fio-ini.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
  40 static char fio_version_string[] = "fio 1.3";
  41
  42 static int repeatable = DEF_RAND_REPEAT;
  43 static char *ini_file;
  44 static int max_jobs = MAX_JOBS;
  45
  46 struct thread_data def_thread;
  47 struct thread_data *threads = NULL;
  48
  49 int rate_quit = 0;
  50 int write_lat_log = 0;
  51 int write_bw_log = 0;
  52 int exitall_on_terminate = 0;
  53
  54 static int setup_rate(struct thread_data *td)
  55 {
  56         int nr_reads_per_sec;
  57
  58         if (!td->rate)
  59                 return 0;
  60
  61         if (td->rate < td->ratemin) {
  62                 fprintf(stderr, "min rate larger than nominal rate\n");
  63                 return -1;
  64         }
  65
  66         nr_reads_per_sec = (td->rate * 1024) / td->min_bs;
  67         td->rate_usec_cycle = 1000000 / nr_reads_per_sec;
  68         td->rate_pending_usleep = 0;
  69         return 0;
  70 }
  71
  72 static void setup_log(struct io_log **log)
  73 {
  74         struct io_log *l = malloc(sizeof(*l));
  75
  76         l->nr_samples = 0;
  77         l->max_samples = 1024;
  78         l->log = malloc(l->max_samples * sizeof(struct io_sample));
  79         *log = l;
  80 }
  81
  82 void finish_log(struct thread_data *td, struct io_log *log, const char *name)
  83 {
  84         char file_name[256];
  85         FILE *f;
  86         unsigned int i;
  87
  88         snprintf(file_name, 200, "client%d_%s.log", td->thread_number, name);
  89         f = fopen(file_name, "w");
  90         if (!f) {
  91                 perror("fopen log");
  92                 return;
  93         }
  94
  95         for (i = 0; i < log->nr_samples; i++)
  96                 fprintf(f, "%lu, %lu, %u\n", log->log[i].time, log->log[i].val, log->log[i].ddir);
  97
  98         fclose(f);
  99         free(log->log);
 100         free(log);
 101 }
 102
 103 static struct thread_data *get_new_job(int global, struct thread_data *parent)
 104 {
 105         struct thread_data *td;
 106
 107         if (global)
 108                 return &def_thread;
 109         if (thread_number >= max_jobs)
 110                 return NULL;
 111
 112         td = &threads[thread_number++];
 113         memset(td, 0, sizeof(*td));
 114
 115         td->fd = -1;
 116         td->thread_number = thread_number;
 117
 118         td->ddir = parent->ddir;
 119         td->ioprio = parent->ioprio;
 120         td->sequential = parent->sequential;
 121         td->bs = parent->bs;
 122         td->min_bs = parent->min_bs;
 123         td->max_bs = parent->max_bs;
 124         td->odirect = parent->odirect;
 125         td->thinktime = parent->thinktime;
 126         td->fsync_blocks = parent->fsync_blocks;
 127         td->start_delay = parent->start_delay;
 128         td->timeout = parent->timeout;
 129         td->io_engine = parent->io_engine;
 130         td->create_file = parent->create_file;
 131         td->overwrite = parent->overwrite;
 132         td->invalidate_cache = parent->invalidate_cache;
 133         td->file_size = parent->file_size;
 134         td->file_offset = parent->file_offset;
 135         td->zone_size = parent->zone_size;
 136         td->zone_skip = parent->zone_skip;
 137         td->rate = parent->rate;
 138         td->ratemin = parent->ratemin;
 139         td->ratecycle = parent->ratecycle;
 140         td->iodepth = parent->iodepth;
 141         td->sync_io = parent->sync_io;
 142         td->mem_type = parent->mem_type;
 143         td->bw_avg_time = parent->bw_avg_time;
 144         td->create_serialize = parent->create_serialize;
 145         td->create_fsync = parent->create_fsync;
 146         td->loops = parent->loops;
 147         td->verify = parent->verify;
 148         td->stonewall = parent->stonewall;
 149         td->numjobs = parent->numjobs;
 150         td->use_thread = parent->use_thread;
 151         td->do_disk_util = parent->do_disk_util;
 152         memcpy(&td->cpumask, &parent->cpumask, sizeof(td->cpumask));
 153         strcpy(td->io_engine_name, parent->io_engine_name);
 154
 155         return td;
 156 }
 157
 158 static void put_job(struct thread_data *td)
 159 {
 160         memset(&threads[td->thread_number - 1], 0, sizeof(*td));
 161         thread_number--;
 162 }
 163
 164 static int add_job(struct thread_data *td, const char *jobname, int prioclass,
 165                    int prio)
 166 {
 167         char *ddir_str[] = { "read", "write", "randread", "randwrite",
 168                              "rw", NULL, "randrw" };
 169         struct stat sb;
 170         int numjobs, ddir;
 171
 172 #ifndef FIO_HAVE_LIBAIO
 173         if (td->io_engine == FIO_LIBAIO) {
 174                 fprintf(stderr, "Linux libaio not available\n");
 175                 return 1;
 176         }
 177 #endif
 178 #ifndef FIO_HAVE_POSIXAIO
 179         if (td->io_engine == FIO_POSIXAIO) {
 180                 fprintf(stderr, "posix aio not available\n");
 181                 return 1;
 182         }
 183 #endif
 184 #ifdef FIO_HAVE_IOPRIO
 185         td->ioprio = (prioclass << IOPRIO_CLASS_SHIFT) | prio;
 186 #endif
 187
 188         /*
 189          * the def_thread is just for options, it's not a real job
 190          */
 191         if (td == &def_thread)
 192                 return 0;
 193
 194         if (td->io_engine & FIO_SYNCIO)
 195                 td->iodepth = 1;
 196         else {
 197                 if (!td->iodepth)
 198                         td->iodepth = 1;
 199         }
 200
 201         /*
 202          * only really works for sequential io for now
 203          */
 204         if (td->zone_size && !td->sequential)
 205                 td->zone_size = 0;
 206
 207         td->filetype = FIO_TYPE_FILE;
 208         if (!stat(jobname, &sb)) {
 209                 if (S_ISBLK(sb.st_mode))
 210                         td->filetype = FIO_TYPE_BD;
 211                 else if (S_ISCHR(sb.st_mode))
 212                         td->filetype = FIO_TYPE_CHAR;
 213         }
 214
 215         if (td->filetype == FIO_TYPE_FILE) {
 216                 if (td->directory[0] != '\0')
 217                         sprintf(td->file_name, "%s/%s.%d", td->directory, jobname, td->jobnum);
 218                 else
 219                         sprintf(td->file_name, "%s.%d", jobname, td->jobnum);
 220         } else
 221                 strncpy(td->file_name, jobname, sizeof(td->file_name) - 1);
 222
 223         sem_init(&td->mutex, 0, 0);
 224
 225         td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
 226         td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
 227         td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
 228
 229         if (td->min_bs == -1U)
 230                 td->min_bs = td->bs;
 231         if (td->max_bs == -1U)
 232                 td->max_bs = td->bs;
 233         if (td_read(td) && !td_rw(td))
 234                 td->verify = 0;
 235
 236         if (td->stonewall && td->thread_number > 1)
 237                 groupid++;
 238
 239         td->groupid = groupid;
 240
 241         if (setup_rate(td))
 242                 goto err;
 243
 244         if (write_lat_log) {
 245                 setup_log(&td->slat_log);
 246                 setup_log(&td->clat_log);
 247         }
 248         if (write_bw_log)
 249                 setup_log(&td->bw_log);
 250
 251         ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
 252         printf("Client%d (g=%d): rw=%s, prio=%d/%d, odir=%d, bs=%d-%d, rate=%d, ioengine=%s, iodepth=%d\n", td->thread_number, td->groupid, ddir_str[ddir], prioclass, prio, td->odirect, td->min_bs, td->max_bs, td->rate, td->io_engine_name, td->iodepth);
 253
 254         /*
 255          * recurse add identical jobs, clear numjobs and stonewall options
 256          * as they don't apply to sub-jobs
 257          */
 258         numjobs = td->numjobs;
 259         while (--numjobs) {
 260                 struct thread_data *td_new = get_new_job(0, td);
 261
 262                 if (!td_new)
 263                         goto err;
 264
 265                 td_new->numjobs = 1;
 266                 td_new->stonewall = 0;
 267                 td_new->jobnum = numjobs;
 268
 269                 if (add_job(td_new, jobname, prioclass, prio))
 270                         goto err;
 271         }
 272         return 0;
 273 err:
 274         put_job(td);
 275         return -1;
 276 }
 277
 278 int init_random_state(struct thread_data *td)
 279 {
 280         unsigned long seed;
 281         int fd, num_maps, blocks;
 282
 283         fd = open("/dev/random", O_RDONLY);
 284         if (fd == -1) {
 285                 td_verror(td, errno);
 286                 return 1;
 287         }
 288
 289         if (read(fd, &seed, sizeof(seed)) < (int) sizeof(seed)) {
 290                 td_verror(td, EIO);
 291                 close(fd);
 292                 return 1;
 293         }
 294
 295         close(fd);
 296
 297         srand48_r(seed, &td->bsrange_state);
 298         srand48_r(seed, &td->verify_state);
 299
 300         if (td->sequential)
 301                 return 0;
 302
 303         if (repeatable)
 304                 seed = DEF_RANDSEED;
 305
 306         blocks = (td->io_size + td->min_bs - 1) / td->min_bs;
 307         num_maps = blocks / BLOCKS_PER_MAP;
 308         td->file_map = malloc(num_maps * sizeof(long));
 309         td->num_maps = num_maps;
 310         memset(td->file_map, 0, num_maps * sizeof(long));
 311
 312         srand48_r(seed, &td->random_state);
 313         return 0;
 314 }
 315
 316 static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
 317 {
 318 #ifdef FIO_HAVE_CPU_AFFINITY
 319         unsigned int i;
 320
 321         CPU_ZERO(&cpumask);
 322
 323         for (i = 0; i < sizeof(int) * 8; i++) {
 324                 if ((1 << i) & cpu)
 325                         CPU_SET(i, &cpumask);
 326         }
 327 #endif
 328 }
 329
 330 static unsigned long get_mult(char c)
 331 {
 332         switch (c) {
 333                 case 'k':
 334                 case 'K':
 335                         return 1024;
 336                 case 'm':
 337                 case 'M':
 338                         return 1024 * 1024;
 339                 case 'g':
 340                 case 'G':
 341                         return 1024 * 1024 * 1024;
 342                 default:
 343                         return 1;
 344         }
 345 }
 346
 347 /*
 348  * convert string after '=' into decimal value, noting any size suffix
 349  */
 350 static int str_cnv(char *p, unsigned long long *val)
 351 {
 352         char *str;
 353         int len;
 354
 355         str = strchr(p, '=');
 356         if (!str)
 357                 return 1;
 358
 359         str++;
 360         len = strlen(str);
 361
 362         *val = strtoul(str, NULL, 10);
 363         if (*val == ULONG_MAX && errno == ERANGE)
 364                 return 1;
 365
 366         *val *= get_mult(str[len - 2]);
 367         return 0;
 368 }
 369
 370 static int check_strcnv(char *p, char *name, unsigned long long *val)
 371 {
 372         if (strncmp(p, name, strlen(name) - 1))
 373                 return 1;
 374
 375         return str_cnv(p, val);
 376 }
 377
 378 static void strip_blank_front(char **p)
 379 {
 380         char *s = *p;
 381
 382         while (isblank(*s))
 383                 s++;
 384 }
 385
 386 static void strip_blank_end(char *p)
 387 {
 388         while (isblank(*p)) {
 389                 *p = '\0';
 390                 p--;
 391         }
 392 }
 393
 394 static void terminate_line(char *p)
 395 {
 396         while (*p != '\n' && *p != '\0')
 397                 p++;
 398
 399         *p = '\0';
 400 }
 401
 402 typedef int (str_cb_fn)(struct thread_data *, char *);
 403
 404 static int check_str(char *p, char *name, str_cb_fn *cb, struct thread_data *td)
 405 {
 406         char *s = strstr(p, name);
 407
 408         if (!s)
 409                 return 1;
 410
 411         s = strchr(s, '=');
 412         if (!s)
 413                 return 1;
 414
 415         s++;
 416         strip_blank_front(&s);
 417         return cb(td, s);
 418 }
 419
 420 static int check_strstore(char *p, char *name, char *dest)
 421 {
 422         char *s = strstr(p, name);
 423
 424         if (!s)
 425                 return 1;
 426
 427         s = strchr(p, '=');
 428         if (!s)
 429                 return 1;
 430
 431         s++;
 432         strip_blank_front(&s);
 433
 434         strcpy(dest, s);
 435
 436         s = dest + strlen(dest) - 1;
 437         strip_blank_end(s);
 438         return 0;
 439 }
 440
 441 static int __check_range(char *str, unsigned long *val)
 442 {
 443         char suffix;
 444
 445         if (sscanf(str, "%lu%c", val, &suffix) == 2) {
 446                 *val *= get_mult(suffix);
 447                 return 0;
 448         }
 449
 450         if (sscanf(str, "%lu", val) == 1)
 451                 return 0;
 452
 453         return 1;
 454 }
 455
 456 static int check_range(char *p, char *name, unsigned long *s, unsigned long *e)
 457 {
 458         char option[128];
 459         char *str, *p1, *p2;
 460
 461         strcpy(option, p);
 462         p = option;
 463
 464         str = strstr(p, name);
 465         if (!str)
 466                 return 1;
 467
 468         p += strlen(name);
 469
 470         str = strchr(p, '=');
 471         if (!str)
 472                 return 1;
 473
 474         /*
 475          * 'p' now holds whatever is after the '=' sign
 476          */
 477         p1 = str + 1;
 478
 479         /*
 480          * terminate p1 at the '-' sign
 481          */
 482         p = strchr(p1, '-');
 483         if (!p)
 484                 return 1;
 485
 486         p2 = p + 1;
 487         *p = '\0';
 488
 489         if (!__check_range(p1, s) && !__check_range(p2, e))
 490                 return 0;
 491
 492         return 1;
 493 }
 494
 495 static int check_int(char *p, char *name, unsigned int *val)
 496 {
 497         char *str;
 498
 499         str = strstr(p, name);
 500         if (!str)
 501                 return 1;
 502
 503         str = strchr(p, '=');
 504         if (!str)
 505                 return 1;
 506
 507         str++;
 508
 509         if (sscanf(str, "%u", val) == 1)
 510                 return 0;
 511
 512         return 1;
 513 }
 514
 515 static int check_strset(char *p, char *name)
 516 {
 517         return strncmp(p, name, strlen(name));
 518 }
 519
 520 static int is_empty_or_comment(char *line)
 521 {
 522         unsigned int i;
 523
 524         for (i = 0; i < strlen(line); i++) {
 525                 if (line[i] == ';')
 526                         return 1;
 527                 if (!isspace(line[i]) && !iscntrl(line[i]))
 528                         return 0;
 529         }
 530
 531         return 1;
 532 }
 533
 534 static int str_rw_cb(struct thread_data *td, char *mem)
 535 {
 536         if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
 537                 td->ddir = DDIR_READ;
 538                 td->sequential = 1;
 539                 return 0;
 540         } else if (!strncmp(mem, "randread", 8)) {
 541                 td->ddir = DDIR_READ;
 542                 td->sequential = 0;
 543                 return 0;
 544         } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
 545                 td->ddir = DDIR_WRITE;
 546                 td->sequential = 1;
 547                 return 0;
 548         } else if (!strncmp(mem, "randwrite", 9)) {
 549                 td->ddir = DDIR_WRITE;
 550                 td->sequential = 0;
 551                 return 0;
 552         } else if (!strncmp(mem, "rw", 2)) {
 553                 td->ddir = 0;
 554                 td->iomix = 1;
 555                 td->sequential = 1;
 556                 return 0;
 557         } else if (!strncmp(mem, "randrw", 6)) {
 558                 td->ddir = 0;
 559                 td->iomix = 1;
 560                 td->sequential = 0;
 561                 return 0;
 562         }
 563
 564         fprintf(stderr, "bad data direction: %s\n", mem);
 565         return 1;
 566 }
 567
 568 static int str_verify_cb(struct thread_data *td, char *mem)
 569 {
 570         if (!strncmp(mem, "0", 1)) {
 571                 td->verify = VERIFY_NONE;
 572                 return 0;
 573         } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
 574                 td->verify = VERIFY_MD5;
 575                 return 0;
 576         } else if (!strncmp(mem, "crc32", 5)) {
 577                 td->verify = VERIFY_CRC32;
 578                 return 0;
 579         }
 580
 581         fprintf(stderr, "bad verify type: %s\n", mem);
 582         return 1;
 583 }
 584
 585 static int str_mem_cb(struct thread_data *td, char *mem)
 586 {
 587         if (!strncmp(mem, "malloc", 6)) {
 588                 td->mem_type = MEM_MALLOC;
 589                 return 0;
 590         } else if (!strncmp(mem, "shm", 3)) {
 591                 td->mem_type = MEM_SHM;
 592                 return 0;
 593         } else if (!strncmp(mem, "mmap", 4)) {
 594                 td->mem_type = MEM_MMAP;
 595                 return 0;
 596         }
 597
 598         fprintf(stderr, "bad mem type: %s\n", mem);
 599         return 1;
 600 }
 601
 602 static int str_ioengine_cb(struct thread_data *td, char *str)
 603 {
 604         if (!strncmp(str, "linuxaio", 8) || !strncmp(str, "aio", 3) ||
 605             !strncmp(str, "libaio", 6)) {
 606                 strcpy(td->io_engine_name, "libaio");
 607                 td->io_engine = FIO_LIBAIO;
 608                 return 0;
 609         } else if (!strncmp(str, "posixaio", 8)) {
 610                 strcpy(td->io_engine_name, "posixaio");
 611                 td->io_engine = FIO_POSIXAIO;
 612                 return 0;
 613         } else if (!strncmp(str, "sync", 4)) {
 614                 strcpy(td->io_engine_name, "sync");
 615                 td->io_engine = FIO_SYNCIO;
 616                 return 0;
 617         } else if (!strncmp(str, "mmap", 4)) {
 618                 strcpy(td->io_engine_name, "mmap");
 619                 td->io_engine = FIO_MMAPIO;
 620                 return 0;
 621         } else if (!strncmp(str, "sgio", 4)) {
 622                 strcpy(td->io_engine_name, "sgio");
 623                 td->io_engine = FIO_SGIO;
 624                 return 0;
 625         }
 626
 627         fprintf(stderr, "bad ioengine type: %s\n", str);
 628         return 1;
 629 }
 630
 631 static int str_iolog_cb(struct thread_data *td, char *file)
 632 {
 633         terminate_line(file);
 634         strncpy(td->iolog_file, file, sizeof(td->iolog_file) - 1);
 635
 636         return 0;
 637 }
 638
 639 int parse_jobs_ini(char *file)
 640 {
 641         unsigned int prioclass, prio, cpu, global;
 642         unsigned long long ull;
 643         unsigned long ul1, ul2;
 644         struct thread_data *td;
 645         char *string, *name;
 646         fpos_t off;
 647         FILE *f;
 648         char *p;
 649
 650         f = fopen(file, "r");
 651         if (!f) {
 652                 perror("fopen job file");
 653                 return 1;
 654         }
 655
 656         string = malloc(4096);
 657         name = malloc(256);
 658
 659         while ((p = fgets(string, 4096, f)) != NULL) {
 660                 if (is_empty_or_comment(p))
 661                         continue;
 662                 if (sscanf(p, "[%s]", name) != 1)
 663                         continue;
 664
 665                 global = !strncmp(name, "global", 6);
 666
 667                 name[strlen(name) - 1] = '\0';
 668
 669                 td = get_new_job(global, &def_thread);
 670                 if (!td)
 671                         return 1;
 672
 673                 prioclass = 2;
 674                 prio = 4;
 675
 676                 fgetpos(f, &off);
 677                 while ((p = fgets(string, 4096, f)) != NULL) {
 678                         if (is_empty_or_comment(p))
 679                                 continue;
 680                         if (strstr(p, "["))
 681                                 break;
 682
 683                         if (!check_int(p, "prio", &prio)) {
 684 #ifndef FIO_HAVE_IOPRIO
 685                                 fprintf(stderr, "io priorities not available\n");
 686                                 return 1;
 687 #endif
 688                                 fgetpos(f, &off);
 689                                 continue;
 690                         }
 691                         if (!check_int(p, "prioclass", &prioclass)) {
 692 #ifndef FIO_HAVE_IOPRIO
 693                                 fprintf(stderr, "io priorities not available\n");
 694                                 return 1;
 695 #endif
 696                                 fgetpos(f, &off);
 697                                 continue;
 698                         }
 699                         if (!check_int(p, "direct", &td->odirect)) {
 700                                 fgetpos(f, &off);
 701                                 continue;
 702                         }
 703                         if (!check_int(p, "rate", &td->rate)) {
 704                                 fgetpos(f, &off);
 705                                 continue;
 706                         }
 707                         if (!check_int(p, "ratemin", &td->ratemin)) {
 708                                 fgetpos(f, &off);
 709                                 continue;
 710                         }
 711                         if (!check_int(p, "ratecycle", &td->ratecycle)) {
 712                                 fgetpos(f, &off);
 713                                 continue;
 714                         }
 715                         if (!check_int(p, "thinktime", &td->thinktime)) {
 716                                 fgetpos(f, &off);
 717                                 continue;
 718                         }
 719                         if (!check_int(p, "cpumask", &cpu)) {
 720 #ifndef FIO_HAVE_CPU_AFFINITY
 721                                 fprintf(stderr, "cpu affinity not available\n");
 722                                 return 1;
 723 #endif
 724                                 fill_cpu_mask(td->cpumask, cpu);
 725                                 fgetpos(f, &off);
 726                                 continue;
 727                         }
 728                         if (!check_int(p, "fsync", &td->fsync_blocks)) {
 729                                 fgetpos(f, &off);
 730                                 continue;
 731                         }
 732                         if (!check_int(p, "startdelay", &td->start_delay)) {
 733                                 fgetpos(f, &off);
 734                                 continue;
 735                         }
 736                         if (!check_int(p, "timeout", &td->timeout)) {
 737                                 fgetpos(f, &off);
 738                                 continue;
 739                         }
 740                         if (!check_int(p, "invalidate",&td->invalidate_cache)) {
 741                                 fgetpos(f, &off);
 742                                 continue;
 743                         }
 744                         if (!check_int(p, "iodepth", &td->iodepth)) {
 745                                 fgetpos(f, &off);
 746                                 continue;
 747                         }
 748                         if (!check_int(p, "sync", &td->sync_io)) {
 749                                 fgetpos(f, &off);
 750                                 continue;
 751                         }
 752                         if (!check_int(p, "bwavgtime", &td->bw_avg_time)) {
 753                                 fgetpos(f, &off);
 754                                 continue;
 755                         }
 756                         if (!check_int(p, "create_serialize", &td->create_serialize)) {
 757                                 fgetpos(f, &off);
 758                                 continue;
 759                         }
 760                         if (!check_int(p, "create_fsync", &td->create_fsync)) {
 761                                 fgetpos(f, &off);
 762                                 continue;
 763                         }
 764                         if (!check_int(p, "loops", &td->loops)) {
 765                                 fgetpos(f, &off);
 766                                 continue;
 767                         }
 768                         if (!check_int(p, "numjobs", &td->numjobs)) {
 769                                 fgetpos(f, &off);
 770                                 continue;
 771                         }
 772                         if (!check_int(p, "overwrite", &td->overwrite)) {
 773                                 fgetpos(f, &off);
 774                                 continue;
 775                         }
 776                         if (!check_range(p, "bsrange", &ul1, &ul2)) {
 777                                 if (ul1 > ul2) {
 778                                         td->max_bs = ul1;
 779                                         td->min_bs = ul2;
 780                                 } else {
 781                                         td->max_bs = ul2;
 782                                         td->min_bs = ul1;
 783                                 }
 784                                 fgetpos(f, &off);
 785                                 continue;
 786                         }
 787                         if (!check_strcnv(p, "bs", &ull)) {
 788                                 td->bs = ull;
 789                                 fgetpos(f, &off);
 790                                 continue;
 791                         }
 792                         if (!check_strcnv(p, "size", &td->file_size)) {
 793                                 fgetpos(f, &off);
 794                                 continue;
 795                         }
 796                         if (!check_strcnv(p, "offset", &td->file_offset)) {
 797                                 fgetpos(f, &off);
 798                                 continue;
 799                         }
 800                         if (!check_strcnv(p, "zonesize", &td->zone_size)) {
 801                                 fgetpos(f, &off);
 802                                 continue;
 803                         }
 804                         if (!check_strcnv(p, "zoneskip", &td->zone_skip)) {
 805                                 fgetpos(f, &off);
 806                                 continue;
 807                         }
 808                         if (!check_strstore(p, "directory", td->directory)) {
 809                                 fgetpos(f, &off);
 810                                 continue;
 811                         }
 812                         if (!check_str(p, "mem", str_mem_cb, td)) {
 813                                 fgetpos(f, &off);
 814                                 continue;
 815                         }
 816                         if (!check_str(p, "verify", str_verify_cb, td)) {
 817                                 fgetpos(f, &off);
 818                                 continue;
 819                         }
 820                         if (!check_str(p, "rw", str_rw_cb, td)) {
 821                                 fgetpos(f, &off);
 822                                 continue;
 823                         }
 824                         if (!check_str(p, "ioengine", str_ioengine_cb, td)) {
 825                                 fgetpos(f, &off);
 826                                 continue;
 827                         }
 828                         if (!check_strset(p, "create")) {
 829                                 td->create_file = 1;
 830                                 fgetpos(f, &off);
 831                                 continue;
 832                         }
 833                         if (!check_strset(p, "exitall")) {
 834                                 exitall_on_terminate = 1;
 835                                 fgetpos(f, &off);
 836                                 continue;
 837                         }
 838                         if (!check_strset(p, "stonewall")) {
 839                                 td->stonewall = 1;
 840                                 fgetpos(f, &off);
 841                                 continue;
 842                         }
 843                         if (!check_strset(p, "thread")) {
 844                                 td->use_thread = 1;
 845                                 fgetpos(f, &off);
 846                                 continue;
 847                         }
 848                         if (!check_str(p, "iolog", str_iolog_cb, td)) {
 849                                 td->iolog = 1;
 850                                 fgetpos(f, &off);
 851                                 continue;
 852                         }
 853
 854                         printf("Client%d: bad option %s\n",td->thread_number,p);
 855                         return 1;
 856                 }
 857                 fsetpos(f, &off);
 858
 859                 if (add_job(td, name, prioclass, prio))
 860                         return 1;
 861         }
 862
 863         free(string);
 864         free(name);
 865         fclose(f);
 866         return 0;
 867 }
 868
 869 static int fill_def_thread(void)
 870 {
 871         memset(&def_thread, 0, sizeof(def_thread));
 872
 873         if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
 874                 perror("sched_getaffinity");
 875                 return 1;
 876         }
 877
 878         /*
 879          * fill globals
 880          */
 881         def_thread.ddir = DDIR_READ;
 882         def_thread.iomix = 0;
 883         def_thread.bs = DEF_BS;
 884         def_thread.min_bs = -1;
 885         def_thread.max_bs = -1;
 886         def_thread.io_engine = DEF_IO_ENGINE;
 887         strcpy(def_thread.io_engine_name, DEF_IO_ENGINE_NAME);
 888         def_thread.odirect = DEF_ODIRECT;
 889         def_thread.ratecycle = DEF_RATE_CYCLE;
 890         def_thread.sequential = DEF_SEQUENTIAL;
 891         def_thread.timeout = DEF_TIMEOUT;
 892         def_thread.create_file = DEF_CREATE;
 893         def_thread.overwrite = DEF_OVERWRITE;
 894         def_thread.invalidate_cache = DEF_INVALIDATE;
 895         def_thread.sync_io = DEF_SYNCIO;
 896         def_thread.mem_type = MEM_MALLOC;
 897         def_thread.bw_avg_time = DEF_BWAVGTIME;
 898         def_thread.create_serialize = DEF_CREATE_SER;
 899         def_thread.create_fsync = DEF_CREATE_FSYNC;
 900         def_thread.loops = DEF_LOOPS;
 901         def_thread.verify = DEF_VERIFY;
 902         def_thread.stonewall = DEF_STONEWALL;
 903         def_thread.numjobs = DEF_NUMJOBS;
 904         def_thread.use_thread = DEF_USE_THREAD;
 905 #ifdef FIO_HAVE_DISK_UTIL
 906         def_thread.do_disk_util = 1;
 907 #endif
 908
 909         return 0;
 910 }
 911
 912 static void usage(char *name)
 913 {
 914         printf("%s\n", fio_version_string);
 915         printf("\t-s IO is sequential\n");
 916         printf("\t-b Block size in KiB for each IO\n");
 917         printf("\t-t Runtime in seconds\n");
 918         printf("\t-R Exit all threads on failure to meet rate goal\n");
 919         printf("\t-o Use O_DIRECT\n");
 920         printf("\t-l Generate per-job latency logs\n");
 921         printf("\t-w Generate per-job bandwidth logs\n");
 922         printf("\t-f Job file (Required)\n");
 923         printf("\t-v Print version info and exit\n");
 924 }
 925
 926 static void parse_cmd_line(int argc, char *argv[])
 927 {
 928         int c;
 929
 930         while ((c = getopt(argc, argv, "s:b:t:r:R:o:f:lwvh")) != EOF) {
 931                 switch (c) {
 932                         case 's':
 933                                 def_thread.sequential = !!atoi(optarg);
 934                                 break;
 935                         case 'b':
 936                                 def_thread.bs = atoi(optarg);
 937                                 def_thread.bs <<= 10;
 938                                 if (!def_thread.bs) {
 939                                         printf("bad block size\n");
 940                                         def_thread.bs = DEF_BS;
 941                                 }
 942                                 break;
 943                         case 't':
 944                                 def_thread.timeout = atoi(optarg);
 945                                 break;
 946                         case 'r':
 947                                 repeatable = !!atoi(optarg);
 948                                 break;
 949                         case 'R':
 950                                 rate_quit = !!atoi(optarg);
 951                                 break;
 952                         case 'o':
 953                                 def_thread.odirect = !!atoi(optarg);
 954                                 break;
 955                         case 'f':
 956                                 ini_file = strdup(optarg);
 957                                 break;
 958                         case 'l':
 959                                 write_lat_log = 1;
 960                                 break;
 961                         case 'w':
 962                                 write_bw_log = 1;
 963                                 break;
 964                         case 'h':
 965                                 usage(argv[0]);
 966                                 exit(0);
 967                         case 'v':
 968                                 printf("%s\n", fio_version_string);
 969                                 exit(0);
 970                 }
 971         }
 972
 973         if (!ini_file && argc > 1 && argv[argc - 1][0] != '-')
 974                 ini_file = strdup(argv[argc - 1]);
 975 }
 976
 977 static void free_shm(void)
 978 {
 979         struct shmid_ds sbuf;
 980
 981         if (threads) {
 982                 shmdt(threads);
 983                 threads = NULL;
 984                 shmctl(shm_id, IPC_RMID, &sbuf);
 985         }
 986 }
 987
 988 static int setup_thread_area(void)
 989 {
 990         /*
 991          * 1024 is too much on some machines, scale max_jobs if
 992          * we get a failure that looks like too large a shm segment
 993          */
 994         do {
 995                 int s = max_jobs * sizeof(struct thread_data);
 996
 997                 shm_id = shmget(0, s, IPC_CREAT | 0600);
 998                 if (shm_id != -1)
 999                         break;
1000                 if (errno != EINVAL) {
1001                         perror("shmget");
1002                         break;
1003                 }
1004
1005                 max_jobs >>= 1;
1006         } while (max_jobs);
1007
1008         if (shm_id == -1)
1009                 return 1;
1010
1011         threads = shmat(shm_id, NULL, 0);
1012         if (threads == (void *) -1) {
1013                 perror("shmat");
1014                 return 1;
1015         }
1016
1017         atexit(free_shm);
1018         return 0;
1019 }
1020
1021 int parse_options(int argc, char *argv[])
1022 {
1023         if (setup_thread_area())
1024                 return 1;
1025         if (fill_def_thread())
1026                 return 1;
1027
1028         parse_cmd_line(argc, argv);
1029
1030         if (!ini_file) {
1031                 printf("Need job file\n");
1032                 usage(argv[0]);
1033                 return 1;
1034         }
1035
1036         if (parse_jobs_ini(ini_file)) {
1037                 usage(argv[0]);
1038                 return 1;
1039         }
1040
1041         return 0;
1042 }