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Make lib/memalign.c a stand-alone library
[fio.git] / fio.h
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CommitLineData
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 "client.h"
39#include "server.h"
40#include "stat.h"
41#include "flow.h"
42#include "io_u.h"
43#include "io_u_queue.h"
44#include "workqueue.h"
45#include "steadystate.h"
46
47#ifdef CONFIG_SOLARISAIO
48#include <sys/asynch.h>
49#endif
50
51#ifdef CONFIG_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 * offset generator types
63 */
64enum {
65 RW_SEQ_SEQ = 0,
66 RW_SEQ_IDENT,
67};
68
69enum {
70 TD_F_VER_BACKLOG = 1U << 0,
71 TD_F_TRIM_BACKLOG = 1U << 1,
72 TD_F_READ_IOLOG = 1U << 2,
73 TD_F_REFILL_BUFFERS = 1U << 3,
74 TD_F_SCRAMBLE_BUFFERS = 1U << 4,
75 TD_F_VER_NONE = 1U << 5,
76 TD_F_PROFILE_OPS = 1U << 6,
77 TD_F_COMPRESS = 1U << 7,
78 TD_F_RESERVED = 1U << 8, /* not used */
79 TD_F_COMPRESS_LOG = 1U << 9,
80 TD_F_VSTATE_SAVED = 1U << 10,
81 TD_F_NEED_LOCK = 1U << 11,
82 TD_F_CHILD = 1U << 12,
83 TD_F_NO_PROGRESS = 1U << 13,
84 TD_F_REGROW_LOGS = 1U << 14,
85};
86
87enum {
88 FIO_RAND_BS_OFF = 0,
89 FIO_RAND_VER_OFF,
90 FIO_RAND_MIX_OFF,
91 FIO_RAND_FILE_OFF,
92 FIO_RAND_BLOCK_OFF,
93 FIO_RAND_FILE_SIZE_OFF,
94 FIO_RAND_TRIM_OFF,
95 FIO_RAND_BUF_OFF,
96 FIO_RAND_SEQ_RAND_READ_OFF,
97 FIO_RAND_SEQ_RAND_WRITE_OFF,
98 FIO_RAND_SEQ_RAND_TRIM_OFF,
99 FIO_RAND_START_DELAY,
100 FIO_DEDUPE_OFF,
101 FIO_RAND_POISSON_OFF,
102 FIO_RAND_ZONE_OFF,
103 FIO_RAND_POISSON2_OFF,
104 FIO_RAND_POISSON3_OFF,
105 FIO_RAND_NR_OFFS,
106};
107
108enum {
109 IO_MODE_INLINE = 0,
110 IO_MODE_OFFLOAD = 1,
111
112 RATE_PROCESS_LINEAR = 0,
113 RATE_PROCESS_POISSON = 1,
114};
115
116enum {
117 F_ADV_NONE = 0,
118 F_ADV_TYPE,
119 F_ADV_RANDOM,
120 F_ADV_SEQUENTIAL,
121};
122
123/*
124 * Per-thread/process specific data. Only used for the network client
125 * for now.
126 */
127void sk_out_assign(struct sk_out *);
128void sk_out_drop(void);
129
130struct zone_split_index {
131 uint8_t size_perc;
132 uint8_t size_perc_prev;
133};
134
135/*
136 * This describes a single thread/process executing a fio job.
137 */
138struct thread_data {
139 struct flist_head opt_list;
140 unsigned long flags;
141 struct thread_options o;
142 void *eo;
143 pthread_t thread;
144 unsigned int thread_number;
145 unsigned int subjob_number;
146 unsigned int groupid;
147 struct thread_stat ts;
148
149 int client_type;
150
151 struct io_log *slat_log;
152 struct io_log *clat_log;
153 struct io_log *clat_hist_log;
154 struct io_log *lat_log;
155 struct io_log *bw_log;
156 struct io_log *iops_log;
157
158 struct workqueue log_compress_wq;
159
160 struct thread_data *parent;
161
162 uint64_t stat_io_bytes[DDIR_RWDIR_CNT];
163 struct timeval bw_sample_time;
164
165 uint64_t stat_io_blocks[DDIR_RWDIR_CNT];
166 struct timeval iops_sample_time;
167
168 volatile int update_rusage;
169 struct fio_mutex *rusage_sem;
170 struct rusage ru_start;
171 struct rusage ru_end;
172
173 struct fio_file **files;
174 unsigned char *file_locks;
175 unsigned int files_size;
176 unsigned int files_index;
177 unsigned int nr_open_files;
178 unsigned int nr_done_files;
179 unsigned int nr_normal_files;
180 union {
181 unsigned int next_file;
182 struct frand_state next_file_state;
183 };
184 union {
185 struct zipf_state next_file_zipf;
186 struct gauss_state next_file_gauss;
187 };
188 union {
189 double zipf_theta;
190 double pareto_h;
191 double gauss_dev;
192 };
193 int error;
194 int sig;
195 int done;
196 int stop_io;
197 pid_t pid;
198 char *orig_buffer;
199 size_t orig_buffer_size;
200 volatile int terminate;
201 volatile int runstate;
202 unsigned int last_was_sync;
203 enum fio_ddir last_ddir;
204
205 int mmapfd;
206
207 void *iolog_buf;
208 FILE *iolog_f;
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 int io_ops_init;
237
238 /*
239 * IO engine private data and dlhandle.
240 */
241 void *io_ops_data;
242 void *io_ops_dlhandle;
243
244 /*
245 * Queue depth of io_u's that fio MIGHT do
246 */
247 unsigned int cur_depth;
248
249 /*
250 * io_u's about to be committed
251 */
252 unsigned int io_u_queued;
253
254 /*
255 * io_u's submitted but not completed yet
256 */
257 unsigned int io_u_in_flight;
258
259 /*
260 * List of free and busy io_u's
261 */
262 struct io_u_ring io_u_requeues;
263 struct io_u_queue io_u_freelist;
264 struct io_u_queue io_u_all;
265 pthread_mutex_t io_u_lock;
266 pthread_cond_t free_cond;
267
268 /*
269 * async verify offload
270 */
271 struct flist_head verify_list;
272 pthread_t *verify_threads;
273 unsigned int nr_verify_threads;
274 pthread_cond_t verify_cond;
275 int verify_thread_exit;
276
277 /*
278 * Rate state
279 */
280 uint64_t rate_bps[DDIR_RWDIR_CNT];
281 uint64_t rate_next_io_time[DDIR_RWDIR_CNT];
282 unsigned long rate_bytes[DDIR_RWDIR_CNT];
283 unsigned long rate_blocks[DDIR_RWDIR_CNT];
284 unsigned long long rate_io_issue_bytes[DDIR_RWDIR_CNT];
285 struct timeval lastrate[DDIR_RWDIR_CNT];
286 int64_t last_usec[DDIR_RWDIR_CNT];
287 struct frand_state poisson_state[DDIR_RWDIR_CNT];
288
289 /*
290 * Enforced rate submission/completion workqueue
291 */
292 struct workqueue io_wq;
293
294 uint64_t total_io_size;
295 uint64_t fill_device_size;
296
297 /*
298 * Issue side
299 */
300 uint64_t io_issues[DDIR_RWDIR_CNT];
301 uint64_t io_issue_bytes[DDIR_RWDIR_CNT];
302 uint64_t loops;
303
304 /*
305 * Completions
306 */
307 uint64_t io_blocks[DDIR_RWDIR_CNT];
308 uint64_t this_io_blocks[DDIR_RWDIR_CNT];
309 uint64_t io_bytes[DDIR_RWDIR_CNT];
310 uint64_t this_io_bytes[DDIR_RWDIR_CNT];
311 uint64_t io_skip_bytes;
312 uint64_t zone_bytes;
313 struct fio_mutex *mutex;
314 uint64_t bytes_done[DDIR_RWDIR_CNT];
315
316 /*
317 * State for random io, a bitmap of blocks done vs not done
318 */
319 struct frand_state random_state;
320
321 struct timeval start; /* start of this loop */
322 struct timeval epoch; /* time job was started */
323 unsigned long long unix_epoch; /* Time job was started, unix epoch based. */
324 struct timeval last_issue;
325 long time_offset;
326 struct timeval tv_cache;
327 struct timeval terminate_time;
328 unsigned int tv_cache_nr;
329 unsigned int tv_cache_mask;
330 unsigned int ramp_time_over;
331
332 /*
333 * Time since last latency_window was started
334 */
335 struct timeval latency_ts;
336 unsigned int latency_qd;
337 unsigned int latency_qd_high;
338 unsigned int latency_qd_low;
339 unsigned int latency_failed;
340 uint64_t latency_ios;
341 int latency_end_run;
342
343 /*
344 * read/write mixed workload state
345 */
346 struct frand_state rwmix_state;
347 unsigned long rwmix_issues;
348 enum fio_ddir rwmix_ddir;
349 unsigned int ddir_seq_nr;
350
351 /*
352 * rand/seq mixed workload state
353 */
354 struct frand_state seq_rand_state[DDIR_RWDIR_CNT];
355
356 /*
357 * IO history logs for verification. We use a tree for sorting,
358 * if we are overwriting. Otherwise just use a fifo.
359 */
360 struct rb_root io_hist_tree;
361 struct flist_head io_hist_list;
362 unsigned long io_hist_len;
363
364 /*
365 * For IO replaying
366 */
367 struct flist_head io_log_list;
368
369 /*
370 * For tracking/handling discards
371 */
372 struct flist_head trim_list;
373 unsigned long trim_entries;
374
375 struct flist_head next_rand_list;
376
377 /*
378 * for fileservice, how often to switch to a new file
379 */
380 unsigned int file_service_nr;
381 unsigned int file_service_left;
382 struct fio_file *file_service_file;
383
384 unsigned int sync_file_range_nr;
385
386 /*
387 * For generating file sizes
388 */
389 struct frand_state file_size_state;
390
391 /*
392 * Error counts
393 */
394 unsigned int total_err_count;
395 int first_error;
396
397 struct fio_flow *flow;
398
399 /*
400 * Can be overloaded by profiles
401 */
402 struct prof_io_ops prof_io_ops;
403 void *prof_data;
404
405 void *pinned_mem;
406
407 struct steadystate_data ss;
408
409 char verror[FIO_VERROR_SIZE];
410};
411
412/*
413 * when should interactive ETA output be generated
414 */
415enum {
416 FIO_ETA_AUTO,
417 FIO_ETA_ALWAYS,
418 FIO_ETA_NEVER,
419};
420
421#define __td_verror(td, err, msg, func) \
422 do { \
423 unsigned int ____e = (err); \
424 if ((td)->error) \
425 break; \
426 (td)->error = ____e; \
427 if (!(td)->first_error) \
428 snprintf(td->verror, sizeof(td->verror), "file:%s:%d, func=%s, error=%s", __FILE__, __LINE__, (func), (msg)); \
429 } while (0)
430
431
432#define td_clear_error(td) do { \
433 (td)->error = 0; \
434 if ((td)->parent) \
435 (td)->parent->error = 0; \
436} while (0)
437
438#define td_verror(td, err, func) do { \
439 __td_verror((td), (err), strerror((err)), (func)); \
440 if ((td)->parent) \
441 __td_verror((td)->parent, (err), strerror((err)), (func)); \
442} while (0)
443
444#define td_vmsg(td, err, msg, func) do { \
445 __td_verror((td), (err), (msg), (func)); \
446 if ((td)->parent) \
447 __td_verror((td)->parent, (err), (msg), (func)); \
448} while (0)
449
450#define __fio_stringify_1(x) #x
451#define __fio_stringify(x) __fio_stringify_1(x)
452
453extern int exitall_on_terminate;
454extern unsigned int thread_number;
455extern unsigned int stat_number;
456extern int shm_id;
457extern int groupid;
458extern int output_format;
459extern int append_terse_output;
460extern int temp_stall_ts;
461extern uintptr_t page_mask, page_size;
462extern int read_only;
463extern int eta_print;
464extern int eta_new_line;
465extern unsigned long done_secs;
466extern int fio_gtod_offload;
467extern int fio_gtod_cpu;
468extern enum fio_cs fio_clock_source;
469extern int fio_clock_source_set;
470extern int warnings_fatal;
471extern int terse_version;
472extern int is_backend;
473extern int nr_clients;
474extern int log_syslog;
475extern int status_interval;
476extern const char fio_version_string[];
477extern char *trigger_file;
478extern char *trigger_cmd;
479extern char *trigger_remote_cmd;
480extern long long trigger_timeout;
481extern char *aux_path;
482
483extern struct thread_data *threads;
484
485static inline void fio_ro_check(const struct thread_data *td, struct io_u *io_u)
486{
487 assert(!(io_u->ddir == DDIR_WRITE && !td_write(td)));
488}
489
490#define REAL_MAX_JOBS 4096
491
492static inline int should_fsync(struct thread_data *td)
493{
494 if (td->last_was_sync)
495 return 0;
496 if (td_write(td) || td->o.override_sync)
497 return 1;
498
499 return 0;
500}
501
502/*
503 * Init/option functions
504 */
505extern int __must_check fio_init_options(void);
506extern int __must_check parse_options(int, char **);
507extern int parse_jobs_ini(char *, int, int, int);
508extern int parse_cmd_line(int, char **, int);
509extern int fio_backend(struct sk_out *);
510extern void reset_fio_state(void);
511extern void clear_io_state(struct thread_data *, int);
512extern int fio_options_parse(struct thread_data *, char **, int);
513extern void fio_keywords_init(void);
514extern void fio_keywords_exit(void);
515extern int fio_cmd_option_parse(struct thread_data *, const char *, char *);
516extern int fio_cmd_ioengine_option_parse(struct thread_data *, const char *, char *);
517extern void fio_fill_default_options(struct thread_data *);
518extern int fio_show_option_help(const char *);
519extern void fio_options_set_ioengine_opts(struct option *long_options, struct thread_data *td);
520extern void fio_options_dup_and_init(struct option *);
521extern void fio_options_mem_dupe(struct thread_data *);
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#ifdef FIO_INTERNAL
624#define PTR_ALIGN(ptr, mask) \
625 (char *) (((uintptr_t) (ptr) + (mask)) & ~(mask))
626#endif
627
628/*
629 * Reset stats after ramp time completes
630 */
631extern void reset_all_stats(struct thread_data *);
632
633/*
634 * blktrace support
635 */
636#ifdef FIO_HAVE_BLKTRACE
637extern int is_blktrace(const char *, int *);
638extern int load_blktrace(struct thread_data *, const char *, int);
639#endif
640
641extern int io_queue_event(struct thread_data *td, struct io_u *io_u, int *ret,
642 enum fio_ddir ddir, uint64_t *bytes_issued, int from_verify,
643 struct timeval *comp_time);
644
645/*
646 * Latency target helpers
647 */
648extern void lat_target_check(struct thread_data *);
649extern void lat_target_init(struct thread_data *);
650extern void lat_target_reset(struct thread_data *);
651
652/*
653 * Iterates all threads/processes within all the defined jobs
654 */
655#define for_each_td(td, i) \
656 for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++)
657#define for_each_file(td, f, i) \
658 if ((td)->files_index) \
659 for ((i) = 0, (f) = (td)->files[0]; \
660 (i) < (td)->o.nr_files && ((f) = (td)->files[i]) != NULL; \
661 (i)++)
662
663#define fio_assert(td, cond) do { \
664 if (!(cond)) { \
665 int *__foo = NULL; \
666 fprintf(stderr, "file:%s:%d, assert %s failed\n", __FILE__, __LINE__, #cond); \
667 td_set_runstate((td), TD_EXITED); \
668 (td)->error = EFAULT; \
669 *__foo = 0; \
670 } \
671} while (0)
672
673static inline bool fio_fill_issue_time(struct thread_data *td)
674{
675 if (td->o.read_iolog_file ||
676 !td->o.disable_clat || !td->o.disable_slat || !td->o.disable_bw)
677 return true;
678
679 return false;
680}
681
682static inline bool __should_check_rate(struct thread_data *td,
683 enum fio_ddir ddir)
684{
685 struct thread_options *o = &td->o;
686
687 /*
688 * If some rate setting was given, we need to check it
689 */
690 if (o->rate[ddir] || o->ratemin[ddir] || o->rate_iops[ddir] ||
691 o->rate_iops_min[ddir])
692 return true;
693
694 return false;
695}
696
697static inline bool should_check_rate(struct thread_data *td)
698{
699 if (td->bytes_done[DDIR_READ] && __should_check_rate(td, DDIR_READ))
700 return true;
701 if (td->bytes_done[DDIR_WRITE] && __should_check_rate(td, DDIR_WRITE))
702 return true;
703 if (td->bytes_done[DDIR_TRIM] && __should_check_rate(td, DDIR_TRIM))
704 return true;
705
706 return false;
707}
708
709static inline unsigned int td_max_bs(struct thread_data *td)
710{
711 unsigned int max_bs;
712
713 max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]);
714 return max(td->o.max_bs[DDIR_TRIM], max_bs);
715}
716
717static inline unsigned int td_min_bs(struct thread_data *td)
718{
719 unsigned int min_bs;
720
721 min_bs = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
722 return min(td->o.min_bs[DDIR_TRIM], min_bs);
723}
724
725static inline bool td_async_processing(struct thread_data *td)
726{
727 return (td->flags & TD_F_NEED_LOCK) != 0;
728}
729
730/*
731 * We currently only need to do locking if we have verifier threads
732 * accessing our internal structures too
733 */
734static inline void td_io_u_lock(struct thread_data *td)
735{
736 if (td_async_processing(td))
737 pthread_mutex_lock(&td->io_u_lock);
738}
739
740static inline void td_io_u_unlock(struct thread_data *td)
741{
742 if (td_async_processing(td))
743 pthread_mutex_unlock(&td->io_u_lock);
744}
745
746static inline void td_io_u_free_notify(struct thread_data *td)
747{
748 if (td_async_processing(td))
749 pthread_cond_signal(&td->free_cond);
750}
751
752static inline void td_flags_clear(struct thread_data *td, unsigned int *flags,
753 unsigned int value)
754{
755 if (!td_async_processing(td))
756 *flags &= ~value;
757 else
758 __sync_fetch_and_and(flags, ~value);
759}
760
761static inline void td_flags_set(struct thread_data *td, unsigned int *flags,
762 unsigned int value)
763{
764 if (!td_async_processing(td))
765 *flags |= value;
766 else
767 __sync_fetch_and_or(flags, value);
768}
769
770extern const char *fio_get_arch_string(int);
771extern const char *fio_get_os_string(int);
772
773#ifdef FIO_INTERNAL
774#define ARRAY_SIZE(x) (sizeof((x)) / (sizeof((x)[0])))
775#define FIELD_SIZE(s, f) (sizeof(((typeof(s))0)->f))
776#endif
777
778enum {
779 __FIO_OUTPUT_TERSE = 0,
780 __FIO_OUTPUT_JSON = 1,
781 __FIO_OUTPUT_NORMAL = 2,
782 __FIO_OUTPUT_JSON_PLUS = 3,
783 FIO_OUTPUT_NR = 4,
784
785 FIO_OUTPUT_TERSE = 1U << __FIO_OUTPUT_TERSE,
786 FIO_OUTPUT_JSON = 1U << __FIO_OUTPUT_JSON,
787 FIO_OUTPUT_NORMAL = 1U << __FIO_OUTPUT_NORMAL,
788 FIO_OUTPUT_JSON_PLUS = 1U << __FIO_OUTPUT_JSON_PLUS,
789};
790
791enum {
792 FIO_RAND_DIST_RANDOM = 0,
793 FIO_RAND_DIST_ZIPF,
794 FIO_RAND_DIST_PARETO,
795 FIO_RAND_DIST_GAUSS,
796 FIO_RAND_DIST_ZONED,
797};
798
799#define FIO_DEF_ZIPF 1.1
800#define FIO_DEF_PARETO 0.2
801
802enum {
803 FIO_RAND_GEN_TAUSWORTHE = 0,
804 FIO_RAND_GEN_LFSR,
805 FIO_RAND_GEN_TAUSWORTHE64,
806};
807
808enum {
809 FIO_CPUS_SHARED = 0,
810 FIO_CPUS_SPLIT,
811};
812
813extern void exec_trigger(const char *);
814extern void check_trigger_file(void);
815
816#endif
fio - Flexible IO Tester