8 #include <sys/resource.h>
23 unsigned long max_val;
24 unsigned long min_val;
25 unsigned long samples;
35 unsigned long nr_samples;
36 unsigned long max_samples;
37 struct io_sample *log;
41 struct list_head list;
42 struct fio_file *file;
43 unsigned long long offset;
53 #ifdef FIO_HAVE_LIBAIO
56 #ifdef FIO_HAVE_POSIXAIO
63 struct timeval start_time;
64 struct timeval issue_time;
68 unsigned long long offset;
76 * io engine private data
83 struct fio_file *file;
85 struct list_head list;
88 #define FIO_HDR_MAGIC 0xf00baaef
96 struct verify_header {
97 unsigned int fio_magic;
99 unsigned int verify_type;
101 char md5_digest[MD5_HASH_WORDS * 4];
106 struct group_run_stats {
107 unsigned long long max_run[2], min_run[2];
108 unsigned long long max_bw[2], min_bw[2];
109 unsigned long long io_kb[2];
110 unsigned long long agg[2];
120 * What type of allocation to use for io buffers
123 MEM_MALLOC = 0, /* ordinary malloc */
124 MEM_SHM, /* use shared memory segments */
125 MEM_MMAP, /* use anonynomous mmap */
129 * The type of object we are working on
137 enum fio_ioengine_flags {
146 * A file may not be a file descriptor, let the io engine decide
149 unsigned long file_data;
154 unsigned long long file_size;
155 unsigned long long real_file_size;
156 unsigned long long file_offset;
157 unsigned long long last_pos;
159 unsigned long *file_map;
160 unsigned int num_maps;
164 * This describes a single thread/process executing a fio job.
174 enum fio_filetype filetype;
175 struct fio_file *files;
176 unsigned int nr_files;
177 unsigned int nr_uniq_files;
178 unsigned int next_file;
182 size_t orig_buffer_size;
183 volatile int terminate;
184 volatile int runstate;
188 unsigned int last_was_sync;
190 unsigned int sequential;
191 unsigned int odirect;
192 unsigned int invalidate_cache;
193 unsigned int create_serialize;
194 unsigned int create_fsync;
195 unsigned int end_fsync;
196 unsigned int sync_io;
198 unsigned int use_thread;
200 unsigned int do_disk_util;
201 unsigned int override_sync;
202 unsigned int rand_repeatable;
203 unsigned int write_lat_log;
204 unsigned int write_bw_log;
209 unsigned int thinktime;
210 unsigned int fsync_blocks;
211 unsigned int start_delay;
212 unsigned long timeout;
213 unsigned int overwrite;
214 unsigned int bw_avg_time;
216 unsigned long long zone_size;
217 unsigned long long zone_skip;
218 enum fio_memtype mem_type;
219 unsigned int stonewall;
220 unsigned int numjobs;
221 unsigned int iodepth;
222 os_cpu_mask_t cpumask;
224 unsigned int read_iolog;
225 unsigned int rwmixcycle;
226 unsigned int rwmixread;
227 unsigned int rwmixwrite;
230 char *read_iolog_file;
231 char *write_iolog_file;
238 os_random_state_t bsrange_state;
239 os_random_state_t verify_state;
244 * IO engine hooks, contains everything needed to submit an io_u
245 * to any of the available IO engines.
247 struct ioengine_ops *io_ops;
250 * Current IO depth and list of free and busy io_u's.
252 unsigned int cur_depth;
253 struct list_head io_u_freelist;
254 struct list_head io_u_busylist;
260 unsigned int ratemin;
261 unsigned int ratecycle;
262 unsigned long rate_usec_cycle;
263 long rate_pending_usleep;
264 unsigned long rate_bytes;
265 struct timeval lastrate;
267 unsigned long runtime[2]; /* msec */
268 unsigned long long io_size;
269 unsigned long long total_file_size;
270 unsigned long long start_offset;
271 unsigned long long total_io_size;
273 unsigned long long io_blocks[2];
274 unsigned long long io_bytes[2];
275 unsigned long long zone_bytes;
276 unsigned long long this_io_bytes[2];
280 * State for random io, a bitmap of blocks done vs not done
282 os_random_state_t random_state;
285 * CPU "io" cycle burner
287 unsigned int cpuload;
288 unsigned int cpucycle;
291 * bandwidth and latency stats
293 struct io_stat clat_stat[2]; /* completion latency */
294 struct io_stat slat_stat[2]; /* submission latency */
295 struct io_stat bw_stat[2]; /* bandwidth stats */
297 unsigned long long stat_io_bytes[2];
298 struct timeval stat_sample_time[2];
300 struct io_log *slat_log;
301 struct io_log *clat_log;
302 struct io_log *bw_log;
304 struct timeval start; /* start of this loop */
305 struct timeval epoch; /* time job was started */
308 * fio system usage accounting
310 struct rusage ru_start;
311 struct rusage ru_end;
312 unsigned long usr_time;
313 unsigned long sys_time;
317 * read/write mixed workload state
319 os_random_state_t rwmix_state;
320 struct timeval rwmix_switch;
321 enum fio_ddir rwmix_ddir;
324 * Pre-run and post-run shell
332 struct list_head io_hist_list;
333 struct list_head io_log_list;
336 #define __td_verror(td, err, msg) \
340 snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, error=%s", __FILE__, __LINE__, (msg)); \
344 #define td_verror(td, err) __td_verror((td), (err), strerror((err)))
345 #define td_vmsg(td, err, msg) __td_verror((td), (err), (msg))
347 extern int rate_quit;
348 extern int exitall_on_terminate;
349 extern int thread_number;
352 extern int terse_output;
355 extern char *fio_inst_prefix;
356 extern int temp_stall_ts;
358 extern struct thread_data *threads;
360 #define td_read(td) ((td)->ddir == DDIR_READ)
361 #define td_write(td) ((td)->ddir == DDIR_WRITE)
362 #define td_rw(td) ((td)->iomix != 0)
364 #define BLOCKS_PER_MAP (8 * sizeof(long))
365 #define TO_MAP_BLOCK(td, f, b) ((b) - ((f)->file_offset / (td)->min_bs))
366 #define RAND_MAP_IDX(td, f, b) (TO_MAP_BLOCK(td, f, b) / BLOCKS_PER_MAP)
367 #define RAND_MAP_BIT(td, f, b) (TO_MAP_BLOCK(td, f, b) & (BLOCKS_PER_MAP - 1))
369 #define MAX_JOBS (1024)
371 static inline int should_fsync(struct thread_data *td)
373 if (td->last_was_sync)
377 if (td_write(td) || td_rw(td) || td->override_sync)
383 struct disk_util_stat {
386 unsigned long long sectors[2];
389 unsigned time_in_queue;
393 struct list_head list;
399 struct disk_util_stat dus;
400 struct disk_util_stat last_dus;
406 struct io_completion_data {
409 int error; /* output */
410 unsigned long bytes_done[2]; /* output */
413 #define DISK_UTIL_MSEC (250)
416 #define min(a, b) ((a) < (b) ? (a) : (b))
422 extern int read_iolog_get(struct thread_data *, struct io_u *);
423 extern void write_iolog_put(struct thread_data *, struct io_u *);
424 extern int init_iolog(struct thread_data *td);
425 extern void log_io_piece(struct thread_data *, struct io_u *);
426 extern void prune_io_piece_log(struct thread_data *);
427 extern void write_iolog_close(struct thread_data *);
432 extern void add_clat_sample(struct thread_data *, int, unsigned long);
433 extern void add_slat_sample(struct thread_data *, int, unsigned long);
434 extern void add_bw_sample(struct thread_data *, int);
435 extern void show_run_stats(void);
436 extern void init_disk_util(struct thread_data *);
437 extern void update_rusage_stat(struct thread_data *);
438 extern void update_io_ticks(void);
439 extern void disk_util_timer_arm(void);
440 extern void setup_log(struct io_log **);
441 extern void finish_log(struct thread_data *, struct io_log *, const char *);
442 extern int setup_rate(struct thread_data *);
447 extern void time_init(void);
448 extern unsigned long utime_since(struct timeval *, struct timeval *);
449 extern unsigned long mtime_since(struct timeval *, struct timeval *);
450 extern unsigned long mtime_since_now(struct timeval *);
451 extern unsigned long time_since_now(struct timeval *);
452 extern unsigned long mtime_since_genesis(void);
453 extern void __usec_sleep(unsigned int);
454 extern void usec_sleep(struct thread_data *, unsigned long);
455 extern void rate_throttle(struct thread_data *, unsigned long, unsigned int);
460 extern int parse_options(int, char **);
461 extern int init_random_state(struct thread_data *);
464 * File setup/shutdown
466 extern void close_files(struct thread_data *);
467 extern int setup_files(struct thread_data *);
468 extern int file_invalidate_cache(struct thread_data *, struct fio_file *);
473 extern void print_thread_status(void);
474 extern void print_status_init(int);
477 * Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
478 * will never back again. It may cycle between running/verififying/fsyncing.
479 * Once the thread reaches TD_EXITED, it is just waiting for the core to
496 extern void populate_verify_io_u(struct thread_data *, struct io_u *);
497 extern int get_next_verify(struct thread_data *td, struct io_u *);
498 extern int do_io_u_verify(struct thread_data *, struct io_u **);
503 extern int fio_pin_memory(void);
504 extern void fio_unpin_memory(void);
505 extern int allocate_io_mem(struct thread_data *);
506 extern void free_io_mem(struct thread_data *);
511 #define queue_full(td) list_empty(&(td)->io_u_freelist)
512 extern struct io_u *__get_io_u(struct thread_data *);
513 extern struct io_u *get_io_u(struct thread_data *, struct fio_file *);
514 extern void put_io_u(struct thread_data *, struct io_u *);
515 extern void ios_completed(struct thread_data *, struct io_completion_data *);
516 extern void io_completed(struct thread_data *, struct io_u *, struct io_completion_data *);
519 * io engine entry points
521 extern int td_io_init(struct thread_data *);
522 extern int td_io_prep(struct thread_data *, struct io_u *);
523 extern int td_io_queue(struct thread_data *, struct io_u *);
524 extern int td_io_sync(struct thread_data *, struct fio_file *);
525 extern int td_io_getevents(struct thread_data *, int, int, struct timespec *);
528 * This is a pretty crappy semaphore implementation, but with the use that fio
529 * has (just signalling start/go conditions), it doesn't have to be better.
530 * Naturally this would not work for any type of contended semaphore or
533 static inline void fio_sem_init(volatile int *sem, int val)
538 static inline void fio_sem_down(volatile int *sem)
546 static inline void fio_sem_up(volatile int *sem)
552 * If logging output to a file, stderr should go to both stderr and f_err
554 #define log_err(args...) do { \
555 fprintf(f_err, ##args); \
556 if (f_err != stderr) \
557 fprintf(stderr, ##args); \
560 struct ioengine_ops {
564 int (*setup)(struct thread_data *);
565 int (*init)(struct thread_data *);
566 int (*prep)(struct thread_data *, struct io_u *);
567 int (*queue)(struct thread_data *, struct io_u *);
568 int (*getevents)(struct thread_data *, int, int, struct timespec *);
569 struct io_u *(*event)(struct thread_data *, int);
570 int (*cancel)(struct thread_data *, struct io_u *);
571 void (*cleanup)(struct thread_data *);
576 #define FIO_IOOPS_VERSION 3
578 extern struct ioengine_ops *load_ioengine(struct thread_data *, const char *);
579 extern void close_ioengine(struct thread_data *);
582 * Mark unused variables passed to ops functions as unused, to silence gcc
584 #define fio_unused __attribute((__unused__))
586 #define for_each_td(td, i) \
587 for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++)
588 #define for_each_file(td, f, i) \
589 for ((i) = 0, (f) = &(td)->files[0]; (i) < (int) (td)->nr_files; (i)++, (f)++)