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Make lib/num2str.c a stand-alone library by adding lib/num2str.h
[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 "ioengines.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 "lib/num2str.h"
39#include "client.h"
40#include "server.h"
41#include "stat.h"
42#include "flow.h"
43#include "io_u.h"
44#include "io_u_queue.h"
45#include "workqueue.h"
46#include "steadystate.h"
47
48#ifdef CONFIG_SOLARISAIO
49#include <sys/asynch.h>
50#endif
51
52#ifdef CONFIG_LIBNUMA
53#include <linux/mempolicy.h>
54#include <numa.h>
55
56/*
57 * "local" is pseudo-policy
58 */
59#define MPOL_LOCAL MPOL_MAX
60#endif
61
62/*
63 * offset generator types
64 */
65enum {
66 RW_SEQ_SEQ = 0,
67 RW_SEQ_IDENT,
68};
69
70enum {
71 TD_F_VER_BACKLOG = 1U << 0,
72 TD_F_TRIM_BACKLOG = 1U << 1,
73 TD_F_READ_IOLOG = 1U << 2,
74 TD_F_REFILL_BUFFERS = 1U << 3,
75 TD_F_SCRAMBLE_BUFFERS = 1U << 4,
76 TD_F_VER_NONE = 1U << 5,
77 TD_F_PROFILE_OPS = 1U << 6,
78 TD_F_COMPRESS = 1U << 7,
79 TD_F_RESERVED = 1U << 8, /* not used */
80 TD_F_COMPRESS_LOG = 1U << 9,
81 TD_F_VSTATE_SAVED = 1U << 10,
82 TD_F_NEED_LOCK = 1U << 11,
83 TD_F_CHILD = 1U << 12,
84 TD_F_NO_PROGRESS = 1U << 13,
85 TD_F_REGROW_LOGS = 1U << 14,
86};
87
88enum {
89 FIO_RAND_BS_OFF = 0,
90 FIO_RAND_VER_OFF,
91 FIO_RAND_MIX_OFF,
92 FIO_RAND_FILE_OFF,
93 FIO_RAND_BLOCK_OFF,
94 FIO_RAND_FILE_SIZE_OFF,
95 FIO_RAND_TRIM_OFF,
96 FIO_RAND_BUF_OFF,
97 FIO_RAND_SEQ_RAND_READ_OFF,
98 FIO_RAND_SEQ_RAND_WRITE_OFF,
99 FIO_RAND_SEQ_RAND_TRIM_OFF,
100 FIO_RAND_START_DELAY,
101 FIO_DEDUPE_OFF,
102 FIO_RAND_POISSON_OFF,
103 FIO_RAND_ZONE_OFF,
104 FIO_RAND_POISSON2_OFF,
105 FIO_RAND_POISSON3_OFF,
106 FIO_RAND_NR_OFFS,
107};
108
109enum {
110 IO_MODE_INLINE = 0,
111 IO_MODE_OFFLOAD = 1,
112
113 RATE_PROCESS_LINEAR = 0,
114 RATE_PROCESS_POISSON = 1,
115};
116
117enum {
118 F_ADV_NONE = 0,
119 F_ADV_TYPE,
120 F_ADV_RANDOM,
121 F_ADV_SEQUENTIAL,
122};
123
124/*
125 * Per-thread/process specific data. Only used for the network client
126 * for now.
127 */
128void sk_out_assign(struct sk_out *);
129void sk_out_drop(void);
130
131struct zone_split_index {
132 uint8_t size_perc;
133 uint8_t size_perc_prev;
134};
135
136/*
137 * This describes a single thread/process executing a fio job.
138 */
139struct thread_data {
140 struct flist_head opt_list;
141 unsigned long flags;
142 struct thread_options o;
143 void *eo;
144 pthread_t thread;
145 unsigned int thread_number;
146 unsigned int subjob_number;
147 unsigned int groupid;
148 struct thread_stat ts;
149
150 int client_type;
151
152 struct io_log *slat_log;
153 struct io_log *clat_log;
154 struct io_log *clat_hist_log;
155 struct io_log *lat_log;
156 struct io_log *bw_log;
157 struct io_log *iops_log;
158
159 struct workqueue log_compress_wq;
160
161 struct thread_data *parent;
162
163 uint64_t stat_io_bytes[DDIR_RWDIR_CNT];
164 struct timeval bw_sample_time;
165
166 uint64_t stat_io_blocks[DDIR_RWDIR_CNT];
167 struct timeval iops_sample_time;
168
169 volatile int update_rusage;
170 struct fio_mutex *rusage_sem;
171 struct rusage ru_start;
172 struct rusage ru_end;
173
174 struct fio_file **files;
175 unsigned char *file_locks;
176 unsigned int files_size;
177 unsigned int files_index;
178 unsigned int nr_open_files;
179 unsigned int nr_done_files;
180 unsigned int nr_normal_files;
181 union {
182 unsigned int next_file;
183 struct frand_state next_file_state;
184 };
185 union {
186 struct zipf_state next_file_zipf;
187 struct gauss_state next_file_gauss;
188 };
189 union {
190 double zipf_theta;
191 double pareto_h;
192 double gauss_dev;
193 };
194 int error;
195 int sig;
196 int done;
197 int stop_io;
198 pid_t pid;
199 char *orig_buffer;
200 size_t orig_buffer_size;
201 volatile int terminate;
202 volatile int runstate;
203 unsigned int last_was_sync;
204 enum fio_ddir last_ddir;
205
206 int mmapfd;
207
208 void *iolog_buf;
209 FILE *iolog_f;
210
211 unsigned long rand_seeds[FIO_RAND_NR_OFFS];
212
213 struct frand_state bsrange_state;
214 struct frand_state verify_state;
215 struct frand_state trim_state;
216 struct frand_state delay_state;
217
218 struct frand_state buf_state;
219 struct frand_state buf_state_prev;
220 struct frand_state dedupe_state;
221 struct frand_state zone_state;
222
223 struct zone_split_index **zone_state_index;
224
225 unsigned int verify_batch;
226 unsigned int trim_batch;
227
228 struct thread_io_list *vstate;
229
230 int shm_id;
231
232 /*
233 * IO engine hooks, contains everything needed to submit an io_u
234 * to any of the available IO engines.
235 */
236 struct ioengine_ops *io_ops;
237 int io_ops_init;
238
239 /*
240 * IO engine private data and dlhandle.
241 */
242 void *io_ops_data;
243 void *io_ops_dlhandle;
244
245 /*
246 * Queue depth of io_u's that fio MIGHT do
247 */
248 unsigned int cur_depth;
249
250 /*
251 * io_u's about to be committed
252 */
253 unsigned int io_u_queued;
254
255 /*
256 * io_u's submitted but not completed yet
257 */
258 unsigned int io_u_in_flight;
259
260 /*
261 * List of free and busy io_u's
262 */
263 struct io_u_ring io_u_requeues;
264 struct io_u_queue io_u_freelist;
265 struct io_u_queue io_u_all;
266 pthread_mutex_t io_u_lock;
267 pthread_cond_t free_cond;
268
269 /*
270 * async verify offload
271 */
272 struct flist_head verify_list;
273 pthread_t *verify_threads;
274 unsigned int nr_verify_threads;
275 pthread_cond_t verify_cond;
276 int verify_thread_exit;
277
278 /*
279 * Rate state
280 */
281 uint64_t rate_bps[DDIR_RWDIR_CNT];
282 uint64_t rate_next_io_time[DDIR_RWDIR_CNT];
283 unsigned long rate_bytes[DDIR_RWDIR_CNT];
284 unsigned long rate_blocks[DDIR_RWDIR_CNT];
285 unsigned long long rate_io_issue_bytes[DDIR_RWDIR_CNT];
286 struct timeval lastrate[DDIR_RWDIR_CNT];
287 int64_t last_usec[DDIR_RWDIR_CNT];
288 struct frand_state poisson_state[DDIR_RWDIR_CNT];
289
290 /*
291 * Enforced rate submission/completion workqueue
292 */
293 struct workqueue io_wq;
294
295 uint64_t total_io_size;
296 uint64_t fill_device_size;
297
298 /*
299 * Issue side
300 */
301 uint64_t io_issues[DDIR_RWDIR_CNT];
302 uint64_t io_issue_bytes[DDIR_RWDIR_CNT];
303 uint64_t loops;
304
305 /*
306 * Completions
307 */
308 uint64_t io_blocks[DDIR_RWDIR_CNT];
309 uint64_t this_io_blocks[DDIR_RWDIR_CNT];
310 uint64_t io_bytes[DDIR_RWDIR_CNT];
311 uint64_t this_io_bytes[DDIR_RWDIR_CNT];
312 uint64_t io_skip_bytes;
313 uint64_t zone_bytes;
314 struct fio_mutex *mutex;
315 uint64_t bytes_done[DDIR_RWDIR_CNT];
316
317 /*
318 * State for random io, a bitmap of blocks done vs not done
319 */
320 struct frand_state random_state;
321
322 struct timeval start; /* start of this loop */
323 struct timeval epoch; /* time job was started */
324 unsigned long long unix_epoch; /* Time job was started, unix epoch based. */
325 struct timeval last_issue;
326 long time_offset;
327 struct timeval tv_cache;
328 struct timeval terminate_time;
329 unsigned int tv_cache_nr;
330 unsigned int tv_cache_mask;
331 unsigned int ramp_time_over;
332
333 /*
334 * Time since last latency_window was started
335 */
336 struct timeval latency_ts;
337 unsigned int latency_qd;
338 unsigned int latency_qd_high;
339 unsigned int latency_qd_low;
340 unsigned int latency_failed;
341 uint64_t latency_ios;
342 int latency_end_run;
343
344 /*
345 * read/write mixed workload state
346 */
347 struct frand_state rwmix_state;
348 unsigned long rwmix_issues;
349 enum fio_ddir rwmix_ddir;
350 unsigned int ddir_seq_nr;
351
352 /*
353 * rand/seq mixed workload state
354 */
355 struct frand_state seq_rand_state[DDIR_RWDIR_CNT];
356
357 /*
358 * IO history logs for verification. We use a tree for sorting,
359 * if we are overwriting. Otherwise just use a fifo.
360 */
361 struct rb_root io_hist_tree;
362 struct flist_head io_hist_list;
363 unsigned long io_hist_len;
364
365 /*
366 * For IO replaying
367 */
368 struct flist_head io_log_list;
369
370 /*
371 * For tracking/handling discards
372 */
373 struct flist_head trim_list;
374 unsigned long trim_entries;
375
376 struct flist_head next_rand_list;
377
378 /*
379 * for fileservice, how often to switch to a new file
380 */
381 unsigned int file_service_nr;
382 unsigned int file_service_left;
383 struct fio_file *file_service_file;
384
385 unsigned int sync_file_range_nr;
386
387 /*
388 * For generating file sizes
389 */
390 struct frand_state file_size_state;
391
392 /*
393 * Error counts
394 */
395 unsigned int total_err_count;
396 int first_error;
397
398 struct fio_flow *flow;
399
400 /*
401 * Can be overloaded by profiles
402 */
403 struct prof_io_ops prof_io_ops;
404 void *prof_data;
405
406 void *pinned_mem;
407
408 struct steadystate_data ss;
409
410 char verror[FIO_VERROR_SIZE];
411};
412
413/*
414 * when should interactive ETA output be generated
415 */
416enum {
417 FIO_ETA_AUTO,
418 FIO_ETA_ALWAYS,
419 FIO_ETA_NEVER,
420};
421
422#define __td_verror(td, err, msg, func) \
423 do { \
424 unsigned int ____e = (err); \
425 if ((td)->error) \
426 break; \
427 (td)->error = ____e; \
428 if (!(td)->first_error) \
429 snprintf(td->verror, sizeof(td->verror), "file:%s:%d, func=%s, error=%s", __FILE__, __LINE__, (func), (msg)); \
430 } while (0)
431
432
433#define td_clear_error(td) do { \
434 (td)->error = 0; \
435 if ((td)->parent) \
436 (td)->parent->error = 0; \
437} while (0)
438
439#define td_verror(td, err, func) do { \
440 __td_verror((td), (err), strerror((err)), (func)); \
441 if ((td)->parent) \
442 __td_verror((td)->parent, (err), strerror((err)), (func)); \
443} while (0)
444
445#define td_vmsg(td, err, msg, func) do { \
446 __td_verror((td), (err), (msg), (func)); \
447 if ((td)->parent) \
448 __td_verror((td)->parent, (err), (msg), (func)); \
449} while (0)
450
451#define __fio_stringify_1(x) #x
452#define __fio_stringify(x) __fio_stringify_1(x)
453
454extern int exitall_on_terminate;
455extern unsigned int thread_number;
456extern unsigned int stat_number;
457extern int shm_id;
458extern int groupid;
459extern int output_format;
460extern int append_terse_output;
461extern int temp_stall_ts;
462extern uintptr_t page_mask, page_size;
463extern int read_only;
464extern int eta_print;
465extern int eta_new_line;
466extern unsigned long done_secs;
467extern int fio_gtod_offload;
468extern int fio_gtod_cpu;
469extern enum fio_cs fio_clock_source;
470extern int fio_clock_source_set;
471extern int warnings_fatal;
472extern int terse_version;
473extern int is_backend;
474extern int nr_clients;
475extern int log_syslog;
476extern int status_interval;
477extern const char fio_version_string[];
478extern char *trigger_file;
479extern char *trigger_cmd;
480extern char *trigger_remote_cmd;
481extern long long trigger_timeout;
482extern char *aux_path;
483
484extern struct thread_data *threads;
485
486static inline void fio_ro_check(const struct thread_data *td, struct io_u *io_u)
487{
488 assert(!(io_u->ddir == DDIR_WRITE && !td_write(td)));
489}
490
491#define REAL_MAX_JOBS 4096
492
493static inline int should_fsync(struct thread_data *td)
494{
495 if (td->last_was_sync)
496 return 0;
497 if (td_write(td) || td->o.override_sync)
498 return 1;
499
500 return 0;
501}
502
503/*
504 * Init/option functions
505 */
506extern int __must_check fio_init_options(void);
507extern int __must_check parse_options(int, char **);
508extern int parse_jobs_ini(char *, int, int, int);
509extern int parse_cmd_line(int, char **, int);
510extern int fio_backend(struct sk_out *);
511extern void reset_fio_state(void);
512extern void clear_io_state(struct thread_data *, int);
513extern int fio_options_parse(struct thread_data *, char **, int);
514extern void fio_keywords_init(void);
515extern void fio_keywords_exit(void);
516extern int fio_cmd_option_parse(struct thread_data *, const char *, char *);
517extern int fio_cmd_ioengine_option_parse(struct thread_data *, const char *, char *);
518extern void fio_fill_default_options(struct thread_data *);
519extern int fio_show_option_help(const char *);
520extern void fio_options_set_ioengine_opts(struct option *long_options, struct thread_data *td);
521extern void fio_options_dup_and_init(struct option *);
522extern void fio_options_mem_dupe(struct thread_data *);
523extern void td_fill_rand_seeds(struct thread_data *);
524extern void td_fill_verify_state_seed(struct thread_data *);
525extern void add_job_opts(const char **, 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 FIO_GETOPT_JOB 0x89000000
539#define FIO_GETOPT_IOENGINE 0x98000000
540#define FIO_NR_OPTIONS (FIO_MAX_OPTS + 128)
541
542/*
543 * ETA/status stuff
544 */
545extern void print_thread_status(void);
546extern void print_status_init(int);
547extern char *fio_uint_to_kmg(unsigned int val);
548
549/*
550 * Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
551 * will never back again. It may cycle between running/verififying/fsyncing.
552 * Once the thread reaches TD_EXITED, it is just waiting for the core to
553 * reap it.
554 */
555enum {
556 TD_NOT_CREATED = 0,
557 TD_CREATED,
558 TD_INITIALIZED,
559 TD_RAMP,
560 TD_SETTING_UP,
561 TD_RUNNING,
562 TD_PRE_READING,
563 TD_VERIFYING,
564 TD_FSYNCING,
565 TD_FINISHING,
566 TD_EXITED,
567 TD_REAPED,
568 TD_LAST,
569 TD_NR,
570};
571
572#define TD_ENG_FLAG_SHIFT 16
573#define TD_ENG_FLAG_MASK ((1U << 16) - 1)
574
575static inline enum fio_ioengine_flags td_ioengine_flags(struct thread_data *td)
576{
577 return (enum fio_ioengine_flags)
578 ((td->flags >> TD_ENG_FLAG_SHIFT) & TD_ENG_FLAG_MASK);
579}
580
581static inline void td_set_ioengine_flags(struct thread_data *td)
582{
583 td->flags |= (td->io_ops->flags << TD_ENG_FLAG_SHIFT);
584}
585
586static inline bool td_ioengine_flagged(struct thread_data *td,
587 enum fio_ioengine_flags flags)
588{
589 return ((td->flags >> TD_ENG_FLAG_SHIFT) & flags) != 0;
590}
591
592extern void td_set_runstate(struct thread_data *, int);
593extern int td_bump_runstate(struct thread_data *, int);
594extern void td_restore_runstate(struct thread_data *, int);
595extern const char *runstate_to_name(int runstate);
596
597/*
598 * Allow 60 seconds for a job to quit on its own, otherwise reap with
599 * a vengeance.
600 */
601#define FIO_REAP_TIMEOUT 300
602
603#define TERMINATE_ALL (-1U)
604extern void fio_terminate_threads(unsigned int);
605extern void fio_mark_td_terminate(struct thread_data *);
606
607/*
608 * Memory helpers
609 */
610extern int __must_check fio_pin_memory(struct thread_data *);
611extern void fio_unpin_memory(struct thread_data *);
612extern int __must_check allocate_io_mem(struct thread_data *);
613extern void free_io_mem(struct thread_data *);
614extern void free_threads_shm(void);
615
616#ifdef FIO_INTERNAL
617#define PTR_ALIGN(ptr, mask) \
618 (char *) (((uintptr_t) (ptr) + (mask)) & ~(mask))
619#endif
620
621/*
622 * Reset stats after ramp time completes
623 */
624extern void reset_all_stats(struct thread_data *);
625
626/*
627 * blktrace support
628 */
629#ifdef FIO_HAVE_BLKTRACE
630extern int is_blktrace(const char *, int *);
631extern int load_blktrace(struct thread_data *, const char *, int);
632#endif
633
634extern int io_queue_event(struct thread_data *td, struct io_u *io_u, int *ret,
635 enum fio_ddir ddir, uint64_t *bytes_issued, int from_verify,
636 struct timeval *comp_time);
637
638/*
639 * Latency target helpers
640 */
641extern void lat_target_check(struct thread_data *);
642extern void lat_target_init(struct thread_data *);
643extern void lat_target_reset(struct thread_data *);
644
645/*
646 * Iterates all threads/processes within all the defined jobs
647 */
648#define for_each_td(td, i) \
649 for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++)
650#define for_each_file(td, f, i) \
651 if ((td)->files_index) \
652 for ((i) = 0, (f) = (td)->files[0]; \
653 (i) < (td)->o.nr_files && ((f) = (td)->files[i]) != NULL; \
654 (i)++)
655
656#define fio_assert(td, cond) do { \
657 if (!(cond)) { \
658 int *__foo = NULL; \
659 fprintf(stderr, "file:%s:%d, assert %s failed\n", __FILE__, __LINE__, #cond); \
660 td_set_runstate((td), TD_EXITED); \
661 (td)->error = EFAULT; \
662 *__foo = 0; \
663 } \
664} while (0)
665
666static inline bool fio_fill_issue_time(struct thread_data *td)
667{
668 if (td->o.read_iolog_file ||
669 !td->o.disable_clat || !td->o.disable_slat || !td->o.disable_bw)
670 return true;
671
672 return false;
673}
674
675static inline bool __should_check_rate(struct thread_data *td,
676 enum fio_ddir ddir)
677{
678 struct thread_options *o = &td->o;
679
680 /*
681 * If some rate setting was given, we need to check it
682 */
683 if (o->rate[ddir] || o->ratemin[ddir] || o->rate_iops[ddir] ||
684 o->rate_iops_min[ddir])
685 return true;
686
687 return false;
688}
689
690static inline bool should_check_rate(struct thread_data *td)
691{
692 if (td->bytes_done[DDIR_READ] && __should_check_rate(td, DDIR_READ))
693 return true;
694 if (td->bytes_done[DDIR_WRITE] && __should_check_rate(td, DDIR_WRITE))
695 return true;
696 if (td->bytes_done[DDIR_TRIM] && __should_check_rate(td, DDIR_TRIM))
697 return true;
698
699 return false;
700}
701
702static inline unsigned int td_max_bs(struct thread_data *td)
703{
704 unsigned int max_bs;
705
706 max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]);
707 return max(td->o.max_bs[DDIR_TRIM], max_bs);
708}
709
710static inline unsigned int td_min_bs(struct thread_data *td)
711{
712 unsigned int min_bs;
713
714 min_bs = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
715 return min(td->o.min_bs[DDIR_TRIM], min_bs);
716}
717
718static inline bool td_async_processing(struct thread_data *td)
719{
720 return (td->flags & TD_F_NEED_LOCK) != 0;
721}
722
723/*
724 * We currently only need to do locking if we have verifier threads
725 * accessing our internal structures too
726 */
727static inline void td_io_u_lock(struct thread_data *td)
728{
729 if (td_async_processing(td))
730 pthread_mutex_lock(&td->io_u_lock);
731}
732
733static inline void td_io_u_unlock(struct thread_data *td)
734{
735 if (td_async_processing(td))
736 pthread_mutex_unlock(&td->io_u_lock);
737}
738
739static inline void td_io_u_free_notify(struct thread_data *td)
740{
741 if (td_async_processing(td))
742 pthread_cond_signal(&td->free_cond);
743}
744
745static inline void td_flags_clear(struct thread_data *td, unsigned int *flags,
746 unsigned int value)
747{
748 if (!td_async_processing(td))
749 *flags &= ~value;
750 else
751 __sync_fetch_and_and(flags, ~value);
752}
753
754static inline void td_flags_set(struct thread_data *td, unsigned int *flags,
755 unsigned int value)
756{
757 if (!td_async_processing(td))
758 *flags |= value;
759 else
760 __sync_fetch_and_or(flags, value);
761}
762
763extern const char *fio_get_arch_string(int);
764extern const char *fio_get_os_string(int);
765
766#ifdef FIO_INTERNAL
767#define ARRAY_SIZE(x) (sizeof((x)) / (sizeof((x)[0])))
768#define FIELD_SIZE(s, f) (sizeof(((typeof(s))0)->f))
769#endif
770
771enum {
772 __FIO_OUTPUT_TERSE = 0,
773 __FIO_OUTPUT_JSON = 1,
774 __FIO_OUTPUT_NORMAL = 2,
775 __FIO_OUTPUT_JSON_PLUS = 3,
776 FIO_OUTPUT_NR = 4,
777
778 FIO_OUTPUT_TERSE = 1U << __FIO_OUTPUT_TERSE,
779 FIO_OUTPUT_JSON = 1U << __FIO_OUTPUT_JSON,
780 FIO_OUTPUT_NORMAL = 1U << __FIO_OUTPUT_NORMAL,
781 FIO_OUTPUT_JSON_PLUS = 1U << __FIO_OUTPUT_JSON_PLUS,
782};
783
784enum {
785 FIO_RAND_DIST_RANDOM = 0,
786 FIO_RAND_DIST_ZIPF,
787 FIO_RAND_DIST_PARETO,
788 FIO_RAND_DIST_GAUSS,
789 FIO_RAND_DIST_ZONED,
790};
791
792#define FIO_DEF_ZIPF 1.1
793#define FIO_DEF_PARETO 0.2
794
795enum {
796 FIO_RAND_GEN_TAUSWORTHE = 0,
797 FIO_RAND_GEN_LFSR,
798 FIO_RAND_GEN_TAUSWORTHE64,
799};
800
801enum {
802 FIO_CPUS_SHARED = 0,
803 FIO_CPUS_SPLIT,
804};
805
806extern void exec_trigger(const char *);
807extern void check_trigger_file(void);
808
809#endif
fio - Flexible IO Tester