options.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <unistd.h>
   4 #include <ctype.h>
   5 #include <string.h>
   6 #include <getopt.h>
   7 #include <assert.h>
   8
   9 #include "fio.h"
  10 #include "parse.h"
  11
  12 #define td_var_offset(var)      ((size_t) &((struct thread_options *)0)->var)
  13
  14 /*
  15  * Check if mmap/mmaphuge has a :/foo/bar/file at the end. If so, return that.
  16  */
  17 static char *get_opt_postfix(const char *str)
  18 {
  19         char *p = strstr(str, ":");
  20
  21         if (!p)
  22                 return NULL;
  23
  24         p++;
  25         strip_blank_front(&p);
  26         strip_blank_end(p);
  27         return strdup(p);
  28 }
  29
  30 static int str_rw_cb(void *data, const char *str)
  31 {
  32         struct thread_data *td = data;
  33         char *nr = get_opt_postfix(str);
  34
  35         td->o.ddir_nr = 1;
  36         if (nr)
  37                 td->o.ddir_nr = atoi(nr);
  38
  39         return 0;
  40 }
  41
  42 static int str_mem_cb(void *data, const char *mem)
  43 {
  44         struct thread_data *td = data;
  45
  46         if (td->o.mem_type == MEM_MMAPHUGE || td->o.mem_type == MEM_MMAP) {
  47                 td->mmapfile = get_opt_postfix(mem);
  48                 if (td->o.mem_type == MEM_MMAPHUGE && !td->mmapfile) {
  49                         log_err("fio: mmaphuge:/path/to/file\n");
  50                         return 1;
  51                 }
  52         }
  53
  54         return 0;
  55 }
  56
  57 static int str_lockmem_cb(void fio_unused *data, unsigned long *val)
  58 {
  59         mlock_size = *val;
  60         return 0;
  61 }
  62
  63 #ifdef FIO_HAVE_IOPRIO
  64 static int str_prioclass_cb(void *data, unsigned int *val)
  65 {
  66         struct thread_data *td = data;
  67         unsigned short mask;
  68
  69         /*
  70          * mask off old class bits, str_prio_cb() may have set a default class
  71          */
  72         mask = (1 << IOPRIO_CLASS_SHIFT) - 1;
  73         td->ioprio &= mask;
  74
  75         td->ioprio |= *val << IOPRIO_CLASS_SHIFT;
  76         return 0;
  77 }
  78
  79 static int str_prio_cb(void *data, unsigned int *val)
  80 {
  81         struct thread_data *td = data;
  82
  83         td->ioprio |= *val;
  84
  85         /*
  86          * If no class is set, assume BE
  87          */
  88         if ((td->ioprio >> IOPRIO_CLASS_SHIFT) == 0)
  89                 td->ioprio |= IOPRIO_CLASS_BE << IOPRIO_CLASS_SHIFT;
  90
  91         return 0;
  92 }
  93 #endif
  94
  95 static int str_exitall_cb(void)
  96 {
  97         exitall_on_terminate = 1;
  98         return 0;
  99 }
 100
 101 static void fill_cpu_mask(os_cpu_mask_t cpumask, int cpu)
 102 {
 103 #ifdef FIO_HAVE_CPU_AFFINITY
 104         unsigned int i;
 105
 106         CPU_ZERO(&cpumask);
 107
 108         for (i = 0; i < sizeof(int) * 8; i++) {
 109                 if ((1 << i) & cpu)
 110                         CPU_SET(i, &cpumask);
 111         }
 112 #endif
 113 }
 114
 115 static int str_cpumask_cb(void *data, unsigned int *val)
 116 {
 117         struct thread_data *td = data;
 118
 119         fill_cpu_mask(td->o.cpumask, *val);
 120         return 0;
 121 }
 122
 123 static int str_fst_cb(void *data, const char *str)
 124 {
 125         struct thread_data *td = data;
 126         char *nr = get_opt_postfix(str);
 127
 128         td->file_service_nr = 1;
 129         if (nr)
 130                 td->file_service_nr = atoi(nr);
 131
 132         return 0;
 133 }
 134
 135 static int str_filename_cb(void *data, const char *input)
 136 {
 137         struct thread_data *td = data;
 138         char *fname, *str, *p;
 139
 140         p = str = strdup(input);
 141
 142         strip_blank_front(&str);
 143         strip_blank_end(str);
 144
 145         if (!td->files_index)
 146                 td->o.nr_files = 0;
 147
 148         while ((fname = strsep(&str, ":")) != NULL) {
 149                 if (!strlen(fname))
 150                         break;
 151                 add_file(td, fname);
 152                 td->o.nr_files++;
 153         }
 154
 155         free(p);
 156         return 0;
 157 }
 158
 159 static int str_directory_cb(void *data, const char fio_unused *str)
 160 {
 161         struct thread_data *td = data;
 162         struct stat sb;
 163
 164         if (lstat(td->o.directory, &sb) < 0) {
 165                 log_err("fio: %s is not a directory\n", td->o.directory);
 166                 td_verror(td, errno, "lstat");
 167                 return 1;
 168         }
 169         if (!S_ISDIR(sb.st_mode)) {
 170                 log_err("fio: %s is not a directory\n", td->o.directory);
 171                 return 1;
 172         }
 173
 174         return 0;
 175 }
 176
 177 static int str_opendir_cb(void *data, const char fio_unused *str)
 178 {
 179         struct thread_data *td = data;
 180
 181         if (!td->files_index)
 182                 td->o.nr_files = 0;
 183
 184         return add_dir_files(td, td->o.opendir);
 185 }
 186
 187
 188 #define __stringify_1(x)        #x
 189 #define __stringify(x)          __stringify_1(x)
 190
 191 /*
 192  * Map of job/command line options
 193  */
 194 static struct fio_option options[] = {
 195         {
 196                 .name   = "description",
 197                 .type   = FIO_OPT_STR_STORE,
 198                 .off1   = td_var_offset(description),
 199                 .help   = "Text job description",
 200         },
 201         {
 202                 .name   = "name",
 203                 .type   = FIO_OPT_STR_STORE,
 204                 .off1   = td_var_offset(name),
 205                 .help   = "Name of this job",
 206         },
 207         {
 208                 .name   = "directory",
 209                 .type   = FIO_OPT_STR_STORE,
 210                 .off1   = td_var_offset(directory),
 211                 .cb     = str_directory_cb,
 212                 .help   = "Directory to store files in",
 213         },
 214         {
 215                 .name   = "filename",
 216                 .type   = FIO_OPT_STR_STORE,
 217                 .off1   = td_var_offset(filename),
 218                 .cb     = str_filename_cb,
 219                 .help   = "File(s) to use for the workload",
 220         },
 221         {
 222                 .name   = "opendir",
 223                 .type   = FIO_OPT_STR_STORE,
 224                 .off1   = td_var_offset(opendir),
 225                 .cb     = str_opendir_cb,
 226                 .help   = "Recursively add files from this directory and down",
 227         },
 228         {
 229                 .name   = "rw",
 230                 .alias  = "readwrite",
 231                 .type   = FIO_OPT_STR,
 232                 .cb     = str_rw_cb,
 233                 .off1   = td_var_offset(td_ddir),
 234                 .help   = "IO direction",
 235                 .def    = "read",
 236                 .posval = {
 237                           { .ival = "read",
 238                             .oval = TD_DDIR_READ,
 239                             .help = "Sequential read",
 240                           },
 241                           { .ival = "write",
 242                             .oval = TD_DDIR_WRITE,
 243                             .help = "Sequential write",
 244                           },
 245                           { .ival = "randread",
 246                             .oval = TD_DDIR_RANDREAD,
 247                             .help = "Random read",
 248                           },
 249                           { .ival = "randwrite",
 250                             .oval = TD_DDIR_RANDWRITE,
 251                             .help = "Random write",
 252                           },
 253                           { .ival = "rw",
 254                             .oval = TD_DDIR_RW,
 255                             .help = "Sequential read and write mix",
 256                           },
 257                           { .ival = "randrw",
 258                             .oval = TD_DDIR_RANDRW,
 259                             .help = "Random read and write mix"
 260                           },
 261                 },
 262         },
 263         {
 264                 .name   = "fadvise_hint",
 265                 .type   = FIO_OPT_BOOL,
 266                 .off1   = td_var_offset(fadvise_hint),
 267                 .help   = "Use fadvise() to advise the kernel on IO pattern",
 268                 .def    = "1",
 269         },
 270         {
 271                 .name   = "ioengine",
 272                 .type   = FIO_OPT_STR_STORE,
 273                 .off1   = td_var_offset(ioengine),
 274                 .help   = "IO engine to use",
 275                 .def    = "sync",
 276                 .posval = {
 277                           { .ival = "sync",
 278                             .help = "Use read/write",
 279                           },
 280 #ifdef FIO_HAVE_LIBAIO
 281                           { .ival = "libaio",
 282                             .help = "Linux native asynchronous IO",
 283                           },
 284 #endif
 285 #ifdef FIO_HAVE_POSIXAIO
 286                           { .ival = "posixaio",
 287                             .help = "POSIX asynchronous IO",
 288                           },
 289 #endif
 290                           { .ival = "mmap",
 291                             .help = "Memory mapped IO",
 292                           },
 293 #ifdef FIO_HAVE_SPLICE
 294                           { .ival = "splice",
 295                             .help = "splice/vmsplice based IO",
 296                           },
 297 #endif
 298 #ifdef FIO_HAVE_SGIO
 299                           { .ival = "sg",
 300                             .help = "SCSI generic v3 IO",
 301                           },
 302 #endif
 303                           { .ival = "null",
 304                             .help = "Testing engine (no data transfer)",
 305                           },
 306                           { .ival = "net",
 307                             .help = "Network IO",
 308                           },
 309 #ifdef FIO_HAVE_SYSLET
 310                           { .ival = "syslet-rw",
 311                             .help = "syslet enabled async pread/pwrite IO",
 312                           },
 313 #endif
 314                           { .ival = "cpuio",
 315                             .help = "CPU cycler burner engine",
 316                           },
 317 #ifdef FIO_HAVE_GUASI
 318                           { .ival = "guasi",
 319                             .help = "GUASI IO engine",
 320                           },
 321 #endif
 322                           { .ival = "external",
 323                             .help = "Load external engine (append name)",
 324                           },
 325                 },
 326         },
 327         {
 328                 .name   = "iodepth",
 329                 .type   = FIO_OPT_INT,
 330                 .off1   = td_var_offset(iodepth),
 331                 .help   = "Amount of IO buffers to keep in flight",
 332                 .def    = "1",
 333         },
 334         {
 335                 .name   = "iodepth_batch",
 336                 .type   = FIO_OPT_INT,
 337                 .off1   = td_var_offset(iodepth_batch),
 338                 .help   = "Number of IO to submit in one go",
 339         },
 340         {
 341                 .name   = "iodepth_low",
 342                 .type   = FIO_OPT_INT,
 343                 .off1   = td_var_offset(iodepth_low),
 344                 .help   = "Low water mark for queuing depth",
 345         },
 346         {
 347                 .name   = "size",
 348                 .type   = FIO_OPT_STR_VAL,
 349                 .off1   = td_var_offset(size),
 350                 .help   = "Total size of device or files",
 351         },
 352         {
 353                 .name   = "filesize",
 354                 .type   = FIO_OPT_STR_VAL,
 355                 .off1   = td_var_offset(file_size_low),
 356                 .off2   = td_var_offset(file_size_high),
 357                 .help   = "Size of individual files",
 358         },
 359         {
 360                 .name   = "bs",
 361                 .alias  = "blocksize",
 362                 .type   = FIO_OPT_STR_VAL_INT,
 363                 .off1   = td_var_offset(bs[DDIR_READ]),
 364                 .off2   = td_var_offset(bs[DDIR_WRITE]),
 365                 .help   = "Block size unit",
 366                 .def    = "4k",
 367         },
 368         {
 369                 .name   = "bsrange",
 370                 .alias  = "blocksize_range",
 371                 .type   = FIO_OPT_RANGE,
 372                 .off1   = td_var_offset(min_bs[DDIR_READ]),
 373                 .off2   = td_var_offset(max_bs[DDIR_READ]),
 374                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
 375                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
 376                 .help   = "Set block size range (in more detail than bs)",
 377         },
 378         {
 379                 .name   = "bs_unaligned",
 380                 .alias  = "blocksize_unaligned",
 381                 .type   = FIO_OPT_STR_SET,
 382                 .off1   = td_var_offset(bs_unaligned),
 383                 .help   = "Don't sector align IO buffer sizes",
 384         },
 385         {
 386                 .name   = "offset",
 387                 .type   = FIO_OPT_STR_VAL,
 388                 .off1   = td_var_offset(start_offset),
 389                 .help   = "Start IO from this offset",
 390                 .def    = "0",
 391         },
 392         {
 393                 .name   = "randrepeat",
 394                 .type   = FIO_OPT_BOOL,
 395                 .off1   = td_var_offset(rand_repeatable),
 396                 .help   = "Use repeatable random IO pattern",
 397                 .def    = "1",
 398         },
 399         {
 400                 .name   = "norandommap",
 401                 .type   = FIO_OPT_STR_SET,
 402                 .off1   = td_var_offset(norandommap),
 403                 .help   = "Accept potential duplicate random blocks",
 404         },
 405         {
 406                 .name   = "nrfiles",
 407                 .type   = FIO_OPT_INT,
 408                 .off1   = td_var_offset(nr_files),
 409                 .help   = "Split job workload between this number of files",
 410                 .def    = "1",
 411         },
 412         {
 413                 .name   = "openfiles",
 414                 .type   = FIO_OPT_INT,
 415                 .off1   = td_var_offset(open_files),
 416                 .help   = "Number of files to keep open at the same time",
 417         },
 418         {
 419                 .name   = "file_service_type",
 420                 .type   = FIO_OPT_STR,
 421                 .cb     = str_fst_cb,
 422                 .off1   = td_var_offset(file_service_type),
 423                 .help   = "How to select which file to service next",
 424                 .def    = "roundrobin",
 425                 .posval = {
 426                           { .ival = "random",
 427                             .oval = FIO_FSERVICE_RANDOM,
 428                             .help = "Choose a file at random",
 429                           },
 430                           { .ival = "roundrobin",
 431                             .oval = FIO_FSERVICE_RR,
 432                             .help = "Round robin select files",
 433                           },
 434                 },
 435         },
 436         {
 437                 .name   = "fsync",
 438                 .type   = FIO_OPT_INT,
 439                 .off1   = td_var_offset(fsync_blocks),
 440                 .help   = "Issue fsync for writes every given number of blocks",
 441                 .def    = "0",
 442         },
 443         {
 444                 .name   = "direct",
 445                 .type   = FIO_OPT_BOOL,
 446                 .off1   = td_var_offset(odirect),
 447                 .help   = "Use O_DIRECT IO (negates buffered)",
 448                 .def    = "0",
 449         },
 450         {
 451                 .name   = "buffered",
 452                 .type   = FIO_OPT_BOOL,
 453                 .off1   = td_var_offset(odirect),
 454                 .neg    = 1,
 455                 .help   = "Use buffered IO (negates direct)",
 456                 .def    = "1",
 457         },
 458         {
 459                 .name   = "overwrite",
 460                 .type   = FIO_OPT_BOOL,
 461                 .off1   = td_var_offset(overwrite),
 462                 .help   = "When writing, set whether to overwrite current data",
 463                 .def    = "0",
 464         },
 465         {
 466                 .name   = "loops",
 467                 .type   = FIO_OPT_INT,
 468                 .off1   = td_var_offset(loops),
 469                 .help   = "Number of times to run the job",
 470                 .def    = "1",
 471         },
 472         {
 473                 .name   = "numjobs",
 474                 .type   = FIO_OPT_INT,
 475                 .off1   = td_var_offset(numjobs),
 476                 .help   = "Duplicate this job this many times",
 477                 .def    = "1",
 478         },
 479         {
 480                 .name   = "startdelay",
 481                 .type   = FIO_OPT_INT,
 482                 .off1   = td_var_offset(start_delay),
 483                 .help   = "Only start job when this period has passed",
 484                 .def    = "0",
 485         },
 486         {
 487                 .name   = "runtime",
 488                 .alias  = "timeout",
 489                 .type   = FIO_OPT_STR_VAL_TIME,
 490                 .off1   = td_var_offset(timeout),
 491                 .help   = "Stop workload when this amount of time has passed",
 492                 .def    = "0",
 493         },
 494         {
 495                 .name   = "time_based",
 496                 .type   = FIO_OPT_STR_SET,
 497                 .off1   = td_var_offset(time_based),
 498                 .help   = "Keep running until runtime/timeout is met",
 499         },
 500         {
 501                 .name   = "mem",
 502                 .alias  = "iomem",
 503                 .type   = FIO_OPT_STR,
 504                 .cb     = str_mem_cb,
 505                 .off1   = td_var_offset(mem_type),
 506                 .help   = "Backing type for IO buffers",
 507                 .def    = "malloc",
 508                 .posval = {
 509                           { .ival = "malloc",
 510                             .oval = MEM_MALLOC,
 511                             .help = "Use malloc(3) for IO buffers",
 512                           },
 513                           { .ival = "shm",
 514                             .oval = MEM_SHM,
 515                             .help = "Use shared memory segments for IO buffers",
 516                           },
 517 #ifdef FIO_HAVE_HUGETLB
 518                           { .ival = "shmhuge",
 519                             .oval = MEM_SHMHUGE,
 520                             .help = "Like shm, but use huge pages",
 521                           },
 522 #endif
 523                           { .ival = "mmap",
 524                             .oval = MEM_MMAP,
 525                             .help = "Use mmap(2) (file or anon) for IO buffers",
 526                           },
 527 #ifdef FIO_HAVE_HUGETLB
 528                           { .ival = "mmaphuge",
 529                             .oval = MEM_MMAPHUGE,
 530                             .help = "Like mmap, but use huge pages",
 531                           },
 532 #endif
 533                   },
 534         },
 535         {
 536                 .name   = "verify",
 537                 .type   = FIO_OPT_STR,
 538                 .off1   = td_var_offset(verify),
 539                 .help   = "Verify data written",
 540                 .def    = "0",
 541                 .posval = {
 542                           { .ival = "0",
 543                             .oval = VERIFY_NONE,
 544                             .help = "Don't do IO verification",
 545                           },
 546                           { .ival = "crc32",
 547                             .oval = VERIFY_CRC32,
 548                             .help = "Use crc32 checksums for verification",
 549                           },
 550                           { .ival = "md5",
 551                             .oval = VERIFY_MD5,
 552                             .help = "Use md5 checksums for verification",
 553                           },
 554                           {
 555                             .ival = "null",
 556                             .oval = VERIFY_NULL,
 557                             .help = "Pretend to verify",
 558                           },
 559                 },
 560         },
 561         {
 562                 .name   = "verifysort",
 563                 .type   = FIO_OPT_BOOL,
 564                 .off1   = td_var_offset(verifysort),
 565                 .help   = "Sort written verify blocks for read back",
 566                 .def    = "1",
 567         },
 568         {
 569                 .name   = "write_iolog",
 570                 .type   = FIO_OPT_STR_STORE,
 571                 .off1   = td_var_offset(write_iolog_file),
 572                 .help   = "Store IO pattern to file",
 573         },
 574         {
 575                 .name   = "read_iolog",
 576                 .type   = FIO_OPT_STR_STORE,
 577                 .off1   = td_var_offset(read_iolog_file),
 578                 .help   = "Playback IO pattern from file",
 579         },
 580         {
 581                 .name   = "exec_prerun",
 582                 .type   = FIO_OPT_STR_STORE,
 583                 .off1   = td_var_offset(exec_prerun),
 584                 .help   = "Execute this file prior to running job",
 585         },
 586         {
 587                 .name   = "exec_postrun",
 588                 .type   = FIO_OPT_STR_STORE,
 589                 .off1   = td_var_offset(exec_postrun),
 590                 .help   = "Execute this file after running job",
 591         },
 592 #ifdef FIO_HAVE_IOSCHED_SWITCH
 593         {
 594                 .name   = "ioscheduler",
 595                 .type   = FIO_OPT_STR_STORE,
 596                 .off1   = td_var_offset(ioscheduler),
 597                 .help   = "Use this IO scheduler on the backing device",
 598         },
 599 #endif
 600         {
 601                 .name   = "zonesize",
 602                 .type   = FIO_OPT_STR_VAL,
 603                 .off1   = td_var_offset(zone_size),
 604                 .help   = "Give size of an IO zone",
 605                 .def    = "0",
 606         },
 607         {
 608                 .name   = "zoneskip",
 609                 .type   = FIO_OPT_STR_VAL,
 610                 .off1   = td_var_offset(zone_skip),
 611                 .help   = "Space between IO zones",
 612                 .def    = "0",
 613         },
 614         {
 615                 .name   = "lockmem",
 616                 .type   = FIO_OPT_STR_VAL,
 617                 .cb     = str_lockmem_cb,
 618                 .help   = "Lock down this amount of memory",
 619                 .def    = "0",
 620         },
 621         {
 622                 .name   = "rwmixcycle",
 623                 .type   = FIO_OPT_INT,
 624                 .off1   = td_var_offset(rwmixcycle),
 625                 .help   = "Cycle period for mixed read/write workloads (msec)",
 626                 .def    = "500",
 627         },
 628         {
 629                 .name   = "rwmixread",
 630                 .type   = FIO_OPT_INT,
 631                 .off1   = td_var_offset(rwmix[DDIR_READ]),
 632                 .maxval = 100,
 633                 .help   = "Percentage of mixed workload that is reads",
 634                 .def    = "50",
 635         },
 636         {
 637                 .name   = "rwmixwrite",
 638                 .type   = FIO_OPT_INT,
 639                 .off1   = td_var_offset(rwmix[DDIR_WRITE]),
 640                 .maxval = 100,
 641                 .help   = "Percentage of mixed workload that is writes",
 642                 .def    = "50",
 643         },
 644         {
 645                 .name   = "nice",
 646                 .type   = FIO_OPT_INT,
 647                 .off1   = td_var_offset(nice),
 648                 .help   = "Set job CPU nice value",
 649                 .minval = -19,
 650                 .maxval = 20,
 651                 .def    = "0",
 652         },
 653 #ifdef FIO_HAVE_IOPRIO
 654         {
 655                 .name   = "prio",
 656                 .type   = FIO_OPT_INT,
 657                 .cb     = str_prio_cb,
 658                 .help   = "Set job IO priority value",
 659                 .minval = 0,
 660                 .maxval = 7,
 661         },
 662         {
 663                 .name   = "prioclass",
 664                 .type   = FIO_OPT_INT,
 665                 .cb     = str_prioclass_cb,
 666                 .help   = "Set job IO priority class",
 667                 .minval = 0,
 668                 .maxval = 3,
 669         },
 670 #endif
 671         {
 672                 .name   = "thinktime",
 673                 .type   = FIO_OPT_INT,
 674                 .off1   = td_var_offset(thinktime),
 675                 .help   = "Idle time between IO buffers (usec)",
 676                 .def    = "0",
 677         },
 678         {
 679                 .name   = "thinktime_spin",
 680                 .type   = FIO_OPT_INT,
 681                 .off1   = td_var_offset(thinktime_spin),
 682                 .help   = "Start think time by spinning this amount (usec)",
 683                 .def    = "0",
 684         },
 685         {
 686                 .name   = "thinktime_blocks",
 687                 .type   = FIO_OPT_INT,
 688                 .off1   = td_var_offset(thinktime_blocks),
 689                 .help   = "IO buffer period between 'thinktime'",
 690                 .def    = "1",
 691         },
 692         {
 693                 .name   = "rate",
 694                 .type   = FIO_OPT_INT,
 695                 .off1   = td_var_offset(rate),
 696                 .help   = "Set bandwidth rate",
 697         },
 698         {
 699                 .name   = "ratemin",
 700                 .type   = FIO_OPT_INT,
 701                 .off1   = td_var_offset(ratemin),
 702                 .help   = "Job must meet this rate or it will be shutdown",
 703         },
 704         {
 705                 .name   = "rate_iops",
 706                 .type   = FIO_OPT_INT,
 707                 .off1   = td_var_offset(rate_iops),
 708                 .help   = "Limit IO used to this number of IO operations/sec",
 709         },
 710         {
 711                 .name   = "rate_iops_min",
 712                 .type   = FIO_OPT_INT,
 713                 .off1   = td_var_offset(rate_iops_min),
 714                 .help   = "Job must meet this rate or it will be shutdown",
 715         },
 716         {
 717                 .name   = "ratecycle",
 718                 .type   = FIO_OPT_INT,
 719                 .off1   = td_var_offset(ratecycle),
 720                 .help   = "Window average for rate limits (msec)",
 721                 .def    = "1000",
 722         },
 723         {
 724                 .name   = "invalidate",
 725                 .type   = FIO_OPT_BOOL,
 726                 .off1   = td_var_offset(invalidate_cache),
 727                 .help   = "Invalidate buffer/page cache prior to running job",
 728                 .def    = "1",
 729         },
 730         {
 731                 .name   = "sync",
 732                 .type   = FIO_OPT_BOOL,
 733                 .off1   = td_var_offset(sync_io),
 734                 .help   = "Use O_SYNC for buffered writes",
 735                 .def    = "0",
 736         },
 737         {
 738                 .name   = "bwavgtime",
 739                 .type   = FIO_OPT_INT,
 740                 .off1   = td_var_offset(bw_avg_time),
 741                 .help   = "Time window over which to calculate bandwidth (msec)",
 742                 .def    = "500",
 743         },
 744         {
 745                 .name   = "create_serialize",
 746                 .type   = FIO_OPT_BOOL,
 747                 .off1   = td_var_offset(create_serialize),
 748                 .help   = "Serialize creating of job files",
 749                 .def    = "1",
 750         },
 751         {
 752                 .name   = "create_fsync",
 753                 .type   = FIO_OPT_BOOL,
 754                 .off1   = td_var_offset(create_fsync),
 755                 .help   = "Fsync file after creation",
 756                 .def    = "1",
 757         },
 758         {
 759                 .name   = "cpuload",
 760                 .type   = FIO_OPT_INT,
 761                 .off1   = td_var_offset(cpuload),
 762                 .help   = "Use this percentage of CPU",
 763         },
 764         {
 765                 .name   = "cpuchunks",
 766                 .type   = FIO_OPT_INT,
 767                 .off1   = td_var_offset(cpucycle),
 768                 .help   = "Length of the CPU burn cycles (usecs)",
 769                 .def    = "50000",
 770         },
 771 #ifdef FIO_HAVE_CPU_AFFINITY
 772         {
 773                 .name   = "cpumask",
 774                 .type   = FIO_OPT_INT,
 775                 .cb     = str_cpumask_cb,
 776                 .help   = "CPU affinity mask",
 777         },
 778 #endif
 779         {
 780                 .name   = "end_fsync",
 781                 .type   = FIO_OPT_BOOL,
 782                 .off1   = td_var_offset(end_fsync),
 783                 .help   = "Include fsync at the end of job",
 784                 .def    = "0",
 785         },
 786         {
 787                 .name   = "fsync_on_close",
 788                 .type   = FIO_OPT_BOOL,
 789                 .off1   = td_var_offset(fsync_on_close),
 790                 .help   = "fsync files on close",
 791                 .def    = "0",
 792         },
 793         {
 794                 .name   = "unlink",
 795                 .type   = FIO_OPT_BOOL,
 796                 .off1   = td_var_offset(unlink),
 797                 .help   = "Unlink created files after job has completed",
 798                 .def    = "0",
 799         },
 800         {
 801                 .name   = "exitall",
 802                 .type   = FIO_OPT_STR_SET,
 803                 .cb     = str_exitall_cb,
 804                 .help   = "Terminate all jobs when one exits",
 805         },
 806         {
 807                 .name   = "stonewall",
 808                 .type   = FIO_OPT_STR_SET,
 809                 .off1   = td_var_offset(stonewall),
 810                 .help   = "Insert a hard barrier between this job and previous",
 811         },
 812         {
 813                 .name   = "new_group",
 814                 .type   = FIO_OPT_STR_SET,
 815                 .off1   = td_var_offset(new_group),
 816                 .help   = "Mark the start of a new group (for reporting)",
 817         },
 818         {
 819                 .name   = "thread",
 820                 .type   = FIO_OPT_STR_SET,
 821                 .off1   = td_var_offset(use_thread),
 822                 .help   = "Use threads instead of forks",
 823         },
 824         {
 825                 .name   = "write_bw_log",
 826                 .type   = FIO_OPT_STR_SET,
 827                 .off1   = td_var_offset(write_bw_log),
 828                 .help   = "Write log of bandwidth during run",
 829         },
 830         {
 831                 .name   = "write_lat_log",
 832                 .type   = FIO_OPT_STR_SET,
 833                 .off1   = td_var_offset(write_lat_log),
 834                 .help   = "Write log of latency during run",
 835         },
 836         {
 837                 .name   = "hugepage-size",
 838                 .type   = FIO_OPT_STR_VAL,
 839                 .off1   = td_var_offset(hugepage_size),
 840                 .help   = "When using hugepages, specify size of each page",
 841                 .def    = __stringify(FIO_HUGE_PAGE),
 842         },
 843         {
 844                 .name   = "group_reporting",
 845                 .type   = FIO_OPT_STR_SET,
 846                 .off1   = td_var_offset(group_reporting),
 847                 .help   = "Do reporting on a per-group basis",
 848         },
 849         {
 850                 .name   = "zero_buffers",
 851                 .type   = FIO_OPT_STR_SET,
 852                 .off1   = td_var_offset(zero_buffers),
 853                 .help   = "Init IO buffers to all zeroes",
 854         },
 855 #ifdef FIO_HAVE_DISK_UTIL
 856         {
 857                 .name   = "disk_util",
 858                 .type   = FIO_OPT_BOOL,
 859                 .off1   = td_var_offset(do_disk_util),
 860                 .help   = "Log disk utilization stats",
 861                 .def    = "1",
 862         },
 863 #endif
 864         {
 865                 .name = NULL,
 866         },
 867 };
 868
 869 void fio_options_dup_and_init(struct option *long_options)
 870 {
 871         struct fio_option *o;
 872         unsigned int i;
 873
 874         options_init(options);
 875
 876         i = 0;
 877         while (long_options[i].name)
 878                 i++;
 879
 880         o = &options[0];
 881         while (o->name) {
 882                 long_options[i].name = o->name;
 883                 long_options[i].val = FIO_GETOPT_JOB;
 884                 if (o->type == FIO_OPT_STR_SET)
 885                         long_options[i].has_arg = no_argument;
 886                 else
 887                         long_options[i].has_arg = required_argument;
 888
 889                 i++;
 890                 o++;
 891                 assert(i < FIO_NR_OPTIONS);
 892         }
 893 }
 894
 895 int fio_option_parse(struct thread_data *td, const char *opt)
 896 {
 897         return parse_option(opt, options, td);
 898 }
 899
 900 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
 901 {
 902         return parse_cmd_option(opt, val, options, td);
 903 }
 904
 905 void fio_fill_default_options(struct thread_data *td)
 906 {
 907         fill_default_options(td, options);
 908 }
 909
 910 int fio_show_option_help(const char *opt)
 911 {
 912         return show_cmd_help(options, opt);
 913 }
 914
 915 static void __options_mem(struct thread_data *td, int alloc)
 916 {
 917         struct thread_options *o = &td->o;
 918         struct fio_option *opt;
 919         char **ptr;
 920         int i;
 921
 922         for (i = 0, opt = &options[0]; opt->name; i++, opt = &options[i]) {
 923                 if (opt->type != FIO_OPT_STR_STORE)
 924                         continue;
 925
 926                 ptr = (void *) o + opt->off1;
 927                 if (*ptr) {
 928                         if (alloc)
 929                                 *ptr = strdup(*ptr);
 930                         else {
 931                                 free(*ptr);
 932                                 *ptr = NULL;
 933                         }
 934                 }
 935         }
 936 }
 937
 938 /*
 939  * dupe FIO_OPT_STR_STORE options
 940  */
 941 void options_mem_dupe(struct thread_data *td)
 942 {
 943         __options_mem(td, 1);
 944 }
 945
 946 void options_mem_free(struct thread_data fio_unused *td)
 947 {
 948 #if 0
 949         __options_mem(td, 0);
 950 #endif
 951 }