8 #include <sys/resource.h>
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_MMAP, /* use anonynomous mmap */
130 * The type of object we are working on
138 enum fio_ioengine_flags {
147 * A file may not be a file descriptor, let the io engine decide
150 unsigned long file_data;
155 unsigned long long file_size;
156 unsigned long long real_file_size;
157 unsigned long long file_offset;
158 unsigned long long last_pos;
159 unsigned long long last_completed_pos;
161 unsigned long *file_map;
162 unsigned int num_maps;
166 * This describes a single thread/process executing a fio job.
176 enum fio_filetype filetype;
177 struct fio_file *files;
178 unsigned int nr_files;
179 unsigned int nr_uniq_files;
180 unsigned int next_file;
184 size_t orig_buffer_size;
185 volatile int terminate;
186 volatile int runstate;
190 unsigned int last_was_sync;
192 unsigned int sequential;
193 unsigned int odirect;
194 unsigned int invalidate_cache;
195 unsigned int create_serialize;
196 unsigned int create_fsync;
197 unsigned int end_fsync;
198 unsigned int sync_io;
200 unsigned int use_thread;
202 unsigned int do_disk_util;
203 unsigned int override_sync;
204 unsigned int rand_repeatable;
205 unsigned int write_lat_log;
206 unsigned int write_bw_log;
207 unsigned int norandommap;
208 unsigned int bs_unaligned;
211 unsigned int min_bs[2];
212 unsigned int max_bs[2];
213 unsigned int rw_min_bs;
214 unsigned int thinktime;
215 unsigned int fsync_blocks;
216 unsigned int start_delay;
217 unsigned long timeout;
218 unsigned int overwrite;
219 unsigned int bw_avg_time;
221 unsigned long long zone_size;
222 unsigned long long zone_skip;
223 enum fio_memtype mem_type;
224 unsigned int stonewall;
225 unsigned int numjobs;
226 unsigned int iodepth;
227 os_cpu_mask_t cpumask;
229 unsigned int read_iolog;
230 unsigned int rwmixcycle;
231 unsigned int rwmixread;
232 unsigned int rwmixwrite;
235 char *read_iolog_file;
236 char *write_iolog_file;
243 os_random_state_t bsrange_state;
244 os_random_state_t verify_state;
249 * IO engine hooks, contains everything needed to submit an io_u
250 * to any of the available IO engines.
252 struct ioengine_ops *io_ops;
255 * Current IO depth and list of free and busy io_u's.
257 unsigned int cur_depth;
258 struct list_head io_u_freelist;
259 struct list_head io_u_busylist;
265 unsigned int ratemin;
266 unsigned int ratecycle;
267 unsigned long rate_usec_cycle;
268 long rate_pending_usleep;
269 unsigned long rate_bytes;
270 struct timeval lastrate;
272 unsigned long runtime[2]; /* msec */
273 unsigned long long io_size;
274 unsigned long long total_file_size;
275 unsigned long long start_offset;
276 unsigned long long total_io_size;
278 unsigned long long io_blocks[2];
279 unsigned long long io_bytes[2];
280 unsigned long long zone_bytes;
281 unsigned long long this_io_bytes[2];
285 * State for random io, a bitmap of blocks done vs not done
287 os_random_state_t random_state;
290 * CPU "io" cycle burner
292 unsigned int cpuload;
293 unsigned int cpucycle;
296 * bandwidth and latency stats
298 struct io_stat clat_stat[2]; /* completion latency */
299 struct io_stat slat_stat[2]; /* submission latency */
300 struct io_stat bw_stat[2]; /* bandwidth stats */
302 unsigned long long stat_io_bytes[2];
303 struct timeval stat_sample_time[2];
305 struct io_log *slat_log;
306 struct io_log *clat_log;
307 struct io_log *bw_log;
309 struct timeval start; /* start of this loop */
310 struct timeval epoch; /* time job was started */
311 struct timeval end_time;/* time job ended */
314 * fio system usage accounting
316 struct rusage ru_start;
317 struct rusage ru_end;
318 unsigned long usr_time;
319 unsigned long sys_time;
323 * read/write mixed workload state
325 os_random_state_t rwmix_state;
326 struct timeval rwmix_switch;
327 enum fio_ddir rwmix_ddir;
330 * Pre-run and post-run shell
338 struct list_head io_hist_list;
339 struct list_head io_log_list;
342 #define __td_verror(td, err, msg) \
346 snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, error=%s", __FILE__, __LINE__, (msg)); \
350 #define td_verror(td, err) __td_verror((td), (err), strerror((err)))
351 #define td_vmsg(td, err, msg) __td_verror((td), (err), (msg))
353 extern int exitall_on_terminate;
354 extern int thread_number;
357 extern int terse_output;
360 extern int temp_stall_ts;
361 extern unsigned long long mlock_size;
363 extern struct thread_data *threads;
365 #define td_read(td) ((td)->ddir == DDIR_READ)
366 #define td_write(td) ((td)->ddir == DDIR_WRITE)
367 #define td_rw(td) ((td)->iomix != 0)
369 #define BLOCKS_PER_MAP (8 * sizeof(long))
370 #define TO_MAP_BLOCK(td, f, b) ((b) - ((f)->file_offset / (td)->rw_min_bs))
371 #define RAND_MAP_IDX(td, f, b) (TO_MAP_BLOCK(td, f, b) / BLOCKS_PER_MAP)
372 #define RAND_MAP_BIT(td, f, b) (TO_MAP_BLOCK(td, f, b) & (BLOCKS_PER_MAP - 1))
374 #define MAX_JOBS (1024)
376 static inline int should_fsync(struct thread_data *td)
378 if (td->last_was_sync)
382 if (td_write(td) || td_rw(td) || td->override_sync)
388 struct disk_util_stat {
391 unsigned long long sectors[2];
394 unsigned time_in_queue;
398 struct list_head list;
404 struct disk_util_stat dus;
405 struct disk_util_stat last_dus;
411 struct io_completion_data {
414 int error; /* output */
415 unsigned long bytes_done[2]; /* output */
416 struct timeval time; /* output */
419 #define DISK_UTIL_MSEC (250)
422 #define min(a, b) ((a) < (b) ? (a) : (b))
425 #define max(a, b) ((a) > (b) ? (a) : (b))
431 extern int read_iolog_get(struct thread_data *, struct io_u *);
432 extern void write_iolog_put(struct thread_data *, struct io_u *);
433 extern int init_iolog(struct thread_data *td);
434 extern void log_io_piece(struct thread_data *, struct io_u *);
435 extern void prune_io_piece_log(struct thread_data *);
436 extern void write_iolog_close(struct thread_data *);
441 extern void add_clat_sample(struct thread_data *, enum fio_ddir, unsigned long);
442 extern void add_slat_sample(struct thread_data *, enum fio_ddir, unsigned long);
443 extern void add_bw_sample(struct thread_data *, enum fio_ddir, struct timeval *);
444 extern void show_run_stats(void);
445 extern void init_disk_util(struct thread_data *);
446 extern void update_rusage_stat(struct thread_data *);
447 extern void update_io_ticks(void);
448 extern void disk_util_timer_arm(void);
449 extern void setup_log(struct io_log **);
450 extern void finish_log(struct thread_data *, struct io_log *, const char *);
451 extern int setup_rate(struct thread_data *);
456 extern unsigned long utime_since(struct timeval *, struct timeval *);
457 extern unsigned long utime_since_now(struct timeval *);
458 extern unsigned long mtime_since(struct timeval *, struct timeval *);
459 extern unsigned long mtime_since_now(struct timeval *);
460 extern unsigned long time_since_now(struct timeval *);
461 extern unsigned long mtime_since_genesis(void);
462 extern void __usec_sleep(unsigned int);
463 extern void usec_sleep(struct thread_data *, unsigned long);
464 extern void rate_throttle(struct thread_data *, unsigned long, unsigned int, int);
465 extern void fill_start_time(struct timeval *);
466 extern void fio_gettime(struct timeval *, void *);
471 extern int parse_options(int, char **);
472 extern int init_random_state(struct thread_data *);
475 * File setup/shutdown
477 extern void close_files(struct thread_data *);
478 extern int setup_files(struct thread_data *);
479 extern int open_files(struct thread_data *);
480 extern int file_invalidate_cache(struct thread_data *, struct fio_file *);
485 extern void print_thread_status(void);
486 extern void print_status_init(int);
489 * Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
490 * will never back again. It may cycle between running/verififying/fsyncing.
491 * Once the thread reaches TD_EXITED, it is just waiting for the core to
508 extern void populate_verify_io_u(struct thread_data *, struct io_u *);
509 extern int get_next_verify(struct thread_data *td, struct io_u *);
510 extern int do_io_u_verify(struct thread_data *, struct io_u **);
515 extern int fio_pin_memory(void);
516 extern void fio_unpin_memory(void);
517 extern int allocate_io_mem(struct thread_data *);
518 extern void free_io_mem(struct thread_data *);
523 #define queue_full(td) list_empty(&(td)->io_u_freelist)
524 extern struct io_u *__get_io_u(struct thread_data *);
525 extern struct io_u *get_io_u(struct thread_data *, struct fio_file *);
526 extern void put_io_u(struct thread_data *, struct io_u *);
527 extern void ios_completed(struct thread_data *, struct io_completion_data *);
528 extern void io_completed(struct thread_data *, struct io_u *, struct io_completion_data *);
531 * io engine entry points
533 extern int td_io_init(struct thread_data *);
534 extern int td_io_prep(struct thread_data *, struct io_u *);
535 extern int td_io_queue(struct thread_data *, struct io_u *);
536 extern int td_io_sync(struct thread_data *, struct fio_file *);
537 extern int td_io_getevents(struct thread_data *, int, int, struct timespec *);
540 * This is a pretty crappy semaphore implementation, but with the use that fio
541 * has (just signalling start/go conditions), it doesn't have to be better.
542 * Naturally this would not work for any type of contended semaphore or
545 static inline void fio_sem_init(volatile int *sem, int val)
550 static inline void fio_sem_down(volatile int *sem)
558 static inline void fio_sem_up(volatile int *sem)
564 * If logging output to a file, stderr should go to both stderr and f_err
566 #define log_err(args...) do { \
567 fprintf(f_err, ##args); \
568 if (f_err != stderr) \
569 fprintf(stderr, ##args); \
572 struct ioengine_ops {
573 struct list_head list;
577 int (*setup)(struct thread_data *);
578 int (*init)(struct thread_data *);
579 int (*prep)(struct thread_data *, struct io_u *);
580 int (*queue)(struct thread_data *, struct io_u *);
581 int (*getevents)(struct thread_data *, int, int, struct timespec *);
582 struct io_u *(*event)(struct thread_data *, int);
583 int (*cancel)(struct thread_data *, struct io_u *);
584 void (*cleanup)(struct thread_data *);
589 #define FIO_IOOPS_VERSION 3
591 extern struct ioengine_ops *load_ioengine(struct thread_data *, const char *);
592 extern int register_ioengine(struct ioengine_ops *);
593 extern void unregister_ioengine(struct ioengine_ops *);
594 extern void close_ioengine(struct thread_data *);
597 * Mark unused variables passed to ops functions as unused, to silence gcc
599 #define fio_unused __attribute((__unused__))
600 #define fio_init __attribute__((constructor))
601 #define fio_exit __attribute__((destructor))
603 #define for_each_td(td, i) \
604 for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++)
605 #define for_each_file(td, f, i) \
606 for ((i) = 0, (f) = &(td)->files[0]; (i) < (int) (td)->nr_files; (i)++, (f)++)