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1#ifndef FIO_H
2#define FIO_H
3
4#include <sched.h>
5#include <limits.h>
6#include <pthread.h>
7#include <sys/time.h>
8#include <sys/resource.h>
9#include <errno.h>
10#include <stdlib.h>
11#include <stdio.h>
12#include <unistd.h>
13#include <string.h>
14#include <inttypes.h>
15#include <assert.h>
16
17struct thread_data;
18
19#include "compiler/compiler.h"
20#include "flist.h"
21#include "fifo.h"
22#include "rbtree.h"
23#include "arch/arch.h"
24#include "os/os.h"
25#include "mutex.h"
26#include "log.h"
27#include "debug.h"
28#include "file.h"
29#include "io_ddir.h"
30#include "ioengine.h"
31#include "iolog.h"
32#include "helpers.h"
33#include "options.h"
34#include "profile.h"
35#include "time.h"
36#include "gettime.h"
37#include "lib/getopt.h"
38#include "lib/rand.h"
39#include "server.h"
40#include "stat.h"
41#include "flow.h"
42
43#ifdef FIO_HAVE_GUASI
44#include <guasi.h>
45#endif
46
47#ifdef FIO_HAVE_SOLARISAIO
48#include <sys/asynch.h>
49#endif
50
51#ifdef FIO_HAVE_LIBNUMA
52#include <linux/mempolicy.h>
53#include <numa.h>
54
55/*
56 * "local" is pseudo-policy
57 */
58#define MPOL_LOCAL MPOL_MAX
59#endif
60
61/*
62 * What type of allocation to use for io buffers
63 */
64enum fio_memtype {
65 MEM_MALLOC = 0, /* ordinary malloc */
66 MEM_SHM, /* use shared memory segments */
67 MEM_SHMHUGE, /* use shared memory segments with huge pages */
68 MEM_MMAP, /* use anonynomous mmap */
69 MEM_MMAPHUGE, /* memory mapped huge file */
70};
71
72/*
73 * offset generator types
74 */
75enum {
76 RW_SEQ_SEQ = 0,
77 RW_SEQ_IDENT,
78};
79
80/*
81 * What type of errors to continue on when continue_on_error is used
82 */
83enum error_type_bit {
84 ERROR_TYPE_READ_BIT = 0,
85 ERROR_TYPE_WRITE_BIT = 1,
86 ERROR_TYPE_VERIFY_BIT = 2,
87 ERROR_TYPE_CNT = 3,
88};
89
90enum error_type {
91 ERROR_TYPE_NONE = 0,
92 ERROR_TYPE_READ = 1 << ERROR_TYPE_READ_BIT,
93 ERROR_TYPE_WRITE = 1 << ERROR_TYPE_WRITE_BIT,
94 ERROR_TYPE_VERIFY = 1 << ERROR_TYPE_VERIFY_BIT,
95 ERROR_TYPE_ANY = 0xffff,
96};
97
98struct bssplit {
99 unsigned int bs;
100 unsigned char perc;
101};
102
103struct thread_options {
104 int pad;
105 char *description;
106 char *name;
107 char *directory;
108 char *filename;
109 char *opendir;
110 char *ioengine;
111 enum td_ddir td_ddir;
112 unsigned int rw_seq;
113 unsigned int kb_base;
114 unsigned int ddir_seq_nr;
115 long ddir_seq_add;
116 unsigned int iodepth;
117 unsigned int iodepth_low;
118 unsigned int iodepth_batch;
119 unsigned int iodepth_batch_complete;
120
121 unsigned long long size;
122 unsigned int size_percent;
123 unsigned int fill_device;
124 unsigned long long file_size_low;
125 unsigned long long file_size_high;
126 unsigned long long start_offset;
127
128 unsigned int bs[DDIR_RWDIR_CNT];
129 unsigned int ba[DDIR_RWDIR_CNT];
130 unsigned int min_bs[DDIR_RWDIR_CNT];
131 unsigned int max_bs[DDIR_RWDIR_CNT];
132 struct bssplit *bssplit[DDIR_RWDIR_CNT];
133 unsigned int bssplit_nr[DDIR_RWDIR_CNT];
134
135 int *ignore_error[ERROR_TYPE_CNT];
136 unsigned int ignore_error_nr[ERROR_TYPE_CNT];
137 unsigned int error_dump;
138
139 unsigned int nr_files;
140 unsigned int open_files;
141 enum file_lock_mode file_lock_mode;
142 unsigned int lockfile_batch;
143
144 unsigned int odirect;
145 unsigned int invalidate_cache;
146 unsigned int create_serialize;
147 unsigned int create_fsync;
148 unsigned int create_on_open;
149 unsigned int create_only;
150 unsigned int end_fsync;
151 unsigned int pre_read;
152 unsigned int sync_io;
153 unsigned int verify;
154 unsigned int do_verify;
155 unsigned int verifysort;
156 unsigned int verify_interval;
157 unsigned int verify_offset;
158 char verify_pattern[MAX_PATTERN_SIZE];
159 unsigned int verify_pattern_bytes;
160 unsigned int verify_fatal;
161 unsigned int verify_dump;
162 unsigned int verify_async;
163 unsigned long long verify_backlog;
164 unsigned int verify_batch;
165 unsigned int use_thread;
166 unsigned int unlink;
167 unsigned int do_disk_util;
168 unsigned int override_sync;
169 unsigned int rand_repeatable;
170 unsigned int use_os_rand;
171 unsigned int write_lat_log;
172 unsigned int write_bw_log;
173 unsigned int write_iops_log;
174 unsigned int log_avg_msec;
175 unsigned int norandommap;
176 unsigned int softrandommap;
177 unsigned int bs_unaligned;
178 unsigned int fsync_on_close;
179
180 unsigned int random_distribution;
181 double zipf_theta;
182 double pareto_h;
183
184 unsigned int random_generator;
185
186 unsigned int hugepage_size;
187 unsigned int rw_min_bs;
188 unsigned int thinktime;
189 unsigned int thinktime_spin;
190 unsigned int thinktime_blocks;
191 unsigned int fsync_blocks;
192 unsigned int fdatasync_blocks;
193 unsigned int barrier_blocks;
194 unsigned long long start_delay;
195 unsigned long long timeout;
196 unsigned long long ramp_time;
197 unsigned int overwrite;
198 unsigned int bw_avg_time;
199 unsigned int iops_avg_time;
200 unsigned int loops;
201 unsigned long long zone_range;
202 unsigned long long zone_size;
203 unsigned long long zone_skip;
204 enum fio_memtype mem_type;
205 unsigned int mem_align;
206
207 unsigned int max_latency;
208
209 unsigned int stonewall;
210 unsigned int new_group;
211 unsigned int numjobs;
212 os_cpu_mask_t cpumask;
213 unsigned int cpumask_set;
214 os_cpu_mask_t verify_cpumask;
215 unsigned int verify_cpumask_set;
216#ifdef FIO_HAVE_LIBNUMA
217 struct bitmask *numa_cpunodesmask;
218 unsigned int numa_cpumask_set;
219 unsigned short numa_mem_mode;
220 unsigned int numa_mem_prefer_node;
221 struct bitmask *numa_memnodesmask;
222 unsigned int numa_memmask_set;
223#endif
224 unsigned int iolog;
225 unsigned int rwmixcycle;
226 unsigned int rwmix[2];
227 unsigned int nice;
228 unsigned int file_service_type;
229 unsigned int group_reporting;
230 unsigned int fadvise_hint;
231 enum fio_fallocate_mode fallocate_mode;
232 unsigned int zero_buffers;
233 unsigned int refill_buffers;
234 unsigned int scramble_buffers;
235 unsigned int compress_percentage;
236 unsigned int compress_chunk;
237 unsigned int time_based;
238 unsigned int disable_lat;
239 unsigned int disable_clat;
240 unsigned int disable_slat;
241 unsigned int disable_bw;
242 unsigned int gtod_reduce;
243 unsigned int gtod_cpu;
244 unsigned int gtod_offload;
245 enum fio_cs clocksource;
246 unsigned int no_stall;
247 unsigned int trim_percentage;
248 unsigned int trim_batch;
249 unsigned int trim_zero;
250 unsigned long long trim_backlog;
251 unsigned int clat_percentiles;
252 unsigned int overwrite_plist;
253 fio_fp64_t percentile_list[FIO_IO_U_LIST_MAX_LEN];
254
255 char *read_iolog_file;
256 char *write_iolog_file;
257 char *bw_log_file;
258 char *lat_log_file;
259 char *iops_log_file;
260 char *replay_redirect;
261
262 /*
263 * Pre-run and post-run shell
264 */
265 char *exec_prerun;
266 char *exec_postrun;
267
268 unsigned int rate[DDIR_RWDIR_CNT];
269 unsigned int ratemin[DDIR_RWDIR_CNT];
270 unsigned int ratecycle;
271 unsigned int rate_iops[DDIR_RWDIR_CNT];
272 unsigned int rate_iops_min[DDIR_RWDIR_CNT];
273
274 char *ioscheduler;
275
276 /*
277 * CPU "io" cycle burner
278 */
279 unsigned int cpuload;
280 unsigned int cpucycle;
281
282 /*
283 * I/O Error handling
284 */
285 enum error_type continue_on_error;
286
287 /*
288 * Benchmark profile type
289 */
290 char *profile;
291
292 /*
293 * blkio cgroup support
294 */
295 char *cgroup;
296 unsigned int cgroup_weight;
297 unsigned int cgroup_nodelete;
298
299 unsigned int uid;
300 unsigned int gid;
301
302 int flow_id;
303 int flow;
304 int flow_watermark;
305 unsigned int flow_sleep;
306
307 unsigned long long offset_increment;
308
309 unsigned int sync_file_range;
310};
311
312/*
313 * This describes a single thread/process executing a fio job.
314 */
315struct thread_data {
316 struct thread_options o;
317 void *eo;
318 char verror[FIO_VERROR_SIZE];
319 pthread_t thread;
320 int thread_number;
321 int groupid;
322 struct thread_stat ts;
323
324 struct io_log *slat_log;
325 struct io_log *clat_log;
326 struct io_log *lat_log;
327 struct io_log *bw_log;
328 struct io_log *iops_log;
329
330 uint64_t stat_io_bytes[DDIR_RWDIR_CNT];
331 struct timeval bw_sample_time;
332
333 uint64_t stat_io_blocks[DDIR_RWDIR_CNT];
334 struct timeval iops_sample_time;
335
336 struct rusage ru_start;
337 struct rusage ru_end;
338
339 struct fio_file **files;
340 unsigned int files_size;
341 unsigned int files_index;
342 unsigned int nr_open_files;
343 unsigned int nr_done_files;
344 unsigned int nr_normal_files;
345 union {
346 unsigned int next_file;
347 os_random_state_t next_file_state;
348 struct frand_state __next_file_state;
349 };
350 int error;
351 int sig;
352 int done;
353 pid_t pid;
354 char *orig_buffer;
355 size_t orig_buffer_size;
356 volatile int terminate;
357 volatile int runstate;
358 unsigned int ioprio;
359 unsigned int ioprio_set;
360 unsigned int last_was_sync;
361 enum fio_ddir last_ddir;
362
363 char *mmapfile;
364 int mmapfd;
365
366 void *iolog_buf;
367 FILE *iolog_f;
368
369 char *sysfs_root;
370
371 unsigned long rand_seeds[8];
372
373 union {
374 os_random_state_t bsrange_state;
375 struct frand_state __bsrange_state;
376 };
377 union {
378 os_random_state_t verify_state;
379 struct frand_state __verify_state;
380 };
381 union {
382 os_random_state_t trim_state;
383 struct frand_state __trim_state;
384 };
385
386 struct frand_state buf_state;
387
388 unsigned int verify_batch;
389 unsigned int trim_batch;
390
391 int shm_id;
392
393 /*
394 * IO engine hooks, contains everything needed to submit an io_u
395 * to any of the available IO engines.
396 */
397 struct ioengine_ops *io_ops;
398
399 /*
400 * Queue depth of io_u's that fio MIGHT do
401 */
402 unsigned int cur_depth;
403
404 /*
405 * io_u's about to be committed
406 */
407 unsigned int io_u_queued;
408
409 /*
410 * io_u's submitted but not completed yet
411 */
412 unsigned int io_u_in_flight;
413
414 /*
415 * List of free and busy io_u's
416 */
417 struct flist_head io_u_freelist;
418 struct flist_head io_u_busylist;
419 struct flist_head io_u_requeues;
420 pthread_mutex_t io_u_lock;
421 pthread_cond_t free_cond;
422
423 /*
424 * async verify offload
425 */
426 struct flist_head verify_list;
427 pthread_t *verify_threads;
428 unsigned int nr_verify_threads;
429 pthread_cond_t verify_cond;
430 int verify_thread_exit;
431
432 /*
433 * Rate state
434 */
435 unsigned long long rate_bps[DDIR_RWDIR_CNT];
436 long rate_pending_usleep[DDIR_RWDIR_CNT];
437 unsigned long rate_bytes[DDIR_RWDIR_CNT];
438 unsigned long rate_blocks[DDIR_RWDIR_CNT];
439 struct timeval lastrate[DDIR_RWDIR_CNT];
440
441 unsigned long long total_io_size;
442 unsigned long long fill_device_size;
443
444 unsigned long io_issues[DDIR_RWDIR_CNT];
445 unsigned long long io_blocks[DDIR_RWDIR_CNT];
446 unsigned long long this_io_blocks[DDIR_RWDIR_CNT];
447 unsigned long long io_bytes[DDIR_RWDIR_CNT];
448 unsigned long long io_skip_bytes;
449 unsigned long long this_io_bytes[DDIR_RWDIR_CNT];
450 unsigned long long zone_bytes;
451 struct fio_mutex *mutex;
452
453 /*
454 * State for random io, a bitmap of blocks done vs not done
455 */
456 union {
457 os_random_state_t random_state;
458 struct frand_state __random_state;
459 };
460
461 struct timeval start; /* start of this loop */
462 struct timeval epoch; /* time job was started */
463 struct timeval last_issue;
464 struct timeval tv_cache;
465 unsigned int tv_cache_nr;
466 unsigned int tv_cache_mask;
467 unsigned int ramp_time_over;
468
469 /*
470 * read/write mixed workload state
471 */
472 union {
473 os_random_state_t rwmix_state;
474 struct frand_state __rwmix_state;
475 };
476 unsigned long rwmix_issues;
477 enum fio_ddir rwmix_ddir;
478 unsigned int ddir_seq_nr;
479
480 /*
481 * IO history logs for verification. We use a tree for sorting,
482 * if we are overwriting. Otherwise just use a fifo.
483 */
484 struct rb_root io_hist_tree;
485 struct flist_head io_hist_list;
486 unsigned long io_hist_len;
487
488 /*
489 * For IO replaying
490 */
491 struct flist_head io_log_list;
492
493 /*
494 * For tracking/handling discards
495 */
496 struct flist_head trim_list;
497 unsigned long trim_entries;
498
499 /*
500 * for fileservice, how often to switch to a new file
501 */
502 unsigned int file_service_nr;
503 unsigned int file_service_left;
504 struct fio_file *file_service_file;
505
506 unsigned int sync_file_range_nr;
507
508 /*
509 * For generating file sizes
510 */
511 union {
512 os_random_state_t file_size_state;
513 struct frand_state __file_size_state;
514 };
515
516 /*
517 * Error counts
518 */
519 unsigned int total_err_count;
520 int first_error;
521
522 struct fio_flow *flow;
523
524 /*
525 * Can be overloaded by profiles
526 */
527 struct prof_io_ops prof_io_ops;
528 void *prof_data;
529};
530
531/*
532 * when should interactive ETA output be generated
533 */
534enum {
535 FIO_ETA_AUTO,
536 FIO_ETA_ALWAYS,
537 FIO_ETA_NEVER,
538};
539
540#define __td_verror(td, err, msg, func) \
541 do { \
542 if ((td)->error) \
543 break; \
544 int e = (err); \
545 (td)->error = e; \
546 if (!(td)->first_error) \
547 snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, func=%s, error=%s", __FILE__, __LINE__, (func), (msg)); \
548 } while (0)
549
550
551#define td_clear_error(td) \
552 (td)->error = 0;
553#define td_verror(td, err, func) \
554 __td_verror((td), (err), strerror((err)), (func))
555#define td_vmsg(td, err, msg, func) \
556 __td_verror((td), (err), (msg), (func))
557
558#define __fio_stringify_1(x) #x
559#define __fio_stringify(x) __fio_stringify_1(x)
560
561extern int exitall_on_terminate;
562extern unsigned int thread_number;
563extern unsigned int stat_number;
564extern unsigned int nr_process, nr_thread;
565extern int shm_id;
566extern int groupid;
567extern int output_format;
568extern int temp_stall_ts;
569extern unsigned long long mlock_size;
570extern uintptr_t page_mask, page_size;
571extern int read_only;
572extern int eta_print;
573extern unsigned long done_secs;
574extern char *job_section;
575extern int fio_gtod_offload;
576extern int fio_gtod_cpu;
577extern enum fio_cs fio_clock_source;
578extern int warnings_fatal;
579extern int terse_version;
580extern int is_backend;
581extern int nr_clients;
582extern int log_syslog;
583extern const char fio_version_string[];
584extern const fio_fp64_t def_percentile_list[FIO_IO_U_LIST_MAX_LEN];
585
586extern struct thread_data *threads;
587
588static inline void fio_ro_check(struct thread_data *td, struct io_u *io_u)
589{
590 assert(!(io_u->ddir == DDIR_WRITE && !td_write(td)));
591}
592
593#define REAL_MAX_JOBS 2048
594
595static inline enum error_type_bit td_error_type(enum fio_ddir ddir, int err)
596{
597 if (err == EILSEQ)
598 return ERROR_TYPE_VERIFY_BIT;
599 if (ddir == DDIR_READ)
600 return ERROR_TYPE_READ_BIT;
601 return ERROR_TYPE_WRITE_BIT;
602}
603
604static int __NON_FATAL_ERR[] = {EIO, EILSEQ};
605static inline int td_non_fatal_error(struct thread_data *td,
606 enum error_type_bit etype, int err)
607{
608 int i;
609 if (!td->o.ignore_error[etype]) {
610 td->o.ignore_error[etype] = __NON_FATAL_ERR;
611 td->o.ignore_error_nr[etype] = sizeof(__NON_FATAL_ERR)
612 / sizeof(int);
613 }
614
615 if (!(td->o.continue_on_error & (1 << etype)))
616 return 0;
617 for (i = 0; i < td->o.ignore_error_nr[etype]; i++)
618 if (td->o.ignore_error[etype][i] == err)
619 return 1;
620 return 0;
621}
622
623static inline void update_error_count(struct thread_data *td, int err)
624{
625 td->total_err_count++;
626 if (td->total_err_count == 1)
627 td->first_error = err;
628}
629
630static inline int should_fsync(struct thread_data *td)
631{
632 if (td->last_was_sync)
633 return 0;
634 if (td->o.odirect)
635 return 0;
636 if (td_write(td) || td_rw(td) || td->o.override_sync)
637 return 1;
638
639 return 0;
640}
641
642/*
643 * Init/option functions
644 */
645extern int __must_check parse_options(int, char **);
646extern int parse_jobs_ini(char *, int, int);
647extern int parse_cmd_line(int, char **);
648extern int fio_backend(void);
649extern void reset_fio_state(void);
650extern void clear_io_state(struct thread_data *);
651extern int fio_options_parse(struct thread_data *, char **, int);
652extern void fio_keywords_init(void);
653extern int fio_cmd_option_parse(struct thread_data *, const char *, char *);
654extern int fio_cmd_ioengine_option_parse(struct thread_data *, const char *, char *);
655extern void fio_fill_default_options(struct thread_data *);
656extern int fio_show_option_help(const char *);
657extern void fio_options_set_ioengine_opts(struct option *long_options, struct thread_data *td);
658extern void fio_options_dup_and_init(struct option *);
659extern void fio_options_mem_dupe(struct thread_data *);
660extern void options_mem_dupe(void *data, struct fio_option *options);
661extern void td_fill_rand_seeds(struct thread_data *);
662extern void add_job_opts(const char **);
663extern char *num2str(unsigned long, int, int, int);
664extern int ioengine_load(struct thread_data *);
665
666#define FIO_GETOPT_JOB 0x89000000
667#define FIO_GETOPT_IOENGINE 0x98000000
668#define FIO_NR_OPTIONS (FIO_MAX_OPTS + 128)
669
670/*
671 * ETA/status stuff
672 */
673extern void print_thread_status(void);
674extern void print_status_init(int);
675
676/*
677 * Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
678 * will never back again. It may cycle between running/verififying/fsyncing.
679 * Once the thread reaches TD_EXITED, it is just waiting for the core to
680 * reap it.
681 */
682enum {
683 TD_NOT_CREATED = 0,
684 TD_CREATED,
685 TD_INITIALIZED,
686 TD_SETTING_UP,
687 TD_RAMP,
688 TD_RUNNING,
689 TD_PRE_READING,
690 TD_VERIFYING,
691 TD_FSYNCING,
692 TD_EXITED,
693 TD_REAPED,
694};
695
696extern void td_set_runstate(struct thread_data *, int);
697#define TERMINATE_ALL (-1)
698extern void fio_terminate_threads(int);
699
700/*
701 * Memory helpers
702 */
703extern int __must_check fio_pin_memory(void);
704extern void fio_unpin_memory(void);
705extern int __must_check allocate_io_mem(struct thread_data *);
706extern void free_io_mem(struct thread_data *);
707
708/*
709 * Reset stats after ramp time completes
710 */
711extern void reset_all_stats(struct thread_data *);
712
713/*
714 * blktrace support
715 */
716#ifdef FIO_HAVE_BLKTRACE
717extern int is_blktrace(const char *);
718extern int load_blktrace(struct thread_data *, const char *);
719#endif
720
721/*
722 * Mark unused variables passed to ops functions as unused, to silence gcc
723 */
724#define fio_unused __attribute((__unused__))
725#define fio_init __attribute__((constructor))
726#define fio_exit __attribute__((destructor))
727
728#define for_each_td(td, i) \
729 for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++)
730#define for_each_file(td, f, i) \
731 if ((td)->files_index) \
732 for ((i) = 0, (f) = (td)->files[0]; \
733 (i) < (td)->o.nr_files && ((f) = (td)->files[i]) != NULL; \
734 (i)++)
735
736#define fio_assert(td, cond) do { \
737 if (!(cond)) { \
738 int *__foo = NULL; \
739 fprintf(stderr, "file:%s:%d, assert %s failed\n", __FILE__, __LINE__, #cond); \
740 td_set_runstate((td), TD_EXITED); \
741 (td)->error = EFAULT; \
742 *__foo = 0; \
743 } \
744} while (0)
745
746static inline int fio_fill_issue_time(struct thread_data *td)
747{
748 if (td->o.read_iolog_file ||
749 !td->o.disable_clat || !td->o.disable_slat || !td->o.disable_bw)
750 return 1;
751
752 return 0;
753}
754
755static inline int __should_check_rate(struct thread_data *td,
756 enum fio_ddir ddir)
757{
758 struct thread_options *o = &td->o;
759
760 /*
761 * If some rate setting was given, we need to check it
762 */
763 if (o->rate[ddir] || o->ratemin[ddir] || o->rate_iops[ddir] ||
764 o->rate_iops_min[ddir])
765 return 1;
766
767 return 0;
768}
769
770static inline int should_check_rate(struct thread_data *td,
771 unsigned long *bytes_done)
772{
773 int ret = 0;
774
775 if (bytes_done[DDIR_READ])
776 ret |= __should_check_rate(td, DDIR_READ);
777 if (bytes_done[DDIR_WRITE])
778 ret |= __should_check_rate(td, DDIR_WRITE);
779 if (bytes_done[DDIR_TRIM])
780 ret |= __should_check_rate(td, DDIR_TRIM);
781
782 return ret;
783}
784
785static inline int is_power_of_2(unsigned int val)
786{
787 return (val != 0 && ((val & (val - 1)) == 0));
788}
789
790/*
791 * We currently only need to do locking if we have verifier threads
792 * accessing our internal structures too
793 */
794static inline void td_io_u_lock(struct thread_data *td)
795{
796 if (td->o.verify_async)
797 pthread_mutex_lock(&td->io_u_lock);
798}
799
800static inline void td_io_u_unlock(struct thread_data *td)
801{
802 if (td->o.verify_async)
803 pthread_mutex_unlock(&td->io_u_lock);
804}
805
806static inline void td_io_u_free_notify(struct thread_data *td)
807{
808 if (td->o.verify_async)
809 pthread_cond_signal(&td->free_cond);
810}
811
812extern const char *fio_get_arch_string(int);
813extern const char *fio_get_os_string(int);
814
815enum {
816 FIO_OUTPUT_TERSE = 0,
817 FIO_OUTPUT_JSON,
818 FIO_OUTPUT_NORMAL,
819};
820
821enum {
822 FIO_RAND_DIST_RANDOM = 0,
823 FIO_RAND_DIST_ZIPF,
824 FIO_RAND_DIST_PARETO,
825};
826
827enum {
828 FIO_RAND_GEN_TAUSWORTHE = 0,
829 FIO_RAND_GEN_LFSR,
830};
831
832#endif
fio - Flexible IO Tester