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Refactor fio_show_ioengine_help()
[fio.git] / fio.h
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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
17#include "compiler/compiler.h"
18#include "thread_options.h"
19#include "flist.h"
20#include "fifo.h"
21#include "arch/arch.h"
22#include "os/os.h"
23#include "mutex.h"
24#include "log.h"
25#include "debug.h"
26#include "file.h"
27#include "io_ddir.h"
28#include "ioengine.h"
29#include "iolog.h"
30#include "helpers.h"
31#include "options.h"
32#include "profile.h"
33#include "fio_time.h"
34#include "gettime.h"
35#include "oslib/getopt.h"
36#include "lib/rand.h"
37#include "lib/rbtree.h"
38#include "client.h"
39#include "server.h"
40#include "stat.h"
41#include "flow.h"
42#include "io_u_queue.h"
43#include "workqueue.h"
44#include "steadystate.h"
45
46#ifdef CONFIG_SOLARISAIO
47#include <sys/asynch.h>
48#endif
49
50#ifdef CONFIG_LIBNUMA
51#include <linux/mempolicy.h>
52#include <numa.h>
53
54/*
55 * "local" is pseudo-policy
56 */
57#define MPOL_LOCAL MPOL_MAX
58#endif
59
60/*
61 * offset generator types
62 */
63enum {
64 RW_SEQ_SEQ = 0,
65 RW_SEQ_IDENT,
66};
67
68enum {
69 TD_F_VER_BACKLOG = 1U << 0,
70 TD_F_TRIM_BACKLOG = 1U << 1,
71 TD_F_READ_IOLOG = 1U << 2,
72 TD_F_REFILL_BUFFERS = 1U << 3,
73 TD_F_SCRAMBLE_BUFFERS = 1U << 4,
74 TD_F_VER_NONE = 1U << 5,
75 TD_F_PROFILE_OPS = 1U << 6,
76 TD_F_COMPRESS = 1U << 7,
77 TD_F_NOIO = 1U << 8,
78 TD_F_COMPRESS_LOG = 1U << 9,
79 TD_F_VSTATE_SAVED = 1U << 10,
80 TD_F_NEED_LOCK = 1U << 11,
81 TD_F_CHILD = 1U << 12,
82 TD_F_NO_PROGRESS = 1U << 13,
83 TD_F_REGROW_LOGS = 1U << 14,
84};
85
86enum {
87 FIO_RAND_BS_OFF = 0,
88 FIO_RAND_VER_OFF,
89 FIO_RAND_MIX_OFF,
90 FIO_RAND_FILE_OFF,
91 FIO_RAND_BLOCK_OFF,
92 FIO_RAND_FILE_SIZE_OFF,
93 FIO_RAND_TRIM_OFF,
94 FIO_RAND_BUF_OFF,
95 FIO_RAND_SEQ_RAND_READ_OFF,
96 FIO_RAND_SEQ_RAND_WRITE_OFF,
97 FIO_RAND_SEQ_RAND_TRIM_OFF,
98 FIO_RAND_START_DELAY,
99 FIO_DEDUPE_OFF,
100 FIO_RAND_POISSON_OFF,
101 FIO_RAND_ZONE_OFF,
102 FIO_RAND_NR_OFFS,
103};
104
105enum {
106 IO_MODE_INLINE = 0,
107 IO_MODE_OFFLOAD = 1,
108
109 RATE_PROCESS_LINEAR = 0,
110 RATE_PROCESS_POISSON = 1,
111};
112
113enum {
114 F_ADV_NONE = 0,
115 F_ADV_TYPE,
116 F_ADV_RANDOM,
117 F_ADV_SEQUENTIAL,
118};
119
120/*
121 * Per-thread/process specific data. Only used for the network client
122 * for now.
123 */
124struct sk_out;
125void sk_out_assign(struct sk_out *);
126void sk_out_drop(void);
127
128struct zone_split_index {
129 uint8_t size_perc;
130 uint8_t size_perc_prev;
131};
132
133/*
134 * This describes a single thread/process executing a fio job.
135 */
136struct thread_data {
137 struct flist_head opt_list;
138 unsigned long flags;
139 struct thread_options o;
140 void *eo;
141 pthread_t thread;
142 unsigned int thread_number;
143 unsigned int subjob_number;
144 unsigned int groupid;
145 struct thread_stat ts;
146
147 int client_type;
148
149 struct io_log *slat_log;
150 struct io_log *clat_log;
151 struct io_log *clat_hist_log;
152 struct io_log *lat_log;
153 struct io_log *bw_log;
154 struct io_log *iops_log;
155
156 struct workqueue log_compress_wq;
157
158 struct thread_data *parent;
159
160 uint64_t stat_io_bytes[DDIR_RWDIR_CNT];
161 struct timeval bw_sample_time;
162
163 uint64_t stat_io_blocks[DDIR_RWDIR_CNT];
164 struct timeval iops_sample_time;
165
166 volatile int update_rusage;
167 struct fio_mutex *rusage_sem;
168 struct rusage ru_start;
169 struct rusage ru_end;
170
171 struct fio_file **files;
172 unsigned char *file_locks;
173 unsigned int files_size;
174 unsigned int files_index;
175 unsigned int nr_open_files;
176 unsigned int nr_done_files;
177 unsigned int nr_normal_files;
178 union {
179 unsigned int next_file;
180 struct frand_state next_file_state;
181 };
182 union {
183 struct zipf_state next_file_zipf;
184 struct gauss_state next_file_gauss;
185 };
186 union {
187 double zipf_theta;
188 double pareto_h;
189 double gauss_dev;
190 };
191 int error;
192 int sig;
193 int done;
194 int stop_io;
195 pid_t pid;
196 char *orig_buffer;
197 size_t orig_buffer_size;
198 volatile int terminate;
199 volatile int runstate;
200 unsigned int last_was_sync;
201 enum fio_ddir last_ddir;
202
203 int mmapfd;
204
205 void *iolog_buf;
206 FILE *iolog_f;
207
208 char *sysfs_root;
209
210 unsigned long rand_seeds[FIO_RAND_NR_OFFS];
211
212 struct frand_state bsrange_state;
213 struct frand_state verify_state;
214 struct frand_state trim_state;
215 struct frand_state delay_state;
216
217 struct frand_state buf_state;
218 struct frand_state buf_state_prev;
219 struct frand_state dedupe_state;
220 struct frand_state zone_state;
221
222 struct zone_split_index **zone_state_index;
223
224 unsigned int verify_batch;
225 unsigned int trim_batch;
226
227 struct thread_io_list *vstate;
228
229 int shm_id;
230
231 /*
232 * IO engine hooks, contains everything needed to submit an io_u
233 * to any of the available IO engines.
234 */
235 struct ioengine_ops *io_ops;
236
237 /*
238 * IO engine private data and dlhandle.
239 */
240 void *io_ops_data;
241 void *io_ops_dlhandle;
242
243 /*
244 * Queue depth of io_u's that fio MIGHT do
245 */
246 unsigned int cur_depth;
247
248 /*
249 * io_u's about to be committed
250 */
251 unsigned int io_u_queued;
252
253 /*
254 * io_u's submitted but not completed yet
255 */
256 unsigned int io_u_in_flight;
257
258 /*
259 * List of free and busy io_u's
260 */
261 struct io_u_ring io_u_requeues;
262 struct io_u_queue io_u_freelist;
263 struct io_u_queue io_u_all;
264 pthread_mutex_t io_u_lock;
265 pthread_cond_t free_cond;
266
267 /*
268 * async verify offload
269 */
270 struct flist_head verify_list;
271 pthread_t *verify_threads;
272 unsigned int nr_verify_threads;
273 pthread_cond_t verify_cond;
274 int verify_thread_exit;
275
276 /*
277 * Rate state
278 */
279 uint64_t rate_bps[DDIR_RWDIR_CNT];
280 uint64_t rate_next_io_time[DDIR_RWDIR_CNT];
281 unsigned long rate_bytes[DDIR_RWDIR_CNT];
282 unsigned long rate_blocks[DDIR_RWDIR_CNT];
283 unsigned long long rate_io_issue_bytes[DDIR_RWDIR_CNT];
284 struct timeval lastrate[DDIR_RWDIR_CNT];
285 int64_t last_usec;
286 struct frand_state poisson_state;
287
288 /*
289 * Enforced rate submission/completion workqueue
290 */
291 struct workqueue io_wq;
292
293 uint64_t total_io_size;
294 uint64_t fill_device_size;
295
296 /*
297 * Issue side
298 */
299 uint64_t io_issues[DDIR_RWDIR_CNT];
300 uint64_t io_issue_bytes[DDIR_RWDIR_CNT];
301 uint64_t loops;
302
303 /*
304 * Completions
305 */
306 uint64_t io_blocks[DDIR_RWDIR_CNT];
307 uint64_t this_io_blocks[DDIR_RWDIR_CNT];
308 uint64_t io_bytes[DDIR_RWDIR_CNT];
309 uint64_t this_io_bytes[DDIR_RWDIR_CNT];
310 uint64_t io_skip_bytes;
311 uint64_t zone_bytes;
312 struct fio_mutex *mutex;
313 uint64_t bytes_done[DDIR_RWDIR_CNT];
314
315 /*
316 * State for random io, a bitmap of blocks done vs not done
317 */
318 struct frand_state random_state;
319
320 struct timeval start; /* start of this loop */
321 struct timeval epoch; /* time job was started */
322 unsigned long long unix_epoch; /* Time job was started, unix epoch based. */
323 struct timeval last_issue;
324 long time_offset;
325 struct timeval tv_cache;
326 struct timeval terminate_time;
327 unsigned int tv_cache_nr;
328 unsigned int tv_cache_mask;
329 unsigned int ramp_time_over;
330
331 /*
332 * Time since last latency_window was started
333 */
334 struct timeval latency_ts;
335 unsigned int latency_qd;
336 unsigned int latency_qd_high;
337 unsigned int latency_qd_low;
338 unsigned int latency_failed;
339 uint64_t latency_ios;
340 int latency_end_run;
341
342 /*
343 * read/write mixed workload state
344 */
345 struct frand_state rwmix_state;
346 unsigned long rwmix_issues;
347 enum fio_ddir rwmix_ddir;
348 unsigned int ddir_seq_nr;
349
350 /*
351 * rand/seq mixed workload state
352 */
353 struct frand_state seq_rand_state[DDIR_RWDIR_CNT];
354
355 /*
356 * IO history logs for verification. We use a tree for sorting,
357 * if we are overwriting. Otherwise just use a fifo.
358 */
359 struct rb_root io_hist_tree;
360 struct flist_head io_hist_list;
361 unsigned long io_hist_len;
362
363 /*
364 * For IO replaying
365 */
366 struct flist_head io_log_list;
367
368 /*
369 * For tracking/handling discards
370 */
371 struct flist_head trim_list;
372 unsigned long trim_entries;
373
374 struct flist_head next_rand_list;
375
376 /*
377 * for fileservice, how often to switch to a new file
378 */
379 unsigned int file_service_nr;
380 unsigned int file_service_left;
381 struct fio_file *file_service_file;
382
383 unsigned int sync_file_range_nr;
384
385 /*
386 * For generating file sizes
387 */
388 struct frand_state file_size_state;
389
390 /*
391 * Error counts
392 */
393 unsigned int total_err_count;
394 int first_error;
395
396 struct fio_flow *flow;
397
398 /*
399 * Can be overloaded by profiles
400 */
401 struct prof_io_ops prof_io_ops;
402 void *prof_data;
403
404 void *pinned_mem;
405
406 struct steadystate_data ss;
407
408 char verror[FIO_VERROR_SIZE];
409};
410
411/*
412 * when should interactive ETA output be generated
413 */
414enum {
415 FIO_ETA_AUTO,
416 FIO_ETA_ALWAYS,
417 FIO_ETA_NEVER,
418};
419
420#define __td_verror(td, err, msg, func) \
421 do { \
422 unsigned int ____e = (err); \
423 if ((td)->error) \
424 break; \
425 (td)->error = ____e; \
426 if (!(td)->first_error) \
427 snprintf(td->verror, sizeof(td->verror), "file:%s:%d, func=%s, error=%s", __FILE__, __LINE__, (func), (msg)); \
428 } while (0)
429
430
431#define td_clear_error(td) do { \
432 (td)->error = 0; \
433 if ((td)->parent) \
434 (td)->parent->error = 0; \
435} while (0)
436
437#define td_verror(td, err, func) do { \
438 __td_verror((td), (err), strerror((err)), (func)); \
439 if ((td)->parent) \
440 __td_verror((td)->parent, (err), strerror((err)), (func)); \
441} while (0)
442
443#define td_vmsg(td, err, msg, func) do { \
444 __td_verror((td), (err), (msg), (func)); \
445 if ((td)->parent) \
446 __td_verror((td)->parent, (err), (msg), (func)); \
447} while (0)
448
449#define __fio_stringify_1(x) #x
450#define __fio_stringify(x) __fio_stringify_1(x)
451
452extern int exitall_on_terminate;
453extern unsigned int thread_number;
454extern unsigned int stat_number;
455extern int shm_id;
456extern int groupid;
457extern int output_format;
458extern int append_terse_output;
459extern int temp_stall_ts;
460extern uintptr_t page_mask, page_size;
461extern int read_only;
462extern int eta_print;
463extern int eta_new_line;
464extern unsigned long done_secs;
465extern int fio_gtod_offload;
466extern int fio_gtod_cpu;
467extern enum fio_cs fio_clock_source;
468extern int fio_clock_source_set;
469extern int warnings_fatal;
470extern int terse_version;
471extern int is_backend;
472extern int nr_clients;
473extern int log_syslog;
474extern int status_interval;
475extern const char fio_version_string[];
476extern char *trigger_file;
477extern char *trigger_cmd;
478extern char *trigger_remote_cmd;
479extern long long trigger_timeout;
480extern char *aux_path;
481
482extern struct thread_data *threads;
483
484static inline void fio_ro_check(const struct thread_data *td, struct io_u *io_u)
485{
486 assert(!(io_u->ddir == DDIR_WRITE && !td_write(td)));
487}
488
489#define REAL_MAX_JOBS 4096
490
491static inline int should_fsync(struct thread_data *td)
492{
493 if (td->last_was_sync)
494 return 0;
495 if (td_write(td) || td_rw(td) || td->o.override_sync)
496 return 1;
497
498 return 0;
499}
500
501/*
502 * Init/option functions
503 */
504extern int __must_check fio_init_options(void);
505extern int __must_check parse_options(int, char **);
506extern int parse_jobs_ini(char *, int, int, int);
507extern int parse_cmd_line(int, char **, int);
508extern int fio_backend(struct sk_out *);
509extern void reset_fio_state(void);
510extern void clear_io_state(struct thread_data *, int);
511extern int fio_options_parse(struct thread_data *, char **, int);
512extern void fio_keywords_init(void);
513extern void fio_keywords_exit(void);
514extern int fio_cmd_option_parse(struct thread_data *, const char *, char *);
515extern int fio_cmd_ioengine_option_parse(struct thread_data *, const char *, char *);
516extern void fio_fill_default_options(struct thread_data *);
517extern int fio_show_option_help(const char *);
518extern void fio_options_set_ioengine_opts(struct option *long_options, struct thread_data *td);
519extern void fio_options_dup_and_init(struct option *);
520extern void fio_options_mem_dupe(struct thread_data *);
521extern void options_mem_dupe(void *data, struct fio_option *options);
522extern void td_fill_rand_seeds(struct thread_data *);
523extern void td_fill_verify_state_seed(struct thread_data *);
524extern void add_job_opts(const char **, int);
525extern char *num2str(uint64_t, int, int, int, int);
526extern int ioengine_load(struct thread_data *);
527extern bool parse_dryrun(void);
528extern int fio_running_or_pending_io_threads(void);
529extern int fio_set_fd_nonblocking(int, const char *);
530extern void sig_show_status(int sig);
531extern struct thread_data *get_global_options(void);
532
533extern uintptr_t page_mask;
534extern uintptr_t page_size;
535extern int initialize_fio(char *envp[]);
536extern void deinitialize_fio(void);
537
538#define N2S_NONE 0
539#define N2S_BITPERSEC 1 /* match unit_base for bit rates */
540#define N2S_PERSEC 2
541#define N2S_BIT 3
542#define N2S_BYTE 4
543#define N2S_BYTEPERSEC 8 /* match unit_base for byte rates */
544
545#define FIO_GETOPT_JOB 0x89000000
546#define FIO_GETOPT_IOENGINE 0x98000000
547#define FIO_NR_OPTIONS (FIO_MAX_OPTS + 128)
548
549/*
550 * ETA/status stuff
551 */
552extern void print_thread_status(void);
553extern void print_status_init(int);
554extern char *fio_uint_to_kmg(unsigned int val);
555
556/*
557 * Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
558 * will never back again. It may cycle between running/verififying/fsyncing.
559 * Once the thread reaches TD_EXITED, it is just waiting for the core to
560 * reap it.
561 */
562enum {
563 TD_NOT_CREATED = 0,
564 TD_CREATED,
565 TD_INITIALIZED,
566 TD_RAMP,
567 TD_SETTING_UP,
568 TD_RUNNING,
569 TD_PRE_READING,
570 TD_VERIFYING,
571 TD_FSYNCING,
572 TD_FINISHING,
573 TD_EXITED,
574 TD_REAPED,
575 TD_LAST,
576 TD_NR,
577};
578
579#define TD_ENG_FLAG_SHIFT 16
580#define TD_ENG_FLAG_MASK ((1U << 16) - 1)
581
582static inline enum fio_ioengine_flags td_ioengine_flags(struct thread_data *td)
583{
584 return (enum fio_ioengine_flags)
585 ((td->flags >> TD_ENG_FLAG_SHIFT) & TD_ENG_FLAG_MASK);
586}
587
588static inline void td_set_ioengine_flags(struct thread_data *td)
589{
590 td->flags |= (td->io_ops->flags << TD_ENG_FLAG_SHIFT);
591}
592
593static inline bool td_ioengine_flagged(struct thread_data *td,
594 enum fio_ioengine_flags flags)
595{
596 return ((td->flags >> TD_ENG_FLAG_SHIFT) & flags) != 0;
597}
598
599extern void td_set_runstate(struct thread_data *, int);
600extern int td_bump_runstate(struct thread_data *, int);
601extern void td_restore_runstate(struct thread_data *, int);
602extern const char *runstate_to_name(int runstate);
603
604/*
605 * Allow 60 seconds for a job to quit on its own, otherwise reap with
606 * a vengeance.
607 */
608#define FIO_REAP_TIMEOUT 300
609
610#define TERMINATE_ALL (-1U)
611extern void fio_terminate_threads(unsigned int);
612extern void fio_mark_td_terminate(struct thread_data *);
613
614/*
615 * Memory helpers
616 */
617extern int __must_check fio_pin_memory(struct thread_data *);
618extern void fio_unpin_memory(struct thread_data *);
619extern int __must_check allocate_io_mem(struct thread_data *);
620extern void free_io_mem(struct thread_data *);
621extern void free_threads_shm(void);
622
623/*
624 * Reset stats after ramp time completes
625 */
626extern void reset_all_stats(struct thread_data *);
627
628/*
629 * blktrace support
630 */
631#ifdef FIO_HAVE_BLKTRACE
632extern int is_blktrace(const char *, int *);
633extern int load_blktrace(struct thread_data *, const char *, int);
634#endif
635
636extern int io_queue_event(struct thread_data *td, struct io_u *io_u, int *ret,
637 enum fio_ddir ddir, uint64_t *bytes_issued, int from_verify,
638 struct timeval *comp_time);
639
640/*
641 * Latency target helpers
642 */
643extern void lat_target_check(struct thread_data *);
644extern void lat_target_init(struct thread_data *);
645extern void lat_target_reset(struct thread_data *);
646
647#define for_each_td(td, i) \
648 for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++)
649#define for_each_file(td, f, i) \
650 if ((td)->files_index) \
651 for ((i) = 0, (f) = (td)->files[0]; \
652 (i) < (td)->o.nr_files && ((f) = (td)->files[i]) != NULL; \
653 (i)++)
654
655#define fio_assert(td, cond) do { \
656 if (!(cond)) { \
657 int *__foo = NULL; \
658 fprintf(stderr, "file:%s:%d, assert %s failed\n", __FILE__, __LINE__, #cond); \
659 td_set_runstate((td), TD_EXITED); \
660 (td)->error = EFAULT; \
661 *__foo = 0; \
662 } \
663} while (0)
664
665static inline bool fio_fill_issue_time(struct thread_data *td)
666{
667 if (td->o.read_iolog_file ||
668 !td->o.disable_clat || !td->o.disable_slat || !td->o.disable_bw)
669 return true;
670
671 return false;
672}
673
674static inline bool __should_check_rate(struct thread_data *td,
675 enum fio_ddir ddir)
676{
677 struct thread_options *o = &td->o;
678
679 /*
680 * If some rate setting was given, we need to check it
681 */
682 if (o->rate[ddir] || o->ratemin[ddir] || o->rate_iops[ddir] ||
683 o->rate_iops_min[ddir])
684 return true;
685
686 return false;
687}
688
689static inline bool should_check_rate(struct thread_data *td)
690{
691 if (td->bytes_done[DDIR_READ] && __should_check_rate(td, DDIR_READ))
692 return true;
693 if (td->bytes_done[DDIR_WRITE] && __should_check_rate(td, DDIR_WRITE))
694 return true;
695 if (td->bytes_done[DDIR_TRIM] && __should_check_rate(td, DDIR_TRIM))
696 return true;
697
698 return false;
699}
700
701static inline unsigned int td_max_bs(struct thread_data *td)
702{
703 unsigned int max_bs;
704
705 max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]);
706 return max(td->o.max_bs[DDIR_TRIM], max_bs);
707}
708
709static inline unsigned int td_min_bs(struct thread_data *td)
710{
711 unsigned int min_bs;
712
713 min_bs = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
714 return min(td->o.min_bs[DDIR_TRIM], min_bs);
715}
716
717static inline bool td_async_processing(struct thread_data *td)
718{
719 return (td->flags & TD_F_NEED_LOCK) != 0;
720}
721
722/*
723 * We currently only need to do locking if we have verifier threads
724 * accessing our internal structures too
725 */
726static inline void td_io_u_lock(struct thread_data *td)
727{
728 if (td_async_processing(td))
729 pthread_mutex_lock(&td->io_u_lock);
730}
731
732static inline void td_io_u_unlock(struct thread_data *td)
733{
734 if (td_async_processing(td))
735 pthread_mutex_unlock(&td->io_u_lock);
736}
737
738static inline void td_io_u_free_notify(struct thread_data *td)
739{
740 if (td_async_processing(td))
741 pthread_cond_signal(&td->free_cond);
742}
743
744static inline void td_flags_clear(struct thread_data *td, unsigned int *flags,
745 unsigned int value)
746{
747 if (!td_async_processing(td))
748 *flags &= ~value;
749 else
750 __sync_fetch_and_and(flags, ~value);
751}
752
753static inline void td_flags_set(struct thread_data *td, unsigned int *flags,
754 unsigned int value)
755{
756 if (!td_async_processing(td))
757 *flags |= value;
758 else
759 __sync_fetch_and_or(flags, value);
760}
761
762extern const char *fio_get_arch_string(int);
763extern const char *fio_get_os_string(int);
764
765#ifdef FIO_INTERNAL
766#define ARRAY_SIZE(x) (sizeof((x)) / (sizeof((x)[0])))
767#define FIELD_SIZE(s, f) (sizeof(((typeof(s))0)->f))
768#endif
769
770enum {
771 __FIO_OUTPUT_TERSE = 0,
772 __FIO_OUTPUT_JSON = 1,
773 __FIO_OUTPUT_NORMAL = 2,
774 __FIO_OUTPUT_JSON_PLUS = 3,
775 FIO_OUTPUT_NR = 4,
776
777 FIO_OUTPUT_TERSE = 1U << __FIO_OUTPUT_TERSE,
778 FIO_OUTPUT_JSON = 1U << __FIO_OUTPUT_JSON,
779 FIO_OUTPUT_NORMAL = 1U << __FIO_OUTPUT_NORMAL,
780 FIO_OUTPUT_JSON_PLUS = 1U << __FIO_OUTPUT_JSON_PLUS,
781};
782
783enum {
784 FIO_RAND_DIST_RANDOM = 0,
785 FIO_RAND_DIST_ZIPF,
786 FIO_RAND_DIST_PARETO,
787 FIO_RAND_DIST_GAUSS,
788 FIO_RAND_DIST_ZONED,
789};
790
791#define FIO_DEF_ZIPF 1.1
792#define FIO_DEF_PARETO 0.2
793
794enum {
795 FIO_RAND_GEN_TAUSWORTHE = 0,
796 FIO_RAND_GEN_LFSR,
797 FIO_RAND_GEN_TAUSWORTHE64,
798};
799
800enum {
801 FIO_CPUS_SHARED = 0,
802 FIO_CPUS_SPLIT,
803};
804
805extern void exec_trigger(const char *);
806extern void check_trigger_file(void);
807
808#endif
fio - Flexible IO Tester