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[PATCH] Fixup iolog config setting
[fio.git] / init.c
... / ...
CommitLineData
1/*
2 * This file contains job initialization and setup functions.
3 */
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>
11#include <sys/ipc.h>
12#include <sys/shm.h>
13#include <sys/types.h>
14#include <sys/stat.h>
15
16#include "fio.h"
17#include "parse.h"
18
19/*
20 * The default options
21 */
22#define DEF_BS (4096)
23#define DEF_TIMEOUT (0)
24#define DEF_RATE_CYCLE (1000)
25#define DEF_ODIRECT (1)
26#define DEF_IO_ENGINE (FIO_SYNCIO)
27#define DEF_IO_ENGINE_NAME "sync"
28#define DEF_SEQUENTIAL (1)
29#define DEF_RAND_REPEAT (1)
30#define DEF_OVERWRITE (1)
31#define DEF_INVALIDATE (1)
32#define DEF_SYNCIO (0)
33#define DEF_RANDSEED (0xb1899bedUL)
34#define DEF_BWAVGTIME (500)
35#define DEF_CREATE_SER (1)
36#define DEF_CREATE_FSYNC (1)
37#define DEF_LOOPS (1)
38#define DEF_VERIFY (0)
39#define DEF_STONEWALL (0)
40#define DEF_NUMJOBS (1)
41#define DEF_USE_THREAD (0)
42#define DEF_FILE_SIZE (1024 * 1024 * 1024UL)
43#define DEF_ZONE_SIZE (0)
44#define DEF_ZONE_SKIP (0)
45#define DEF_RWMIX_CYCLE (500)
46#define DEF_RWMIX_READ (50)
47#define DEF_NICE (0)
48#define DEF_NR_FILES (1)
49#define DEF_UNLINK (0)
50#define DEF_WRITE_BW_LOG (0)
51#define DEF_WRITE_LAT_LOG (0)
52
53#define td_var_offset(var) ((size_t) &((struct thread_data *)0)->var)
54
55static int str_rw_cb(void *, char *);
56static int str_ioengine_cb(void *, char *);
57static int str_mem_cb(void *, char *);
58static int str_verify_cb(void *, char *);
59static int str_lockmem_cb(void *, unsigned long *);
60static int str_prio_cb(void *, unsigned int *);
61static int str_prioclass_cb(void *, unsigned int *);
62static int str_exitall_cb(void);
63static int str_cpumask_cb(void *, unsigned int *);
64
65/*
66 * Map of job/command line options
67 */
68static struct fio_option options[] = {
69 {
70 .name = "name",
71 .type = FIO_OPT_STR_STORE,
72 .off1 = td_var_offset(name),
73 },
74 {
75 .name = "directory",
76 .type = FIO_OPT_STR_STORE,
77 .off1 = td_var_offset(directory),
78 },
79 {
80 .name = "filename",
81 .type = FIO_OPT_STR_STORE,
82 .off1 = td_var_offset(filename),
83 },
84 {
85 .name = "rw",
86 .type = FIO_OPT_STR,
87 .cb = str_rw_cb,
88 },
89 {
90 .name = "ioengine",
91 .type = FIO_OPT_STR,
92 .cb = str_ioengine_cb,
93 },
94 {
95 .name = "mem",
96 .type = FIO_OPT_STR,
97 .cb = str_mem_cb,
98 },
99 {
100 .name = "verify",
101 .type = FIO_OPT_STR,
102 .cb = str_verify_cb,
103 },
104 {
105 .name = "write_iolog",
106 .type = FIO_OPT_INT,
107 .off1 = td_var_offset(write_iolog),
108 },
109 {
110 .name = "iolog",
111 .type = FIO_OPT_STR_STORE,
112 .off1 = td_var_offset(iolog),
113 },
114 {
115 .name = "exec_prerun",
116 .type = FIO_OPT_STR_STORE,
117 .off1 = td_var_offset(exec_prerun),
118 },
119 {
120 .name = "exec_postrun",
121 .type = FIO_OPT_STR_STORE,
122 .off1 = td_var_offset(exec_postrun),
123 },
124#ifdef FIO_HAVE_IOSCHED_SWITCH
125 {
126 .name = "ioscheduler",
127 .type = FIO_OPT_STR_STORE,
128 .off1 = td_var_offset(ioscheduler),
129 },
130#endif
131 {
132 .name = "size",
133 .type = FIO_OPT_STR_VAL,
134 .off1 = td_var_offset(total_file_size),
135 },
136 {
137 .name = "bs",
138 .type = FIO_OPT_STR_VAL,
139 .off1 = td_var_offset(bs),
140 },
141 {
142 .name = "offset",
143 .type = FIO_OPT_STR_VAL,
144 .off1 = td_var_offset(start_offset),
145 },
146 {
147 .name = "zonesize",
148 .type = FIO_OPT_STR_VAL,
149 .off1 = td_var_offset(zone_size),
150 },
151 {
152 .name = "zoneskip",
153 .type = FIO_OPT_STR_VAL,
154 .off1 = td_var_offset(zone_skip),
155 },
156 {
157 .name = "lockmem",
158 .type = FIO_OPT_STR_VAL,
159 .cb = str_lockmem_cb,
160 },
161 {
162 .name = "bsrange",
163 .type = FIO_OPT_RANGE,
164 .off1 = td_var_offset(min_bs),
165 .off2 = td_var_offset(max_bs),
166 },
167 {
168 .name = "nrfiles",
169 .type = FIO_OPT_INT,
170 .off1 = td_var_offset(nr_files),
171 },
172 {
173 .name = "iodepth",
174 .type = FIO_OPT_INT,
175 .off1 = td_var_offset(iodepth),
176 },
177 {
178 .name = "fsync",
179 .type = FIO_OPT_INT,
180 .off1 = td_var_offset(fsync_blocks),
181 },
182 {
183 .name = "rwmixcycle",
184 .type = FIO_OPT_INT,
185 .off1 = td_var_offset(rwmixcycle),
186 },
187 {
188 .name = "rwmixread",
189 .type = FIO_OPT_INT,
190 .off1 = td_var_offset(rwmixread),
191 .max_val= 100,
192 },
193 {
194 .name = "rwmixwrite",
195 .type = FIO_OPT_INT,
196 .off1 = td_var_offset(rwmixwrite),
197 .max_val= 100,
198 },
199 {
200 .name = "nice",
201 .type = FIO_OPT_INT,
202 .off1 = td_var_offset(nice),
203 },
204#ifdef FIO_HAVE_IOPRIO
205 {
206 .name = "prio",
207 .type = FIO_OPT_INT,
208 .cb = str_prio_cb,
209 },
210 {
211 .name = "prioclass",
212 .type = FIO_OPT_INT,
213 .cb = str_prioclass_cb,
214 },
215#endif
216 {
217 .name = "thinktime",
218 .type = FIO_OPT_INT,
219 .off1 = td_var_offset(thinktime)
220 },
221 {
222 .name = "rate",
223 .type = FIO_OPT_INT,
224 .off1 = td_var_offset(rate)
225 },
226 {
227 .name = "ratemin",
228 .type = FIO_OPT_INT,
229 .off1 = td_var_offset(ratemin)
230 },
231 {
232 .name = "ratecycle",
233 .type = FIO_OPT_INT,
234 .off1 = td_var_offset(ratecycle)
235 },
236 {
237 .name = "startdelay",
238 .type = FIO_OPT_INT,
239 .off1 = td_var_offset(start_delay)
240 },
241 {
242 .name = "timeout",
243 .type = FIO_OPT_STR_VAL_TIME,
244 .off1 = td_var_offset(timeout)
245 },
246 {
247 .name = "invalidate",
248 .type = FIO_OPT_INT,
249 .off1 = td_var_offset(invalidate_cache)
250 },
251 {
252 .name = "sync",
253 .type = FIO_OPT_INT,
254 .off1 = td_var_offset(sync_io)
255 },
256 {
257 .name = "bwavgtime",
258 .type = FIO_OPT_INT,
259 .off1 = td_var_offset(bw_avg_time)
260 },
261 {
262 .name = "create_serialize",
263 .type = FIO_OPT_INT,
264 .off1 = td_var_offset(create_serialize)
265 },
266 {
267 .name = "create_fsync",
268 .type = FIO_OPT_INT,
269 .off1 = td_var_offset(create_fsync)
270 },
271 {
272 .name = "loops",
273 .type = FIO_OPT_INT,
274 .off1 = td_var_offset(loops)
275 },
276 {
277 .name = "numjobs",
278 .type = FIO_OPT_INT,
279 .off1 = td_var_offset(numjobs)
280 },
281 {
282 .name = "cpuload",
283 .type = FIO_OPT_INT,
284 .off1 = td_var_offset(cpuload)
285 },
286 {
287 .name = "cpuchunks",
288 .type = FIO_OPT_INT,
289 .off1 = td_var_offset(cpucycle)
290 },
291 {
292 .name = "direct",
293 .type = FIO_OPT_INT,
294 .off1 = td_var_offset(odirect)
295 },
296 {
297 .name = "overwrite",
298 .type = FIO_OPT_INT,
299 .off1 = td_var_offset(overwrite)
300 },
301#ifdef FIO_HAVE_CPU_AFFINITY
302 {
303 .name = "cpumask",
304 .type = FIO_OPT_INT,
305 .cb = str_cpumask_cb,
306 },
307#endif
308 {
309 .name = "end_fsync",
310 .type = FIO_OPT_INT,
311 .off1 = td_var_offset(end_fsync)
312 },
313 {
314 .name = "unlink",
315 .type = FIO_OPT_STR_SET,
316 .off1 = td_var_offset(unlink),
317 },
318 {
319 .name = "exitall",
320 .type = FIO_OPT_STR_SET,
321 .cb = str_exitall_cb,
322 },
323 {
324 .name = "stonewall",
325 .type = FIO_OPT_STR_SET,
326 .off1 = td_var_offset(stonewall),
327 },
328 {
329 .name = "thread",
330 .type = FIO_OPT_STR_SET,
331 .off1 = td_var_offset(thread),
332 },
333 {
334 .name = "write_bw_log",
335 .type = FIO_OPT_STR_SET,
336 .off1 = td_var_offset(write_bw_log),
337 },
338 {
339 .name = "write_lat_log",
340 .type = FIO_OPT_STR_SET,
341 .off1 = td_var_offset(write_lat_log),
342 },
343 {
344 .name = NULL,
345 },
346};
347
348static int def_timeout = DEF_TIMEOUT;
349
350static char fio_version_string[] = "fio 1.5";
351
352static char **ini_file;
353static int max_jobs = MAX_JOBS;
354
355struct thread_data def_thread;
356struct thread_data *threads = NULL;
357
358int rate_quit = 0;
359int exitall_on_terminate = 0;
360int terse_output = 0;
361unsigned long long mlock_size = 0;
362FILE *f_out = NULL;
363FILE *f_err = NULL;
364
365static int write_lat_log = DEF_WRITE_LAT_LOG;
366static int write_bw_log = DEF_WRITE_BW_LOG;
367
368/*
369 * Return a free job structure.
370 */
371static struct thread_data *get_new_job(int global, struct thread_data *parent)
372{
373 struct thread_data *td;
374
375 if (global)
376 return &def_thread;
377 if (thread_number >= max_jobs)
378 return NULL;
379
380 td = &threads[thread_number++];
381 *td = *parent;
382 td->name[0] = '\0';
383
384 td->thread_number = thread_number;
385 return td;
386}
387
388static void put_job(struct thread_data *td)
389{
390 memset(&threads[td->thread_number - 1], 0, sizeof(*td));
391 thread_number--;
392}
393
394/*
395 * Lazy way of fixing up options that depend on each other. We could also
396 * define option callback handlers, but this is easier.
397 */
398static void fixup_options(struct thread_data *td)
399{
400 if (!td->min_bs)
401 td->min_bs = td->bs;
402 if (!td->max_bs)
403 td->max_bs = td->bs;
404
405 if (!td->rwmixread && td->rwmixwrite)
406 td->rwmixread = 100 - td->rwmixwrite;
407
408 if (td->iolog && !td->write_iolog)
409 td->read_iolog = 1;
410}
411
412/*
413 * Adds a job to the list of things todo. Sanitizes the various options
414 * to make sure we don't have conflicts, and initializes various
415 * members of td.
416 */
417static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
418{
419 char *ddir_str[] = { "read", "write", "randread", "randwrite",
420 "rw", NULL, "randrw" };
421 struct stat sb;
422 int numjobs, ddir, i;
423 struct fio_file *f;
424
425#ifndef FIO_HAVE_LIBAIO
426 if (td->io_engine == FIO_LIBAIO) {
427 log_err("Linux libaio not available\n");
428 return 1;
429 }
430#endif
431#ifndef FIO_HAVE_POSIXAIO
432 if (td->io_engine == FIO_POSIXAIO) {
433 log_err("posix aio not available\n");
434 return 1;
435 }
436#endif
437
438 fixup_options(td);
439
440 /*
441 * the def_thread is just for options, it's not a real job
442 */
443 if (td == &def_thread)
444 return 0;
445
446 /*
447 * Set default io engine, if none set
448 */
449 if (!td->io_ops) {
450 td->io_ops = load_ioengine(td, DEF_IO_ENGINE_NAME);
451 if (!td->io_ops) {
452 log_err("default engine %s not there?\n", DEF_IO_ENGINE_NAME);
453 return 1;
454 }
455 }
456
457 if (td->io_ops->flags & FIO_SYNCIO)
458 td->iodepth = 1;
459 else {
460 if (!td->iodepth)
461 td->iodepth = td->nr_files;
462 }
463
464 /*
465 * only really works for sequential io for now, and with 1 file
466 */
467 if (td->zone_size && !td->sequential && td->nr_files == 1)
468 td->zone_size = 0;
469
470 /*
471 * Reads can do overwrites, we always need to pre-create the file
472 */
473 if (td_read(td) || td_rw(td))
474 td->overwrite = 1;
475
476 td->filetype = FIO_TYPE_FILE;
477 if (!stat(jobname, &sb)) {
478 if (S_ISBLK(sb.st_mode))
479 td->filetype = FIO_TYPE_BD;
480 else if (S_ISCHR(sb.st_mode))
481 td->filetype = FIO_TYPE_CHAR;
482 }
483
484 if (td->odirect)
485 td->io_ops->flags |= FIO_RAWIO;
486
487 if (td->filename)
488 td->nr_uniq_files = 1;
489 else
490 td->nr_uniq_files = td->nr_files;
491
492 if (td->filetype == FIO_TYPE_FILE || td->filename) {
493 char tmp[PATH_MAX];
494 int len = 0;
495 int i;
496
497 if (td->directory && td->directory[0] != '\0')
498 sprintf(tmp, "%s/", td->directory);
499
500 td->files = malloc(sizeof(struct fio_file) * td->nr_files);
501
502 for_each_file(td, f, i) {
503 memset(f, 0, sizeof(*f));
504 f->fd = -1;
505
506 if (td->filename)
507 sprintf(tmp + len, "%s", td->filename);
508 else
509 sprintf(tmp + len, "%s.%d.%d", jobname, td->thread_number, i);
510 f->file_name = strdup(tmp);
511 }
512 } else {
513 td->nr_files = 1;
514 td->files = malloc(sizeof(struct fio_file));
515 f = &td->files[0];
516
517 memset(f, 0, sizeof(*f));
518 f->fd = -1;
519 f->file_name = strdup(jobname);
520 }
521
522 for_each_file(td, f, i) {
523 f->file_size = td->total_file_size / td->nr_files;
524 f->file_offset = td->start_offset;
525 }
526
527 fio_sem_init(&td->mutex, 0);
528
529 td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
530 td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
531 td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
532
533 if (td->min_bs == -1U)
534 td->min_bs = td->bs;
535 if (td->max_bs == -1U)
536 td->max_bs = td->bs;
537 if (td_read(td) && !td_rw(td))
538 td->verify = 0;
539
540 if (td->stonewall && td->thread_number > 1)
541 groupid++;
542
543 td->groupid = groupid;
544
545 if (setup_rate(td))
546 goto err;
547
548 if (td->write_lat_log) {
549 setup_log(&td->slat_log);
550 setup_log(&td->clat_log);
551 }
552 if (td->write_bw_log)
553 setup_log(&td->bw_log);
554
555 if (td->name[0] == '\0')
556 snprintf(td->name, sizeof(td->name)-1, "client%d", td->thread_number);
557
558 ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
559
560 if (!terse_output) {
561 if (!job_add_num) {
562 if (td->io_ops->flags & FIO_CPUIO)
563 fprintf(f_out, "%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
564 else
565 fprintf(f_out, "%s: (g=%d): rw=%s, odir=%d, bs=%d-%d, rate=%d, ioengine=%s, iodepth=%d\n", td->name, td->groupid, ddir_str[ddir], td->odirect, td->min_bs, td->max_bs, td->rate, td->io_ops->name, td->iodepth);
566 } else if (job_add_num == 1)
567 fprintf(f_out, "...\n");
568 }
569
570 /*
571 * recurse add identical jobs, clear numjobs and stonewall options
572 * as they don't apply to sub-jobs
573 */
574 numjobs = td->numjobs;
575 while (--numjobs) {
576 struct thread_data *td_new = get_new_job(0, td);
577
578 if (!td_new)
579 goto err;
580
581 td_new->numjobs = 1;
582 td_new->stonewall = 0;
583 job_add_num = numjobs - 1;
584
585 if (add_job(td_new, jobname, job_add_num))
586 goto err;
587 }
588 return 0;
589err:
590 put_job(td);
591 return -1;
592}
593
594/*
595 * Initialize the various random states we need (random io, block size ranges,
596 * read/write mix, etc).
597 */
598int init_random_state(struct thread_data *td)
599{
600 unsigned long seeds[4];
601 int fd, num_maps, blocks, i;
602 struct fio_file *f;
603
604 fd = open("/dev/urandom", O_RDONLY);
605 if (fd == -1) {
606 td_verror(td, errno);
607 return 1;
608 }
609
610 if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
611 td_verror(td, EIO);
612 close(fd);
613 return 1;
614 }
615
616 close(fd);
617
618 os_random_seed(seeds[0], &td->bsrange_state);
619 os_random_seed(seeds[1], &td->verify_state);
620 os_random_seed(seeds[2], &td->rwmix_state);
621
622 if (td->sequential)
623 return 0;
624
625 if (td->rand_repeatable)
626 seeds[3] = DEF_RANDSEED;
627
628 for_each_file(td, f, i) {
629 blocks = (f->file_size + td->min_bs - 1) / td->min_bs;
630 num_maps = blocks / BLOCKS_PER_MAP;
631 f->file_map = malloc(num_maps * sizeof(long));
632 f->num_maps = num_maps;
633 memset(f->file_map, 0, num_maps * sizeof(long));
634 }
635
636 os_random_seed(seeds[3], &td->random_state);
637 return 0;
638}
639
640static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
641{
642#ifdef FIO_HAVE_CPU_AFFINITY
643 unsigned int i;
644
645 CPU_ZERO(&cpumask);
646
647 for (i = 0; i < sizeof(int) * 8; i++) {
648 if ((1 << i) & cpu)
649 CPU_SET(i, &cpumask);
650 }
651#endif
652}
653
654static int is_empty_or_comment(char *line)
655{
656 unsigned int i;
657
658 for (i = 0; i < strlen(line); i++) {
659 if (line[i] == ';')
660 return 1;
661 if (!isspace(line[i]) && !iscntrl(line[i]))
662 return 0;
663 }
664
665 return 1;
666}
667
668static int str_rw_cb(void *data, char *mem)
669{
670 struct thread_data *td = data;
671
672 if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
673 td->ddir = DDIR_READ;
674 td->sequential = 1;
675 return 0;
676 } else if (!strncmp(mem, "randread", 8)) {
677 td->ddir = DDIR_READ;
678 td->sequential = 0;
679 return 0;
680 } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
681 td->ddir = DDIR_WRITE;
682 td->sequential = 1;
683 return 0;
684 } else if (!strncmp(mem, "randwrite", 9)) {
685 td->ddir = DDIR_WRITE;
686 td->sequential = 0;
687 return 0;
688 } else if (!strncmp(mem, "rw", 2)) {
689 td->ddir = 0;
690 td->iomix = 1;
691 td->sequential = 1;
692 return 0;
693 } else if (!strncmp(mem, "randrw", 6)) {
694 td->ddir = 0;
695 td->iomix = 1;
696 td->sequential = 0;
697 return 0;
698 }
699
700 log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
701 return 1;
702}
703
704static int str_verify_cb(void *data, char *mem)
705{
706 struct thread_data *td = data;
707
708 if (!strncmp(mem, "0", 1)) {
709 td->verify = VERIFY_NONE;
710 return 0;
711 } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
712 td->verify = VERIFY_MD5;
713 return 0;
714 } else if (!strncmp(mem, "crc32", 5)) {
715 td->verify = VERIFY_CRC32;
716 return 0;
717 }
718
719 log_err("fio: verify types: md5, crc32\n");
720 return 1;
721}
722
723static int str_mem_cb(void *data, char *mem)
724{
725 struct thread_data *td = data;
726
727 if (!strncmp(mem, "malloc", 6)) {
728 td->mem_type = MEM_MALLOC;
729 return 0;
730 } else if (!strncmp(mem, "shm", 3)) {
731 td->mem_type = MEM_SHM;
732 return 0;
733 } else if (!strncmp(mem, "mmap", 4)) {
734 td->mem_type = MEM_MMAP;
735 return 0;
736 }
737
738 log_err("fio: mem type: malloc, shm, mmap\n");
739 return 1;
740}
741
742static int str_ioengine_cb(void *data, char *str)
743{
744 struct thread_data *td = data;
745
746 td->io_ops = load_ioengine(td, str);
747 if (td->io_ops)
748 return 0;
749
750 log_err("fio: ioengine: { linuxaio, aio, libaio }, posixaio, sync, mmap, sgio, splice, cpu\n");
751 return 1;
752}
753
754static int str_lockmem_cb(void fio_unused *data, unsigned long *val)
755{
756 mlock_size = *val;
757 return 0;
758}
759
760static int str_prioclass_cb(void *data, unsigned int *val)
761{
762 struct thread_data *td = data;
763
764 td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
765 return 0;
766}
767
768static int str_prio_cb(void *data, unsigned int *val)
769{
770 struct thread_data *td = data;
771
772 td->ioprio |= *val;
773 return 0;
774}
775
776static int str_exitall_cb(void)
777{
778 exitall_on_terminate = 1;
779 return 0;
780}
781
782static int str_cpumask_cb(void *data, unsigned int *val)
783{
784 struct thread_data *td = data;
785
786 fill_cpu_mask(td->cpumask, *val);
787 return 0;
788}
789
790/*
791 * This is our [ini] type file parser.
792 */
793int parse_jobs_ini(char *file, int stonewall_flag)
794{
795 unsigned int global;
796 struct thread_data *td;
797 char *string, *name, *tmpbuf;
798 fpos_t off;
799 FILE *f;
800 char *p;
801 int ret = 0, stonewall;
802
803 f = fopen(file, "r");
804 if (!f) {
805 perror("fopen job file");
806 return 1;
807 }
808
809 string = malloc(4096);
810 name = malloc(256);
811 tmpbuf = malloc(4096);
812
813 stonewall = stonewall_flag;
814 while ((p = fgets(string, 4096, f)) != NULL) {
815 if (ret)
816 break;
817 if (is_empty_or_comment(p))
818 continue;
819 if (sscanf(p, "[%s]", name) != 1)
820 continue;
821
822 global = !strncmp(name, "global", 6);
823
824 name[strlen(name) - 1] = '\0';
825
826 td = get_new_job(global, &def_thread);
827 if (!td) {
828 ret = 1;
829 break;
830 }
831
832 /*
833 * Seperate multiple job files by a stonewall
834 */
835 if (!global && stonewall) {
836 td->stonewall = stonewall;
837 stonewall = 0;
838 }
839
840 fgetpos(f, &off);
841 while ((p = fgets(string, 4096, f)) != NULL) {
842 if (is_empty_or_comment(p))
843 continue;
844 if (strstr(p, "["))
845 break;
846
847 strip_blank_front(&p);
848 strip_blank_end(p);
849
850 fgetpos(f, &off);
851
852 /*
853 * Don't break here, continue parsing options so we
854 * dump all the bad ones. Makes trial/error fixups
855 * easier on the user.
856 */
857 ret = parse_option(p, options, td);
858 }
859
860 if (!ret) {
861 fsetpos(f, &off);
862 ret = add_job(td, name, 0);
863 }
864 if (ret)
865 break;
866 }
867
868 free(string);
869 free(name);
870 free(tmpbuf);
871 fclose(f);
872 return ret;
873}
874
875static int fill_def_thread(void)
876{
877 memset(&def_thread, 0, sizeof(def_thread));
878
879 if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
880 perror("sched_getaffinity");
881 return 1;
882 }
883
884 /*
885 * fill globals
886 */
887 def_thread.ddir = DDIR_READ;
888 def_thread.iomix = 0;
889 def_thread.bs = DEF_BS;
890 def_thread.min_bs = -1;
891 def_thread.max_bs = -1;
892 def_thread.odirect = DEF_ODIRECT;
893 def_thread.ratecycle = DEF_RATE_CYCLE;
894 def_thread.sequential = DEF_SEQUENTIAL;
895 def_thread.timeout = def_timeout;
896 def_thread.overwrite = DEF_OVERWRITE;
897 def_thread.invalidate_cache = DEF_INVALIDATE;
898 def_thread.sync_io = DEF_SYNCIO;
899 def_thread.mem_type = MEM_MALLOC;
900 def_thread.bw_avg_time = DEF_BWAVGTIME;
901 def_thread.create_serialize = DEF_CREATE_SER;
902 def_thread.create_fsync = DEF_CREATE_FSYNC;
903 def_thread.loops = DEF_LOOPS;
904 def_thread.verify = DEF_VERIFY;
905 def_thread.stonewall = DEF_STONEWALL;
906 def_thread.numjobs = DEF_NUMJOBS;
907 def_thread.use_thread = DEF_USE_THREAD;
908 def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
909 def_thread.rwmixread = DEF_RWMIX_READ;
910 def_thread.nice = DEF_NICE;
911 def_thread.rand_repeatable = DEF_RAND_REPEAT;
912 def_thread.nr_files = DEF_NR_FILES;
913 def_thread.unlink = DEF_UNLINK;
914 def_thread.write_bw_log = write_bw_log;
915 def_thread.write_lat_log = write_lat_log;
916#ifdef FIO_HAVE_DISK_UTIL
917 def_thread.do_disk_util = 1;
918#endif
919
920 return 0;
921}
922
923static void usage(void)
924{
925 printf("%s\n", fio_version_string);
926 printf("\t-o Write output to file\n");
927 printf("\t-t Runtime in seconds\n");
928 printf("\t-l Generate per-job latency logs\n");
929 printf("\t-w Generate per-job bandwidth logs\n");
930 printf("\t-m Minimal (terse) output\n");
931 printf("\t-v Print version info and exit\n");
932}
933
934static int parse_cmd_line(int argc, char *argv[])
935{
936 int c, idx = 1, ini_idx = 0;
937
938 while ((c = getopt(argc, argv, "t:o:lwvhm")) != EOF) {
939 switch (c) {
940 case 't':
941 def_timeout = atoi(optarg);
942 idx = optind;
943 break;
944 case 'l':
945 write_lat_log = 1;
946 idx = optind;
947 break;
948 case 'w':
949 write_bw_log = 1;
950 idx = optind;
951 break;
952 case 'o':
953 f_out = fopen(optarg, "w+");
954 if (!f_out) {
955 perror("fopen output");
956 exit(1);
957 }
958 f_err = f_out;
959 idx = optind;
960 break;
961 case 'm':
962 terse_output = 1;
963 idx = optind;
964 break;
965 case 'h':
966 usage();
967 exit(0);
968 case 'v':
969 printf("%s\n", fio_version_string);
970 exit(0);
971 }
972 }
973
974 while (idx < argc) {
975 ini_idx++;
976 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
977 ini_file[ini_idx - 1] = strdup(argv[idx]);
978 idx++;
979 }
980
981 if (!f_out) {
982 f_out = stdout;
983 f_err = stderr;
984 }
985
986 return ini_idx;
987}
988
989static void free_shm(void)
990{
991 struct shmid_ds sbuf;
992
993 if (threads) {
994 shmdt((void *) threads);
995 threads = NULL;
996 shmctl(shm_id, IPC_RMID, &sbuf);
997 }
998}
999
1000/*
1001 * The thread area is shared between the main process and the job
1002 * threads/processes. So setup a shared memory segment that will hold
1003 * all the job info.
1004 */
1005static int setup_thread_area(void)
1006{
1007 /*
1008 * 1024 is too much on some machines, scale max_jobs if
1009 * we get a failure that looks like too large a shm segment
1010 */
1011 do {
1012 size_t size = max_jobs * sizeof(struct thread_data);
1013
1014 shm_id = shmget(0, size, IPC_CREAT | 0600);
1015 if (shm_id != -1)
1016 break;
1017 if (errno != EINVAL) {
1018 perror("shmget");
1019 break;
1020 }
1021
1022 max_jobs >>= 1;
1023 } while (max_jobs);
1024
1025 if (shm_id == -1)
1026 return 1;
1027
1028 threads = shmat(shm_id, NULL, 0);
1029 if (threads == (void *) -1) {
1030 perror("shmat");
1031 return 1;
1032 }
1033
1034 atexit(free_shm);
1035 return 0;
1036}
1037
1038int parse_options(int argc, char *argv[])
1039{
1040 int job_files, i;
1041
1042 if (setup_thread_area())
1043 return 1;
1044 if (fill_def_thread())
1045 return 1;
1046
1047 job_files = parse_cmd_line(argc, argv);
1048 if (!job_files) {
1049 log_err("Need job file(s)\n");
1050 usage();
1051 return 1;
1052 }
1053
1054 for (i = 0; i < job_files; i++) {
1055 if (fill_def_thread())
1056 return 1;
1057 if (parse_jobs_ini(ini_file[i], i))
1058 return 1;
1059 free(ini_file[i]);
1060 }
1061
1062 free(ini_file);
1063 return 0;
1064}
fio - Flexible IO Tester