5c5a918312db06e3d39a251b08fac8197e746aef
[fio.git] / init.c
1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <unistd.h>
4 #include <fcntl.h>
5 #include <ctype.h>
6 #include <string.h>
7 #include <errno.h>
8 #include <sys/ipc.h>
9 #include <sys/shm.h>
10 #include <sys/types.h>
11 #include <sys/stat.h>
12
13 #include "fio.h"
14
15 #define DEF_BS                  (4096)
16 #define DEF_TIMEOUT             (0)
17 #define DEF_RATE_CYCLE          (1000)
18 #define DEF_ODIRECT             (1)
19 #define DEF_IO_ENGINE           (FIO_SYNCIO)
20 #define DEF_IO_ENGINE_NAME      "sync"
21 #define DEF_SEQUENTIAL          (1)
22 #define DEF_RAND_REPEAT         (1)
23 #define DEF_OVERWRITE           (1)
24 #define DEF_CREATE              (1)
25 #define DEF_INVALIDATE          (1)
26 #define DEF_SYNCIO              (0)
27 #define DEF_RANDSEED            (0xb1899bedUL)
28 #define DEF_BWAVGTIME           (500)
29 #define DEF_CREATE_SER          (1)
30 #define DEF_CREATE_FSYNC        (1)
31 #define DEF_LOOPS               (1)
32 #define DEF_VERIFY              (0)
33 #define DEF_STONEWALL           (0)
34 #define DEF_NUMJOBS             (1)
35 #define DEF_USE_THREAD          (0)
36 #define DEF_FILE_SIZE           (1024 * 1024 * 1024UL)
37 #define DEF_ZONE_SIZE           (0)
38 #define DEF_ZONE_SKIP           (0)
39 #define DEF_RWMIX_CYCLE         (500)
40 #define DEF_RWMIX_READ          (50)
41 #define DEF_NICE                (0)
42
43 static char fio_version_string[] = "fio 1.4";
44
45 static int repeatable = DEF_RAND_REPEAT;
46 static char *ini_file;
47 static int max_jobs = MAX_JOBS;
48
49 struct thread_data def_thread;
50 struct thread_data *threads = NULL;
51
52 int rate_quit = 0;
53 int write_lat_log = 0;
54 int write_bw_log = 0;
55 int exitall_on_terminate = 0;
56 unsigned long long mlock_size = 0;
57
58 static int setup_rate(struct thread_data *td)
59 {
60         int nr_reads_per_sec;
61
62         if (!td->rate)
63                 return 0;
64
65         if (td->rate < td->ratemin) {
66                 fprintf(stderr, "min rate larger than nominal rate\n");
67                 return -1;
68         }
69
70         nr_reads_per_sec = (td->rate * 1024) / td->min_bs;
71         td->rate_usec_cycle = 1000000 / nr_reads_per_sec;
72         td->rate_pending_usleep = 0;
73         return 0;
74 }
75
76 static void setup_log(struct io_log **log)
77 {
78         struct io_log *l = malloc(sizeof(*l));
79
80         l->nr_samples = 0;
81         l->max_samples = 1024;
82         l->log = malloc(l->max_samples * sizeof(struct io_sample));
83         *log = l;
84 }
85
86 void finish_log(struct thread_data *td, struct io_log *log, const char *name)
87 {
88         char file_name[256];
89         FILE *f;
90         unsigned int i;
91
92         snprintf(file_name, 200, "client%d_%s.log", td->thread_number, name);
93         f = fopen(file_name, "w");
94         if (!f) {
95                 perror("fopen log");
96                 return;
97         }
98
99         for (i = 0; i < log->nr_samples; i++)
100                 fprintf(f, "%lu, %lu, %u\n", log->log[i].time, log->log[i].val, log->log[i].ddir);
101
102         fclose(f);
103         free(log->log);
104         free(log);
105 }
106
107 static struct thread_data *get_new_job(int global, struct thread_data *parent)
108 {
109         struct thread_data *td;
110
111         if (global)
112                 return &def_thread;
113         if (thread_number >= max_jobs)
114                 return NULL;
115
116         td = &threads[thread_number++];
117         if (parent)
118                 *td = *parent;
119         else
120                 memset(td, 0, sizeof(*td));
121
122         td->fd = -1;
123         td->thread_number = thread_number;
124
125         td->ddir = parent->ddir;
126         td->ioprio = parent->ioprio;
127         td->sequential = parent->sequential;
128         td->bs = parent->bs;
129         td->min_bs = parent->min_bs;
130         td->max_bs = parent->max_bs;
131         td->odirect = parent->odirect;
132         td->thinktime = parent->thinktime;
133         td->fsync_blocks = parent->fsync_blocks;
134         td->start_delay = parent->start_delay;
135         td->timeout = parent->timeout;
136         td->io_engine = parent->io_engine;
137         td->create_file = parent->create_file;
138         td->overwrite = parent->overwrite;
139         td->invalidate_cache = parent->invalidate_cache;
140         td->file_size = parent->file_size;
141         td->file_offset = parent->file_offset;
142         td->zone_size = parent->zone_size;
143         td->zone_skip = parent->zone_skip;
144         td->rate = parent->rate;
145         td->ratemin = parent->ratemin;
146         td->ratecycle = parent->ratecycle;
147         td->iodepth = parent->iodepth;
148         td->sync_io = parent->sync_io;
149         td->mem_type = parent->mem_type;
150         td->bw_avg_time = parent->bw_avg_time;
151         td->create_serialize = parent->create_serialize;
152         td->create_fsync = parent->create_fsync;
153         td->loops = parent->loops;
154         td->verify = parent->verify;
155         td->stonewall = parent->stonewall;
156         td->numjobs = parent->numjobs;
157         td->use_thread = parent->use_thread;
158         td->do_disk_util = parent->do_disk_util;
159         memcpy(&td->cpumask, &parent->cpumask, sizeof(td->cpumask));
160         strcpy(td->io_engine_name, parent->io_engine_name);
161
162         return td;
163 }
164
165 static void put_job(struct thread_data *td)
166 {
167         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
168         thread_number--;
169 }
170
171 static int add_job(struct thread_data *td, const char *jobname, int job_add_num)
172 {
173         char *ddir_str[] = { "read", "write", "randread", "randwrite",
174                              "rw", NULL, "randrw" };
175         struct stat sb;
176         int numjobs, ddir;
177
178 #ifndef FIO_HAVE_LIBAIO
179         if (td->io_engine == FIO_LIBAIO) {
180                 fprintf(stderr, "Linux libaio not available\n");
181                 return 1;
182         }
183 #endif
184 #ifndef FIO_HAVE_POSIXAIO
185         if (td->io_engine == FIO_POSIXAIO) {
186                 fprintf(stderr, "posix aio not available\n");
187                 return 1;
188         }
189 #endif
190
191         /*
192          * the def_thread is just for options, it's not a real job
193          */
194         if (td == &def_thread)
195                 return 0;
196
197         if (td->io_engine & FIO_SYNCIO)
198                 td->iodepth = 1;
199         else {
200                 if (!td->iodepth)
201                         td->iodepth = 1;
202         }
203
204         /*
205          * only really works for sequential io for now
206          */
207         if (td->zone_size && !td->sequential)
208                 td->zone_size = 0;
209
210         td->filetype = FIO_TYPE_FILE;
211         if (!stat(jobname, &sb)) {
212                 if (S_ISBLK(sb.st_mode))
213                         td->filetype = FIO_TYPE_BD;
214                 else if (S_ISCHR(sb.st_mode))
215                         td->filetype = FIO_TYPE_CHAR;
216         }
217
218         if (td->filetype == FIO_TYPE_FILE) {
219                 if (td->directory && td->directory[0] != '\0')
220                         sprintf(td->file_name, "%s/%s.%d", td->directory, jobname, td->jobnum);
221                 else
222                         sprintf(td->file_name, "%s.%d", jobname, td->jobnum);
223         } else
224                 strncpy(td->file_name, jobname, sizeof(td->file_name) - 1);
225
226         sem_init(&td->mutex, 0, 0);
227
228         td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
229         td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
230         td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
231
232         if (td->min_bs == -1U)
233                 td->min_bs = td->bs;
234         if (td->max_bs == -1U)
235                 td->max_bs = td->bs;
236         if (td_read(td) && !td_rw(td))
237                 td->verify = 0;
238
239         if (td->stonewall && td->thread_number > 1)
240                 groupid++;
241
242         td->groupid = groupid;
243
244         if (setup_rate(td))
245                 goto err;
246
247         if (write_lat_log) {
248                 setup_log(&td->slat_log);
249                 setup_log(&td->clat_log);
250         }
251         if (write_bw_log)
252                 setup_log(&td->bw_log);
253
254         if (td->name[0] == '\0')
255                 snprintf(td->name, sizeof(td->name)-1, "client%d", td->thread_number);
256
257         ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
258
259         if (!job_add_num)
260                 printf("%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_engine_name, td->iodepth);
261         else if (job_add_num == 1)
262                 printf("...\n");
263
264         /*
265          * recurse add identical jobs, clear numjobs and stonewall options
266          * as they don't apply to sub-jobs
267          */
268         numjobs = td->numjobs;
269         while (--numjobs) {
270                 struct thread_data *td_new = get_new_job(0, td);
271
272                 if (!td_new)
273                         goto err;
274
275                 td_new->numjobs = 1;
276                 td_new->stonewall = 0;
277                 td_new->jobnum = numjobs;
278                 job_add_num = numjobs - 1;
279
280                 if (add_job(td_new, jobname, job_add_num))
281                         goto err;
282         }
283         return 0;
284 err:
285         put_job(td);
286         return -1;
287 }
288
289 int init_random_state(struct thread_data *td)
290 {
291         unsigned long seeds[4];
292         int fd, num_maps, blocks;
293
294         fd = open("/dev/urandom", O_RDONLY);
295         if (fd == -1) {
296                 td_verror(td, errno);
297                 return 1;
298         }
299
300         if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
301                 td_verror(td, EIO);
302                 close(fd);
303                 return 1;
304         }
305
306         close(fd);
307
308         srand48_r(seeds[0], &td->bsrange_state);
309         srand48_r(seeds[1], &td->verify_state);
310         srand48_r(seeds[2], &td->rwmix_state);
311
312         if (td->sequential)
313                 return 0;
314
315         if (repeatable)
316                 seeds[3] = DEF_RANDSEED;
317
318         blocks = (td->io_size + td->min_bs - 1) / td->min_bs;
319         num_maps = blocks / BLOCKS_PER_MAP;
320         td->file_map = malloc(num_maps * sizeof(long));
321         td->num_maps = num_maps;
322         memset(td->file_map, 0, num_maps * sizeof(long));
323
324         srand48_r(seeds[3], &td->random_state);
325         return 0;
326 }
327
328 static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
329 {
330 #ifdef FIO_HAVE_CPU_AFFINITY
331         unsigned int i;
332
333         CPU_ZERO(&cpumask);
334
335         for (i = 0; i < sizeof(int) * 8; i++) {
336                 if ((1 << i) & cpu)
337                         CPU_SET(i, &cpumask);
338         }
339 #endif
340 }
341
342 static unsigned long get_mult(char c)
343 {
344         switch (c) {
345                 case 'k':
346                 case 'K':
347                         return 1024;
348                 case 'm':
349                 case 'M':
350                         return 1024 * 1024;
351                 case 'g':
352                 case 'G':
353                         return 1024 * 1024 * 1024;
354                 default:
355                         return 1;
356         }
357 }
358
359 /*
360  * convert string after '=' into decimal value, noting any size suffix
361  */
362 static int str_cnv(char *p, unsigned long long *val)
363 {
364         char *str;
365         int len;
366
367         str = strchr(p, '=');
368         if (!str)
369                 return 1;
370
371         str++;
372         len = strlen(str);
373
374         *val = strtoul(str, NULL, 10);
375         if (*val == ULONG_MAX && errno == ERANGE)
376                 return 1;
377
378         *val *= get_mult(str[len - 1]);
379         return 0;
380 }
381
382 static int check_strcnv(char *p, char *name, unsigned long long *val)
383 {
384         if (strncmp(p, name, strlen(name) - 1))
385                 return 1;
386
387         return str_cnv(p, val);
388 }
389
390 static void strip_blank_front(char **p)
391 {
392         char *s = *p;
393
394         while (isspace(*s))
395                 s++;
396 }
397
398 static void strip_blank_end(char *p)
399 {
400         char *s = p + strlen(p) - 1;
401
402         while (isspace(*s) || iscntrl(*s))
403                 s--;
404
405         *(s + 1) = '\0';
406 }
407
408 typedef int (str_cb_fn)(struct thread_data *, char *);
409
410 static int check_str(char *p, char *name, str_cb_fn *cb, struct thread_data *td)
411 {
412         char *s;
413
414         if (strncmp(p, name, strlen(name)))
415                 return 1;
416
417         s = strstr(p, name);
418         if (!s)
419                 return 1;
420
421         s = strchr(s, '=');
422         if (!s)
423                 return 1;
424
425         s++;
426         strip_blank_front(&s);
427         return cb(td, s);
428 }
429
430 static int check_strstore(char *p, char *name, char *dest)
431 {
432         char *s;
433
434         if (strncmp(p, name, strlen(name)))
435                 return 1;
436
437         s = strstr(p, name);
438         if (!s)
439                 return 1;
440
441         s = strchr(p, '=');
442         if (!s)
443                 return 1;
444
445         s++;
446         strip_blank_front(&s);
447
448         strcpy(dest, s);
449         return 0;
450 }
451
452 static int __check_range(char *str, unsigned long *val)
453 {
454         char suffix;
455
456         if (sscanf(str, "%lu%c", val, &suffix) == 2) {
457                 *val *= get_mult(suffix);
458                 return 0;
459         }
460
461         if (sscanf(str, "%lu", val) == 1)
462                 return 0;
463
464         return 1;
465 }
466
467 static int check_range(char *p, char *name, unsigned long *s, unsigned long *e)
468 {
469         char option[128];
470         char *str, *p1, *p2;
471
472         if (strncmp(p, name, strlen(name)))
473                 return 1;
474
475         strcpy(option, p);
476         p = option;
477
478         str = strstr(p, name);
479         if (!str)
480                 return 1;
481
482         p += strlen(name);
483
484         str = strchr(p, '=');
485         if (!str)
486                 return 1;
487
488         /*
489          * 'p' now holds whatever is after the '=' sign
490          */
491         p1 = str + 1;
492
493         /*
494          * terminate p1 at the '-' sign
495          */
496         p = strchr(p1, '-');
497         if (!p)
498                 return 1;
499
500         p2 = p + 1;
501         *p = '\0';
502
503         if (!__check_range(p1, s) && !__check_range(p2, e))
504                 return 0;
505
506         return 1;
507 }
508
509 static int check_int(char *p, char *name, unsigned int *val)
510 {
511         char *str;
512
513         if (strncmp(p, name, strlen(name)))
514                 return 1;
515
516         str = strstr(p, name);
517         if (!str)
518                 return 1;
519
520         str = strchr(p, '=');
521         if (!str)
522                 return 1;
523
524         str++;
525
526         if (sscanf(str, "%u", val) == 1)
527                 return 0;
528
529         return 1;
530 }
531
532 static int check_strset(char *p, char *name)
533 {
534         return strncmp(p, name, strlen(name));
535 }
536
537 static int is_empty_or_comment(char *line)
538 {
539         unsigned int i;
540
541         for (i = 0; i < strlen(line); i++) {
542                 if (line[i] == ';')
543                         return 1;
544                 if (!isspace(line[i]) && !iscntrl(line[i]))
545                         return 0;
546         }
547
548         return 1;
549 }
550
551 static int str_rw_cb(struct thread_data *td, char *mem)
552 {
553         if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
554                 td->ddir = DDIR_READ;
555                 td->sequential = 1;
556                 return 0;
557         } else if (!strncmp(mem, "randread", 8)) {
558                 td->ddir = DDIR_READ;
559                 td->sequential = 0;
560                 return 0;
561         } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
562                 td->ddir = DDIR_WRITE;
563                 td->sequential = 1;
564                 return 0;
565         } else if (!strncmp(mem, "randwrite", 9)) {
566                 td->ddir = DDIR_WRITE;
567                 td->sequential = 0;
568                 return 0;
569         } else if (!strncmp(mem, "rw", 2)) {
570                 td->ddir = 0;
571                 td->iomix = 1;
572                 td->sequential = 1;
573                 return 0;
574         } else if (!strncmp(mem, "randrw", 6)) {
575                 td->ddir = 0;
576                 td->iomix = 1;
577                 td->sequential = 0;
578                 return 0;
579         }
580
581         fprintf(stderr, "bad data direction: %s\n", mem);
582         return 1;
583 }
584
585 static int str_verify_cb(struct thread_data *td, char *mem)
586 {
587         if (!strncmp(mem, "0", 1)) {
588                 td->verify = VERIFY_NONE;
589                 return 0;
590         } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
591                 td->verify = VERIFY_MD5;
592                 return 0;
593         } else if (!strncmp(mem, "crc32", 5)) {
594                 td->verify = VERIFY_CRC32;
595                 return 0;
596         }
597
598         fprintf(stderr, "bad verify type: %s\n", mem);
599         return 1;
600 }
601
602 static int str_mem_cb(struct thread_data *td, char *mem)
603 {
604         if (!strncmp(mem, "malloc", 6)) {
605                 td->mem_type = MEM_MALLOC;
606                 return 0;
607         } else if (!strncmp(mem, "shm", 3)) {
608                 td->mem_type = MEM_SHM;
609                 return 0;
610         } else if (!strncmp(mem, "mmap", 4)) {
611                 td->mem_type = MEM_MMAP;
612                 return 0;
613         }
614
615         fprintf(stderr, "bad mem type: %s\n", mem);
616         return 1;
617 }
618
619 static int str_ioengine_cb(struct thread_data *td, char *str)
620 {
621         if (!strncmp(str, "linuxaio", 8) || !strncmp(str, "aio", 3) ||
622             !strncmp(str, "libaio", 6)) {
623                 strcpy(td->io_engine_name, "libaio");
624                 td->io_engine = FIO_LIBAIO;
625                 return 0;
626         } else if (!strncmp(str, "posixaio", 8)) {
627                 strcpy(td->io_engine_name, "posixaio");
628                 td->io_engine = FIO_POSIXAIO;
629                 return 0;
630         } else if (!strncmp(str, "sync", 4)) {
631                 strcpy(td->io_engine_name, "sync");
632                 td->io_engine = FIO_SYNCIO;
633                 return 0;
634         } else if (!strncmp(str, "mmap", 4)) {
635                 strcpy(td->io_engine_name, "mmap");
636                 td->io_engine = FIO_MMAPIO;
637                 return 0;
638         } else if (!strncmp(str, "sgio", 4)) {
639                 strcpy(td->io_engine_name, "sgio");
640                 td->io_engine = FIO_SGIO;
641                 return 0;
642         } else if (!strncmp(str, "splice", 6)) {
643                 strcpy(td->io_engine_name, "splice");
644                 td->io_engine = FIO_SPLICEIO;
645                 return 0;
646         }
647
648         fprintf(stderr, "bad ioengine type: %s\n", str);
649         return 1;
650 }
651
652 int parse_jobs_ini(char *file)
653 {
654         unsigned int prioclass, prio, cpu, global, il;
655         unsigned long long ull;
656         unsigned long ul1, ul2;
657         struct thread_data *td;
658         char *string, *name, *tmpbuf;
659         fpos_t off;
660         FILE *f;
661         char *p;
662
663         f = fopen(file, "r");
664         if (!f) {
665                 perror("fopen job file");
666                 return 1;
667         }
668
669         string = malloc(4096);
670         name = malloc(256);
671         tmpbuf = malloc(4096);
672
673         while ((p = fgets(string, 4096, f)) != NULL) {
674                 if (is_empty_or_comment(p))
675                         continue;
676                 if (sscanf(p, "[%s]", name) != 1)
677                         continue;
678
679                 global = !strncmp(name, "global", 6);
680
681                 name[strlen(name) - 1] = '\0';
682
683                 td = get_new_job(global, &def_thread);
684                 if (!td)
685                         return 1;
686
687                 fgetpos(f, &off);
688                 while ((p = fgets(string, 4096, f)) != NULL) {
689                         if (is_empty_or_comment(p))
690                                 continue;
691                         if (strstr(p, "["))
692                                 break;
693                         strip_blank_front(&p);
694                         strip_blank_end(p);
695
696                         if (!check_int(p, "prio", &prio)) {
697 #ifndef FIO_HAVE_IOPRIO
698                                 fprintf(stderr, "io priorities not available\n");
699                                 return 1;
700 #endif
701                                 td->ioprio |= prio;
702                                 fgetpos(f, &off);
703                                 continue;
704                         }
705                         if (!check_int(p, "prioclass", &prioclass)) {
706 #ifndef FIO_HAVE_IOPRIO
707                                 fprintf(stderr, "io priorities not available\n");
708                                 return 1;
709 #endif
710                                 td->ioprio |= prioclass << IOPRIO_CLASS_SHIFT;
711                                 fgetpos(f, &off);
712                                 continue;
713                         }
714                         if (!check_int(p, "direct", &td->odirect)) {
715                                 fgetpos(f, &off);
716                                 continue;
717                         }
718                         if (!check_int(p, "rate", &td->rate)) {
719                                 fgetpos(f, &off);
720                                 continue;
721                         }
722                         if (!check_int(p, "ratemin", &td->ratemin)) {
723                                 fgetpos(f, &off);
724                                 continue;
725                         }
726                         if (!check_int(p, "ratecycle", &td->ratecycle)) {
727                                 fgetpos(f, &off);
728                                 continue;
729                         }
730                         if (!check_int(p, "thinktime", &td->thinktime)) {
731                                 fgetpos(f, &off);
732                                 continue;
733                         }
734                         if (!check_int(p, "cpumask", &cpu)) {
735 #ifndef FIO_HAVE_CPU_AFFINITY
736                                 fprintf(stderr, "cpu affinity not available\n");
737                                 return 1;
738 #endif
739                                 fill_cpu_mask(td->cpumask, cpu);
740                                 fgetpos(f, &off);
741                                 continue;
742                         }
743                         if (!check_int(p, "fsync", &td->fsync_blocks)) {
744                                 fgetpos(f, &off);
745                                 td->end_fsync = 1;
746                                 continue;
747                         }
748                         if (!check_int(p, "startdelay", &td->start_delay)) {
749                                 fgetpos(f, &off);
750                                 continue;
751                         }
752                         if (!check_int(p, "timeout", &td->timeout)) {
753                                 fgetpos(f, &off);
754                                 continue;
755                         }
756                         if (!check_int(p, "invalidate",&td->invalidate_cache)) {
757                                 fgetpos(f, &off);
758                                 continue;
759                         }
760                         if (!check_int(p, "iodepth", &td->iodepth)) {
761                                 fgetpos(f, &off);
762                                 continue;
763                         }
764                         if (!check_int(p, "sync", &td->sync_io)) {
765                                 fgetpos(f, &off);
766                                 continue;
767                         }
768                         if (!check_int(p, "bwavgtime", &td->bw_avg_time)) {
769                                 fgetpos(f, &off);
770                                 continue;
771                         }
772                         if (!check_int(p, "create_serialize", &td->create_serialize)) {
773                                 fgetpos(f, &off);
774                                 continue;
775                         }
776                         if (!check_int(p, "create_fsync", &td->create_fsync)) {
777                                 fgetpos(f, &off);
778                                 continue;
779                         }
780                         if (!check_int(p, "end_fsync", &td->end_fsync)) {
781                                 fgetpos(f, &off);
782                                 continue;
783                         }
784                         if (!check_int(p, "loops", &td->loops)) {
785                                 fgetpos(f, &off);
786                                 continue;
787                         }
788                         if (!check_int(p, "numjobs", &td->numjobs)) {
789                                 fgetpos(f, &off);
790                                 continue;
791                         }
792                         if (!check_int(p, "overwrite", &td->overwrite)) {
793                                 fgetpos(f, &off);
794                                 continue;
795                         }
796                         if (!check_int(p, "rwmixcycle", &td->rwmixcycle)) {
797                                 fgetpos(f, &off);
798                                 continue;
799                         }
800                         if (!check_int(p, "rwmixread", &il)) {
801                                 if (il > 100)
802                                         il = 100;
803                                 td->rwmixread = il;
804                                 fgetpos(f, &off);
805                                 continue;
806                         }
807                         if (!check_int(p, "rwmixwrite", &il)) {
808                                 if (il > 100)
809                                         il = 100;
810                                 td->rwmixread = 100 - il;
811                                 fgetpos(f, &off);
812                                 continue;
813                         }
814                         if (!check_int(p, "nice", &td->nice)) {
815                                 fgetpos(f, &off);
816                                 continue;
817                         }
818                         if (!check_range(p, "bsrange", &ul1, &ul2)) {
819                                 if (ul1 > ul2) {
820                                         td->max_bs = ul1;
821                                         td->min_bs = ul2;
822                                 } else {
823                                         td->max_bs = ul2;
824                                         td->min_bs = ul1;
825                                 }
826                                 fgetpos(f, &off);
827                                 continue;
828                         }
829                         if (!check_strcnv(p, "bs", &ull)) {
830                                 td->bs = ull;
831                                 fgetpos(f, &off);
832                                 continue;
833                         }
834                         if (!check_strcnv(p, "size", &td->file_size)) {
835                                 fgetpos(f, &off);
836                                 continue;
837                         }
838                         if (!check_strcnv(p, "offset", &td->file_offset)) {
839                                 fgetpos(f, &off);
840                                 continue;
841                         }
842                         if (!check_strcnv(p, "zonesize", &td->zone_size)) {
843                                 fgetpos(f, &off);
844                                 continue;
845                         }
846                         if (!check_strcnv(p, "zoneskip", &td->zone_skip)) {
847                                 fgetpos(f, &off);
848                                 continue;
849                         }
850                         if (!check_strcnv(p, "lockmem", &mlock_size)) {
851                                 fgetpos(f, &off);
852                                 continue;
853                         }
854                         if (!check_strstore(p, "directory", tmpbuf)) {
855                                 td->directory = strdup(tmpbuf);
856                                 fgetpos(f, &off);
857                                 continue;
858                         }
859                         if (!check_strstore(p, "name", tmpbuf)) {
860                                 snprintf(td->name, sizeof(td->name)-1, "%s%d", tmpbuf, td->thread_number);
861                                 fgetpos(f, &off);
862                                 continue;
863                         }
864                         if (!check_str(p, "mem", str_mem_cb, td)) {
865                                 fgetpos(f, &off);
866                                 continue;
867                         }
868                         if (!check_str(p, "verify", str_verify_cb, td)) {
869                                 fgetpos(f, &off);
870                                 continue;
871                         }
872                         if (!check_str(p, "rw", str_rw_cb, td)) {
873                                 fgetpos(f, &off);
874                                 continue;
875                         }
876                         if (!check_str(p, "ioengine", str_ioengine_cb, td)) {
877                                 fgetpos(f, &off);
878                                 continue;
879                         }
880                         if (!check_strset(p, "create")) {
881                                 td->create_file = 1;
882                                 fgetpos(f, &off);
883                                 continue;
884                         }
885                         if (!check_strset(p, "exitall")) {
886                                 exitall_on_terminate = 1;
887                                 fgetpos(f, &off);
888                                 continue;
889                         }
890                         if (!check_strset(p, "stonewall")) {
891                                 td->stonewall = 1;
892                                 fgetpos(f, &off);
893                                 continue;
894                         }
895                         if (!check_strset(p, "thread")) {
896                                 td->use_thread = 1;
897                                 fgetpos(f, &off);
898                                 continue;
899                         }
900                         if (!check_strstore(p, "iolog", tmpbuf)) {
901                                 td->iolog_file = strdup(tmpbuf);
902                                 td->read_iolog = 1;
903                                 td->write_iolog = 0;
904                                 fgetpos(f, &off);
905                                 continue;
906                         }
907                         if (!td->read_iolog &&
908                             !check_strstore(p, "write_iolog", tmpbuf)) {
909                                 td->iolog_file = strdup(tmpbuf);
910                                 td->write_iolog = 1;
911                                 fgetpos(f, &off);
912                                 continue;
913                         }
914                         if (!check_strstore(p, "exec_prerun", tmpbuf)) {
915                                 td->exec_prerun = strdup(tmpbuf);
916                                 fgetpos(f, &off);
917                                 continue;
918                         }
919                         if (!check_strstore(p, "exec_postrun", tmpbuf)) {
920                                 td->exec_postrun = strdup(tmpbuf);
921                                 fgetpos(f, &off);
922                                 continue;
923                         }
924                         if (!check_strstore(p, "ioscheduler", tmpbuf)) {
925                                 td->ioscheduler = strdup(tmpbuf);
926                                 fgetpos(f, &off);
927                                 continue;
928                         }
929
930                         printf("Client%d: bad option %s\n",td->thread_number,p);
931                         return 1;
932                 }
933                 fsetpos(f, &off);
934
935                 if (add_job(td, name, 0))
936                         return 1;
937         }
938
939         free(string);
940         free(name);
941         free(tmpbuf);
942         fclose(f);
943         return 0;
944 }
945
946 static int fill_def_thread(void)
947 {
948         memset(&def_thread, 0, sizeof(def_thread));
949
950         if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
951                 perror("sched_getaffinity");
952                 return 1;
953         }
954
955         /*
956          * fill globals
957          */
958         def_thread.ddir = DDIR_READ;
959         def_thread.iomix = 0;
960         def_thread.bs = DEF_BS;
961         def_thread.min_bs = -1;
962         def_thread.max_bs = -1;
963         def_thread.io_engine = DEF_IO_ENGINE;
964         strcpy(def_thread.io_engine_name, DEF_IO_ENGINE_NAME);
965         def_thread.odirect = DEF_ODIRECT;
966         def_thread.ratecycle = DEF_RATE_CYCLE;
967         def_thread.sequential = DEF_SEQUENTIAL;
968         def_thread.timeout = DEF_TIMEOUT;
969         def_thread.create_file = DEF_CREATE;
970         def_thread.overwrite = DEF_OVERWRITE;
971         def_thread.invalidate_cache = DEF_INVALIDATE;
972         def_thread.sync_io = DEF_SYNCIO;
973         def_thread.mem_type = MEM_MALLOC;
974         def_thread.bw_avg_time = DEF_BWAVGTIME;
975         def_thread.create_serialize = DEF_CREATE_SER;
976         def_thread.create_fsync = DEF_CREATE_FSYNC;
977         def_thread.loops = DEF_LOOPS;
978         def_thread.verify = DEF_VERIFY;
979         def_thread.stonewall = DEF_STONEWALL;
980         def_thread.numjobs = DEF_NUMJOBS;
981         def_thread.use_thread = DEF_USE_THREAD;
982         def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
983         def_thread.rwmixread = DEF_RWMIX_READ;
984         def_thread.nice = DEF_NICE;
985 #ifdef FIO_HAVE_DISK_UTIL
986         def_thread.do_disk_util = 1;
987 #endif
988
989         return 0;
990 }
991
992 static void usage(char *name)
993 {
994         printf("%s\n", fio_version_string);
995         printf("\t-s IO is sequential\n");
996         printf("\t-b Block size in KiB for each IO\n");
997         printf("\t-t Runtime in seconds\n");
998         printf("\t-R Exit all threads on failure to meet rate goal\n");
999         printf("\t-o Use O_DIRECT\n");
1000         printf("\t-l Generate per-job latency logs\n");
1001         printf("\t-w Generate per-job bandwidth logs\n");
1002         printf("\t-f Job file (Required)\n");
1003         printf("\t-v Print version info and exit\n");
1004 }
1005
1006 static void parse_cmd_line(int argc, char *argv[])
1007 {
1008         int c;
1009
1010         while ((c = getopt(argc, argv, "s:b:t:r:R:o:f:lwvh")) != EOF) {
1011                 switch (c) {
1012                         case 's':
1013                                 def_thread.sequential = !!atoi(optarg);
1014                                 break;
1015                         case 'b':
1016                                 def_thread.bs = atoi(optarg);
1017                                 def_thread.bs <<= 10;
1018                                 if (!def_thread.bs) {
1019                                         printf("bad block size\n");
1020                                         def_thread.bs = DEF_BS;
1021                                 }
1022                                 break;
1023                         case 't':
1024                                 def_thread.timeout = atoi(optarg);
1025                                 break;
1026                         case 'r':
1027                                 repeatable = !!atoi(optarg);
1028                                 break;
1029                         case 'R':
1030                                 rate_quit = !!atoi(optarg);
1031                                 break;
1032                         case 'o':
1033                                 def_thread.odirect = !!atoi(optarg);
1034                                 break;
1035                         case 'f':
1036                                 ini_file = strdup(optarg);
1037                                 break;
1038                         case 'l':
1039                                 write_lat_log = 1;
1040                                 break;
1041                         case 'w':
1042                                 write_bw_log = 1;
1043                                 break;
1044                         case 'h':
1045                                 usage(argv[0]);
1046                                 exit(0);
1047                         case 'v':
1048                                 printf("%s\n", fio_version_string);
1049                                 exit(0);
1050                 }
1051         }
1052
1053         if (!ini_file && argc > 1 && argv[argc - 1][0] != '-')
1054                 ini_file = strdup(argv[argc - 1]);
1055 }
1056
1057 static void free_shm(void)
1058 {
1059         struct shmid_ds sbuf;
1060
1061         if (threads) {
1062                 shmdt(threads);
1063                 threads = NULL;
1064                 shmctl(shm_id, IPC_RMID, &sbuf);
1065         }
1066 }
1067
1068 static int setup_thread_area(void)
1069 {
1070         /*
1071          * 1024 is too much on some machines, scale max_jobs if
1072          * we get a failure that looks like too large a shm segment
1073          */
1074         do {
1075                 int s = max_jobs * sizeof(struct thread_data);
1076
1077                 shm_id = shmget(0, s, IPC_CREAT | 0600);
1078                 if (shm_id != -1)
1079                         break;
1080                 if (errno != EINVAL) {
1081                         perror("shmget");
1082                         break;
1083                 }
1084
1085                 max_jobs >>= 1;
1086         } while (max_jobs);
1087
1088         if (shm_id == -1)
1089                 return 1;
1090
1091         threads = shmat(shm_id, NULL, 0);
1092         if (threads == (void *) -1) {
1093                 perror("shmat");
1094                 return 1;
1095         }
1096
1097         atexit(free_shm);
1098         return 0;
1099 }
1100
1101 int parse_options(int argc, char *argv[])
1102 {
1103         if (setup_thread_area())
1104                 return 1;
1105         if (fill_def_thread())
1106                 return 1;
1107
1108         parse_cmd_line(argc, argv);
1109
1110         if (!ini_file) {
1111                 printf("Need job file\n");
1112                 usage(argv[0]);
1113                 return 1;
1114         }
1115
1116         if (parse_jobs_ini(ini_file)) {
1117                 usage(argv[0]);
1118                 return 1;
1119         }
1120
1121         return 0;
1122 }