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 }