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steadystate: make test script work better under Windows
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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
113/*
114 * Per-thread/process specific data. Only used for the network client
115 * for now.
116 */
117struct sk_out;
118void sk_out_assign(struct sk_out *);
119void sk_out_drop(void);
120
121struct zone_split_index {
122 uint8_t size_perc;
123 uint8_t size_perc_prev;
124};
125
126/*
127 * This describes a single thread/process executing a fio job.
128 */
129struct thread_data {
130 struct flist_head opt_list;
131 unsigned long flags;
132 struct thread_options o;
133 void *eo;
134 pthread_t thread;
135 unsigned int thread_number;
136 unsigned int subjob_number;
137 unsigned int groupid;
138 struct thread_stat ts;
139
140 int client_type;
141
142 struct io_log *slat_log;
143 struct io_log *clat_log;
144 struct io_log *clat_hist_log;
145 struct io_log *lat_log;
146 struct io_log *bw_log;
147 struct io_log *iops_log;
148
149 struct workqueue log_compress_wq;
150
151 struct thread_data *parent;
152
153 uint64_t stat_io_bytes[DDIR_RWDIR_CNT];
154 struct timeval bw_sample_time;
155
156 uint64_t stat_io_blocks[DDIR_RWDIR_CNT];
157 struct timeval iops_sample_time;
158
159 volatile int update_rusage;
160 struct fio_mutex *rusage_sem;
161 struct rusage ru_start;
162 struct rusage ru_end;
163
164 struct fio_file **files;
165 unsigned char *file_locks;
166 unsigned int files_size;
167 unsigned int files_index;
168 unsigned int nr_open_files;
169 unsigned int nr_done_files;
170 unsigned int nr_normal_files;
171 union {
172 unsigned int next_file;
173 struct frand_state next_file_state;
174 };
175 union {
176 struct zipf_state next_file_zipf;
177 struct gauss_state next_file_gauss;
178 };
179 union {
180 double zipf_theta;
181 double pareto_h;
182 double gauss_dev;
183 };
184 int error;
185 int sig;
186 int done;
187 int stop_io;
188 pid_t pid;
189 char *orig_buffer;
190 size_t orig_buffer_size;
191 volatile int terminate;
192 volatile int runstate;
193 unsigned int last_was_sync;
194 enum fio_ddir last_ddir;
195
196 int mmapfd;
197
198 void *iolog_buf;
199 FILE *iolog_f;
200
201 char *sysfs_root;
202
203 unsigned long rand_seeds[FIO_RAND_NR_OFFS];
204
205 struct frand_state bsrange_state;
206 struct frand_state verify_state;
207 struct frand_state trim_state;
208 struct frand_state delay_state;
209
210 struct frand_state buf_state;
211 struct frand_state buf_state_prev;
212 struct frand_state dedupe_state;
213 struct frand_state zone_state;
214
215 struct zone_split_index **zone_state_index;
216
217 unsigned int verify_batch;
218 unsigned int trim_batch;
219
220 struct thread_io_list *vstate;
221
222 int shm_id;
223
224 /*
225 * IO engine hooks, contains everything needed to submit an io_u
226 * to any of the available IO engines.
227 */
228 struct ioengine_ops *io_ops;
229
230 /*
231 * IO engine private data and dlhandle.
232 */
233 void *io_ops_data;
234 void *io_ops_dlhandle;
235
236 /*
237 * Queue depth of io_u's that fio MIGHT do
238 */
239 unsigned int cur_depth;
240
241 /*
242 * io_u's about to be committed
243 */
244 unsigned int io_u_queued;
245
246 /*
247 * io_u's submitted but not completed yet
248 */
249 unsigned int io_u_in_flight;
250
251 /*
252 * List of free and busy io_u's
253 */
254 struct io_u_ring io_u_requeues;
255 struct io_u_queue io_u_freelist;
256 struct io_u_queue io_u_all;
257 pthread_mutex_t io_u_lock;
258 pthread_cond_t free_cond;
259
260 /*
261 * async verify offload
262 */
263 struct flist_head verify_list;
264 pthread_t *verify_threads;
265 unsigned int nr_verify_threads;
266 pthread_cond_t verify_cond;
267 int verify_thread_exit;
268
269 /*
270 * Rate state
271 */
272 uint64_t rate_bps[DDIR_RWDIR_CNT];
273 unsigned long rate_next_io_time[DDIR_RWDIR_CNT];
274 unsigned long rate_bytes[DDIR_RWDIR_CNT];
275 unsigned long rate_blocks[DDIR_RWDIR_CNT];
276 unsigned long rate_io_issue_bytes[DDIR_RWDIR_CNT];
277 struct timeval lastrate[DDIR_RWDIR_CNT];
278 int64_t last_usec;
279 struct frand_state poisson_state;
280
281 /*
282 * Enforced rate submission/completion workqueue
283 */
284 struct workqueue io_wq;
285
286 uint64_t total_io_size;
287 uint64_t fill_device_size;
288
289 /*
290 * Issue side
291 */
292 uint64_t io_issues[DDIR_RWDIR_CNT];
293 uint64_t io_issue_bytes[DDIR_RWDIR_CNT];
294 uint64_t loops;
295
296 /*
297 * Completions
298 */
299 uint64_t io_blocks[DDIR_RWDIR_CNT];
300 uint64_t this_io_blocks[DDIR_RWDIR_CNT];
301 uint64_t io_bytes[DDIR_RWDIR_CNT];
302 uint64_t this_io_bytes[DDIR_RWDIR_CNT];
303 uint64_t io_skip_bytes;
304 uint64_t zone_bytes;
305 struct fio_mutex *mutex;
306 uint64_t bytes_done[DDIR_RWDIR_CNT];
307
308 /*
309 * State for random io, a bitmap of blocks done vs not done
310 */
311 struct frand_state random_state;
312
313 struct timeval start; /* start of this loop */
314 struct timeval epoch; /* time job was started */
315 struct timeval last_issue;
316 long time_offset;
317 struct timeval tv_cache;
318 struct timeval terminate_time;
319 unsigned int tv_cache_nr;
320 unsigned int tv_cache_mask;
321 unsigned int ramp_time_over;
322
323 /*
324 * Time since last latency_window was started
325 */
326 struct timeval latency_ts;
327 unsigned int latency_qd;
328 unsigned int latency_qd_high;
329 unsigned int latency_qd_low;
330 unsigned int latency_failed;
331 uint64_t latency_ios;
332 int latency_end_run;
333
334 /*
335 * read/write mixed workload state
336 */
337 struct frand_state rwmix_state;
338 unsigned long rwmix_issues;
339 enum fio_ddir rwmix_ddir;
340 unsigned int ddir_seq_nr;
341
342 /*
343 * rand/seq mixed workload state
344 */
345 struct frand_state seq_rand_state[DDIR_RWDIR_CNT];
346
347 /*
348 * IO history logs for verification. We use a tree for sorting,
349 * if we are overwriting. Otherwise just use a fifo.
350 */
351 struct rb_root io_hist_tree;
352 struct flist_head io_hist_list;
353 unsigned long io_hist_len;
354
355 /*
356 * For IO replaying
357 */
358 struct flist_head io_log_list;
359
360 /*
361 * For tracking/handling discards
362 */
363 struct flist_head trim_list;
364 unsigned long trim_entries;
365
366 struct flist_head next_rand_list;
367
368 /*
369 * for fileservice, how often to switch to a new file
370 */
371 unsigned int file_service_nr;
372 unsigned int file_service_left;
373 struct fio_file *file_service_file;
374
375 unsigned int sync_file_range_nr;
376
377 /*
378 * For generating file sizes
379 */
380 struct frand_state file_size_state;
381
382 /*
383 * Error counts
384 */
385 unsigned int total_err_count;
386 int first_error;
387
388 struct fio_flow *flow;
389
390 /*
391 * Can be overloaded by profiles
392 */
393 struct prof_io_ops prof_io_ops;
394 void *prof_data;
395
396 void *pinned_mem;
397
398 struct steadystate_data ss;
399
400 char verror[FIO_VERROR_SIZE];
401};
402
403/*
404 * when should interactive ETA output be generated
405 */
406enum {
407 FIO_ETA_AUTO,
408 FIO_ETA_ALWAYS,
409 FIO_ETA_NEVER,
410};
411
412#define __td_verror(td, err, msg, func) \
413 do { \
414 unsigned int ____e = (err); \
415 if ((td)->error) \
416 break; \
417 (td)->error = ____e; \
418 if (!(td)->first_error) \
419 snprintf(td->verror, sizeof(td->verror), "file:%s:%d, func=%s, error=%s", __FILE__, __LINE__, (func), (msg)); \
420 } while (0)
421
422
423#define td_clear_error(td) do { \
424 (td)->error = 0; \
425 if ((td)->parent) \
426 (td)->parent->error = 0; \
427} while (0)
428
429#define td_verror(td, err, func) do { \
430 __td_verror((td), (err), strerror((err)), (func)); \
431 if ((td)->parent) \
432 __td_verror((td)->parent, (err), strerror((err)), (func)); \
433} while (0)
434
435#define td_vmsg(td, err, msg, func) do { \
436 __td_verror((td), (err), (msg), (func)); \
437 if ((td)->parent) \
438 __td_verror((td)->parent, (err), (msg), (func)); \
439} while (0)
440
441#define __fio_stringify_1(x) #x
442#define __fio_stringify(x) __fio_stringify_1(x)
443
444extern int exitall_on_terminate;
445extern unsigned int thread_number;
446extern unsigned int stat_number;
447extern int shm_id;
448extern int groupid;
449extern int output_format;
450extern int append_terse_output;
451extern int temp_stall_ts;
452extern uintptr_t page_mask, page_size;
453extern int read_only;
454extern int eta_print;
455extern int eta_new_line;
456extern unsigned long done_secs;
457extern char *job_section;
458extern int fio_gtod_offload;
459extern int fio_gtod_cpu;
460extern enum fio_cs fio_clock_source;
461extern int fio_clock_source_set;
462extern int warnings_fatal;
463extern int terse_version;
464extern int is_backend;
465extern int nr_clients;
466extern int log_syslog;
467extern int status_interval;
468extern const char fio_version_string[];
469extern char *trigger_file;
470extern char *trigger_cmd;
471extern char *trigger_remote_cmd;
472extern long long trigger_timeout;
473extern char *aux_path;
474
475extern struct thread_data *threads;
476
477static inline void fio_ro_check(const struct thread_data *td, struct io_u *io_u)
478{
479 assert(!(io_u->ddir == DDIR_WRITE && !td_write(td)));
480}
481
482#define REAL_MAX_JOBS 2048
483
484static inline int should_fsync(struct thread_data *td)
485{
486 if (td->last_was_sync)
487 return 0;
488 if (td_write(td) || td_rw(td) || td->o.override_sync)
489 return 1;
490
491 return 0;
492}
493
494/*
495 * Init/option functions
496 */
497extern int __must_check fio_init_options(void);
498extern int __must_check parse_options(int, char **);
499extern int parse_jobs_ini(char *, int, int, int);
500extern int parse_cmd_line(int, char **, int);
501extern int fio_backend(struct sk_out *);
502extern void reset_fio_state(void);
503extern void clear_io_state(struct thread_data *, int);
504extern int fio_options_parse(struct thread_data *, char **, int);
505extern void fio_keywords_init(void);
506extern void fio_keywords_exit(void);
507extern int fio_cmd_option_parse(struct thread_data *, const char *, char *);
508extern int fio_cmd_ioengine_option_parse(struct thread_data *, const char *, char *);
509extern void fio_fill_default_options(struct thread_data *);
510extern int fio_show_option_help(const char *);
511extern void fio_options_set_ioengine_opts(struct option *long_options, struct thread_data *td);
512extern void fio_options_dup_and_init(struct option *);
513extern void fio_options_mem_dupe(struct thread_data *);
514extern void options_mem_dupe(void *data, struct fio_option *options);
515extern void td_fill_rand_seeds(struct thread_data *);
516extern void td_fill_verify_state_seed(struct thread_data *);
517extern void add_job_opts(const char **, int);
518extern char *num2str(uint64_t, int, int, int, int);
519extern int ioengine_load(struct thread_data *);
520extern int parse_dryrun(void);
521extern int fio_running_or_pending_io_threads(void);
522extern int fio_set_fd_nonblocking(int, const char *);
523extern void sig_show_status(int sig);
524extern struct thread_data *get_global_options(void);
525
526extern uintptr_t page_mask;
527extern uintptr_t page_size;
528extern int initialize_fio(char *envp[]);
529extern void deinitialize_fio(void);
530
531#define FIO_GETOPT_JOB 0x89000000
532#define FIO_GETOPT_IOENGINE 0x98000000
533#define FIO_NR_OPTIONS (FIO_MAX_OPTS + 128)
534
535/*
536 * ETA/status stuff
537 */
538extern void print_thread_status(void);
539extern void print_status_init(int);
540extern char *fio_uint_to_kmg(unsigned int val);
541
542/*
543 * Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
544 * will never back again. It may cycle between running/verififying/fsyncing.
545 * Once the thread reaches TD_EXITED, it is just waiting for the core to
546 * reap it.
547 */
548enum {
549 TD_NOT_CREATED = 0,
550 TD_CREATED,
551 TD_INITIALIZED,
552 TD_RAMP,
553 TD_SETTING_UP,
554 TD_RUNNING,
555 TD_PRE_READING,
556 TD_VERIFYING,
557 TD_FSYNCING,
558 TD_FINISHING,
559 TD_EXITED,
560 TD_REAPED,
561 TD_LAST,
562 TD_NR,
563};
564
565#define TD_ENG_FLAG_SHIFT 16
566#define TD_ENG_FLAG_MASK ((1U << 16) - 1)
567
568static inline enum fio_ioengine_flags td_ioengine_flags(struct thread_data *td)
569{
570 return (td->flags >> TD_ENG_FLAG_SHIFT) & TD_ENG_FLAG_MASK;
571}
572
573static inline void td_set_ioengine_flags(struct thread_data *td)
574{
575 td->flags |= (td->io_ops->flags << TD_ENG_FLAG_SHIFT);
576}
577
578static inline bool td_ioengine_flagged(struct thread_data *td, unsigned int val)
579{
580 return ((td->flags >> TD_ENG_FLAG_SHIFT) & val) != 0;
581}
582
583extern void td_set_runstate(struct thread_data *, int);
584extern int td_bump_runstate(struct thread_data *, int);
585extern void td_restore_runstate(struct thread_data *, int);
586extern const char *runstate_to_name(int runstate);
587
588/*
589 * Allow 60 seconds for a job to quit on its own, otherwise reap with
590 * a vengeance.
591 */
592#define FIO_REAP_TIMEOUT 60
593
594#define TERMINATE_ALL (-1U)
595extern void fio_terminate_threads(unsigned int);
596extern void fio_mark_td_terminate(struct thread_data *);
597
598/*
599 * Memory helpers
600 */
601extern int __must_check fio_pin_memory(struct thread_data *);
602extern void fio_unpin_memory(struct thread_data *);
603extern int __must_check allocate_io_mem(struct thread_data *);
604extern void free_io_mem(struct thread_data *);
605extern void free_threads_shm(void);
606
607/*
608 * Reset stats after ramp time completes
609 */
610extern void reset_all_stats(struct thread_data *);
611
612/*
613 * blktrace support
614 */
615#ifdef FIO_HAVE_BLKTRACE
616extern int is_blktrace(const char *, int *);
617extern int load_blktrace(struct thread_data *, const char *, int);
618#endif
619
620extern int io_queue_event(struct thread_data *td, struct io_u *io_u, int *ret,
621 enum fio_ddir ddir, uint64_t *bytes_issued, int from_verify,
622 struct timeval *comp_time);
623
624/*
625 * Latency target helpers
626 */
627extern void lat_target_check(struct thread_data *);
628extern void lat_target_init(struct thread_data *);
629extern void lat_target_reset(struct thread_data *);
630
631#define for_each_td(td, i) \
632 for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++)
633#define for_each_file(td, f, i) \
634 if ((td)->files_index) \
635 for ((i) = 0, (f) = (td)->files[0]; \
636 (i) < (td)->o.nr_files && ((f) = (td)->files[i]) != NULL; \
637 (i)++)
638
639#define fio_assert(td, cond) do { \
640 if (!(cond)) { \
641 int *__foo = NULL; \
642 fprintf(stderr, "file:%s:%d, assert %s failed\n", __FILE__, __LINE__, #cond); \
643 td_set_runstate((td), TD_EXITED); \
644 (td)->error = EFAULT; \
645 *__foo = 0; \
646 } \
647} while (0)
648
649static inline int fio_fill_issue_time(struct thread_data *td)
650{
651 if (td->o.read_iolog_file ||
652 !td->o.disable_clat || !td->o.disable_slat || !td->o.disable_bw)
653 return 1;
654
655 return 0;
656}
657
658static inline int __should_check_rate(struct thread_data *td,
659 enum fio_ddir ddir)
660{
661 struct thread_options *o = &td->o;
662
663 /*
664 * If some rate setting was given, we need to check it
665 */
666 if (o->rate[ddir] || o->ratemin[ddir] || o->rate_iops[ddir] ||
667 o->rate_iops_min[ddir])
668 return 1;
669
670 return 0;
671}
672
673static inline int should_check_rate(struct thread_data *td)
674{
675 int ret = 0;
676
677 if (td->bytes_done[DDIR_READ])
678 ret |= __should_check_rate(td, DDIR_READ);
679 if (td->bytes_done[DDIR_WRITE])
680 ret |= __should_check_rate(td, DDIR_WRITE);
681 if (td->bytes_done[DDIR_TRIM])
682 ret |= __should_check_rate(td, DDIR_TRIM);
683
684 return ret;
685}
686
687static inline unsigned int td_max_bs(struct thread_data *td)
688{
689 unsigned int max_bs;
690
691 max_bs = max(td->o.max_bs[DDIR_READ], td->o.max_bs[DDIR_WRITE]);
692 return max(td->o.max_bs[DDIR_TRIM], max_bs);
693}
694
695static inline unsigned int td_min_bs(struct thread_data *td)
696{
697 unsigned int min_bs;
698
699 min_bs = min(td->o.min_bs[DDIR_READ], td->o.min_bs[DDIR_WRITE]);
700 return min(td->o.min_bs[DDIR_TRIM], min_bs);
701}
702
703static inline bool td_async_processing(struct thread_data *td)
704{
705 return (td->flags & TD_F_NEED_LOCK) != 0;
706}
707
708/*
709 * We currently only need to do locking if we have verifier threads
710 * accessing our internal structures too
711 */
712static inline void td_io_u_lock(struct thread_data *td)
713{
714 if (td_async_processing(td))
715 pthread_mutex_lock(&td->io_u_lock);
716}
717
718static inline void td_io_u_unlock(struct thread_data *td)
719{
720 if (td_async_processing(td))
721 pthread_mutex_unlock(&td->io_u_lock);
722}
723
724static inline void td_io_u_free_notify(struct thread_data *td)
725{
726 if (td_async_processing(td))
727 pthread_cond_signal(&td->free_cond);
728}
729
730static inline void td_flags_clear(struct thread_data *td, unsigned int *flags,
731 unsigned int value)
732{
733 if (!td_async_processing(td))
734 *flags &= ~value;
735 else
736 __sync_fetch_and_and(flags, ~value);
737}
738
739static inline void td_flags_set(struct thread_data *td, unsigned int *flags,
740 unsigned int value)
741{
742 if (!td_async_processing(td))
743 *flags |= value;
744 else
745 __sync_fetch_and_or(flags, value);
746}
747
748extern const char *fio_get_arch_string(int);
749extern const char *fio_get_os_string(int);
750
751#ifdef FIO_INTERNAL
752#define ARRAY_SIZE(x) (sizeof((x)) / (sizeof((x)[0])))
753#define FIELD_SIZE(s, f) (sizeof(((typeof(s))0)->f))
754#endif
755
756enum {
757 __FIO_OUTPUT_TERSE = 0,
758 __FIO_OUTPUT_JSON = 1,
759 __FIO_OUTPUT_NORMAL = 2,
760 __FIO_OUTPUT_JSON_PLUS = 3,
761 FIO_OUTPUT_NR = 4,
762
763 FIO_OUTPUT_TERSE = 1U << __FIO_OUTPUT_TERSE,
764 FIO_OUTPUT_JSON = 1U << __FIO_OUTPUT_JSON,
765 FIO_OUTPUT_NORMAL = 1U << __FIO_OUTPUT_NORMAL,
766 FIO_OUTPUT_JSON_PLUS = 1U << __FIO_OUTPUT_JSON_PLUS,
767};
768
769enum {
770 FIO_RAND_DIST_RANDOM = 0,
771 FIO_RAND_DIST_ZIPF,
772 FIO_RAND_DIST_PARETO,
773 FIO_RAND_DIST_GAUSS,
774 FIO_RAND_DIST_ZONED,
775};
776
777#define FIO_DEF_ZIPF 1.1
778#define FIO_DEF_PARETO 0.2
779
780enum {
781 FIO_RAND_GEN_TAUSWORTHE = 0,
782 FIO_RAND_GEN_LFSR,
783 FIO_RAND_GEN_TAUSWORTHE64,
784};
785
786enum {
787 FIO_CPUS_SHARED = 0,
788 FIO_CPUS_SPLIT,
789};
790
791extern void exec_trigger(const char *);
792extern void check_trigger_file(void);
793
794#endif
fio - Flexible IO Tester