2 * This file contains job initialization and setup functions.
15 #include <sys/types.h>
21 #define FIO_RANDSEED (0xb1899bedUL)
23 #define td_var_offset(var) ((size_t) &((struct thread_data *)0)->var)
25 static int str_rw_cb(void *, const char *);
26 static int str_ioengine_cb(void *, const char *);
27 static int str_mem_cb(void *, const char *);
28 static int str_verify_cb(void *, const char *);
29 static int str_lockmem_cb(void *, unsigned long *);
30 #ifdef FIO_HAVE_IOPRIO
31 static int str_prio_cb(void *, unsigned int *);
32 static int str_prioclass_cb(void *, unsigned int *);
34 static int str_exitall_cb(void);
35 static int str_cpumask_cb(void *, unsigned int *);
36 static int str_file_service_cb(void *, const char *);
38 #define __stringify_1(x) #x
39 #define __stringify(x) __stringify_1(x)
42 * Map of job/command line options
44 static struct fio_option options[] = {
46 .name = "description",
47 .type = FIO_OPT_STR_STORE,
48 .off1 = td_var_offset(description),
49 .help = "Text job description",
53 .type = FIO_OPT_STR_STORE,
54 .off1 = td_var_offset(name),
55 .help = "Name of this job",
59 .type = FIO_OPT_STR_STORE,
60 .off1 = td_var_offset(directory),
61 .help = "Directory to store files in",
65 .type = FIO_OPT_STR_STORE,
66 .off1 = td_var_offset(filename),
67 .help = "Force the use of a specific file",
73 .help = "IO direction",
75 .posval = { "read", "write", "randwrite", "randread", "rw",
81 .cb = str_ioengine_cb,
82 .help = "IO engine to use",
84 .posval = { "sync", "libaio", "posixaio", "mmap", "splice",
85 "sg", "null", "net", "syslet-rw" },
90 .off1 = td_var_offset(iodepth),
91 .help = "Amount of IO buffers to keep in flight",
95 .name = "iodepth_low",
97 .off1 = td_var_offset(iodepth_low),
98 .help = "Low water mark for queuing depth",
102 .type = FIO_OPT_STR_VAL,
103 .off1 = td_var_offset(total_file_size),
104 .help = "Size of device or file",
108 .type = FIO_OPT_STR_VAL_INT,
109 .off1 = td_var_offset(bs[DDIR_READ]),
110 .off2 = td_var_offset(bs[DDIR_WRITE]),
111 .help = "Block size unit",
116 .type = FIO_OPT_RANGE,
117 .off1 = td_var_offset(min_bs[DDIR_READ]),
118 .off2 = td_var_offset(max_bs[DDIR_READ]),
119 .off3 = td_var_offset(min_bs[DDIR_WRITE]),
120 .off4 = td_var_offset(max_bs[DDIR_WRITE]),
121 .help = "Set block size range (in more detail than bs)",
124 .name = "bs_unaligned",
125 .type = FIO_OPT_STR_SET,
126 .off1 = td_var_offset(bs_unaligned),
127 .help = "Don't sector align IO buffer sizes",
131 .type = FIO_OPT_STR_VAL,
132 .off1 = td_var_offset(start_offset),
133 .help = "Start IO from this offset",
137 .name = "randrepeat",
138 .type = FIO_OPT_BOOL,
139 .off1 = td_var_offset(rand_repeatable),
140 .help = "Use repeatable random IO pattern",
144 .name = "norandommap",
145 .type = FIO_OPT_STR_SET,
146 .off1 = td_var_offset(norandommap),
147 .help = "Accept potential duplicate random blocks",
152 .off1 = td_var_offset(nr_files),
153 .help = "Split job workload between this number of files",
157 .name = "file_service_type",
159 .cb = str_file_service_cb,
160 .help = "How to select which file to service next",
162 .posval = { "random", "roundrobin" },
167 .off1 = td_var_offset(fsync_blocks),
168 .help = "Issue fsync for writes every given number of blocks",
173 .type = FIO_OPT_BOOL,
174 .off1 = td_var_offset(odirect),
175 .help = "Use O_DIRECT IO (negates buffered)",
180 .type = FIO_OPT_BOOL,
181 .off1 = td_var_offset(odirect),
183 .help = "Use buffered IO (negates direct)",
188 .type = FIO_OPT_BOOL,
189 .off1 = td_var_offset(overwrite),
190 .help = "When writing, set whether to overwrite current data",
196 .off1 = td_var_offset(loops),
197 .help = "Number of times to run the job",
203 .off1 = td_var_offset(numjobs),
204 .help = "Duplicate this job this many times",
208 .name = "startdelay",
210 .off1 = td_var_offset(start_delay),
211 .help = "Only start job when this period has passed",
217 .type = FIO_OPT_STR_VAL_TIME,
218 .off1 = td_var_offset(timeout),
219 .help = "Stop workload when this amount of time has passed",
226 .help = "Backing type for IO buffers",
228 .posval = { "malloc", "shm", "shmhuge", "mmap", "mmaphuge", },
234 .help = "Verify sum function",
236 .posval = { "crc32", "md5", },
239 .name = "write_iolog",
240 .type = FIO_OPT_STR_STORE,
241 .off1 = td_var_offset(write_iolog_file),
242 .help = "Store IO pattern to file",
245 .name = "read_iolog",
246 .type = FIO_OPT_STR_STORE,
247 .off1 = td_var_offset(read_iolog_file),
248 .help = "Playback IO pattern from file",
251 .name = "exec_prerun",
252 .type = FIO_OPT_STR_STORE,
253 .off1 = td_var_offset(exec_prerun),
254 .help = "Execute this file prior to running job",
257 .name = "exec_postrun",
258 .type = FIO_OPT_STR_STORE,
259 .off1 = td_var_offset(exec_postrun),
260 .help = "Execute this file after running job",
262 #ifdef FIO_HAVE_IOSCHED_SWITCH
264 .name = "ioscheduler",
265 .type = FIO_OPT_STR_STORE,
266 .off1 = td_var_offset(ioscheduler),
267 .help = "Use this IO scheduler on the backing device",
272 .type = FIO_OPT_STR_VAL,
273 .off1 = td_var_offset(zone_size),
274 .help = "Give size of an IO zone",
279 .type = FIO_OPT_STR_VAL,
280 .off1 = td_var_offset(zone_skip),
281 .help = "Space between IO zones",
286 .type = FIO_OPT_STR_VAL,
287 .cb = str_lockmem_cb,
288 .help = "Lock down this amount of memory",
292 .name = "rwmixcycle",
294 .off1 = td_var_offset(rwmixcycle),
295 .help = "Cycle period for mixed read/write workloads (msec)",
301 .off1 = td_var_offset(rwmixread),
303 .help = "Percentage of mixed workload that is reads",
307 .name = "rwmixwrite",
309 .off1 = td_var_offset(rwmixwrite),
311 .help = "Percentage of mixed workload that is writes",
317 .off1 = td_var_offset(nice),
318 .help = "Set job CPU nice value",
323 #ifdef FIO_HAVE_IOPRIO
328 .help = "Set job IO priority value",
335 .cb = str_prioclass_cb,
336 .help = "Set job IO priority class",
344 .off1 = td_var_offset(thinktime),
345 .help = "Idle time between IO buffers (usec)",
349 .name = "thinktime_spin",
351 .off1 = td_var_offset(thinktime_spin),
352 .help = "Start thinktime by spinning this amount (usec)",
356 .name = "thinktime_blocks",
358 .off1 = td_var_offset(thinktime_blocks),
359 .help = "IO buffer period between 'thinktime'",
365 .off1 = td_var_offset(rate),
366 .help = "Set bandwidth rate",
371 .off1 = td_var_offset(ratemin),
372 .help = "The bottom limit accepted",
377 .off1 = td_var_offset(ratecycle),
378 .help = "Window average for rate limits (msec)",
382 .name = "invalidate",
383 .type = FIO_OPT_BOOL,
384 .off1 = td_var_offset(invalidate_cache),
385 .help = "Invalidate buffer/page cache prior to running job",
390 .type = FIO_OPT_BOOL,
391 .off1 = td_var_offset(sync_io),
392 .help = "Use O_SYNC for buffered writes",
398 .off1 = td_var_offset(bw_avg_time),
399 .help = "Time window over which to calculate bandwidth (msec)",
403 .name = "create_serialize",
404 .type = FIO_OPT_BOOL,
405 .off1 = td_var_offset(create_serialize),
406 .help = "Serialize creating of job files",
410 .name = "create_fsync",
411 .type = FIO_OPT_BOOL,
412 .off1 = td_var_offset(create_fsync),
413 .help = "Fsync file after creation",
419 .off1 = td_var_offset(cpuload),
420 .help = "Use this percentage of CPU",
425 .off1 = td_var_offset(cpucycle),
426 .help = "Length of the CPU burn cycles",
428 #ifdef FIO_HAVE_CPU_AFFINITY
432 .cb = str_cpumask_cb,
433 .help = "CPU affinity mask",
438 .type = FIO_OPT_BOOL,
439 .off1 = td_var_offset(end_fsync),
440 .help = "Include fsync at the end of job",
445 .type = FIO_OPT_BOOL,
446 .off1 = td_var_offset(unlink),
447 .help = "Unlink created files after job has completed",
452 .type = FIO_OPT_STR_SET,
453 .cb = str_exitall_cb,
454 .help = "Terminate all jobs when one exits",
458 .type = FIO_OPT_STR_SET,
459 .off1 = td_var_offset(stonewall),
460 .help = "Insert a hard barrier between this job and previous",
464 .type = FIO_OPT_STR_SET,
465 .off1 = td_var_offset(use_thread),
466 .help = "Use threads instead of forks",
469 .name = "write_bw_log",
470 .type = FIO_OPT_STR_SET,
471 .off1 = td_var_offset(write_bw_log),
472 .help = "Write log of bandwidth during run",
475 .name = "write_lat_log",
476 .type = FIO_OPT_STR_SET,
477 .off1 = td_var_offset(write_lat_log),
478 .help = "Write log of latency during run",
481 .name = "hugepage-size",
482 .type = FIO_OPT_STR_VAL,
483 .off1 = td_var_offset(hugepage_size),
484 .help = "When using hugepages, specify size of each page",
485 .def = __stringify(FIO_HUGE_PAGE),
492 #define FIO_JOB_OPTS (sizeof(options) / sizeof(struct fio_option))
493 #define FIO_CMD_OPTS (16)
494 #define FIO_GETOPT_JOB (0x89988998)
497 * Command line options. These will contain the above, plus a few
498 * extra that only pertain to fio itself and not jobs.
500 static struct option long_options[FIO_JOB_OPTS + FIO_CMD_OPTS] = {
503 .has_arg = required_argument,
508 .has_arg = required_argument,
512 .name = "latency-log",
513 .has_arg = required_argument,
517 .name = "bandwidth-log",
518 .has_arg = required_argument,
523 .has_arg = optional_argument,
528 .has_arg = no_argument,
533 .has_arg = no_argument,
538 .has_arg = required_argument,
546 static int def_timeout = 0;
548 static char fio_version_string[] = "fio 1.11";
550 static char **ini_file;
551 static int max_jobs = MAX_JOBS;
553 struct thread_data def_thread;
554 struct thread_data *threads = NULL;
556 int exitall_on_terminate = 0;
557 int terse_output = 0;
558 unsigned long long mlock_size = 0;
562 static int write_lat_log = 0;
563 int write_bw_log = 0;
566 * Return a free job structure.
568 static struct thread_data *get_new_job(int global, struct thread_data *parent)
570 struct thread_data *td;
574 if (thread_number >= max_jobs)
577 td = &threads[thread_number++];
580 td->thread_number = thread_number;
584 static void put_job(struct thread_data *td)
586 if (td == &def_thread)
590 fprintf(f_out, "fio: %s\n", td->verror);
592 memset(&threads[td->thread_number - 1], 0, sizeof(*td));
597 * Lazy way of fixing up options that depend on each other. We could also
598 * define option callback handlers, but this is easier.
600 static void fixup_options(struct thread_data *td)
602 if (!td->rwmixread && td->rwmixwrite)
603 td->rwmixread = 100 - td->rwmixwrite;
605 if (td->write_iolog_file && td->read_iolog_file) {
606 log_err("fio: read iolog overrides write_iolog\n");
607 free(td->write_iolog_file);
608 td->write_iolog_file = NULL;
611 if (td->io_ops->flags & FIO_SYNCIO)
615 td->iodepth = td->nr_files;
619 * only really works for sequential io for now, and with 1 file
621 if (td->zone_size && td_random(td) && td->nr_files == 1)
625 * Reads can do overwrites, we always need to pre-create the file
627 if (td_read(td) || td_rw(td))
630 if (!td->min_bs[DDIR_READ])
631 td->min_bs[DDIR_READ]= td->bs[DDIR_READ];
632 if (!td->max_bs[DDIR_READ])
633 td->max_bs[DDIR_READ] = td->bs[DDIR_READ];
634 if (!td->min_bs[DDIR_WRITE])
635 td->min_bs[DDIR_WRITE]= td->bs[DDIR_WRITE];
636 if (!td->max_bs[DDIR_WRITE])
637 td->max_bs[DDIR_WRITE] = td->bs[DDIR_WRITE];
639 td->rw_min_bs = min(td->min_bs[DDIR_READ], td->min_bs[DDIR_WRITE]);
641 if (td_read(td) && !td_rw(td))
644 if (td->norandommap && td->verify != VERIFY_NONE) {
645 log_err("fio: norandommap given, verify disabled\n");
646 td->verify = VERIFY_NONE;
648 if (td->bs_unaligned && (td->odirect || td->io_ops->flags & FIO_RAWIO))
649 log_err("fio: bs_unaligned may not work with raw io\n");
652 * O_DIRECT and char doesn't mix, clear that flag if necessary.
654 if (td->filetype == FIO_TYPE_CHAR && td->odirect)
658 * thinktime_spin must be less than thinktime
660 if (td->thinktime_spin > td->thinktime)
661 td->thinktime_spin = td->thinktime;
664 * The low water mark cannot be bigger than the iodepth
666 if (td->iodepth_low > td->iodepth || !td->iodepth_low)
667 td->iodepth_low = td->iodepth;
671 * This function leaks the buffer
673 static char *to_kmg(unsigned int val)
675 char *buf = malloc(32);
676 char post[] = { 0, 'K', 'M', 'G', 'P', 'E', 0 };
687 snprintf(buf, 31, "%u%c", val, *p);
692 * Adds a job to the list of things todo. Sanitizes the various options
693 * to make sure we don't have conflicts, and initializes various
696 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
698 const char *ddir_str[] = { NULL, "read", "write", "rw", NULL,
699 "randread", "randwrite", "randrw" };
705 * the def_thread is just for options, it's not a real job
707 if (td == &def_thread)
713 td->io_ops->flags |= FIO_RAWIO;
715 td->filetype = FIO_TYPE_FILE;
716 if (td->filename && !lstat(td->filename, &sb)) {
717 if (S_ISBLK(sb.st_mode))
718 td->filetype = FIO_TYPE_BD;
719 else if (S_ISCHR(sb.st_mode))
720 td->filetype = FIO_TYPE_CHAR;
726 td->nr_uniq_files = 1;
728 td->nr_uniq_files = td->nr_files;
730 if (td->filetype == FIO_TYPE_FILE || td->filename) {
734 if (td->directory && td->directory[0] != '\0') {
735 if (lstat(td->directory, &sb) < 0) {
736 log_err("fio: %s is not a directory\n", td->directory);
737 td_verror(td, errno, "lstat");
740 if (!S_ISDIR(sb.st_mode)) {
741 log_err("fio: %s is not a directory\n", td->directory);
744 len = sprintf(tmp, "%s/", td->directory);
747 td->files = malloc(sizeof(struct fio_file) * td->nr_files);
749 for_each_file(td, f, i) {
750 memset(f, 0, sizeof(*f));
754 sprintf(tmp + len, "%s", td->filename);
756 sprintf(tmp + len, "%s.%d.%d", jobname, td->thread_number, i);
757 f->file_name = strdup(tmp);
761 td->files = malloc(sizeof(struct fio_file));
764 memset(f, 0, sizeof(*f));
766 f->file_name = strdup(jobname);
769 for_each_file(td, f, i) {
770 f->file_size = td->total_file_size / td->nr_files;
771 f->file_offset = td->start_offset;
774 fio_sem_init(&td->mutex, 0);
776 td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
777 td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
778 td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
780 if (td->stonewall && td->thread_number > 1)
783 td->groupid = groupid;
788 if (td->write_lat_log) {
789 setup_log(&td->ts.slat_log);
790 setup_log(&td->ts.clat_log);
792 if (td->write_bw_log)
793 setup_log(&td->ts.bw_log);
796 td->name = strdup(jobname);
800 if (td->io_ops->flags & FIO_CPUIO)
801 fprintf(f_out, "%s: ioengine=cpu, cpuload=%u, cpucycle=%u\n", td->name, td->cpuload, td->cpucycle);
803 char *c1, *c2, *c3, *c4;
805 c1 = to_kmg(td->min_bs[DDIR_READ]);
806 c2 = to_kmg(td->max_bs[DDIR_READ]);
807 c3 = to_kmg(td->min_bs[DDIR_WRITE]);
808 c4 = to_kmg(td->max_bs[DDIR_WRITE]);
810 fprintf(f_out, "%s: (g=%d): rw=%s, bs=%s-%s/%s-%s, ioengine=%s, iodepth=%u\n", td->name, td->groupid, ddir_str[td->td_ddir], c1, c2, c3, c4, td->io_ops->name, td->iodepth);
817 } else if (job_add_num == 1)
818 fprintf(f_out, "...\n");
822 * recurse add identical jobs, clear numjobs and stonewall options
823 * as they don't apply to sub-jobs
825 numjobs = td->numjobs;
827 struct thread_data *td_new = get_new_job(0, td);
833 td_new->stonewall = 0;
834 job_add_num = numjobs - 1;
836 if (add_job(td_new, jobname, job_add_num))
846 * Initialize the various random states we need (random io, block size ranges,
847 * read/write mix, etc).
849 int init_random_state(struct thread_data *td)
851 unsigned long seeds[5];
852 int fd, num_maps, blocks, i;
855 if (td->io_ops->flags & FIO_CPUIO)
858 fd = open("/dev/urandom", O_RDONLY);
860 td_verror(td, errno, "open");
864 if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
865 td_verror(td, EIO, "read");
872 os_random_seed(seeds[0], &td->bsrange_state);
873 os_random_seed(seeds[1], &td->verify_state);
874 os_random_seed(seeds[2], &td->rwmix_state);
876 if (td->file_service_type == FIO_FSERVICE_RANDOM)
877 os_random_seed(seeds[3], &td->next_file_state);
882 if (td->rand_repeatable)
883 seeds[4] = FIO_RANDSEED * td->thread_number;
885 if (!td->norandommap) {
886 for_each_file(td, f, i) {
887 blocks = (f->real_file_size + td->rw_min_bs - 1) / td->rw_min_bs;
888 num_maps = (blocks + BLOCKS_PER_MAP-1)/ BLOCKS_PER_MAP;
889 f->file_map = malloc(num_maps * sizeof(long));
890 f->num_maps = num_maps;
891 memset(f->file_map, 0, num_maps * sizeof(long));
895 os_random_seed(seeds[4], &td->random_state);
899 static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
901 #ifdef FIO_HAVE_CPU_AFFINITY
906 for (i = 0; i < sizeof(int) * 8; i++) {
908 CPU_SET(i, &cpumask);
913 static int is_empty_or_comment(char *line)
917 for (i = 0; i < strlen(line); i++) {
922 if (!isspace(line[i]) && !iscntrl(line[i]))
929 static int str_rw_cb(void *data, const char *mem)
931 struct thread_data *td = data;
933 if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
934 td->td_ddir = TD_DDIR_READ;
936 } else if (!strncmp(mem, "randread", 8)) {
937 td->td_ddir = TD_DDIR_READ | TD_DDIR_RAND;
939 } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
940 td->td_ddir = TD_DDIR_WRITE;
942 } else if (!strncmp(mem, "randwrite", 9)) {
943 td->td_ddir = TD_DDIR_WRITE | TD_DDIR_RAND;
945 } else if (!strncmp(mem, "rw", 2)) {
946 td->td_ddir = TD_DDIR_RW;
948 } else if (!strncmp(mem, "randrw", 6)) {
949 td->td_ddir = TD_DDIR_RW | TD_DDIR_RAND;
953 log_err("fio: data direction: read, write, randread, randwrite, rw, randrw\n");
957 static int str_verify_cb(void *data, const char *mem)
959 struct thread_data *td = data;
961 if (!strncmp(mem, "0", 1)) {
962 td->verify = VERIFY_NONE;
964 } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
965 td->verify = VERIFY_MD5;
967 } else if (!strncmp(mem, "crc32", 5)) {
968 td->verify = VERIFY_CRC32;
972 log_err("fio: verify types: md5, crc32\n");
977 * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
979 static char *get_mmap_file(const char *str)
981 char *p = strstr(str, ":");
987 strip_blank_front(&p);
992 static int str_mem_cb(void *data, const char *mem)
994 struct thread_data *td = data;
996 if (!strncmp(mem, "malloc", 6)) {
997 td->mem_type = MEM_MALLOC;
999 } else if (!strncmp(mem, "mmaphuge", 8)) {
1000 #ifdef FIO_HAVE_HUGETLB
1002 * mmaphuge must be appended with the actual file
1004 td->mmapfile = get_mmap_file(mem);
1005 if (!td->mmapfile) {
1006 log_err("fio: mmaphuge:/path/to/file\n");
1010 td->mem_type = MEM_MMAPHUGE;
1013 log_err("fio: mmaphuge not available\n");
1016 } else if (!strncmp(mem, "mmap", 4)) {
1018 * Check if the user wants file backed memory. It's ok
1019 * if there's no file given, we'll just use anon mamp then.
1021 td->mmapfile = get_mmap_file(mem);
1022 td->mem_type = MEM_MMAP;
1024 } else if (!strncmp(mem, "shmhuge", 7)) {
1025 #ifdef FIO_HAVE_HUGETLB
1026 td->mem_type = MEM_SHMHUGE;
1029 log_err("fio: shmhuge not available\n");
1032 } else if (!strncmp(mem, "shm", 3)) {
1033 td->mem_type = MEM_SHM;
1037 log_err("fio: mem type: malloc, shm, shmhuge, mmap, mmaphuge\n");
1041 static int str_ioengine_cb(void *data, const char *str)
1043 struct thread_data *td = data;
1045 td->io_ops = load_ioengine(td, str);
1049 log_err("fio: ioengine= libaio, posixaio, sync, syslet-rw, mmap, sgio, splice, cpu, null\n");
1050 log_err("fio: or specify path to dynamic ioengine module\n");
1054 static int str_lockmem_cb(void fio_unused *data, unsigned long *val)
1060 #ifdef FIO_HAVE_IOPRIO
1061 static int str_prioclass_cb(void *data, unsigned int *val)
1063 struct thread_data *td = data;
1065 td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
1069 static int str_prio_cb(void *data, unsigned int *val)
1071 struct thread_data *td = data;
1078 static int str_exitall_cb(void)
1080 exitall_on_terminate = 1;
1084 static int str_cpumask_cb(void *data, unsigned int *val)
1086 struct thread_data *td = data;
1088 fill_cpu_mask(td->cpumask, *val);
1092 static int str_file_service_cb(void *data, const char *str)
1094 struct thread_data *td = data;
1096 if (!strncmp(str, "random", 6)) {
1097 td->file_service_type = FIO_FSERVICE_RANDOM;
1099 } else if (!strncmp(str, "roundrobin", 10)) {
1100 td->file_service_type = FIO_FSERVICE_RR;
1104 log_err("fio: file_service= random, roundrobin\n");
1109 * This is our [ini] type file parser.
1111 static int parse_jobs_ini(char *file, int stonewall_flag)
1113 unsigned int global;
1114 struct thread_data *td;
1115 char *string, *name;
1119 int ret = 0, stonewall;
1121 f = fopen(file, "r");
1123 perror("fopen job file");
1127 string = malloc(4096);
1129 memset(name, 0, 256);
1131 stonewall = stonewall_flag;
1133 p = fgets(string, 4095, f);
1136 if (is_empty_or_comment(p))
1138 if (sscanf(p, "[%255s]", name) != 1)
1141 global = !strncmp(name, "global", 6);
1143 name[strlen(name) - 1] = '\0';
1145 td = get_new_job(global, &def_thread);
1152 * Seperate multiple job files by a stonewall
1154 if (!global && stonewall) {
1155 td->stonewall = stonewall;
1160 while ((p = fgets(string, 4096, f)) != NULL) {
1161 if (is_empty_or_comment(p))
1164 strip_blank_front(&p);
1174 * Don't break here, continue parsing options so we
1175 * dump all the bad ones. Makes trial/error fixups
1176 * easier on the user.
1178 ret |= parse_option(p, options, td);
1183 ret = add_job(td, name, 0);
1185 log_err("fio: job %s dropped\n", name);
1196 static int fill_def_thread(void)
1198 memset(&def_thread, 0, sizeof(def_thread));
1200 if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
1201 perror("sched_getaffinity");
1206 * fill default options
1208 fill_default_options(&def_thread, options);
1210 def_thread.timeout = def_timeout;
1211 def_thread.write_bw_log = write_bw_log;
1212 def_thread.write_lat_log = write_lat_log;
1214 #ifdef FIO_HAVE_DISK_UTIL
1215 def_thread.do_disk_util = 1;
1221 static void usage(void)
1223 printf("%s\n", fio_version_string);
1224 printf("\t--output\tWrite output to file\n");
1225 printf("\t--timeout\tRuntime in seconds\n");
1226 printf("\t--latency-log\tGenerate per-job latency logs\n");
1227 printf("\t--bandwidth-log\tGenerate per-job bandwidth logs\n");
1228 printf("\t--minimal\tMinimal (terse) output\n");
1229 printf("\t--version\tPrint version info and exit\n");
1230 printf("\t--help\t\tPrint this page\n");
1231 printf("\t--cmdhelp=cmd\tPrint command help, \"all\" for all of them\n");
1234 static int parse_cmd_line(int argc, char *argv[])
1236 struct thread_data *td = NULL;
1237 int c, ini_idx = 0, lidx, ret;
1239 while ((c = getopt_long(argc, argv, "", long_options, &lidx)) != -1) {
1242 def_timeout = atoi(optarg);
1251 f_out = fopen(optarg, "w+");
1253 perror("fopen output");
1265 ret = show_cmd_help(options, optarg);
1268 printf("%s\n", fio_version_string);
1270 case FIO_GETOPT_JOB: {
1271 const char *opt = long_options[lidx].name;
1274 if (!strncmp(opt, "name", 4) && td) {
1275 ret = add_job(td, td->name ?: "fio", 0);
1283 int global = !strncmp(val, "global", 6);
1285 td = get_new_job(global, &def_thread);
1290 ret = parse_cmd_option(opt, val, options, td);
1292 log_err("fio: job dropped\n");
1304 ret = add_job(td, td->name ?: "fio", 0);
1309 while (optind < argc) {
1311 ini_file = realloc(ini_file, ini_idx * sizeof(char *));
1312 ini_file[ini_idx - 1] = strdup(argv[optind]);
1319 static void free_shm(void)
1321 struct shmid_ds sbuf;
1324 shmdt((void *) threads);
1326 shmctl(shm_id, IPC_RMID, &sbuf);
1331 * The thread area is shared between the main process and the job
1332 * threads/processes. So setup a shared memory segment that will hold
1335 static int setup_thread_area(void)
1338 * 1024 is too much on some machines, scale max_jobs if
1339 * we get a failure that looks like too large a shm segment
1342 size_t size = max_jobs * sizeof(struct thread_data);
1344 shm_id = shmget(0, size, IPC_CREAT | 0600);
1347 if (errno != EINVAL) {
1358 threads = shmat(shm_id, NULL, 0);
1359 if (threads == (void *) -1) {
1369 * Copy the fio options into the long options map, so we mirror
1370 * job and cmd line options.
1372 static void dupe_job_options(void)
1374 struct fio_option *o;
1378 while (long_options[i].name)
1383 long_options[i].name = o->name;
1384 long_options[i].val = FIO_GETOPT_JOB;
1385 if (o->type == FIO_OPT_STR_SET)
1386 long_options[i].has_arg = no_argument;
1388 long_options[i].has_arg = required_argument;
1392 assert(i < FIO_JOB_OPTS + FIO_CMD_OPTS);
1396 int parse_options(int argc, char *argv[])
1403 options_init(options);
1407 if (setup_thread_area())
1409 if (fill_def_thread())
1412 job_files = parse_cmd_line(argc, argv);
1414 for (i = 0; i < job_files; i++) {
1415 if (fill_def_thread())
1417 if (parse_jobs_ini(ini_file[i], i))
1424 if (!thread_number) {
1425 log_err("No jobs defined(s)\n");