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