8 #include <sys/resource.h>
28 unsigned long long val;
29 unsigned long long val_sq;
30 unsigned long max_val;
31 unsigned long min_val;
32 unsigned long samples;
42 unsigned long nr_samples;
43 unsigned long max_samples;
44 struct io_sample *log;
48 struct list_head list;
49 struct fio_file *file;
50 unsigned long long offset;
60 #ifdef FIO_HAVE_LIBAIO
63 #ifdef FIO_HAVE_POSIXAIO
70 struct timeval start_time;
71 struct timeval issue_time;
75 unsigned long long offset;
83 * io engine private data
90 struct fio_file *file;
92 struct list_head list;
95 #define FIO_HDR_MAGIC 0xf00baaef
103 struct verify_header {
104 unsigned int fio_magic;
106 unsigned int verify_type;
108 char md5_digest[MD5_HASH_WORDS * 4];
113 struct group_run_stats {
114 unsigned long long max_run[2], min_run[2];
115 unsigned long long max_bw[2], min_bw[2];
116 unsigned long long io_kb[2];
117 unsigned long long agg[2];
121 * What type of allocation to use for io buffers
124 MEM_MALLOC = 0, /* ordinary malloc */
125 MEM_SHM, /* use shared memory segments */
126 MEM_SHMHUGE, /* use shared memory segments with huge pages */
127 MEM_MMAP, /* use anonynomous mmap */
128 MEM_MMAPHUGE, /* memory mapped huge file */
132 * The type of object we are working on
140 enum fio_ioengine_flags {
149 * A file may not be a file descriptor, let the io engine decide
152 unsigned long file_data;
157 unsigned long long file_size;
158 unsigned long long real_file_size;
159 unsigned long long file_offset;
160 unsigned long long last_pos;
161 unsigned long long last_completed_pos;
163 unsigned long *file_map;
164 unsigned int num_maps;
170 * This describes a single thread/process executing a fio job.
180 enum fio_filetype filetype;
181 struct fio_file *files;
182 unsigned int nr_files;
183 unsigned int nr_uniq_files;
184 unsigned int next_file;
188 size_t orig_buffer_size;
189 volatile int terminate;
190 volatile int runstate;
194 unsigned int last_was_sync;
196 unsigned int sequential;
197 unsigned int odirect;
198 unsigned int invalidate_cache;
199 unsigned int create_serialize;
200 unsigned int create_fsync;
201 unsigned int end_fsync;
202 unsigned int sync_io;
204 unsigned int use_thread;
206 unsigned int do_disk_util;
207 unsigned int override_sync;
208 unsigned int rand_repeatable;
209 unsigned int write_lat_log;
210 unsigned int write_bw_log;
211 unsigned int norandommap;
212 unsigned int bs_unaligned;
215 unsigned int min_bs[2];
216 unsigned int max_bs[2];
217 unsigned int hugepage_size;
218 unsigned int rw_min_bs;
219 unsigned int thinktime;
220 unsigned int thinktime_blocks;
221 unsigned int fsync_blocks;
222 unsigned int start_delay;
223 unsigned long timeout;
224 unsigned int overwrite;
225 unsigned int bw_avg_time;
227 unsigned long long zone_size;
228 unsigned long long zone_skip;
229 enum fio_memtype mem_type;
232 unsigned int stonewall;
233 unsigned int numjobs;
234 unsigned int iodepth;
235 os_cpu_mask_t cpumask;
237 unsigned int read_iolog;
238 unsigned int rwmixcycle;
239 unsigned int rwmixread;
240 unsigned int rwmixwrite;
243 char *read_iolog_file;
244 char *write_iolog_file;
251 os_random_state_t bsrange_state;
252 os_random_state_t verify_state;
257 * IO engine hooks, contains everything needed to submit an io_u
258 * to any of the available IO engines.
260 struct ioengine_ops *io_ops;
263 * Current IO depth and list of free and busy io_u's.
265 unsigned int cur_depth;
266 struct list_head io_u_freelist;
267 struct list_head io_u_busylist;
273 unsigned int ratemin;
274 unsigned int ratecycle;
275 unsigned long rate_usec_cycle;
276 long rate_pending_usleep;
277 unsigned long rate_bytes;
278 struct timeval lastrate;
280 unsigned long runtime[2]; /* msec */
281 unsigned long long io_size;
282 unsigned long long total_file_size;
283 unsigned long long start_offset;
284 unsigned long long total_io_size;
286 unsigned long long io_blocks[2];
287 unsigned long long io_bytes[2];
288 unsigned long long zone_bytes;
289 unsigned long long this_io_bytes[2];
293 * State for random io, a bitmap of blocks done vs not done
295 os_random_state_t random_state;
298 * CPU "io" cycle burner
300 unsigned int cpuload;
301 unsigned int cpucycle;
304 * bandwidth and latency stats
306 struct io_stat clat_stat[2]; /* completion latency */
307 struct io_stat slat_stat[2]; /* submission latency */
308 struct io_stat bw_stat[2]; /* bandwidth stats */
310 unsigned long long stat_io_bytes[2];
311 struct timeval stat_sample_time[2];
313 struct io_log *slat_log;
314 struct io_log *clat_log;
315 struct io_log *bw_log;
317 struct timeval start; /* start of this loop */
318 struct timeval epoch; /* time job was started */
319 struct timeval end_time;/* time job ended */
322 * fio system usage accounting
324 struct rusage ru_start;
325 struct rusage ru_end;
326 unsigned long usr_time;
327 unsigned long sys_time;
331 * read/write mixed workload state
333 os_random_state_t rwmix_state;
334 struct timeval rwmix_switch;
335 enum fio_ddir rwmix_ddir;
338 * Pre-run and post-run shell
346 struct list_head io_hist_list;
347 struct list_head io_log_list;
350 #define __td_verror(td, err, msg) \
354 snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, error=%s", __FILE__, __LINE__, (msg)); \
358 #define td_verror(td, err) __td_verror((td), (err), strerror((err)))
359 #define td_vmsg(td, err, msg) __td_verror((td), (err), (msg))
361 extern int exitall_on_terminate;
362 extern int thread_number;
365 extern int terse_output;
368 extern int temp_stall_ts;
369 extern unsigned long long mlock_size;
371 extern struct thread_data *threads;
373 #define td_read(td) ((td)->ddir == DDIR_READ)
374 #define td_write(td) ((td)->ddir == DDIR_WRITE)
375 #define td_rw(td) ((td)->iomix != 0)
377 #define BLOCKS_PER_MAP (8 * sizeof(long))
378 #define TO_MAP_BLOCK(td, f, b) ((b) - ((f)->file_offset / (td)->rw_min_bs))
379 #define RAND_MAP_IDX(td, f, b) (TO_MAP_BLOCK(td, f, b) / BLOCKS_PER_MAP)
380 #define RAND_MAP_BIT(td, f, b) (TO_MAP_BLOCK(td, f, b) & (BLOCKS_PER_MAP - 1))
382 #define MAX_JOBS (1024)
384 static inline int should_fsync(struct thread_data *td)
386 if (td->last_was_sync)
390 if (td_write(td) || td_rw(td) || td->override_sync)
396 struct disk_util_stat {
399 unsigned long long sectors[2];
402 unsigned time_in_queue;
406 struct list_head list;
412 struct disk_util_stat dus;
413 struct disk_util_stat last_dus;
419 struct io_completion_data {
422 int error; /* output */
423 unsigned long bytes_done[2]; /* output */
424 struct timeval time; /* output */
427 #define DISK_UTIL_MSEC (250)
430 #define min(a, b) ((a) < (b) ? (a) : (b))
433 #define max(a, b) ((a) > (b) ? (a) : (b))
439 extern int read_iolog_get(struct thread_data *, struct io_u *);
440 extern void write_iolog_put(struct thread_data *, struct io_u *);
441 extern int init_iolog(struct thread_data *td);
442 extern void log_io_piece(struct thread_data *, struct io_u *);
443 extern void prune_io_piece_log(struct thread_data *);
444 extern void write_iolog_close(struct thread_data *);
449 extern void add_clat_sample(struct thread_data *, enum fio_ddir, unsigned long);
450 extern void add_slat_sample(struct thread_data *, enum fio_ddir, unsigned long);
451 extern void add_bw_sample(struct thread_data *, enum fio_ddir, struct timeval *);
452 extern void show_run_stats(void);
453 extern void init_disk_util(struct thread_data *);
454 extern void update_rusage_stat(struct thread_data *);
455 extern void update_io_ticks(void);
456 extern void disk_util_timer_arm(void);
457 extern void setup_log(struct io_log **);
458 extern void finish_log(struct thread_data *, struct io_log *, const char *);
459 extern int setup_rate(struct thread_data *);
464 extern unsigned long utime_since(struct timeval *, struct timeval *);
465 extern unsigned long utime_since_now(struct timeval *);
466 extern unsigned long mtime_since(struct timeval *, struct timeval *);
467 extern unsigned long mtime_since_now(struct timeval *);
468 extern unsigned long time_since_now(struct timeval *);
469 extern unsigned long mtime_since_genesis(void);
470 extern void __usec_sleep(unsigned int);
471 extern void usec_sleep(struct thread_data *, unsigned long);
472 extern void rate_throttle(struct thread_data *, unsigned long, unsigned int, int);
473 extern void fill_start_time(struct timeval *);
474 extern void fio_gettime(struct timeval *, void *);
479 extern int parse_options(int, char **);
480 extern int init_random_state(struct thread_data *);
483 * File setup/shutdown
485 extern void close_files(struct thread_data *);
486 extern int setup_files(struct thread_data *);
487 extern int open_files(struct thread_data *);
488 extern int file_invalidate_cache(struct thread_data *, struct fio_file *);
493 extern void print_thread_status(void);
494 extern void print_status_init(int);
497 * Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
498 * will never back again. It may cycle between running/verififying/fsyncing.
499 * Once the thread reaches TD_EXITED, it is just waiting for the core to
516 extern void populate_verify_io_u(struct thread_data *, struct io_u *);
517 extern int get_next_verify(struct thread_data *td, struct io_u *);
518 extern int do_io_u_verify(struct thread_data *, struct io_u **);
523 extern int fio_pin_memory(void);
524 extern void fio_unpin_memory(void);
525 extern int allocate_io_mem(struct thread_data *);
526 extern void free_io_mem(struct thread_data *);
531 #define queue_full(td) list_empty(&(td)->io_u_freelist)
532 extern struct io_u *__get_io_u(struct thread_data *);
533 extern struct io_u *get_io_u(struct thread_data *, struct fio_file *);
534 extern void put_io_u(struct thread_data *, struct io_u *);
535 extern void ios_completed(struct thread_data *, struct io_completion_data *);
536 extern void io_completed(struct thread_data *, struct io_u *, struct io_completion_data *);
539 * io engine entry points
541 extern int td_io_init(struct thread_data *);
542 extern int td_io_prep(struct thread_data *, struct io_u *);
543 extern int td_io_queue(struct thread_data *, struct io_u *);
544 extern int td_io_sync(struct thread_data *, struct fio_file *);
545 extern int td_io_getevents(struct thread_data *, int, int, struct timespec *);
548 * This is a pretty crappy semaphore implementation, but with the use that fio
549 * has (just signalling start/go conditions), it doesn't have to be better.
550 * Naturally this would not work for any type of contended semaphore or
553 static inline void fio_sem_init(volatile int *sem, int val)
558 static inline void fio_sem_down(volatile int *sem)
566 static inline void fio_sem_up(volatile int *sem)
572 * If logging output to a file, stderr should go to both stderr and f_err
574 #define log_err(args...) do { \
575 fprintf(f_err, ##args); \
576 if (f_err != stderr) \
577 fprintf(stderr, ##args); \
580 struct ioengine_ops {
581 struct list_head list;
585 int (*setup)(struct thread_data *);
586 int (*init)(struct thread_data *);
587 int (*prep)(struct thread_data *, struct io_u *);
588 int (*queue)(struct thread_data *, struct io_u *);
589 int (*getevents)(struct thread_data *, int, int, struct timespec *);
590 struct io_u *(*event)(struct thread_data *, int);
591 int (*cancel)(struct thread_data *, struct io_u *);
592 void (*cleanup)(struct thread_data *);
597 #define FIO_IOOPS_VERSION 3
599 extern struct ioengine_ops *load_ioengine(struct thread_data *, const char *);
600 extern int register_ioengine(struct ioengine_ops *);
601 extern void unregister_ioengine(struct ioengine_ops *);
602 extern void close_ioengine(struct thread_data *);
605 * Mark unused variables passed to ops functions as unused, to silence gcc
607 #define fio_unused __attribute((__unused__))
608 #define fio_init __attribute__((constructor))
609 #define fio_exit __attribute__((destructor))
611 #define for_each_td(td, i) \
612 for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++)
613 #define for_each_file(td, f, i) \
614 for ((i) = 0, (f) = &(td)->files[0]; (i) < (int) (td)->nr_files; (i)++, (f)++)