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 #ifdef FIO_HAVE_CPU_AFFINITY
 102 static int str_cpumask_cb(void *data, unsigned int *val)
 103 {
 104         struct thread_data *td = data;
 105         unsigned int i;
 106
 107         CPU_ZERO(&td->o.cpumask);
 108
 109         for (i = 0; i < sizeof(int) * 8; i++)
 110                 if ((1 << i) & *val)
 111                         CPU_SET(*val, &td->o.cpumask);
 112
 113         td->o.cpumask_set = 1;
 114         return 0;
 115 }
 116
 117 static int str_cpus_allowed_cb(void *data, const char *input)
 118 {
 119         struct thread_data *td = data;
 120         char *cpu, *str, *p;
 121
 122         CPU_ZERO(&td->o.cpumask);
 123
 124         p = str = strdup(input);
 125
 126         strip_blank_front(&str);
 127         strip_blank_end(str);
 128
 129         while ((cpu = strsep(&str, ",")) != NULL) {
 130                 if (!strlen(cpu))
 131                         break;
 132                 CPU_SET(atoi(cpu), &td->o.cpumask);
 133         }
 134
 135         free(p);
 136         td->o.cpumask_set = 1;
 137         exit(0);
 138         return 0;
 139 }
 140 #endif
 141
 142 static int str_fst_cb(void *data, const char *str)
 143 {
 144         struct thread_data *td = data;
 145         char *nr = get_opt_postfix(str);
 146
 147         td->file_service_nr = 1;
 148         if (nr)
 149                 td->file_service_nr = atoi(nr);
 150
 151         return 0;
 152 }
 153
 154 static int str_filename_cb(void *data, const char *input)
 155 {
 156         struct thread_data *td = data;
 157         char *fname, *str, *p;
 158
 159         p = str = strdup(input);
 160
 161         strip_blank_front(&str);
 162         strip_blank_end(str);
 163
 164         if (!td->files_index)
 165                 td->o.nr_files = 0;
 166
 167         while ((fname = strsep(&str, ":")) != NULL) {
 168                 if (!strlen(fname))
 169                         break;
 170                 add_file(td, fname);
 171                 td->o.nr_files++;
 172         }
 173
 174         free(p);
 175         return 0;
 176 }
 177
 178 static int str_directory_cb(void *data, const char fio_unused *str)
 179 {
 180         struct thread_data *td = data;
 181         struct stat sb;
 182
 183         if (lstat(td->o.directory, &sb) < 0) {
 184                 log_err("fio: %s is not a directory\n", td->o.directory);
 185                 td_verror(td, errno, "lstat");
 186                 return 1;
 187         }
 188         if (!S_ISDIR(sb.st_mode)) {
 189                 log_err("fio: %s is not a directory\n", td->o.directory);
 190                 return 1;
 191         }
 192
 193         return 0;
 194 }
 195
 196 static int str_opendir_cb(void *data, const char fio_unused *str)
 197 {
 198         struct thread_data *td = data;
 199
 200         if (!td->files_index)
 201                 td->o.nr_files = 0;
 202
 203         return add_dir_files(td, td->o.opendir);
 204 }
 205
 206
 207 #define __stringify_1(x)        #x
 208 #define __stringify(x)          __stringify_1(x)
 209
 210 /*
 211  * Map of job/command line options
 212  */
 213 static struct fio_option options[] = {
 214         {
 215                 .name   = "description",
 216                 .type   = FIO_OPT_STR_STORE,
 217                 .off1   = td_var_offset(description),
 218                 .help   = "Text job description",
 219         },
 220         {
 221                 .name   = "name",
 222                 .type   = FIO_OPT_STR_STORE,
 223                 .off1   = td_var_offset(name),
 224                 .help   = "Name of this job",
 225         },
 226         {
 227                 .name   = "directory",
 228                 .type   = FIO_OPT_STR_STORE,
 229                 .off1   = td_var_offset(directory),
 230                 .cb     = str_directory_cb,
 231                 .help   = "Directory to store files in",
 232         },
 233         {
 234                 .name   = "filename",
 235                 .type   = FIO_OPT_STR_STORE,
 236                 .off1   = td_var_offset(filename),
 237                 .cb     = str_filename_cb,
 238                 .help   = "File(s) to use for the workload",
 239         },
 240         {
 241                 .name   = "opendir",
 242                 .type   = FIO_OPT_STR_STORE,
 243                 .off1   = td_var_offset(opendir),
 244                 .cb     = str_opendir_cb,
 245                 .help   = "Recursively add files from this directory and down",
 246         },
 247         {
 248                 .name   = "rw",
 249                 .alias  = "readwrite",
 250                 .type   = FIO_OPT_STR,
 251                 .cb     = str_rw_cb,
 252                 .off1   = td_var_offset(td_ddir),
 253                 .help   = "IO direction",
 254                 .def    = "read",
 255                 .posval = {
 256                           { .ival = "read",
 257                             .oval = TD_DDIR_READ,
 258                             .help = "Sequential read",
 259                           },
 260                           { .ival = "write",
 261                             .oval = TD_DDIR_WRITE,
 262                             .help = "Sequential write",
 263                           },
 264                           { .ival = "randread",
 265                             .oval = TD_DDIR_RANDREAD,
 266                             .help = "Random read",
 267                           },
 268                           { .ival = "randwrite",
 269                             .oval = TD_DDIR_RANDWRITE,
 270                             .help = "Random write",
 271                           },
 272                           { .ival = "rw",
 273                             .oval = TD_DDIR_RW,
 274                             .help = "Sequential read and write mix",
 275                           },
 276                           { .ival = "randrw",
 277                             .oval = TD_DDIR_RANDRW,
 278                             .help = "Random read and write mix"
 279                           },
 280                 },
 281         },
 282         {
 283                 .name   = "fadvise_hint",
 284                 .type   = FIO_OPT_BOOL,
 285                 .off1   = td_var_offset(fadvise_hint),
 286                 .help   = "Use fadvise() to advise the kernel on IO pattern",
 287                 .def    = "1",
 288         },
 289         {
 290                 .name   = "ioengine",
 291                 .type   = FIO_OPT_STR_STORE,
 292                 .off1   = td_var_offset(ioengine),
 293                 .help   = "IO engine to use",
 294                 .def    = "sync",
 295                 .posval = {
 296                           { .ival = "sync",
 297                             .help = "Use read/write",
 298                           },
 299 #ifdef FIO_HAVE_LIBAIO
 300                           { .ival = "libaio",
 301                             .help = "Linux native asynchronous IO",
 302                           },
 303 #endif
 304 #ifdef FIO_HAVE_POSIXAIO
 305                           { .ival = "posixaio",
 306                             .help = "POSIX asynchronous IO",
 307                           },
 308 #endif
 309                           { .ival = "mmap",
 310                             .help = "Memory mapped IO",
 311                           },
 312 #ifdef FIO_HAVE_SPLICE
 313                           { .ival = "splice",
 314                             .help = "splice/vmsplice based IO",
 315                           },
 316 #endif
 317 #ifdef FIO_HAVE_SGIO
 318                           { .ival = "sg",
 319                             .help = "SCSI generic v3 IO",
 320                           },
 321 #endif
 322                           { .ival = "null",
 323                             .help = "Testing engine (no data transfer)",
 324                           },
 325                           { .ival = "net",
 326                             .help = "Network IO",
 327                           },
 328 #ifdef FIO_HAVE_SYSLET
 329                           { .ival = "syslet-rw",
 330                             .help = "syslet enabled async pread/pwrite IO",
 331                           },
 332 #endif
 333                           { .ival = "cpuio",
 334                             .help = "CPU cycler burner engine",
 335                           },
 336 #ifdef FIO_HAVE_GUASI
 337                           { .ival = "guasi",
 338                             .help = "GUASI IO engine",
 339                           },
 340 #endif
 341                           { .ival = "external",
 342                             .help = "Load external engine (append name)",
 343                           },
 344                 },
 345         },
 346         {
 347                 .name   = "iodepth",
 348                 .type   = FIO_OPT_INT,
 349                 .off1   = td_var_offset(iodepth),
 350                 .help   = "Amount of IO buffers to keep in flight",
 351                 .def    = "1",
 352         },
 353         {
 354                 .name   = "iodepth_batch",
 355                 .type   = FIO_OPT_INT,
 356                 .off1   = td_var_offset(iodepth_batch),
 357                 .help   = "Number of IO to submit in one go",
 358         },
 359         {
 360                 .name   = "iodepth_low",
 361                 .type   = FIO_OPT_INT,
 362                 .off1   = td_var_offset(iodepth_low),
 363                 .help   = "Low water mark for queuing depth",
 364         },
 365         {
 366                 .name   = "size",
 367                 .type   = FIO_OPT_STR_VAL,
 368                 .off1   = td_var_offset(size),
 369                 .help   = "Total size of device or files",
 370         },
 371         {
 372                 .name   = "filesize",
 373                 .type   = FIO_OPT_STR_VAL,
 374                 .off1   = td_var_offset(file_size_low),
 375                 .off2   = td_var_offset(file_size_high),
 376                 .help   = "Size of individual files",
 377         },
 378         {
 379                 .name   = "bs",
 380                 .alias  = "blocksize",
 381                 .type   = FIO_OPT_STR_VAL_INT,
 382                 .off1   = td_var_offset(bs[DDIR_READ]),
 383                 .off2   = td_var_offset(bs[DDIR_WRITE]),
 384                 .help   = "Block size unit",
 385                 .def    = "4k",
 386         },
 387         {
 388                 .name   = "bsrange",
 389                 .alias  = "blocksize_range",
 390                 .type   = FIO_OPT_RANGE,
 391                 .off1   = td_var_offset(min_bs[DDIR_READ]),
 392                 .off2   = td_var_offset(max_bs[DDIR_READ]),
 393                 .off3   = td_var_offset(min_bs[DDIR_WRITE]),
 394                 .off4   = td_var_offset(max_bs[DDIR_WRITE]),
 395                 .help   = "Set block size range (in more detail than bs)",
 396         },
 397         {
 398                 .name   = "bs_unaligned",
 399                 .alias  = "blocksize_unaligned",
 400                 .type   = FIO_OPT_STR_SET,
 401                 .off1   = td_var_offset(bs_unaligned),
 402                 .help   = "Don't sector align IO buffer sizes",
 403         },
 404         {
 405                 .name   = "offset",
 406                 .type   = FIO_OPT_STR_VAL,
 407                 .off1   = td_var_offset(start_offset),
 408                 .help   = "Start IO from this offset",
 409                 .def    = "0",
 410         },
 411         {
 412                 .name   = "randrepeat",
 413                 .type   = FIO_OPT_BOOL,
 414                 .off1   = td_var_offset(rand_repeatable),
 415                 .help   = "Use repeatable random IO pattern",
 416                 .def    = "1",
 417         },
 418         {
 419                 .name   = "norandommap",
 420                 .type   = FIO_OPT_STR_SET,
 421                 .off1   = td_var_offset(norandommap),
 422                 .help   = "Accept potential duplicate random blocks",
 423         },
 424         {
 425                 .name   = "nrfiles",
 426                 .type   = FIO_OPT_INT,
 427                 .off1   = td_var_offset(nr_files),
 428                 .help   = "Split job workload between this number of files",
 429                 .def    = "1",
 430         },
 431         {
 432                 .name   = "openfiles",
 433                 .type   = FIO_OPT_INT,
 434                 .off1   = td_var_offset(open_files),
 435                 .help   = "Number of files to keep open at the same time",
 436         },
 437         {
 438                 .name   = "file_service_type",
 439                 .type   = FIO_OPT_STR,
 440                 .cb     = str_fst_cb,
 441                 .off1   = td_var_offset(file_service_type),
 442                 .help   = "How to select which file to service next",
 443                 .def    = "roundrobin",
 444                 .posval = {
 445                           { .ival = "random",
 446                             .oval = FIO_FSERVICE_RANDOM,
 447                             .help = "Choose a file at random",
 448                           },
 449                           { .ival = "roundrobin",
 450                             .oval = FIO_FSERVICE_RR,
 451                             .help = "Round robin select files",
 452                           },
 453                 },
 454         },
 455         {
 456                 .name   = "fsync",
 457                 .type   = FIO_OPT_INT,
 458                 .off1   = td_var_offset(fsync_blocks),
 459                 .help   = "Issue fsync for writes every given number of blocks",
 460                 .def    = "0",
 461         },
 462         {
 463                 .name   = "direct",
 464                 .type   = FIO_OPT_BOOL,
 465                 .off1   = td_var_offset(odirect),
 466                 .help   = "Use O_DIRECT IO (negates buffered)",
 467                 .def    = "0",
 468         },
 469         {
 470                 .name   = "buffered",
 471                 .type   = FIO_OPT_BOOL,
 472                 .off1   = td_var_offset(odirect),
 473                 .neg    = 1,
 474                 .help   = "Use buffered IO (negates direct)",
 475                 .def    = "1",
 476         },
 477         {
 478                 .name   = "overwrite",
 479                 .type   = FIO_OPT_BOOL,
 480                 .off1   = td_var_offset(overwrite),
 481                 .help   = "When writing, set whether to overwrite current data",
 482                 .def    = "0",
 483         },
 484         {
 485                 .name   = "loops",
 486                 .type   = FIO_OPT_INT,
 487                 .off1   = td_var_offset(loops),
 488                 .help   = "Number of times to run the job",
 489                 .def    = "1",
 490         },
 491         {
 492                 .name   = "numjobs",
 493                 .type   = FIO_OPT_INT,
 494                 .off1   = td_var_offset(numjobs),
 495                 .help   = "Duplicate this job this many times",
 496                 .def    = "1",
 497         },
 498         {
 499                 .name   = "startdelay",
 500                 .type   = FIO_OPT_INT,
 501                 .off1   = td_var_offset(start_delay),
 502                 .help   = "Only start job when this period has passed",
 503                 .def    = "0",
 504         },
 505         {
 506                 .name   = "runtime",
 507                 .alias  = "timeout",
 508                 .type   = FIO_OPT_STR_VAL_TIME,
 509                 .off1   = td_var_offset(timeout),
 510                 .help   = "Stop workload when this amount of time has passed",
 511                 .def    = "0",
 512         },
 513         {
 514                 .name   = "time_based",
 515                 .type   = FIO_OPT_STR_SET,
 516                 .off1   = td_var_offset(time_based),
 517                 .help   = "Keep running until runtime/timeout is met",
 518         },
 519         {
 520                 .name   = "mem",
 521                 .alias  = "iomem",
 522                 .type   = FIO_OPT_STR,
 523                 .cb     = str_mem_cb,
 524                 .off1   = td_var_offset(mem_type),
 525                 .help   = "Backing type for IO buffers",
 526                 .def    = "malloc",
 527                 .posval = {
 528                           { .ival = "malloc",
 529                             .oval = MEM_MALLOC,
 530                             .help = "Use malloc(3) for IO buffers",
 531                           },
 532                           { .ival = "shm",
 533                             .oval = MEM_SHM,
 534                             .help = "Use shared memory segments for IO buffers",
 535                           },
 536 #ifdef FIO_HAVE_HUGETLB
 537                           { .ival = "shmhuge",
 538                             .oval = MEM_SHMHUGE,
 539                             .help = "Like shm, but use huge pages",
 540                           },
 541 #endif
 542                           { .ival = "mmap",
 543                             .oval = MEM_MMAP,
 544                             .help = "Use mmap(2) (file or anon) for IO buffers",
 545                           },
 546 #ifdef FIO_HAVE_HUGETLB
 547                           { .ival = "mmaphuge",
 548                             .oval = MEM_MMAPHUGE,
 549                             .help = "Like mmap, but use huge pages",
 550                           },
 551 #endif
 552                   },
 553         },
 554         {
 555                 .name   = "verify",
 556                 .type   = FIO_OPT_STR,
 557                 .off1   = td_var_offset(verify),
 558                 .help   = "Verify data written",
 559                 .def    = "0",
 560                 .posval = {
 561                           { .ival = "0",
 562                             .oval = VERIFY_NONE,
 563                             .help = "Don't do IO verification",
 564                           },
 565                           { .ival = "crc32",
 566                             .oval = VERIFY_CRC32,
 567                             .help = "Use crc32 checksums for verification",
 568                           },
 569                           { .ival = "md5",
 570                             .oval = VERIFY_MD5,
 571                             .help = "Use md5 checksums for verification",
 572                           },
 573                           {
 574                             .ival = "null",
 575                             .oval = VERIFY_NULL,
 576                             .help = "Pretend to verify",
 577                           },
 578                 },
 579         },
 580         {
 581                 .name   = "verifysort",
 582                 .type   = FIO_OPT_BOOL,
 583                 .off1   = td_var_offset(verifysort),
 584                 .help   = "Sort written verify blocks for read back",
 585                 .def    = "1",
 586         },
 587         {
 588                 .name   = "write_iolog",
 589                 .type   = FIO_OPT_STR_STORE,
 590                 .off1   = td_var_offset(write_iolog_file),
 591                 .help   = "Store IO pattern to file",
 592         },
 593         {
 594                 .name   = "read_iolog",
 595                 .type   = FIO_OPT_STR_STORE,
 596                 .off1   = td_var_offset(read_iolog_file),
 597                 .help   = "Playback IO pattern from file",
 598         },
 599         {
 600                 .name   = "exec_prerun",
 601                 .type   = FIO_OPT_STR_STORE,
 602                 .off1   = td_var_offset(exec_prerun),
 603                 .help   = "Execute this file prior to running job",
 604         },
 605         {
 606                 .name   = "exec_postrun",
 607                 .type   = FIO_OPT_STR_STORE,
 608                 .off1   = td_var_offset(exec_postrun),
 609                 .help   = "Execute this file after running job",
 610         },
 611 #ifdef FIO_HAVE_IOSCHED_SWITCH
 612         {
 613                 .name   = "ioscheduler",
 614                 .type   = FIO_OPT_STR_STORE,
 615                 .off1   = td_var_offset(ioscheduler),
 616                 .help   = "Use this IO scheduler on the backing device",
 617         },
 618 #endif
 619         {
 620                 .name   = "zonesize",
 621                 .type   = FIO_OPT_STR_VAL,
 622                 .off1   = td_var_offset(zone_size),
 623                 .help   = "Give size of an IO zone",
 624                 .def    = "0",
 625         },
 626         {
 627                 .name   = "zoneskip",
 628                 .type   = FIO_OPT_STR_VAL,
 629                 .off1   = td_var_offset(zone_skip),
 630                 .help   = "Space between IO zones",
 631                 .def    = "0",
 632         },
 633         {
 634                 .name   = "lockmem",
 635                 .type   = FIO_OPT_STR_VAL,
 636                 .cb     = str_lockmem_cb,
 637                 .help   = "Lock down this amount of memory",
 638                 .def    = "0",
 639         },
 640         {
 641                 .name   = "rwmixcycle",
 642                 .type   = FIO_OPT_INT,
 643                 .off1   = td_var_offset(rwmixcycle),
 644                 .help   = "Cycle period for mixed read/write workloads (msec)",
 645                 .def    = "500",
 646         },
 647         {
 648                 .name   = "rwmixread",
 649                 .type   = FIO_OPT_INT,
 650                 .off1   = td_var_offset(rwmix[DDIR_READ]),
 651                 .maxval = 100,
 652                 .help   = "Percentage of mixed workload that is reads",
 653                 .def    = "50",
 654         },
 655         {
 656                 .name   = "rwmixwrite",
 657                 .type   = FIO_OPT_INT,
 658                 .off1   = td_var_offset(rwmix[DDIR_WRITE]),
 659                 .maxval = 100,
 660                 .help   = "Percentage of mixed workload that is writes",
 661                 .def    = "50",
 662         },
 663         {
 664                 .name   = "nice",
 665                 .type   = FIO_OPT_INT,
 666                 .off1   = td_var_offset(nice),
 667                 .help   = "Set job CPU nice value",
 668                 .minval = -19,
 669                 .maxval = 20,
 670                 .def    = "0",
 671         },
 672 #ifdef FIO_HAVE_IOPRIO
 673         {
 674                 .name   = "prio",
 675                 .type   = FIO_OPT_INT,
 676                 .cb     = str_prio_cb,
 677                 .help   = "Set job IO priority value",
 678                 .minval = 0,
 679                 .maxval = 7,
 680         },
 681         {
 682                 .name   = "prioclass",
 683                 .type   = FIO_OPT_INT,
 684                 .cb     = str_prioclass_cb,
 685                 .help   = "Set job IO priority class",
 686                 .minval = 0,
 687                 .maxval = 3,
 688         },
 689 #endif
 690         {
 691                 .name   = "thinktime",
 692                 .type   = FIO_OPT_INT,
 693                 .off1   = td_var_offset(thinktime),
 694                 .help   = "Idle time between IO buffers (usec)",
 695                 .def    = "0",
 696         },
 697         {
 698                 .name   = "thinktime_spin",
 699                 .type   = FIO_OPT_INT,
 700                 .off1   = td_var_offset(thinktime_spin),
 701                 .help   = "Start think time by spinning this amount (usec)",
 702                 .def    = "0",
 703         },
 704         {
 705                 .name   = "thinktime_blocks",
 706                 .type   = FIO_OPT_INT,
 707                 .off1   = td_var_offset(thinktime_blocks),
 708                 .help   = "IO buffer period between 'thinktime'",
 709                 .def    = "1",
 710         },
 711         {
 712                 .name   = "rate",
 713                 .type   = FIO_OPT_INT,
 714                 .off1   = td_var_offset(rate),
 715                 .help   = "Set bandwidth rate",
 716         },
 717         {
 718                 .name   = "ratemin",
 719                 .type   = FIO_OPT_INT,
 720                 .off1   = td_var_offset(ratemin),
 721                 .help   = "Job must meet this rate or it will be shutdown",
 722         },
 723         {
 724                 .name   = "rate_iops",
 725                 .type   = FIO_OPT_INT,
 726                 .off1   = td_var_offset(rate_iops),
 727                 .help   = "Limit IO used to this number of IO operations/sec",
 728         },
 729         {
 730                 .name   = "rate_iops_min",
 731                 .type   = FIO_OPT_INT,
 732                 .off1   = td_var_offset(rate_iops_min),
 733                 .help   = "Job must meet this rate or it will be shutdown",
 734         },
 735         {
 736                 .name   = "ratecycle",
 737                 .type   = FIO_OPT_INT,
 738                 .off1   = td_var_offset(ratecycle),
 739                 .help   = "Window average for rate limits (msec)",
 740                 .def    = "1000",
 741         },
 742         {
 743                 .name   = "invalidate",
 744                 .type   = FIO_OPT_BOOL,
 745                 .off1   = td_var_offset(invalidate_cache),
 746                 .help   = "Invalidate buffer/page cache prior to running job",
 747                 .def    = "1",
 748         },
 749         {
 750                 .name   = "sync",
 751                 .type   = FIO_OPT_BOOL,
 752                 .off1   = td_var_offset(sync_io),
 753                 .help   = "Use O_SYNC for buffered writes",
 754                 .def    = "0",
 755         },
 756         {
 757                 .name   = "bwavgtime",
 758                 .type   = FIO_OPT_INT,
 759                 .off1   = td_var_offset(bw_avg_time),
 760                 .help   = "Time window over which to calculate bandwidth (msec)",
 761                 .def    = "500",
 762         },
 763         {
 764                 .name   = "create_serialize",
 765                 .type   = FIO_OPT_BOOL,
 766                 .off1   = td_var_offset(create_serialize),
 767                 .help   = "Serialize creating of job files",
 768                 .def    = "1",
 769         },
 770         {
 771                 .name   = "create_fsync",
 772                 .type   = FIO_OPT_BOOL,
 773                 .off1   = td_var_offset(create_fsync),
 774                 .help   = "Fsync file after creation",
 775                 .def    = "1",
 776         },
 777         {
 778                 .name   = "cpuload",
 779                 .type   = FIO_OPT_INT,
 780                 .off1   = td_var_offset(cpuload),
 781                 .help   = "Use this percentage of CPU",
 782         },
 783         {
 784                 .name   = "cpuchunks",
 785                 .type   = FIO_OPT_INT,
 786                 .off1   = td_var_offset(cpucycle),
 787                 .help   = "Length of the CPU burn cycles (usecs)",
 788                 .def    = "50000",
 789         },
 790 #ifdef FIO_HAVE_CPU_AFFINITY
 791         {
 792                 .name   = "cpumask",
 793                 .type   = FIO_OPT_INT,
 794                 .cb     = str_cpumask_cb,
 795                 .help   = "CPU affinity mask",
 796         },
 797         {
 798                 .name   = "cpus_allowed",
 799                 .type   = FIO_OPT_STR,
 800                 .cb     = str_cpus_allowed_cb,
 801                 .help   = "Set CPUs allowed",
 802         },
 803 #endif
 804         {
 805                 .name   = "end_fsync",
 806                 .type   = FIO_OPT_BOOL,
 807                 .off1   = td_var_offset(end_fsync),
 808                 .help   = "Include fsync at the end of job",
 809                 .def    = "0",
 810         },
 811         {
 812                 .name   = "fsync_on_close",
 813                 .type   = FIO_OPT_BOOL,
 814                 .off1   = td_var_offset(fsync_on_close),
 815                 .help   = "fsync files on close",
 816                 .def    = "0",
 817         },
 818         {
 819                 .name   = "unlink",
 820                 .type   = FIO_OPT_BOOL,
 821                 .off1   = td_var_offset(unlink),
 822                 .help   = "Unlink created files after job has completed",
 823                 .def    = "0",
 824         },
 825         {
 826                 .name   = "exitall",
 827                 .type   = FIO_OPT_STR_SET,
 828                 .cb     = str_exitall_cb,
 829                 .help   = "Terminate all jobs when one exits",
 830         },
 831         {
 832                 .name   = "stonewall",
 833                 .type   = FIO_OPT_STR_SET,
 834                 .off1   = td_var_offset(stonewall),
 835                 .help   = "Insert a hard barrier between this job and previous",
 836         },
 837         {
 838                 .name   = "new_group",
 839                 .type   = FIO_OPT_STR_SET,
 840                 .off1   = td_var_offset(new_group),
 841                 .help   = "Mark the start of a new group (for reporting)",
 842         },
 843         {
 844                 .name   = "thread",
 845                 .type   = FIO_OPT_STR_SET,
 846                 .off1   = td_var_offset(use_thread),
 847                 .help   = "Use threads instead of forks",
 848         },
 849         {
 850                 .name   = "write_bw_log",
 851                 .type   = FIO_OPT_STR_SET,
 852                 .off1   = td_var_offset(write_bw_log),
 853                 .help   = "Write log of bandwidth during run",
 854         },
 855         {
 856                 .name   = "write_lat_log",
 857                 .type   = FIO_OPT_STR_SET,
 858                 .off1   = td_var_offset(write_lat_log),
 859                 .help   = "Write log of latency during run",
 860         },
 861         {
 862                 .name   = "hugepage-size",
 863                 .type   = FIO_OPT_STR_VAL,
 864                 .off1   = td_var_offset(hugepage_size),
 865                 .help   = "When using hugepages, specify size of each page",
 866                 .def    = __stringify(FIO_HUGE_PAGE),
 867         },
 868         {
 869                 .name   = "group_reporting",
 870                 .type   = FIO_OPT_STR_SET,
 871                 .off1   = td_var_offset(group_reporting),
 872                 .help   = "Do reporting on a per-group basis",
 873         },
 874         {
 875                 .name   = "zero_buffers",
 876                 .type   = FIO_OPT_STR_SET,
 877                 .off1   = td_var_offset(zero_buffers),
 878                 .help   = "Init IO buffers to all zeroes",
 879         },
 880 #ifdef FIO_HAVE_DISK_UTIL
 881         {
 882                 .name   = "disk_util",
 883                 .type   = FIO_OPT_BOOL,
 884                 .off1   = td_var_offset(do_disk_util),
 885                 .help   = "Log disk utilization stats",
 886                 .def    = "1",
 887         },
 888 #endif
 889         {
 890                 .name = NULL,
 891         },
 892 };
 893
 894 void fio_options_dup_and_init(struct option *long_options)
 895 {
 896         struct fio_option *o;
 897         unsigned int i;
 898
 899         options_init(options);
 900
 901         i = 0;
 902         while (long_options[i].name)
 903                 i++;
 904
 905         o = &options[0];
 906         while (o->name) {
 907                 long_options[i].name = o->name;
 908                 long_options[i].val = FIO_GETOPT_JOB;
 909                 if (o->type == FIO_OPT_STR_SET)
 910                         long_options[i].has_arg = no_argument;
 911                 else
 912                         long_options[i].has_arg = required_argument;
 913
 914                 i++;
 915                 o++;
 916                 assert(i < FIO_NR_OPTIONS);
 917         }
 918 }
 919
 920 int fio_option_parse(struct thread_data *td, const char *opt)
 921 {
 922         return parse_option(opt, options, td);
 923 }
 924
 925 int fio_cmd_option_parse(struct thread_data *td, const char *opt, char *val)
 926 {
 927         return parse_cmd_option(opt, val, options, td);
 928 }
 929
 930 void fio_fill_default_options(struct thread_data *td)
 931 {
 932         fill_default_options(td, options);
 933 }
 934
 935 int fio_show_option_help(const char *opt)
 936 {
 937         return show_cmd_help(options, opt);
 938 }
 939
 940 static void __options_mem(struct thread_data *td, int alloc)
 941 {
 942         struct thread_options *o = &td->o;
 943         struct fio_option *opt;
 944         char **ptr;
 945         int i;
 946
 947         for (i = 0, opt = &options[0]; opt->name; i++, opt = &options[i]) {
 948                 if (opt->type != FIO_OPT_STR_STORE)
 949                         continue;
 950
 951                 ptr = (void *) o + opt->off1;
 952                 if (*ptr) {
 953                         if (alloc)
 954                                 *ptr = strdup(*ptr);
 955                         else {
 956                                 free(*ptr);
 957                                 *ptr = NULL;
 958                         }
 959                 }
 960         }
 961 }
 962
 963 /*
 964  * dupe FIO_OPT_STR_STORE options
 965  */
 966 void options_mem_dupe(struct thread_data *td)
 967 {
 968         __options_mem(td, 1);
 969 }
 970
 971 void options_mem_free(struct thread_data fio_unused *td)
 972 {
 973 #if 0
 974         __options_mem(td, 0);
 975 #endif
 976 }