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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 unsigned long rand_seeds[FIO_RAND_NR_OFFS];
209
210 struct frand_state bsrange_state;
211 struct frand_state verify_state;
212 struct frand_state trim_state;
213 struct frand_state delay_state;
214
215 struct frand_state buf_state;
216 struct frand_state buf_state_prev;
217 struct frand_state dedupe_state;
218 struct frand_state zone_state;
219
220 struct zone_split_index **zone_state_index;
221
222 unsigned int verify_batch;
223 unsigned int trim_batch;
224
225 struct thread_io_list *vstate;
226
227 int shm_id;
228
229 /*
230 * IO engine hooks, contains everything needed to submit an io_u
231 * to any of the available IO engines.
232 */
233 struct ioengine_ops *io_ops;
234
235 /*
236 * IO engine private data and dlhandle.
237 */
238 void *io_ops_data;
239 void *io_ops_dlhandle;
240
241 /*
242 * Queue depth of io_u's that fio MIGHT do
243 */
244 unsigned int cur_depth;
245
246 /*
247 * io_u's about to be committed
248 */
249 unsigned int io_u_queued;
250
251 /*
252 * io_u's submitted but not completed yet
253 */
254 unsigned int io_u_in_flight;
255
256 /*
257 * List of free and busy io_u's
258 */
259 struct io_u_ring io_u_requeues;
260 struct io_u_queue io_u_freelist;
261 struct io_u_queue io_u_all;
262 pthread_mutex_t io_u_lock;
263 pthread_cond_t free_cond;
264
265 /*
266 * async verify offload
267 */
268 struct flist_head verify_list;
269 pthread_t *verify_threads;
270 unsigned int nr_verify_threads;
271 pthread_cond_t verify_cond;
272 int verify_thread_exit;
273
274 /*
275 * Rate state
276 */
277 uint64_t rate_bps[DDIR_RWDIR_CNT];
278 uint64_t rate_next_io_time[DDIR_RWDIR_CNT];
279 unsigned long rate_bytes[DDIR_RWDIR_CNT];
280 unsigned long rate_blocks[DDIR_RWDIR_CNT];
281 unsigned long long rate_io_issue_bytes[DDIR_RWDIR_CNT];
282 struct timeval lastrate[DDIR_RWDIR_CNT];
283 int64_t last_usec;
284 struct frand_state poisson_state;
285
286 /*
287 * Enforced rate submission/completion workqueue
288 */
289 struct workqueue io_wq;
290
291 uint64_t total_io_size;
292 uint64_t fill_device_size;
293
294 /*
295 * Issue side
296 */
297 uint64_t io_issues[DDIR_RWDIR_CNT];
298 uint64_t io_issue_bytes[DDIR_RWDIR_CNT];
299 uint64_t loops;
300
301 /*
302 * Completions
303 */
304 uint64_t io_blocks[DDIR_RWDIR_CNT];
305 uint64_t this_io_blocks[DDIR_RWDIR_CNT];
306 uint64_t io_bytes[DDIR_RWDIR_CNT];
307 uint64_t this_io_bytes[DDIR_RWDIR_CNT];
308 uint64_t io_skip_bytes;
309 uint64_t zone_bytes;
310 struct fio_mutex *mutex;
311 uint64_t bytes_done[DDIR_RWDIR_CNT];
312
313 /*
314 * State for random io, a bitmap of blocks done vs not done
315 */
316 struct frand_state random_state;
317
318 struct timeval start; /* start of this loop */
319 struct timeval epoch; /* time job was started */
320 unsigned long long unix_epoch; /* Time job was started, unix epoch based. */
321 struct timeval last_issue;
322 long time_offset;
323 struct timeval tv_cache;
324 struct timeval terminate_time;
325 unsigned int tv_cache_nr;
326 unsigned int tv_cache_mask;
327 unsigned int ramp_time_over;
328
329 /*
330 * Time since last latency_window was started
331 */
332 struct timeval latency_ts;
333 unsigned int latency_qd;
334 unsigned int latency_qd_high;
335 unsigned int latency_qd_low;
336 unsigned int latency_failed;
337 uint64_t latency_ios;
338 int latency_end_run;
339
340 /*
341 * read/write mixed workload state
342 */
343 struct frand_state rwmix_state;
344 unsigned long rwmix_issues;
345 enum fio_ddir rwmix_ddir;
346 unsigned int ddir_seq_nr;
347
348 /*
349 * rand/seq mixed workload state
350 */
351 struct frand_state seq_rand_state[DDIR_RWDIR_CNT];
352
353 /*
354 * IO history logs for verification. We use a tree for sorting,
355 * if we are overwriting. Otherwise just use a fifo.
356 */
357 struct rb_root io_hist_tree;
358 struct flist_head io_hist_list;
359 unsigned long io_hist_len;
360
361 /*
362 * For IO replaying
363 */
364 struct flist_head io_log_list;
365
366 /*
367 * For tracking/handling discards
368 */
369 struct flist_head trim_list;
370 unsigned long trim_entries;
371
372 struct flist_head next_rand_list;
373
374 /*
375 * for fileservice, how often to switch to a new file
376 */
377 unsigned int file_service_nr;
378 unsigned int file_service_left;
379 struct fio_file *file_service_file;
380
381 unsigned int sync_file_range_nr;
382
383 /*
384 * For generating file sizes
385 */
386 struct frand_state file_size_state;
387
388 /*
389 * Error counts
390 */
391 unsigned int total_err_count;
392 int first_error;
393
394 struct fio_flow *flow;
395
396 /*
397 * Can be overloaded by profiles
398 */
399 struct prof_io_ops prof_io_ops;
400 void *prof_data;
401
402 void *pinned_mem;
403
404 struct steadystate_data ss;
405
406 char verror[FIO_VERROR_SIZE];
407};
408
409/*
410 * when should interactive ETA output be generated
411 */
412enum {
413 FIO_ETA_AUTO,
414 FIO_ETA_ALWAYS,
415 FIO_ETA_NEVER,
416};
417
418#define __td_verror(td, err, msg, func) \
419 do { \
420 unsigned int ____e = (err); \
421 if ((td)->error) \
422 break; \
423 (td)->error = ____e; \
424 if (!(td)->first_error) \
425 snprintf(td->verror, sizeof(td->verror), "file:%s:%d, func=%s, error=%s", __FILE__, __LINE__, (func), (msg)); \
426 } while (0)
427
428
429#define td_clear_error(td) do { \
430 (td)->error = 0; \
431 if ((td)->parent) \
432 (td)->parent->error = 0; \
433} while (0)
434
435#define td_verror(td, err, func) do { \
436 __td_verror((td), (err), strerror((err)), (func)); \
437 if ((td)->parent) \
438 __td_verror((td)->parent, (err), strerror((err)), (func)); \
439} while (0)
440
441#define td_vmsg(td, err, msg, func) do { \
442 __td_verror((td), (err), (msg), (func)); \
443 if ((td)->parent) \
444 __td_verror((td)->parent, (err), (msg), (func)); \
445} while (0)
446
447#define __fio_stringify_1(x) #x
448#define __fio_stringify(x) __fio_stringify_1(x)
449
450extern int exitall_on_terminate;
451extern unsigned int thread_number;
452extern unsigned int stat_number;
453extern int shm_id;
454extern int groupid;
455extern int output_format;
456extern int append_terse_output;
457extern int temp_stall_ts;
458extern uintptr_t page_mask, page_size;
459extern int read_only;
460extern int eta_print;
461extern int eta_new_line;
462extern unsigned long done_secs;
463extern int fio_gtod_offload;
464extern int fio_gtod_cpu;
465extern enum fio_cs fio_clock_source;
466extern int fio_clock_source_set;
467extern int warnings_fatal;
468extern int terse_version;
469extern int is_backend;
470extern int nr_clients;
471extern int log_syslog;
472extern int status_interval;
473extern const char fio_version_string[];
474extern char *trigger_file;
475extern char *trigger_cmd;
476extern char *trigger_remote_cmd;
477extern long long trigger_timeout;
478extern char *aux_path;
479
480extern struct thread_data *threads;
481
482static inline void fio_ro_check(const struct thread_data *td, struct io_u *io_u)
483{
484 assert(!(io_u->ddir == DDIR_WRITE && !td_write(td)));
485}
486
487#define REAL_MAX_JOBS 4096
488
489static inline int should_fsync(struct thread_data *td)
490{
491 if (td->last_was_sync)
492 return 0;
493 if (td_write(td) || td_rw(td) || td->o.override_sync)
494 return 1;
495
496 return 0;
497}
498
499/*
500 * Init/option functions
501 */
502extern int __must_check fio_init_options(void);
503extern int __must_check parse_options(int, char **);
504extern int parse_jobs_ini(char *, int, int, int);
505extern int parse_cmd_line(int, char **, int);
506extern int fio_backend(struct sk_out *);
507extern void reset_fio_state(void);
508extern void clear_io_state(struct thread_data *, int);
509extern int fio_options_parse(struct thread_data *, char **, int);
510extern void fio_keywords_init(void);
511extern void fio_keywords_exit(void);
512extern int fio_cmd_option_parse(struct thread_data *, const char *, char *);
513extern int fio_cmd_ioengine_option_parse(struct thread_data *, const char *, char *);
514extern void fio_fill_default_options(struct thread_data *);
515extern int fio_show_option_help(const char *);
516extern void fio_options_set_ioengine_opts(struct option *long_options, struct thread_data *td);
517extern void fio_options_dup_and_init(struct option *);
518extern void fio_options_mem_dupe(struct thread_data *);
519extern void td_fill_rand_seeds(struct thread_data *);
520extern void td_fill_verify_state_seed(struct thread_data *);
521extern void add_job_opts(const char **, int);
522extern char *num2str(uint64_t, int, int, int, int);
523extern int ioengine_load(struct thread_data *);
524extern bool parse_dryrun(void);
525extern int fio_running_or_pending_io_threads(void);
526extern int fio_set_fd_nonblocking(int, const char *);
527extern void sig_show_status(int sig);
528extern struct thread_data *get_global_options(void);
529
530extern uintptr_t page_mask;
531extern uintptr_t page_size;
532extern int initialize_fio(char *envp[]);
533extern void deinitialize_fio(void);
534
535#define N2S_NONE 0
536#define N2S_BITPERSEC 1 /* match unit_base for bit rates */
537#define N2S_PERSEC 2
538#define N2S_BIT 3
539#define N2S_BYTE 4
540#define N2S_BYTEPERSEC 8 /* match unit_base for byte rates */
541
542#define FIO_GETOPT_JOB 0x89000000
543#define FIO_GETOPT_IOENGINE 0x98000000
544#define FIO_NR_OPTIONS (FIO_MAX_OPTS + 128)
545
546/*
547 * ETA/status stuff
548 */
549extern void print_thread_status(void);
550extern void print_status_init(int);
551extern char *fio_uint_to_kmg(unsigned int val);
552
553/*
554 * Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
555 * will never back again. It may cycle between running/verififying/fsyncing.
556 * Once the thread reaches TD_EXITED, it is just waiting for the core to
557 * reap it.
558 */
559enum {
560 TD_NOT_CREATED = 0,
561 TD_CREATED,
562 TD_INITIALIZED,
563 TD_RAMP,
564 TD_SETTING_UP,
565 TD_RUNNING,
566 TD_PRE_READING,
567 TD_VERIFYING,
568 TD_FSYNCING,
569 TD_FINISHING,
570 TD_EXITED,
571 TD_REAPED,
572 TD_LAST,
573 TD_NR,
574};
575
576#define TD_ENG_FLAG_SHIFT 16
577#define TD_ENG_FLAG_MASK ((1U << 16) - 1)
578
579static inline enum fio_ioengine_flags td_ioengine_flags(struct thread_data *td)
580{
581 return (enum fio_ioengine_flags)
582 ((td->flags >> TD_ENG_FLAG_SHIFT) & TD_ENG_FLAG_MASK);
583}
584
585static inline void td_set_ioengine_flags(struct thread_data *td)
586{
587 td->flags |= (td->io_ops->flags << TD_ENG_FLAG_SHIFT);
588}
589
590static inline bool td_ioengine_flagged(struct thread_data *td,
591 enum fio_ioengine_flags flags)
592{
593 return ((td->flags >> TD_ENG_FLAG_SHIFT) & flags) != 0;
594}
595
596extern void td_set_runstate(struct thread_data *, int);
597extern int td_bump_runstate(struct thread_data *, int);
598extern void td_restore_runstate(struct thread_data *, int);
599extern const char *runstate_to_name(int runstate);
600
601/*
602 * Allow 60 seconds for a job to quit on its own, otherwise reap with
603 * a vengeance.
604 */
605#define FIO_REAP_TIMEOUT 300
606
607#define TERMINATE_ALL (-1U)
608extern void fio_terminate_threads(unsigned int);
609extern void fio_mark_td_terminate(struct thread_data *);
610
611/*
612 * Memory helpers
613 */
614extern int __must_check fio_pin_memory(struct thread_data *);
615extern void fio_unpin_memory(struct thread_data *);
616extern int __must_check allocate_io_mem(struct thread_data *);
617extern void free_io_mem(struct thread_data *);
618extern void free_threads_shm(void);
619
620#ifdef FIO_INTERNAL
621#define PTR_ALIGN(ptr, mask) \
622 (char *) (((uintptr_t) (ptr) + (mask)) & ~(mask))
623#endif
624
625/*
626 * Reset stats after ramp time completes
627 */
628extern void reset_all_stats(struct thread_data *);
629
630/*
631 * blktrace support
632 */
633#ifdef FIO_HAVE_BLKTRACE
634extern int is_blktrace(const char *, int *);
635extern int load_blktrace(struct thread_data *, const char *, int);
636#endif
637
638extern int io_queue_event(struct thread_data *td, struct io_u *io_u, int *ret,
639 enum fio_ddir ddir, uint64_t *bytes_issued, int from_verify,
640 struct timeval *comp_time);
641
642/*
643 * Latency target helpers
644 */
645extern void lat_target_check(struct thread_data *);
646extern void lat_target_init(struct thread_data *);
647extern void lat_target_reset(struct thread_data *);
648
649#define for_each_td(td, i) \
650 for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++)
651#define for_each_file(td, f, i) \
652 if ((td)->files_index) \
653 for ((i) = 0, (f) = (td)->files[0]; \
654 (i) < (td)->o.nr_files && ((f) = (td)->files[i]) != NULL; \
655 (i)++)
656
657#define fio_assert(td, cond) do { \
658 if (!(cond)) { \
659 int *__foo = NULL; \
660 fprintf(stderr, "file:%s:%d, assert %s failed\n", __FILE__, __LINE__, #cond); \
661 td_set_runstate((td), TD_EXITED); \
662 (td)->error = EFAULT; \
663 *__foo = 0; \
664 } \
665} while (0)
666
667static inline bool fio_fill_issue_time(struct thread_data *td)
668{
669 if (td->o.read_iolog_file ||
670 !td->o.disable_clat || !td->o.disable_slat || !td->o.disable_bw)
671 return true;
672
673 return false;
674}
675
676static inline bool __should_check_rate(struct thread_data *td,
677 enum fio_ddir ddir)
678{
679 struct thread_options *o = &td->o;
680
681 /*
682 * If some rate setting was given, we need to check it
683 */
684 if (o->rate[ddir] || o->ratemin[ddir] || o->rate_iops[ddir] ||
685 o->rate_iops_min[ddir])
686 return true;
687
688 return false;
689}
690
691static inline bool should_check_rate(struct thread_data *td)
692{
693 if (td->bytes_done[DDIR_READ] && __should_check_rate(td, DDIR_READ))
694 return true;
695 if (td->bytes_done[DDIR_WRITE] && __should_check_rate(td, DDIR_WRITE))
696 return true;
697 if (td->bytes_done[DDIR_TRIM] && __should_check_rate(td, DDIR_TRIM))
698 return true;
699
700 return false;
701}
702
703static inline unsigned int td_max_bs(struct thread_data *td)
704{
705 unsigned int max_bs;
706
707 max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]);
708 return max(td->o.max_bs[DDIR_TRIM], max_bs);
709}
710
711static inline unsigned int td_min_bs(struct thread_data *td)
712{
713 unsigned int min_bs;
714
715 min_bs = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
716 return min(td->o.min_bs[DDIR_TRIM], min_bs);
717}
718
719static inline bool td_async_processing(struct thread_data *td)
720{
721 return (td->flags & TD_F_NEED_LOCK) != 0;
722}
723
724/*
725 * We currently only need to do locking if we have verifier threads
726 * accessing our internal structures too
727 */
728static inline void td_io_u_lock(struct thread_data *td)
729{
730 if (td_async_processing(td))
731 pthread_mutex_lock(&td->io_u_lock);
732}
733
734static inline void td_io_u_unlock(struct thread_data *td)
735{
736 if (td_async_processing(td))
737 pthread_mutex_unlock(&td->io_u_lock);
738}
739
740static inline void td_io_u_free_notify(struct thread_data *td)
741{
742 if (td_async_processing(td))
743 pthread_cond_signal(&td->free_cond);
744}
745
746static inline void td_flags_clear(struct thread_data *td, unsigned int *flags,
747 unsigned int value)
748{
749 if (!td_async_processing(td))
750 *flags &= ~value;
751 else
752 __sync_fetch_and_and(flags, ~value);
753}
754
755static inline void td_flags_set(struct thread_data *td, unsigned int *flags,
756 unsigned int value)
757{
758 if (!td_async_processing(td))
759 *flags |= value;
760 else
761 __sync_fetch_and_or(flags, value);
762}
763
764extern const char *fio_get_arch_string(int);
765extern const char *fio_get_os_string(int);
766
767#ifdef FIO_INTERNAL
768#define ARRAY_SIZE(x) (sizeof((x)) / (sizeof((x)[0])))
769#define FIELD_SIZE(s, f) (sizeof(((typeof(s))0)->f))
770#endif
771
772enum {
773 __FIO_OUTPUT_TERSE = 0,
774 __FIO_OUTPUT_JSON = 1,
775 __FIO_OUTPUT_NORMAL = 2,
776 __FIO_OUTPUT_JSON_PLUS = 3,
777 FIO_OUTPUT_NR = 4,
778
779 FIO_OUTPUT_TERSE = 1U << __FIO_OUTPUT_TERSE,
780 FIO_OUTPUT_JSON = 1U << __FIO_OUTPUT_JSON,
781 FIO_OUTPUT_NORMAL = 1U << __FIO_OUTPUT_NORMAL,
782 FIO_OUTPUT_JSON_PLUS = 1U << __FIO_OUTPUT_JSON_PLUS,
783};
784
785enum {
786 FIO_RAND_DIST_RANDOM = 0,
787 FIO_RAND_DIST_ZIPF,
788 FIO_RAND_DIST_PARETO,
789 FIO_RAND_DIST_GAUSS,
790 FIO_RAND_DIST_ZONED,
791};
792
793#define FIO_DEF_ZIPF 1.1
794#define FIO_DEF_PARETO 0.2
795
796enum {
797 FIO_RAND_GEN_TAUSWORTHE = 0,
798 FIO_RAND_GEN_LFSR,
799 FIO_RAND_GEN_TAUSWORTHE64,
800};
801
802enum {
803 FIO_CPUS_SHARED = 0,
804 FIO_CPUS_SPLIT,
805};
806
807extern void exec_trigger(const char *);
808extern void check_trigger_file(void);
809
810#endif
fio - Flexible IO Tester