8 #include <sys/resource.h>
28 unsigned long max_val;
29 unsigned long min_val;
30 unsigned long samples;
43 unsigned long nr_samples;
44 unsigned long max_samples;
45 struct io_sample *log;
49 struct list_head list;
50 struct fio_file *file;
51 unsigned long long offset;
61 #ifdef FIO_HAVE_LIBAIO
64 #ifdef FIO_HAVE_POSIXAIO
71 struct timeval start_time;
72 struct timeval issue_time;
76 unsigned long long offset;
84 * io engine private data
91 struct fio_file *file;
93 struct list_head list;
96 #define FIO_HDR_MAGIC 0xf00baaef
104 struct verify_header {
105 unsigned int fio_magic;
107 unsigned int verify_type;
109 char md5_digest[MD5_HASH_WORDS * 4];
114 struct group_run_stats {
115 unsigned long long max_run[2], min_run[2];
116 unsigned long long max_bw[2], min_bw[2];
117 unsigned long long io_kb[2];
118 unsigned long long agg[2];
122 * What type of allocation to use for io buffers
125 MEM_MALLOC = 0, /* ordinary malloc */
126 MEM_SHM, /* use shared memory segments */
127 MEM_SHMHUGE, /* use shared memory segments with huge pages */
128 MEM_MMAP, /* use anonynomous mmap */
129 MEM_MMAPHUGE, /* memory mapped huge file */
133 * The type of object we are working on
141 enum fio_ioengine_flags {
150 * A file may not be a file descriptor, let the io engine decide
153 unsigned long file_data;
158 unsigned long long file_size;
159 unsigned long long real_file_size;
160 unsigned long long file_offset;
161 unsigned long long last_pos;
162 unsigned long long last_completed_pos;
164 unsigned long *file_map;
165 unsigned int num_maps;
171 * How many depth levels to log
173 #define FIO_IO_U_MAP_NR 8
176 * This describes a single thread/process executing a fio job.
187 enum fio_filetype filetype;
188 struct fio_file *files;
189 unsigned int nr_files;
190 unsigned int nr_uniq_files;
191 unsigned int next_file;
195 size_t orig_buffer_size;
196 volatile int terminate;
197 volatile int runstate;
201 unsigned int last_was_sync;
203 unsigned int sequential;
204 unsigned int odirect;
205 unsigned int invalidate_cache;
206 unsigned int create_serialize;
207 unsigned int create_fsync;
208 unsigned int end_fsync;
209 unsigned int sync_io;
211 unsigned int use_thread;
213 unsigned int do_disk_util;
214 unsigned int override_sync;
215 unsigned int rand_repeatable;
216 unsigned int write_lat_log;
217 unsigned int write_bw_log;
218 unsigned int norandommap;
219 unsigned int bs_unaligned;
222 unsigned int min_bs[2];
223 unsigned int max_bs[2];
224 unsigned int hugepage_size;
225 unsigned int rw_min_bs;
226 unsigned int thinktime;
227 unsigned int thinktime_blocks;
228 unsigned int fsync_blocks;
229 unsigned int start_delay;
230 unsigned long timeout;
231 unsigned int overwrite;
232 unsigned int bw_avg_time;
234 unsigned long long zone_size;
235 unsigned long long zone_skip;
236 enum fio_memtype mem_type;
239 unsigned int stonewall;
240 unsigned int numjobs;
241 unsigned int iodepth;
242 os_cpu_mask_t cpumask;
244 unsigned int read_iolog;
245 unsigned int rwmixcycle;
246 unsigned int rwmixread;
247 unsigned int rwmixwrite;
250 char *read_iolog_file;
251 char *write_iolog_file;
258 os_random_state_t bsrange_state;
259 os_random_state_t verify_state;
264 * IO engine hooks, contains everything needed to submit an io_u
265 * to any of the available IO engines.
267 struct ioengine_ops *io_ops;
270 * Current IO depth and list of free and busy io_u's.
272 unsigned int cur_depth;
273 unsigned int io_u_map[FIO_IO_U_MAP_NR];
274 unsigned long total_io_u;
275 struct list_head io_u_freelist;
276 struct list_head io_u_busylist;
282 unsigned int ratemin;
283 unsigned int ratecycle;
284 unsigned long rate_usec_cycle;
285 long rate_pending_usleep;
286 unsigned long rate_bytes;
287 struct timeval lastrate;
289 unsigned long runtime[2]; /* msec */
290 unsigned long long io_size;
291 unsigned long long total_file_size;
292 unsigned long long start_offset;
293 unsigned long long total_io_size;
295 unsigned long long io_blocks[2];
296 unsigned long long io_bytes[2];
297 unsigned long long zone_bytes;
298 unsigned long long this_io_bytes[2];
302 * State for random io, a bitmap of blocks done vs not done
304 os_random_state_t random_state;
307 * CPU "io" cycle burner
309 unsigned int cpuload;
310 unsigned int cpucycle;
313 * bandwidth and latency stats
315 struct io_stat clat_stat[2]; /* completion latency */
316 struct io_stat slat_stat[2]; /* submission latency */
317 struct io_stat bw_stat[2]; /* bandwidth stats */
319 unsigned long long stat_io_bytes[2];
320 struct timeval stat_sample_time[2];
322 struct io_log *slat_log;
323 struct io_log *clat_log;
324 struct io_log *bw_log;
326 struct timeval start; /* start of this loop */
327 struct timeval epoch; /* time job was started */
328 struct timeval end_time;/* time job ended */
331 * fio system usage accounting
333 struct rusage ru_start;
334 struct rusage ru_end;
335 unsigned long usr_time;
336 unsigned long sys_time;
340 * read/write mixed workload state
342 os_random_state_t rwmix_state;
343 struct timeval rwmix_switch;
344 enum fio_ddir rwmix_ddir;
347 * Pre-run and post-run shell
355 struct list_head io_hist_list;
356 struct list_head io_log_list;
359 #define __td_verror(td, err, msg) \
363 snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, error=%s", __FILE__, __LINE__, (msg)); \
367 #define td_verror(td, err) __td_verror((td), (err), strerror((err)))
368 #define td_vmsg(td, err, msg) __td_verror((td), (err), (msg))
370 extern int exitall_on_terminate;
371 extern int thread_number;
374 extern int terse_output;
377 extern int temp_stall_ts;
378 extern unsigned long long mlock_size;
380 extern struct thread_data *threads;
382 #define td_read(td) ((td)->ddir == DDIR_READ)
383 #define td_write(td) ((td)->ddir == DDIR_WRITE)
384 #define td_rw(td) ((td)->iomix != 0)
386 #define BLOCKS_PER_MAP (8 * sizeof(long))
387 #define TO_MAP_BLOCK(td, f, b) ((b) - ((f)->file_offset / (td)->rw_min_bs))
388 #define RAND_MAP_IDX(td, f, b) (TO_MAP_BLOCK(td, f, b) / BLOCKS_PER_MAP)
389 #define RAND_MAP_BIT(td, f, b) (TO_MAP_BLOCK(td, f, b) & (BLOCKS_PER_MAP - 1))
391 #define MAX_JOBS (1024)
393 static inline int should_fsync(struct thread_data *td)
395 if (td->last_was_sync)
399 if (td_write(td) || td_rw(td) || td->override_sync)
405 struct disk_util_stat {
408 unsigned long long sectors[2];
411 unsigned time_in_queue;
415 struct list_head list;
421 struct disk_util_stat dus;
422 struct disk_util_stat last_dus;
428 struct io_completion_data {
431 int error; /* output */
432 unsigned long bytes_done[2]; /* output */
433 struct timeval time; /* output */
436 #define DISK_UTIL_MSEC (250)
439 #define min(a, b) ((a) < (b) ? (a) : (b))
442 #define max(a, b) ((a) > (b) ? (a) : (b))
448 extern int read_iolog_get(struct thread_data *, struct io_u *);
449 extern void write_iolog_put(struct thread_data *, struct io_u *);
450 extern int init_iolog(struct thread_data *td);
451 extern void log_io_piece(struct thread_data *, struct io_u *);
452 extern void prune_io_piece_log(struct thread_data *);
453 extern void write_iolog_close(struct thread_data *);
458 extern void add_clat_sample(struct thread_data *, enum fio_ddir, unsigned long);
459 extern void add_slat_sample(struct thread_data *, enum fio_ddir, unsigned long);
460 extern void add_bw_sample(struct thread_data *, enum fio_ddir, struct timeval *);
461 extern void show_run_stats(void);
462 extern void init_disk_util(struct thread_data *);
463 extern void update_rusage_stat(struct thread_data *);
464 extern void update_io_ticks(void);
465 extern void disk_util_timer_arm(void);
466 extern void setup_log(struct io_log **);
467 extern void finish_log(struct thread_data *, struct io_log *, const char *);
468 extern void __finish_log(struct io_log *, const char *);
469 extern int setup_rate(struct thread_data *);
470 extern struct io_log *agg_io_log[2];
471 extern int write_bw_log;
472 extern void add_agg_sample(unsigned long, enum fio_ddir);
477 extern unsigned long utime_since(struct timeval *, struct timeval *);
478 extern unsigned long utime_since_now(struct timeval *);
479 extern unsigned long mtime_since(struct timeval *, struct timeval *);
480 extern unsigned long mtime_since_now(struct timeval *);
481 extern unsigned long time_since_now(struct timeval *);
482 extern unsigned long mtime_since_genesis(void);
483 extern void __usec_sleep(unsigned int);
484 extern void usec_sleep(struct thread_data *, unsigned long);
485 extern void rate_throttle(struct thread_data *, unsigned long, unsigned int, int);
486 extern void fill_start_time(struct timeval *);
487 extern void fio_gettime(struct timeval *, void *);
492 extern int parse_options(int, char **);
493 extern int init_random_state(struct thread_data *);
496 * File setup/shutdown
498 extern void close_files(struct thread_data *);
499 extern int setup_files(struct thread_data *);
500 extern int open_files(struct thread_data *);
501 extern int file_invalidate_cache(struct thread_data *, struct fio_file *);
506 extern void print_thread_status(void);
507 extern void print_status_init(int);
510 * Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
511 * will never back again. It may cycle between running/verififying/fsyncing.
512 * Once the thread reaches TD_EXITED, it is just waiting for the core to
529 extern void populate_verify_io_u(struct thread_data *, struct io_u *);
530 extern int get_next_verify(struct thread_data *td, struct io_u *);
531 extern int do_io_u_verify(struct thread_data *, struct io_u **);
536 extern int fio_pin_memory(void);
537 extern void fio_unpin_memory(void);
538 extern int allocate_io_mem(struct thread_data *);
539 extern void free_io_mem(struct thread_data *);
544 #define queue_full(td) list_empty(&(td)->io_u_freelist)
545 extern struct io_u *__get_io_u(struct thread_data *);
546 extern struct io_u *get_io_u(struct thread_data *, struct fio_file *);
547 extern void put_io_u(struct thread_data *, struct io_u *);
548 extern void ios_completed(struct thread_data *, struct io_completion_data *);
549 extern void io_completed(struct thread_data *, struct io_u *, struct io_completion_data *);
552 * io engine entry points
554 extern int td_io_init(struct thread_data *);
555 extern int td_io_prep(struct thread_data *, struct io_u *);
556 extern int td_io_queue(struct thread_data *, struct io_u *);
557 extern int td_io_sync(struct thread_data *, struct fio_file *);
558 extern int td_io_getevents(struct thread_data *, int, int, struct timespec *);
561 * This is a pretty crappy semaphore implementation, but with the use that fio
562 * has (just signalling start/go conditions), it doesn't have to be better.
563 * Naturally this would not work for any type of contended semaphore or
566 static inline void fio_sem_init(volatile int *sem, int val)
571 static inline void fio_sem_down(volatile int *sem)
579 static inline void fio_sem_up(volatile int *sem)
585 * If logging output to a file, stderr should go to both stderr and f_err
587 #define log_err(args...) do { \
588 fprintf(f_err, ##args); \
589 if (f_err != stderr) \
590 fprintf(stderr, ##args); \
593 struct ioengine_ops {
594 struct list_head list;
598 int (*setup)(struct thread_data *);
599 int (*init)(struct thread_data *);
600 int (*prep)(struct thread_data *, struct io_u *);
601 int (*queue)(struct thread_data *, struct io_u *);
602 int (*getevents)(struct thread_data *, int, int, struct timespec *);
603 struct io_u *(*event)(struct thread_data *, int);
604 int (*cancel)(struct thread_data *, struct io_u *);
605 void (*cleanup)(struct thread_data *);
610 #define FIO_IOOPS_VERSION 3
612 extern struct ioengine_ops *load_ioengine(struct thread_data *, const char *);
613 extern int register_ioengine(struct ioengine_ops *);
614 extern void unregister_ioengine(struct ioengine_ops *);
615 extern void close_ioengine(struct thread_data *);
618 * Mark unused variables passed to ops functions as unused, to silence gcc
620 #define fio_unused __attribute((__unused__))
621 #define fio_init __attribute__((constructor))
622 #define fio_exit __attribute__((destructor))
624 #define for_each_td(td, i) \
625 for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++)
626 #define for_each_file(td, f, i) \
627 for ((i) = 0, (f) = &(td)->files[0]; (i) < (int) (td)->nr_files; (i)++, (f)++)