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 #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[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         ddir = td->ddir + (!td->sequential << 1) + (td->iomix << 2);
 255
 256         if (!job_add_num)
 257                 printf("Client%d (g=%d): rw=%s, odir=%d, bs=%d-%d, rate=%d, ioengine=%s, iodepth=%d\n", td->thread_number, td->groupid, ddir_str[ddir], td->odirect, td->min_bs, td->max_bs, td->rate, td->io_engine_name, td->iodepth);
 258         else if (job_add_num == 1)
 259                 printf("...\n");
 260
 261         /*
 262          * recurse add identical jobs, clear numjobs and stonewall options
 263          * as they don't apply to sub-jobs
 264          */
 265         numjobs = td->numjobs;
 266         while (--numjobs) {
 267                 struct thread_data *td_new = get_new_job(0, td);
 268
 269                 if (!td_new)
 270                         goto err;
 271
 272                 td_new->numjobs = 1;
 273                 td_new->stonewall = 0;
 274                 td_new->jobnum = numjobs;
 275                 job_add_num = numjobs - 1;
 276
 277                 if (add_job(td_new, jobname, job_add_num))
 278                         goto err;
 279         }
 280         return 0;
 281 err:
 282         put_job(td);
 283         return -1;
 284 }
 285
 286 int init_random_state(struct thread_data *td)
 287 {
 288         unsigned long seeds[4];
 289         int fd, num_maps, blocks;
 290
 291         fd = open("/dev/urandom", O_RDONLY);
 292         if (fd == -1) {
 293                 td_verror(td, errno);
 294                 return 1;
 295         }
 296
 297         if (read(fd, seeds, sizeof(seeds)) < (int) sizeof(seeds)) {
 298                 td_verror(td, EIO);
 299                 close(fd);
 300                 return 1;
 301         }
 302
 303         close(fd);
 304
 305         srand48_r(seeds[0], &td->bsrange_state);
 306         srand48_r(seeds[1], &td->verify_state);
 307         srand48_r(seeds[2], &td->rwmix_state);
 308
 309         if (td->sequential)
 310                 return 0;
 311
 312         if (repeatable)
 313                 seeds[3] = DEF_RANDSEED;
 314
 315         blocks = (td->io_size + td->min_bs - 1) / td->min_bs;
 316         num_maps = blocks / BLOCKS_PER_MAP;
 317         td->file_map = malloc(num_maps * sizeof(long));
 318         td->num_maps = num_maps;
 319         memset(td->file_map, 0, num_maps * sizeof(long));
 320
 321         srand48_r(seeds[3], &td->random_state);
 322         return 0;
 323 }
 324
 325 static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
 326 {
 327 #ifdef FIO_HAVE_CPU_AFFINITY
 328         unsigned int i;
 329
 330         CPU_ZERO(&cpumask);
 331
 332         for (i = 0; i < sizeof(int) * 8; i++) {
 333                 if ((1 << i) & cpu)
 334                         CPU_SET(i, &cpumask);
 335         }
 336 #endif
 337 }
 338
 339 static unsigned long get_mult(char c)
 340 {
 341         switch (c) {
 342                 case 'k':
 343                 case 'K':
 344                         return 1024;
 345                 case 'm':
 346                 case 'M':
 347                         return 1024 * 1024;
 348                 case 'g':
 349                 case 'G':
 350                         return 1024 * 1024 * 1024;
 351                 default:
 352                         return 1;
 353         }
 354 }
 355
 356 /*
 357  * convert string after '=' into decimal value, noting any size suffix
 358  */
 359 static int str_cnv(char *p, unsigned long long *val)
 360 {
 361         char *str;
 362         int len;
 363
 364         str = strchr(p, '=');
 365         if (!str)
 366                 return 1;
 367
 368         str++;
 369         len = strlen(str);
 370
 371         *val = strtoul(str, NULL, 10);
 372         if (*val == ULONG_MAX && errno == ERANGE)
 373                 return 1;
 374
 375         *val *= get_mult(str[len - 1]);
 376         return 0;
 377 }
 378
 379 static int check_strcnv(char *p, char *name, unsigned long long *val)
 380 {
 381         if (strncmp(p, name, strlen(name) - 1))
 382                 return 1;
 383
 384         return str_cnv(p, val);
 385 }
 386
 387 static void strip_blank_front(char **p)
 388 {
 389         char *s = *p;
 390
 391         while (isspace(*s))
 392                 s++;
 393 }
 394
 395 static void strip_blank_end(char *p)
 396 {
 397         char *s = p + strlen(p) - 1;
 398
 399         while (isspace(*s) || iscntrl(*s))
 400                 s--;
 401
 402         *(s + 1) = '\0';
 403 }
 404
 405 typedef int (str_cb_fn)(struct thread_data *, char *);
 406
 407 static int check_str(char *p, char *name, str_cb_fn *cb, struct thread_data *td)
 408 {
 409         char *s;
 410
 411         if (strncmp(p, name, strlen(name)))
 412                 return 1;
 413
 414         s = strstr(p, name);
 415         if (!s)
 416                 return 1;
 417
 418         s = strchr(s, '=');
 419         if (!s)
 420                 return 1;
 421
 422         s++;
 423         strip_blank_front(&s);
 424         return cb(td, s);
 425 }
 426
 427 static int check_strstore(char *p, char *name, char *dest)
 428 {
 429         char *s;
 430
 431         if (strncmp(p, name, strlen(name)))
 432                 return 1;
 433
 434         s = strstr(p, name);
 435         if (!s)
 436                 return 1;
 437
 438         s = strchr(p, '=');
 439         if (!s)
 440                 return 1;
 441
 442         s++;
 443         strip_blank_front(&s);
 444
 445         strcpy(dest, s);
 446         return 0;
 447 }
 448
 449 static int __check_range(char *str, unsigned long *val)
 450 {
 451         char suffix;
 452
 453         if (sscanf(str, "%lu%c", val, &suffix) == 2) {
 454                 *val *= get_mult(suffix);
 455                 return 0;
 456         }
 457
 458         if (sscanf(str, "%lu", val) == 1)
 459                 return 0;
 460
 461         return 1;
 462 }
 463
 464 static int check_range(char *p, char *name, unsigned long *s, unsigned long *e)
 465 {
 466         char option[128];
 467         char *str, *p1, *p2;
 468
 469         if (strncmp(p, name, strlen(name)))
 470                 return 1;
 471
 472         strcpy(option, p);
 473         p = option;
 474
 475         str = strstr(p, name);
 476         if (!str)
 477                 return 1;
 478
 479         p += strlen(name);
 480
 481         str = strchr(p, '=');
 482         if (!str)
 483                 return 1;
 484
 485         /*
 486          * 'p' now holds whatever is after the '=' sign
 487          */
 488         p1 = str + 1;
 489
 490         /*
 491          * terminate p1 at the '-' sign
 492          */
 493         p = strchr(p1, '-');
 494         if (!p)
 495                 return 1;
 496
 497         p2 = p + 1;
 498         *p = '\0';
 499
 500         if (!__check_range(p1, s) && !__check_range(p2, e))
 501                 return 0;
 502
 503         return 1;
 504 }
 505
 506 static int check_int(char *p, char *name, unsigned int *val)
 507 {
 508         char *str;
 509
 510         if (strncmp(p, name, strlen(name)))
 511                 return 1;
 512
 513         str = strstr(p, name);
 514         if (!str)
 515                 return 1;
 516
 517         str = strchr(p, '=');
 518         if (!str)
 519                 return 1;
 520
 521         str++;
 522
 523         if (sscanf(str, "%u", val) == 1)
 524                 return 0;
 525
 526         return 1;
 527 }
 528
 529 static int check_strset(char *p, char *name)
 530 {
 531         return strncmp(p, name, strlen(name));
 532 }
 533
 534 static int is_empty_or_comment(char *line)
 535 {
 536         unsigned int i;
 537
 538         for (i = 0; i < strlen(line); i++) {
 539                 if (line[i] == ';')
 540                         return 1;
 541                 if (!isspace(line[i]) && !iscntrl(line[i]))
 542                         return 0;
 543         }
 544
 545         return 1;
 546 }
 547
 548 static int str_rw_cb(struct thread_data *td, char *mem)
 549 {
 550         if (!strncmp(mem, "read", 4) || !strncmp(mem, "0", 1)) {
 551                 td->ddir = DDIR_READ;
 552                 td->sequential = 1;
 553                 return 0;
 554         } else if (!strncmp(mem, "randread", 8)) {
 555                 td->ddir = DDIR_READ;
 556                 td->sequential = 0;
 557                 return 0;
 558         } else if (!strncmp(mem, "write", 5) || !strncmp(mem, "1", 1)) {
 559                 td->ddir = DDIR_WRITE;
 560                 td->sequential = 1;
 561                 return 0;
 562         } else if (!strncmp(mem, "randwrite", 9)) {
 563                 td->ddir = DDIR_WRITE;
 564                 td->sequential = 0;
 565                 return 0;
 566         } else if (!strncmp(mem, "rw", 2)) {
 567                 td->ddir = 0;
 568                 td->iomix = 1;
 569                 td->sequential = 1;
 570                 return 0;
 571         } else if (!strncmp(mem, "randrw", 6)) {
 572                 td->ddir = 0;
 573                 td->iomix = 1;
 574                 td->sequential = 0;
 575                 return 0;
 576         }
 577
 578         fprintf(stderr, "bad data direction: %s\n", mem);
 579         return 1;
 580 }
 581
 582 static int str_verify_cb(struct thread_data *td, char *mem)
 583 {
 584         if (!strncmp(mem, "0", 1)) {
 585                 td->verify = VERIFY_NONE;
 586                 return 0;
 587         } else if (!strncmp(mem, "md5", 3) || !strncmp(mem, "1", 1)) {
 588                 td->verify = VERIFY_MD5;
 589                 return 0;
 590         } else if (!strncmp(mem, "crc32", 5)) {
 591                 td->verify = VERIFY_CRC32;
 592                 return 0;
 593         }
 594
 595         fprintf(stderr, "bad verify type: %s\n", mem);
 596         return 1;
 597 }
 598
 599 static int str_mem_cb(struct thread_data *td, char *mem)
 600 {
 601         if (!strncmp(mem, "malloc", 6)) {
 602                 td->mem_type = MEM_MALLOC;
 603                 return 0;
 604         } else if (!strncmp(mem, "shm", 3)) {
 605                 td->mem_type = MEM_SHM;
 606                 return 0;
 607         } else if (!strncmp(mem, "mmap", 4)) {
 608                 td->mem_type = MEM_MMAP;
 609                 return 0;
 610         }
 611
 612         fprintf(stderr, "bad mem type: %s\n", mem);
 613         return 1;
 614 }
 615
 616 static int str_ioengine_cb(struct thread_data *td, char *str)
 617 {
 618         if (!strncmp(str, "linuxaio", 8) || !strncmp(str, "aio", 3) ||
 619             !strncmp(str, "libaio", 6)) {
 620                 strcpy(td->io_engine_name, "libaio");
 621                 td->io_engine = FIO_LIBAIO;
 622                 return 0;
 623         } else if (!strncmp(str, "posixaio", 8)) {
 624                 strcpy(td->io_engine_name, "posixaio");
 625                 td->io_engine = FIO_POSIXAIO;
 626                 return 0;
 627         } else if (!strncmp(str, "sync", 4)) {
 628                 strcpy(td->io_engine_name, "sync");
 629                 td->io_engine = FIO_SYNCIO;
 630                 return 0;
 631         } else if (!strncmp(str, "mmap", 4)) {
 632                 strcpy(td->io_engine_name, "mmap");
 633                 td->io_engine = FIO_MMAPIO;
 634                 return 0;
 635         } else if (!strncmp(str, "sgio", 4)) {
 636                 strcpy(td->io_engine_name, "sgio");
 637                 td->io_engine = FIO_SGIO;
 638                 return 0;
 639         } else if (!strncmp(str, "splice", 6)) {
 640                 strcpy(td->io_engine_name, "splice");
 641                 td->io_engine = FIO_SPLICEIO;
 642                 return 0;
 643         }
 644
 645         fprintf(stderr, "bad ioengine type: %s\n", str);
 646         return 1;
 647 }
 648
 649 static int str_iolog_cb(struct thread_data *td, char *file)
 650 {
 651         strncpy(td->iolog_file, file, sizeof(td->iolog_file) - 1);
 652         return 0;
 653 }
 654
 655 int parse_jobs_ini(char *file)
 656 {
 657         unsigned int prioclass, prio, cpu, global, il;
 658         unsigned long long ull;
 659         unsigned long ul1, ul2;
 660         struct thread_data *td;
 661         char *string, *name;
 662         fpos_t off;
 663         FILE *f;
 664         char *p;
 665
 666         f = fopen(file, "r");
 667         if (!f) {
 668                 perror("fopen job file");
 669                 return 1;
 670         }
 671
 672         string = malloc(4096);
 673         name = malloc(256);
 674
 675         while ((p = fgets(string, 4096, f)) != NULL) {
 676                 if (is_empty_or_comment(p))
 677                         continue;
 678                 if (sscanf(p, "[%s]", name) != 1)
 679                         continue;
 680
 681                 global = !strncmp(name, "global", 6);
 682
 683                 name[strlen(name) - 1] = '\0';
 684
 685                 td = get_new_job(global, &def_thread);
 686                 if (!td)
 687                         return 1;
 688
 689                 fgetpos(f, &off);
 690                 while ((p = fgets(string, 4096, f)) != NULL) {
 691                         if (is_empty_or_comment(p))
 692                                 continue;
 693                         if (strstr(p, "["))
 694                                 break;
 695                         strip_blank_front(&p);
 696                         strip_blank_end(p);
 697
 698                         if (!check_int(p, "prio", &prio)) {
 699 #ifndef FIO_HAVE_IOPRIO
 700                                 fprintf(stderr, "io priorities not available\n");
 701                                 return 1;
 702 #endif
 703                                 td->ioprio |= prio;
 704                                 fgetpos(f, &off);
 705                                 continue;
 706                         }
 707                         if (!check_int(p, "prioclass", &prioclass)) {
 708 #ifndef FIO_HAVE_IOPRIO
 709                                 fprintf(stderr, "io priorities not available\n");
 710                                 return 1;
 711 #endif
 712                                 td->ioprio |= prioclass << IOPRIO_CLASS_SHIFT;
 713                                 fgetpos(f, &off);
 714                                 continue;
 715                         }
 716                         if (!check_int(p, "direct", &td->odirect)) {
 717                                 fgetpos(f, &off);
 718                                 continue;
 719                         }
 720                         if (!check_int(p, "rate", &td->rate)) {
 721                                 fgetpos(f, &off);
 722                                 continue;
 723                         }
 724                         if (!check_int(p, "ratemin", &td->ratemin)) {
 725                                 fgetpos(f, &off);
 726                                 continue;
 727                         }
 728                         if (!check_int(p, "ratecycle", &td->ratecycle)) {
 729                                 fgetpos(f, &off);
 730                                 continue;
 731                         }
 732                         if (!check_int(p, "thinktime", &td->thinktime)) {
 733                                 fgetpos(f, &off);
 734                                 continue;
 735                         }
 736                         if (!check_int(p, "cpumask", &cpu)) {
 737 #ifndef FIO_HAVE_CPU_AFFINITY
 738                                 fprintf(stderr, "cpu affinity not available\n");
 739                                 return 1;
 740 #endif
 741                                 fill_cpu_mask(td->cpumask, cpu);
 742                                 fgetpos(f, &off);
 743                                 continue;
 744                         }
 745                         if (!check_int(p, "fsync", &td->fsync_blocks)) {
 746                                 fgetpos(f, &off);
 747                                 td->end_fsync = 1;
 748                                 continue;
 749                         }
 750                         if (!check_int(p, "startdelay", &td->start_delay)) {
 751                                 fgetpos(f, &off);
 752                                 continue;
 753                         }
 754                         if (!check_int(p, "timeout", &td->timeout)) {
 755                                 fgetpos(f, &off);
 756                                 continue;
 757                         }
 758                         if (!check_int(p, "invalidate",&td->invalidate_cache)) {
 759                                 fgetpos(f, &off);
 760                                 continue;
 761                         }
 762                         if (!check_int(p, "iodepth", &td->iodepth)) {
 763                                 fgetpos(f, &off);
 764                                 continue;
 765                         }
 766                         if (!check_int(p, "sync", &td->sync_io)) {
 767                                 fgetpos(f, &off);
 768                                 continue;
 769                         }
 770                         if (!check_int(p, "bwavgtime", &td->bw_avg_time)) {
 771                                 fgetpos(f, &off);
 772                                 continue;
 773                         }
 774                         if (!check_int(p, "create_serialize", &td->create_serialize)) {
 775                                 fgetpos(f, &off);
 776                                 continue;
 777                         }
 778                         if (!check_int(p, "create_fsync", &td->create_fsync)) {
 779                                 fgetpos(f, &off);
 780                                 continue;
 781                         }
 782                         if (!check_int(p, "end_fsync", &td->end_fsync)) {
 783                                 fgetpos(f, &off);
 784                                 continue;
 785                         }
 786                         if (!check_int(p, "loops", &td->loops)) {
 787                                 fgetpos(f, &off);
 788                                 continue;
 789                         }
 790                         if (!check_int(p, "numjobs", &td->numjobs)) {
 791                                 fgetpos(f, &off);
 792                                 continue;
 793                         }
 794                         if (!check_int(p, "overwrite", &td->overwrite)) {
 795                                 fgetpos(f, &off);
 796                                 continue;
 797                         }
 798                         if (!check_int(p, "rwmixcycle", &td->rwmixcycle)) {
 799                                 fgetpos(f, &off);
 800                                 continue;
 801                         }
 802                         if (!check_int(p, "rwmixread", &il)) {
 803                                 if (il > 100)
 804                                         il = 100;
 805                                 td->rwmixread = il;
 806                                 fgetpos(f, &off);
 807                                 continue;
 808                         }
 809                         if (!check_int(p, "rwmixwrite", &il)) {
 810                                 if (il > 100)
 811                                         il = 100;
 812                                 td->rwmixread = 100 - il;
 813                                 fgetpos(f, &off);
 814                                 continue;
 815                         }
 816                         if (!check_int(p, "nice", &td->nice)) {
 817                                 fgetpos(f, &off);
 818                                 continue;
 819                         }
 820                         if (!check_range(p, "bsrange", &ul1, &ul2)) {
 821                                 if (ul1 > ul2) {
 822                                         td->max_bs = ul1;
 823                                         td->min_bs = ul2;
 824                                 } else {
 825                                         td->max_bs = ul2;
 826                                         td->min_bs = ul1;
 827                                 }
 828                                 fgetpos(f, &off);
 829                                 continue;
 830                         }
 831                         if (!check_strcnv(p, "bs", &ull)) {
 832                                 td->bs = ull;
 833                                 fgetpos(f, &off);
 834                                 continue;
 835                         }
 836                         if (!check_strcnv(p, "size", &td->file_size)) {
 837                                 fgetpos(f, &off);
 838                                 continue;
 839                         }
 840                         if (!check_strcnv(p, "offset", &td->file_offset)) {
 841                                 fgetpos(f, &off);
 842                                 continue;
 843                         }
 844                         if (!check_strcnv(p, "zonesize", &td->zone_size)) {
 845                                 fgetpos(f, &off);
 846                                 continue;
 847                         }
 848                         if (!check_strcnv(p, "zoneskip", &td->zone_skip)) {
 849                                 fgetpos(f, &off);
 850                                 continue;
 851                         }
 852                         if (!check_strcnv(p, "lockmem", &mlock_size)) {
 853                                 fgetpos(f, &off);
 854                                 continue;
 855                         }
 856                         if (!check_strstore(p, "directory", td->directory)) {
 857                                 fgetpos(f, &off);
 858                                 continue;
 859                         }
 860                         if (!check_str(p, "mem", str_mem_cb, td)) {
 861                                 fgetpos(f, &off);
 862                                 continue;
 863                         }
 864                         if (!check_str(p, "verify", str_verify_cb, td)) {
 865                                 fgetpos(f, &off);
 866                                 continue;
 867                         }
 868                         if (!check_str(p, "rw", str_rw_cb, td)) {
 869                                 fgetpos(f, &off);
 870                                 continue;
 871                         }
 872                         if (!check_str(p, "ioengine", str_ioengine_cb, td)) {
 873                                 fgetpos(f, &off);
 874                                 continue;
 875                         }
 876                         if (!check_strset(p, "create")) {
 877                                 td->create_file = 1;
 878                                 fgetpos(f, &off);
 879                                 continue;
 880                         }
 881                         if (!check_strset(p, "exitall")) {
 882                                 exitall_on_terminate = 1;
 883                                 fgetpos(f, &off);
 884                                 continue;
 885                         }
 886                         if (!check_strset(p, "stonewall")) {
 887                                 td->stonewall = 1;
 888                                 fgetpos(f, &off);
 889                                 continue;
 890                         }
 891                         if (!check_strset(p, "thread")) {
 892                                 td->use_thread = 1;
 893                                 fgetpos(f, &off);
 894                                 continue;
 895                         }
 896                         if (!check_str(p, "iolog", str_iolog_cb, td)) {
 897                                 printf("got read iolog\n");
 898                                 td->read_iolog = 1;
 899                                 td->write_iolog = 0;
 900                                 fgetpos(f, &off);
 901                                 continue;
 902                         }
 903                         if (!td->read_iolog &&
 904                             !check_str(p, "write_iolog", str_iolog_cb, td)) {
 905                                 printf("got write iolog\n");
 906                                 td->write_iolog = 1;
 907                                 fgetpos(f, &off);
 908                                 continue;
 909                         }
 910
 911                         printf("Client%d: bad option %s\n",td->thread_number,p);
 912                         return 1;
 913                 }
 914                 fsetpos(f, &off);
 915
 916                 if (add_job(td, name, 0))
 917                         return 1;
 918         }
 919
 920         free(string);
 921         free(name);
 922         fclose(f);
 923         return 0;
 924 }
 925
 926 static int fill_def_thread(void)
 927 {
 928         memset(&def_thread, 0, sizeof(def_thread));
 929
 930         if (fio_getaffinity(getpid(), &def_thread.cpumask) == -1) {
 931                 perror("sched_getaffinity");
 932                 return 1;
 933         }
 934
 935         /*
 936          * fill globals
 937          */
 938         def_thread.ddir = DDIR_READ;
 939         def_thread.iomix = 0;
 940         def_thread.bs = DEF_BS;
 941         def_thread.min_bs = -1;
 942         def_thread.max_bs = -1;
 943         def_thread.io_engine = DEF_IO_ENGINE;
 944         strcpy(def_thread.io_engine_name, DEF_IO_ENGINE_NAME);
 945         def_thread.odirect = DEF_ODIRECT;
 946         def_thread.ratecycle = DEF_RATE_CYCLE;
 947         def_thread.sequential = DEF_SEQUENTIAL;
 948         def_thread.timeout = DEF_TIMEOUT;
 949         def_thread.create_file = DEF_CREATE;
 950         def_thread.overwrite = DEF_OVERWRITE;
 951         def_thread.invalidate_cache = DEF_INVALIDATE;
 952         def_thread.sync_io = DEF_SYNCIO;
 953         def_thread.mem_type = MEM_MALLOC;
 954         def_thread.bw_avg_time = DEF_BWAVGTIME;
 955         def_thread.create_serialize = DEF_CREATE_SER;
 956         def_thread.create_fsync = DEF_CREATE_FSYNC;
 957         def_thread.loops = DEF_LOOPS;
 958         def_thread.verify = DEF_VERIFY;
 959         def_thread.stonewall = DEF_STONEWALL;
 960         def_thread.numjobs = DEF_NUMJOBS;
 961         def_thread.use_thread = DEF_USE_THREAD;
 962         def_thread.rwmixcycle = DEF_RWMIX_CYCLE;
 963         def_thread.rwmixread = DEF_RWMIX_READ;
 964         def_thread.nice = DEF_NICE;
 965 #ifdef FIO_HAVE_DISK_UTIL
 966         def_thread.do_disk_util = 1;
 967 #endif
 968
 969         return 0;
 970 }
 971
 972 static void usage(char *name)
 973 {
 974         printf("%s\n", fio_version_string);
 975         printf("\t-s IO is sequential\n");
 976         printf("\t-b Block size in KiB for each IO\n");
 977         printf("\t-t Runtime in seconds\n");
 978         printf("\t-R Exit all threads on failure to meet rate goal\n");
 979         printf("\t-o Use O_DIRECT\n");
 980         printf("\t-l Generate per-job latency logs\n");
 981         printf("\t-w Generate per-job bandwidth logs\n");
 982         printf("\t-f Job file (Required)\n");
 983         printf("\t-v Print version info and exit\n");
 984 }
 985
 986 static void parse_cmd_line(int argc, char *argv[])
 987 {
 988         int c;
 989
 990         while ((c = getopt(argc, argv, "s:b:t:r:R:o:f:lwvh")) != EOF) {
 991                 switch (c) {
 992                         case 's':
 993                                 def_thread.sequential = !!atoi(optarg);
 994                                 break;
 995                         case 'b':
 996                                 def_thread.bs = atoi(optarg);
 997                                 def_thread.bs <<= 10;
 998                                 if (!def_thread.bs) {
 999                                         printf("bad block size\n");
1000                                         def_thread.bs = DEF_BS;
1001                                 }
1002                                 break;
1003                         case 't':
1004                                 def_thread.timeout = atoi(optarg);
1005                                 break;
1006                         case 'r':
1007                                 repeatable = !!atoi(optarg);
1008                                 break;
1009                         case 'R':
1010                                 rate_quit = !!atoi(optarg);
1011                                 break;
1012                         case 'o':
1013                                 def_thread.odirect = !!atoi(optarg);
1014                                 break;
1015                         case 'f':
1016                                 ini_file = strdup(optarg);
1017                                 break;
1018                         case 'l':
1019                                 write_lat_log = 1;
1020                                 break;
1021                         case 'w':
1022                                 write_bw_log = 1;
1023                                 break;
1024                         case 'h':
1025                                 usage(argv[0]);
1026                                 exit(0);
1027                         case 'v':
1028                                 printf("%s\n", fio_version_string);
1029                                 exit(0);
1030                 }
1031         }
1032
1033         if (!ini_file && argc > 1 && argv[argc - 1][0] != '-')
1034                 ini_file = strdup(argv[argc - 1]);
1035 }
1036
1037 static void free_shm(void)
1038 {
1039         struct shmid_ds sbuf;
1040
1041         if (threads) {
1042                 shmdt(threads);
1043                 threads = NULL;
1044                 shmctl(shm_id, IPC_RMID, &sbuf);
1045         }
1046 }
1047
1048 static int setup_thread_area(void)
1049 {
1050         /*
1051          * 1024 is too much on some machines, scale max_jobs if
1052          * we get a failure that looks like too large a shm segment
1053          */
1054         do {
1055                 int s = max_jobs * sizeof(struct thread_data);
1056
1057                 shm_id = shmget(0, s, IPC_CREAT | 0600);
1058                 if (shm_id != -1)
1059                         break;
1060                 if (errno != EINVAL) {
1061                         perror("shmget");
1062                         break;
1063                 }
1064
1065                 max_jobs >>= 1;
1066         } while (max_jobs);
1067
1068         if (shm_id == -1)
1069                 return 1;
1070
1071         threads = shmat(shm_id, NULL, 0);
1072         if (threads == (void *) -1) {
1073                 perror("shmat");
1074                 return 1;
1075         }
1076
1077         atexit(free_shm);
1078         return 0;
1079 }
1080
1081 int parse_options(int argc, char *argv[])
1082 {
1083         if (setup_thread_area())
1084                 return 1;
1085         if (fill_def_thread())
1086                 return 1;
1087
1088         parse_cmd_line(argc, argv);
1089
1090         if (!ini_file) {
1091                 printf("Need job file\n");
1092                 usage(argv[0]);
1093                 return 1;
1094         }
1095
1096         if (parse_jobs_ini(ini_file)) {
1097                 usage(argv[0]);
1098                 return 1;
1099         }
1100
1101         return 0;
1102 }