = td_var_offset(stonewall),
336 },
337 {
338 .name = "thread",
339 .type = FIO_OPT_STR_SET,
340 .off1 = td_var_offset(thread),
341 },
342 {
343 .name = "write_bw_log",
344 .type = FIO_OPT_STR_SET,
345 .off1 = td_var_offset(write_bw_log),
346 },
347 {
348 .name = "write_lat_log",
349 .type = FIO_OPT_STR_SET,
350 .off1 = td_var_offset(write_lat_log),
351 },
bb8895e0
JA		 352 {
353 .name = "norandommap",
354 .type = FIO_OPT_STR_SET,
355 .off1 = td_var_offset(norandommap),
356 },
690adba3
JA		 357 {
358 .name = "bs_unaligned",
359 .type = FIO_OPT_STR_SET,
360 .off1 = td_var_offset(bs_unaligned),
361 },
56bb17f2
JA		 362 {
363 .name = "hugepage-size",
364 .type = FIO_OPT_STR_VAL,
365 .off1 = td_var_offset(hugepage_size),
366 },
e1f36503
JA		 367 {
368 .name = NULL,
369 },
370};
371
b4692828
JA		 372#define FIO_JOB_OPTS (sizeof(options) / sizeof(struct fio_option))
373#define FIO_CMD_OPTS (16)
374#define FIO_GETOPT_JOB (0x89988998)
375
376/*
377 * Command line options. These will contain the above, plus a few
378 * extra that only pertain to fio itself and not jobs.
379 */
380static struct option long_options[FIO_JOB_OPTS + FIO_CMD_OPTS] = {
381 {
382 .name = "output",
383 .has_arg = required_argument,
384 .val = 'o',
385 },
386 {
387 .name = "timeout",
388 .has_arg = required_argument,
389 .val = 't',
390 },
391 {
392 .name = "latency-log",
393 .has_arg = required_argument,
394 .val = 'l',
395 },
396 {
397 .name = "bandwidth-log",
398 .has_arg = required_argument,
399 .val = 'b',
400 },
401 {
402 .name = "minimal",
403 .has_arg = optional_argument,
404 .val = 'm',
405 },
406 {
407 .name = "version",
408 .has_arg = no_argument,
409 .val = 'v',
410 },
411 {
412 .name = NULL,
413 },
414};
415
972cfd25 416static int def_timeout = DEF_TIMEOUT;
972cfd25 417
be67e2de 418static char fio_version_string[] = "fio 1.9";
ebac4655 419
972cfd25 420static char **ini_file;
ebac4655
JA		 421static int max_jobs = MAX_JOBS;
422
423struct thread_data def_thread;
424struct thread_data *threads = NULL;
425
ebac4655 426int exitall_on_terminate = 0;
c6ae0a5b 427int terse_output = 0;
c04f7ec3 428unsigned long long mlock_size = 0;
eb8bbf48
JA		 429FILE *f_out = NULL;
430FILE *f_err = NULL;
ebac4655 431
ec94ec56
JA		 432static int write_lat_log = DEF_WRITE_LAT_LOG;
433static int write_bw_log = DEF_WRITE_BW_LOG;
434
906c8d75
JA		 435/*
436 * Return a free job structure.
437 */
ebac4655
JA		 438static struct thread_data *get_new_job(int global, struct thread_data *parent)
439{
440 struct thread_data *td;
441
442 if (global)
443 return &def_thread;
444 if (thread_number >= max_jobs)
445 return NULL;
446
447 td = &threads[thread_number++];
ddaeaa5a 448 *td = *parent;
ebac4655 449
ebac4655 450 td->thread_number = thread_number;
ebac4655
JA		 451 return td;
452}
453
454static void put_job(struct thread_data *td)
455{
549577a7
JA		 456 if (td == &def_thread)
457 return;
458
ebac4655
JA		 459 memset(&threads[td->thread_number - 1], 0, sizeof(*td));
460 thread_number--;
461}
462
dad915e3
JA		 463/*
464 * Lazy way of fixing up options that depend on each other. We could also
465 * define option callback handlers, but this is easier.
466 */
e1f36503
JA		 467static void fixup_options(struct thread_data *td)
468{
e1f36503
JA		 469 if (!td->rwmixread && td->rwmixwrite)
470 td->rwmixread = 100 - td->rwmixwrite;
dad915e3 471
076efc7c
JA		 472 if (td->write_iolog_file && td->read_iolog_file) {
473 log_err("fio: read iolog overrides write_iolog\n");
474 free(td->write_iolog_file);
475 td->write_iolog_file = NULL;
476 }
16b462ae
JA		 477
478 if (td->io_ops->flags & FIO_SYNCIO)
479 td->iodepth = 1;
480 else {
481 if (!td->iodepth)
482 td->iodepth = td->nr_files;
483 }
484
485 /*
486 * only really works for sequential io for now, and with 1 file
487 */
488 if (td->zone_size && !td->sequential && td->nr_files == 1)
489 td->zone_size = 0;
490
491 /*
492 * Reads can do overwrites, we always need to pre-create the file
493 */
494 if (td_read(td) || td_rw(td))
495 td->overwrite = 1;
496
a00735e6
JA		 497 if (!td->min_bs[DDIR_READ])
498 td->min_bs[DDIR_READ]= td->bs[DDIR_READ];
499 if (!td->max_bs[DDIR_READ])
500 td->max_bs[DDIR_READ] = td->bs[DDIR_READ];
501 if (!td->min_bs[DDIR_WRITE])
75e6f36f 502 td->min_bs[DDIR_WRITE]= td->bs[DDIR_WRITE];
a00735e6 503 if (!td->max_bs[DDIR_WRITE])
75e6f36f 504 td->max_bs[DDIR_WRITE] = td->bs[DDIR_WRITE];
a00735e6
JA		 505
506 td->rw_min_bs = min(td->min_bs[DDIR_READ], td->min_bs[DDIR_WRITE]);
507
16b462ae
JA		 508 if (td_read(td) && !td_rw(td))
509 td->verify = 0;
bb8895e0
JA		 510
511 if (td->norandommap && td->verify != VERIFY_NONE) {
512 log_err("fio: norandommap given, verify disabled\n");
513 td->verify = VERIFY_NONE;
514 }
690adba3
JA		 515 if (td->bs_unaligned && (td->odirect || td->io_ops->flags & FIO_RAWIO))
516 log_err("fio: bs_unaligned may not work with raw io\n");
e0a22335
JA		 517
518 /*
519 * O_DIRECT and char doesn't mix, clear that flag if necessary.
520 */
521 if (td->filetype == FIO_TYPE_CHAR && td->odirect)
522 td->odirect = 0;
e1f36503
JA		 523}
524
f8977ee6
JA		 525/*
526 * This function leaks the buffer
527 */
528static char *to_kmg(unsigned int val)
529{
530 char *buf = malloc(32);
245142ff 531 char post[] = { 0, 'K', 'M', 'G', 'P', 0 };
f8977ee6
JA		 532 char *p = post;
533
245142ff 534 do {
f8977ee6
JA		 535 if (val & 1023)
536 break;
537
538 val >>= 10;
539 p++;
245142ff 540 } while (*p);
f8977ee6
JA		 541
542 snprintf(buf, 31, "%u%c", val, *p);
543 return buf;
544}
545
906c8d75
JA		 546/*
547 * Adds a job to the list of things todo. Sanitizes the various options
548 * to make sure we don't have conflicts, and initializes various
549 * members of td.
550 */
75154845 551static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
ebac4655 552{
3c9b60c1
JA		 553 const char *ddir_str[] = { "read", "write", "randread", "randwrite",
554 "rw", NULL, "randrw" };
ebac4655 555 struct stat sb;
53cdc686
JA		 556 int numjobs, ddir, i;
557 struct fio_file *f;
ebac4655 558
ebac4655
JA		 559 /*
560 * the def_thread is just for options, it's not a real job
561 */
562 if (td == &def_thread)
563 return 0;
564
df64119d
JA		 565 /*
566 * Set default io engine, if none set
567 */
568 if (!td->io_ops) {
569 td->io_ops = load_ioengine(td, DEF_IO_ENGINE_NAME);
570 if (!td->io_ops) {
571 log_err("default engine %s not there?\n", DEF_IO_ENGINE_NAME);
572 return 1;
573 }
574 }
575
690adba3
JA		 576 if (td->odirect)
577 td->io_ops->flags |= FIO_RAWIO;
578
ebac4655 579 td->filetype = FIO_TYPE_FILE;
0af7b542
JA		 580 if (!stat(jobname, &sb)) {
581 if (S_ISBLK(sb.st_mode))
582 td->filetype = FIO_TYPE_BD;
583 else if (S_ISCHR(sb.st_mode))
584 td->filetype = FIO_TYPE_CHAR;
585 }
ebac4655 586
e0a22335
JA		 587 fixup_options(td);
588
13f8e2d2
JA		 589 if (td->filename)
590 td->nr_uniq_files = 1;
591 else
592 td->nr_uniq_files = td->nr_files;
593
594 if (td->filetype == FIO_TYPE_FILE || td->filename) {
e9c047a0 595 char tmp[PATH_MAX];
53cdc686 596 int len = 0;
e9c047a0 597
ef899b63 598 if (td->directory && td->directory[0] != '\0')
53cdc686 599 sprintf(tmp, "%s/", td->directory);
ebac4655 600
53cdc686
JA		 601 td->files = malloc(sizeof(struct fio_file) * td->nr_files);
602
603 for_each_file(td, f, i) {
604 memset(f, 0, sizeof(*f));
605 f->fd = -1;
606
13f8e2d2
JA		 607 if (td->filename)
608 sprintf(tmp + len, "%s", td->filename);
609 else
610 sprintf(tmp + len, "%s.%d.%d", jobname, td->thread_number, i);
53cdc686
JA		 611 f->file_name = strdup(tmp);
612 }
613 } else {
614 td->nr_files = 1;
615 td->files = malloc(sizeof(struct fio_file));
616 f = &td->files[0];
617
618 memset(f, 0, sizeof(*f));
619 f->fd = -1;
620 f->file_name = strdup(jobname);
621 }
622
623 for_each_file(td, f, i) {
624 f->file_size = td->total_file_size / td->nr_files;
625 f->file_offset = td->start_offset;
626 }
627
bbfd6b00 628 fio_sem_init(&td->mutex, 0);
ebac4655
JA		 629
630 td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
631 td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
632 td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
633
ebac4655
JA		 634 if (td->stonewall && td->thread_number > 1)
635 groupid++;
636
637 td->groupid = groupid;
638
639 if (setup_rate(td))
640 goto err;
641
ec94ec56 642 if (td->write_lat_log) {
ebac4655
JA		 643 setup_log(&td->slat_log);
644 setup_log(&td->clat_log);
645 }
ec94ec56 646 if (td->write_bw_log)
ebac4655
JA		 647 setup_log(&td->bw_log);
648
b4692828
JA		 649 if (!td->name)
650 td->name = strdup(jobname);
01452055 651
3d60d1ed 652 ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
75154845 653
c6ae0a5b 654 if (!terse_output) {
b990b5c0 655 if (!job_add_num) {
2866c82d 656 if (td->io_ops->flags & FIO_CPUIO)
b990b5c0 657 fprintf(f_out, "%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
f8977ee6
JA		 658 else {
659 char *c1, *c2, *c3, *c4;
660
661 c1 = to_kmg(td->min_bs[DDIR_READ]);
662 c2 = to_kmg(td->max_bs[DDIR_READ]);
663 c3 = to_kmg(td->min_bs[DDIR_WRITE]);
664 c4 = to_kmg(td->max_bs[DDIR_WRITE]);
665
1e97cce9 666 fprintf(f_out, "%s: (g=%d): rw=%s, odir=%u, bs=%s-%s/%s-%s, rate=%u, ioengine=%s, iodepth=%u\n", td->name, td->groupid, ddir_str[ddir], td->odirect, c1, c2, c3, c4, td->rate, td->io_ops->name, td->iodepth);
f8977ee6
JA		 667
668 free(c1);
669 free(c2);
670 free(c3);
671 free(c4);
672 }
b990b5c0 673 } else if (job_add_num == 1)
c6ae0a5b
JA		 674 fprintf(f_out, "...\n");
675 }
ebac4655
JA		 676
677 /*
678 * recurse add identical jobs, clear numjobs and stonewall options
679 * as they don't apply to sub-jobs
680 */
681 numjobs = td->numjobs;
682 while (--numjobs) {
683 struct thread_data *td_new = get_new_job(0, td);
684
685 if (!td_new)
686 goto err;
687
688 td_new->numjobs = 1;
689 td_new->stonewall = 0;
75154845 690 job_add_num = numjobs - 1;
ebac4655 691
75154845 692 if (add_job(td_new, jobname, job_add_num))
ebac4655
JA		 693 goto err;
694 }
695 return 0;
696err:
697 put_job(td);
698 return -1;
699}
700
906c8d75
JA		 701/*
702 * Initialize the various random states we need (random io, block size ranges,
703 * read/write mix, etc).
704 */
ebac4655
JA		 705int init_random_state(struct thread_data *td)
706{
a6ccc7be 707 unsigned long seeds[4];
53cdc686 708 int fd, num_maps, blocks, i;
0ab8db89 709 struct fio_file *f;
ebac4655 710
f48b467c
JA		 711 if (td->io_ops->flags & FIO_CPUIO)
712 return 0;
713
1ac267bb 714 fd = open("/dev/urandom", O_RDONLY);
ebac4655
JA		 715 if (fd == -1) {
716 td_verror(td, errno);
717 return 1;
718 }
719
a6ccc7be 720 if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
ebac4655
JA		 721 td_verror(td, EIO);
722 close(fd);
723 return 1;
724 }
725
726 close(fd);
727
6dfd46b9
JA		 728 os_random_seed(seeds[0], &td->bsrange_state);
729 os_random_seed(seeds[1], &td->verify_state);
730 os_random_seed(seeds[2], &td->rwmix_state);
ebac4655
JA		 731
732 if (td->sequential)
733 return 0;
734
9ebc27e1 735 if (td->rand_repeatable)
a6ccc7be 736 seeds[3] = DEF_RANDSEED;
ebac4655 737
bb8895e0
JA		 738 if (!td->norandommap) {
739 for_each_file(td, f, i) {
a00735e6 740 blocks = (f->file_size + td->rw_min_bs - 1) / td->rw_min_bs;
c7c280ed 741 num_maps = (blocks + BLOCKS_PER_MAP-1)/ BLOCKS_PER_MAP;
bb8895e0
JA		 742 f->file_map = malloc(num_maps * sizeof(long));
743 f->num_maps = num_maps;
744 memset(f->file_map, 0, num_maps * sizeof(long));
745 }
53cdc686 746 }
ebac4655 747
6dfd46b9 748 os_random_seed(seeds[3], &td->random_state);
ebac4655
JA		 749 return 0;
750}
751
752static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
753{
754#ifdef FIO_HAVE_CPU_AFFINITY
755 unsigned int i;
756
757 CPU_ZERO(&cpumask);
758
759 for (i = 0; i < sizeof(int) * 8; i++) {
760 if ((1 << i) & cpu)
761 CPU_SET(i, &cpumask);
762 }
763#endif
764}
765
ebac4655
JA		 766static int is_empty_or_comment(char *line)
767{
768 unsigned int i;
769
770 for (i = 0; i < strlen(line); i++) {
771 if (line[i] == ';')
772 return 1;
773 if (!isspace(line[i]) && !iscntrl(line[i]))
774 return 0;
775 }
776
777 return 1;
778}
779
b4692828 780static int str_rw_cb(void *data, const char *mem)
ebac4655 781{
cb2c86fd
JA		 782 struct thread_data *td = data;
783
ebac4655
JA		 784 if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
785 td->ddir = DDIR_READ;
786 td->sequential = 1;
787 return 0;
788 } else if (!strncmp(mem, "randread", 8)) {
789 td->ddir = DDIR_READ;
790 td->sequential = 0;
791 return 0;
792 } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
793 td->ddir = DDIR_WRITE;
794 td->sequential = 1;
795 return 0;
796 } else if (!strncmp(mem, "randwrite", 9)) {
797 td->ddir = DDIR_WRITE;
798 td->sequential = 0;
799 return 0;
3d60d1ed 800 } else if (!strncmp(mem, "rw", 2)) {
1e97cce9 801 td->ddir = DDIR_READ;
3d60d1ed
JA		 802 td->iomix = 1;
803 td->sequential = 1;
804 return 0;
805 } else if (!strncmp(mem, "randrw", 6)) {
1e97cce9 806 td->ddir = DDIR_READ;
3d60d1ed
JA		 807 td->iomix = 1;
808 td->sequential = 0;
809 return 0;
ebac4655
JA		 810 }
811
3b70d7e5 812 log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
ebac4655
JA		 813 return 1;
814}
815
b4692828 816static int str_verify_cb(void *data, const char *mem)
ebac4655 817{
cb2c86fd
JA		 818 struct thread_data *td = data;
819
ebac4655
JA		 820 if (!strncmp(mem, "0", 1)) {
821 td->verify = VERIFY_NONE;
822 return 0;
823 } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
824 td->verify = VERIFY_MD5;
825 return 0;
826 } else if (!strncmp(mem, "crc32", 5)) {
827 td->verify = VERIFY_CRC32;
828 return 0;
829 }
830
3b70d7e5 831 log_err("fio: verify types: md5, crc32\n");
ebac4655
JA		 832 return 1;
833}
834
b4692828 835static int str_mem_cb(void *data, const char *mem)
ebac4655 836{
cb2c86fd
JA		 837 struct thread_data *td = data;
838
ebac4655
JA		 839 if (!strncmp(mem, "malloc", 6)) {
840 td->mem_type = MEM_MALLOC;
841 return 0;
d0bdaf49
JA		 842 } else if (!strncmp(mem, "mmaphuge", 8)) {
843#ifdef FIO_HAVE_HUGETLB
844 char *hugefile;
845
846 /*
847 * mmaphuge must be appended with the actual file
848 */
849 hugefile = strstr(mem, ":");
850 if (!hugefile) {
851 log_err("fio: mmaphuge:/path/to/file\n");
852 return 1;
853 }
854
855 hugefile++;
856 strip_blank_front(&hugefile);
857 strip_blank_end(hugefile);
858 td->hugefile = strdup(hugefile);
859 td->mem_type = MEM_MMAPHUGE;
860 return 0;
861#else
862 log_err("fio: mmaphuge not available\n");
863 return 1;
864#endif
ebac4655
JA		 865 } else if (!strncmp(mem, "mmap", 4)) {
866 td->mem_type = MEM_MMAP;
867 return 0;
74b025b0
JA		 868 } else if (!strncmp(mem, "shmhuge", 7)) {
869#ifdef FIO_HAVE_HUGETLB
870 td->mem_type = MEM_SHMHUGE;
871 return 0;
872#else
873 log_err("fio: shmhuge not available\n");
874 return 1;
875#endif
0268b8ba
JA		 876 } else if (!strncmp(mem, "shm", 3)) {
877 td->mem_type = MEM_SHM;
878 return 0;
ebac4655
JA		 879 }
880
d0bdaf49 881 log_err("fio: mem type: malloc, shm, shmhuge, mmap, mmaphuge\n");
ebac4655
JA		 882 return 1;
883}
884
b4692828 885static int str_ioengine_cb(void *data, const char *str)
ebac4655 886{
cb2c86fd
JA		 887 struct thread_data *td = data;
888
2866c82d
JA		 889 td->io_ops = load_ioengine(td, str);
890 if (td->io_ops)
b990b5c0 891 return 0;
ebac4655 892
08aae9a0 893 log_err("fio: ioengine= libaio, posixaio, sync, mmap, sgio, splice, cpu, null\n");
5f350952 894 log_err("fio: or specify path to dynamic ioengine module\n");
ebac4655
JA		 895 return 1;
896}
897
e1f36503
JA		 898static int str_lockmem_cb(void fio_unused *data, unsigned long *val)
899{
900 mlock_size = *val;
901 return 0;
902}
903
34cfcdaf 904#ifdef FIO_HAVE_IOPRIO
e1f36503
JA		 905static int str_prioclass_cb(void *data, unsigned int *val)
906{
907 struct thread_data *td = data;
908
909 td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
910 return 0;
911}
912
913static int str_prio_cb(void *data, unsigned int *val)
914{
915 struct thread_data *td = data;
916
917 td->ioprio |= *val;
918 return 0;
919}
34cfcdaf 920#endif
e1f36503
JA		 921
922static int str_exitall_cb(void)
923{
924 exitall_on_terminate = 1;
925 return 0;
926}
927
928static int str_cpumask_cb(void *data, unsigned int *val)
929{
930 struct thread_data *td = data;
931
932 fill_cpu_mask(td->cpumask, *val);
933 return 0;
934}
935
07261983
JA		 936/*
937 * This is our [ini] type file parser.
938 */
1e97cce9 939static int parse_jobs_ini(char *file, int stonewall_flag)
ebac4655 940{
e1f36503 941 unsigned int global;
ebac4655 942 struct thread_data *td;
fee3bb48 943 char *string, *name;
ebac4655
JA		 944 fpos_t off;
945 FILE *f;
946 char *p;
0c7e37a0 947 int ret = 0, stonewall;
ebac4655
JA		 948
949 f = fopen(file, "r");
950 if (!f) {
aea47d44 951 perror("fopen job file");
ebac4655
JA		 952 return 1;
953 }
954
955 string = malloc(4096);
956 name = malloc(256);
fee3bb48 957 memset(name, 0, 256);
ebac4655 958
0c7e37a0 959 stonewall = stonewall_flag;
7c124ac1
JA		 960 do {
961 p = fgets(string, 4095, f);
962 if (!p)
45410acb 963 break;
ebac4655
JA		 964 if (is_empty_or_comment(p))
965 continue;
fee3bb48 966 if (sscanf(p, "[%255s]", name) != 1)
ebac4655
JA		 967 continue;
968
969 global = !strncmp(name, "global", 6);
970
971 name[strlen(name) - 1] = '\0';
972
973 td = get_new_job(global, &def_thread);
45410acb
JA		 974 if (!td) {
975 ret = 1;
976 break;
977 }
ebac4655 978
972cfd25
JA		 979 /*
980 * Seperate multiple job files by a stonewall
981 */
f9481919 982 if (!global && stonewall) {
972cfd25
JA		 983 td->stonewall = stonewall;
984 stonewall = 0;
985 }
986
ebac4655
JA		 987 fgetpos(f, &off);
988 while ((p = fgets(string, 4096, f)) != NULL) {
989 if (is_empty_or_comment(p))
990 continue;
e1f36503 991
b6754f9d 992 strip_blank_front(&p);
7c124ac1
JA		 993
994 if (p[0] == '[')
995 break;
996
4ae3f763 997 strip_blank_end(p);
aea47d44 998
e1f36503 999 fgetpos(f, &off);
ebac4655 1000
45410acb
JA		 1001 /*
1002 * Don't break here, continue parsing options so we
1003 * dump all the bad ones. Makes trial/error fixups
1004 * easier on the user.
1005 */
7c124ac1 1006 ret |= parse_option(p, options, td);
ebac4655 1007 }
ebac4655 1008
45410acb
JA		 1009 if (!ret) {
1010 fsetpos(f, &off);
1011 ret = add_job(td, name, 0);
b1508cf9
JA		 1012 } else {
1013 log_err("fio: job %s dropped\n", name);
1014 put_job(td);
45410acb 1015 }
7c124ac1 1016 } while (!ret);
ebac4655
JA		 1017
1018 free(string);
1019 free(name);
1020 fclose(f);
45410acb 1021 return ret;
ebac4655
JA		 1022}
1023
1024static int fill_def_thread(void)
1025{
1026 memset(&def_thread, 0, sizeof(def_thread));
1027
1028 if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
1029 perror("sched_getaffinity");
1030 return 1;
1031 }
1032
1033 /*
1034 * fill globals
1035 */
1036 def_thread.ddir = DDIR_READ;
3d60d1ed 1037 def_thread.iomix = 0;
a00735e6
JA		 1038 def_thread.bs[DDIR_READ] = DEF_BS;
1039 def_thread.bs[DDIR_WRITE] = DEF_BS;
1040 def_thread.min_bs[DDIR_READ] = def_thread.min_bs[DDIR_WRITE] = 0;
1041 def_thread.max_bs[DDIR_READ] = def_thread.max_bs[DDIR_WRITE] = 0;
9ebc27e1 1042 def_thread.odirect = DEF_ODIRECT;
ebac4655 1043 def_thread.ratecycle = DEF_RATE_CYCLE;
9ebc27e1 1044 def_thread.sequential = DEF_SEQUENTIAL;
972cfd25 1045 def_thread.timeout = def_timeout;
ebac4655
JA		 1046 def_thread.overwrite = DEF_OVERWRITE;
1047 def_thread.invalidate_cache = DEF_INVALIDATE;
1048 def_thread.sync_io = DEF_SYNCIO;
1049 def_thread.mem_type = MEM_MALLOC;
1050 def_thread.bw_avg_time = DEF_BWAVGTIME;
1051 def_thread.create_serialize = DEF_CREATE_SER;
1052 def_thread.create_fsync = DEF_CREATE_FSYNC;
1053 def_thread.loops = DEF_LOOPS;
1054 def_thread.verify = DEF_VERIFY;
1055 def_thread.stonewall = DEF_STONEWALL;
1056 def_thread.numjobs = DEF_NUMJOBS;
1057 def_thread.use_thread = DEF_USE_THREAD;
a6ccc7be
JA		 1058 def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
1059 def_thread.rwmixread = DEF_RWMIX_READ;
b6f4d880 1060 def_thread.nice = DEF_NICE;
9ebc27e1 1061 def_thread.rand_repeatable = DEF_RAND_REPEAT;
53cdc686 1062 def_thread.nr_files = DEF_NR_FILES;
f6cbb269 1063 def_thread.unlink = DEF_UNLINK;
ec94ec56
JA		 1064 def_thread.write_bw_log = write_bw_log;
1065 def_thread.write_lat_log = write_lat_log;
bb8895e0 1066 def_thread.norandommap = DEF_NO_RAND_MAP;
56bb17f2 1067 def_thread.hugepage_size = DEF_HUGEPAGE_SIZE;
ebac4655
JA		 1068#ifdef FIO_HAVE_DISK_UTIL
1069 def_thread.do_disk_util = 1;
1070#endif
1071
1072 return 0;
1073}
1074
0ab8db89 1075static void usage(void)
4785f995
JA		 1076{
1077 printf("%s\n", fio_version_string);
b4692828
JA		 1078 printf("\t--output\tWrite output to file\n");
1079 printf("\t--timeout\tRuntime in seconds\n");
1080 printf("\t--latency-log\tGenerate per-job latency logs\n");
1081 printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n");
1082 printf("\t--minimal\tMinimal (terse) output\n");
1083 printf("\t--version\tPrint version info and exit\n");
4785f995
JA		 1084}
1085
972cfd25 1086static int parse_cmd_line(int argc, char *argv[])
ebac4655 1087{
b4692828 1088 struct thread_data *td = NULL;
c2b1e753 1089 int c, ini_idx = 0, lidx, ret;
ebac4655 1090
b4692828 1091 while ((c = getopt_long(argc, argv, "", long_options, &lidx)) != -1) {
ebac4655 1092 switch (c) {
b4692828
JA		 1093 case 't':
1094 def_timeout = atoi(optarg);
1095 break;
1096 case 'l':
1097 write_lat_log = 1;
1098 break;
1099 case 'w':
1100 write_bw_log = 1;
1101 break;
1102 case 'o':
1103 f_out = fopen(optarg, "w+");
1104 if (!f_out) {
1105 perror("fopen output");
1106 exit(1);
1107 }
1108 f_err = f_out;
1109 break;
1110 case 'm':
1111 terse_output = 1;
1112 break;
1113 case 'h':
1114 usage();
1115 exit(0);
1116 case 'v':
1117 printf("%s\n", fio_version_string);
1118 exit(0);
1119 case FIO_GETOPT_JOB: {
1120 const char *opt = long_options[lidx].name;
1121 char *val = optarg;
1122
c2b1e753
JA		 1123 if (!strncmp(opt, "name", 4) && td) {
1124 ret = add_job(td, td->name ?: "fio", 0);
1125 if (ret) {
1126 put_job(td);
1127 return 0;
1128 }
1129 td = NULL;
1130 }
b4692828 1131 if (!td) {
38d0adb0 1132 int global = !strncmp(val, "global", 6);
c2b1e753
JA		 1133
1134 td = get_new_job(global, &def_thread);
b4692828
JA		 1135 if (!td)
1136 return 0;
1137 }
38d0adb0 1138
b1508cf9
JA		 1139 ret = parse_cmd_option(opt, val, options, td);
1140 if (ret) {
1141 log_err("fio: job dropped\n");
1142 put_job(td);
1143 td = NULL;
1144 }
b4692828
JA		 1145 break;
1146 }
1147 default:
1148 printf("optarg <<%s>>\n", argv[optind]);
1149 break;
ebac4655
JA		 1150 }
1151 }
c9fad893 1152
b4692828 1153 if (td) {
c2b1e753 1154 ret = add_job(td, td->name ?: "fio", 0);
b4692828
JA		 1155 if (ret)
1156 put_job(td);
972cfd25 1157 }
774a6177 1158
b4692828
JA		 1159 while (optind < argc) {
1160 ini_idx++;
1161 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1162 ini_file[ini_idx - 1] = strdup(argv[optind]);
1163 optind++;
eb8bbf48 1164 }
972cfd25
JA		 1165
1166 return ini_idx;
ebac4655
JA		 1167}
1168
1169static void free_shm(void)
1170{
1171 struct shmid_ds sbuf;
1172
1173 if (threads) {
2c0ecd28 1174 shmdt((void *) threads);
ebac4655
JA		 1175 threads = NULL;
1176 shmctl(shm_id, IPC_RMID, &sbuf);
1177 }
1178}
1179
906c8d75
JA		 1180/*
1181 * The thread area is shared between the main process and the job
1182 * threads/processes. So setup a shared memory segment that will hold
1183 * all the job info.
1184 */
ebac4655
JA		 1185static int setup_thread_area(void)
1186{
1187 /*
1188 * 1024 is too much on some machines, scale max_jobs if
1189 * we get a failure that looks like too large a shm segment
1190 */
1191 do {
906c8d75 1192 size_t size = max_jobs * sizeof(struct thread_data);
ebac4655 1193
906c8d75 1194 shm_id = shmget(0, size, IPC_CREAT | 0600);
ebac4655
JA		 1195 if (shm_id != -1)
1196 break;
1197 if (errno != EINVAL) {
1198 perror("shmget");
1199 break;
1200 }
1201
1202 max_jobs >>= 1;
1203 } while (max_jobs);
1204
1205 if (shm_id == -1)
1206 return 1;
1207
1208 threads = shmat(shm_id, NULL, 0);
1209 if (threads == (void *) -1) {
1210 perror("shmat");
1211 return 1;
1212 }
1213
1214 atexit(free_shm);
1215 return 0;
1216}
1217
b4692828
JA		 1218/*
1219 * Copy the fio options into the long options map, so we mirror
1220 * job and cmd line options.
1221 */
1222static void dupe_job_options(void)
1223{
1224 struct fio_option *o;
1225 unsigned int i;
1226
1227 i = 0;
1228 while (long_options[i].name)
1229 i++;
1230
1231 o = &options[0];
1232 while (o->name) {
1233 long_options[i].name = o->name;
1234 long_options[i].val = FIO_GETOPT_JOB;
1235 if (o->type == FIO_OPT_STR_SET)
1236 long_options[i].has_arg = no_argument;
1237 else
1238 long_options[i].has_arg = required_argument;
1239
1240 i++;
1241 o++;
1242 assert(i < FIO_JOB_OPTS + FIO_CMD_OPTS);
1243 }
1244}
1245
ebac4655
JA		 1246int parse_options(int argc, char *argv[])
1247{
972cfd25
JA		 1248 int job_files, i;
1249
b4692828
JA		 1250 f_out = stdout;
1251 f_err = stderr;
1252
1253 dupe_job_options();
1254
ebac4655
JA		 1255 if (setup_thread_area())
1256 return 1;
1257 if (fill_def_thread())
1258 return 1;
1259
972cfd25 1260 job_files = parse_cmd_line(argc, argv);
ebac4655 1261
972cfd25
JA		 1262 for (i = 0; i < job_files; i++) {
1263 if (fill_def_thread())
1264 return 1;
0c7e37a0 1265 if (parse_jobs_ini(ini_file[i], i))
972cfd25 1266 return 1;
88c6ed80 1267 free(ini_file[i]);
972cfd25 1268 }
ebac4655 1269
88c6ed80 1270 free(ini_file);
b4692828
JA		 1271
1272 if (!thread_number) {
1273 log_err("No jobs defined(s)\n");
b4692828
JA		 1274 return 1;
1275 }
1276
ebac4655
JA		 1277 return 0;
1278}
fio - Flexible IO Tester