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;
79 unsigned int xfer_buflen;
87 * io engine private data
94 struct fio_file *file;
96 struct list_head list;
99 #define FIO_HDR_MAGIC 0xf00baaef
107 struct verify_header {
108 unsigned int fio_magic;
110 unsigned int verify_type;
112 char md5_digest[MD5_HASH_WORDS * 4];
117 struct group_run_stats {
118 unsigned long long max_run[2], min_run[2];
119 unsigned long long max_bw[2], min_bw[2];
120 unsigned long long io_kb[2];
121 unsigned long long agg[2];
125 * What type of allocation to use for io buffers
128 MEM_MALLOC = 0, /* ordinary malloc */
129 MEM_SHM, /* use shared memory segments */
130 MEM_SHMHUGE, /* use shared memory segments with huge pages */
131 MEM_MMAP, /* use anonynomous mmap */
132 MEM_MMAPHUGE, /* memory mapped huge file */
136 * The type of object we are working on
144 enum fio_ioengine_flags {
155 * A file may not be a file descriptor, let the io engine decide
158 unsigned long file_data;
163 unsigned long long file_size;
164 unsigned long long real_file_size;
165 unsigned long long file_offset;
166 unsigned long long last_pos;
167 unsigned long long last_completed_pos;
169 unsigned long *file_map;
170 unsigned int num_maps;
174 unsigned int last_free_lookup;
178 * How many depth levels to log
180 #define FIO_IO_U_MAP_NR 8
183 * This describes a single thread/process executing a fio job.
194 enum fio_filetype filetype;
195 struct fio_file *files;
196 unsigned int nr_files;
197 unsigned int nr_uniq_files;
198 unsigned int next_file;
202 size_t orig_buffer_size;
203 volatile int terminate;
204 volatile int runstate;
208 unsigned int last_was_sync;
210 unsigned int sequential;
211 unsigned int odirect;
212 unsigned int invalidate_cache;
213 unsigned int create_serialize;
214 unsigned int create_fsync;
215 unsigned int end_fsync;
216 unsigned int sync_io;
218 unsigned int use_thread;
220 unsigned int do_disk_util;
221 unsigned int override_sync;
222 unsigned int rand_repeatable;
223 unsigned int write_lat_log;
224 unsigned int write_bw_log;
225 unsigned int norandommap;
226 unsigned int bs_unaligned;
229 unsigned int min_bs[2];
230 unsigned int max_bs[2];
231 unsigned int hugepage_size;
232 unsigned int rw_min_bs;
233 unsigned int thinktime;
234 unsigned int thinktime_blocks;
235 unsigned int fsync_blocks;
236 unsigned int start_delay;
237 unsigned long timeout;
238 unsigned int overwrite;
239 unsigned int bw_avg_time;
241 unsigned long long zone_size;
242 unsigned long long zone_skip;
243 enum fio_memtype mem_type;
246 unsigned int stonewall;
247 unsigned int numjobs;
248 unsigned int iodepth;
249 os_cpu_mask_t cpumask;
251 unsigned int read_iolog;
252 unsigned int rwmixcycle;
253 unsigned int rwmixread;
254 unsigned int rwmixwrite;
257 char *read_iolog_file;
258 char *write_iolog_file;
265 os_random_state_t bsrange_state;
266 os_random_state_t verify_state;
271 * IO engine hooks, contains everything needed to submit an io_u
272 * to any of the available IO engines.
274 struct ioengine_ops *io_ops;
277 * Current IO depth and list of free and busy io_u's.
279 unsigned int cur_depth;
280 unsigned int io_u_map[FIO_IO_U_MAP_NR];
281 unsigned long total_io_u;
282 struct list_head io_u_freelist;
283 struct list_head io_u_busylist;
289 unsigned int ratemin;
290 unsigned int ratecycle;
291 unsigned long rate_usec_cycle;
292 long rate_pending_usleep;
293 unsigned long rate_bytes;
294 struct timeval lastrate;
296 unsigned long runtime[2]; /* msec */
297 unsigned long long io_size;
298 unsigned long long total_file_size;
299 unsigned long long start_offset;
300 unsigned long long total_io_size;
302 unsigned long long io_blocks[2];
303 unsigned long long io_bytes[2];
304 unsigned long long zone_bytes;
305 unsigned long long this_io_bytes[2];
309 * State for random io, a bitmap of blocks done vs not done
311 os_random_state_t random_state;
314 * CPU "io" cycle burner
316 unsigned int cpuload;
317 unsigned int cpucycle;
320 * bandwidth and latency stats
322 struct io_stat clat_stat[2]; /* completion latency */
323 struct io_stat slat_stat[2]; /* submission latency */
324 struct io_stat bw_stat[2]; /* bandwidth stats */
326 unsigned long long stat_io_bytes[2];
327 struct timeval stat_sample_time[2];
329 struct io_log *slat_log;
330 struct io_log *clat_log;
331 struct io_log *bw_log;
333 struct timeval start; /* start of this loop */
334 struct timeval epoch; /* time job was started */
335 struct timeval end_time;/* time job ended */
338 * fio system usage accounting
340 struct rusage ru_start;
341 struct rusage ru_end;
342 unsigned long usr_time;
343 unsigned long sys_time;
347 * read/write mixed workload state
349 os_random_state_t rwmix_state;
350 struct timeval rwmix_switch;
351 enum fio_ddir rwmix_ddir;
354 * Pre-run and post-run shell
362 struct list_head io_hist_list;
363 struct list_head io_log_list;
366 #define __td_verror(td, err, msg) \
370 snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, error=%s", __FILE__, __LINE__, (msg)); \
374 #define td_verror(td, err) __td_verror((td), (err), strerror((err)))
375 #define td_vmsg(td, err, msg) __td_verror((td), (err), (msg))
377 extern int exitall_on_terminate;
378 extern int thread_number;
381 extern int terse_output;
384 extern int temp_stall_ts;
385 extern unsigned long long mlock_size;
387 extern struct thread_data *threads;
389 #define td_read(td) ((td)->ddir == DDIR_READ)
390 #define td_write(td) ((td)->ddir == DDIR_WRITE)
391 #define td_rw(td) ((td)->iomix != 0)
393 #define BLOCKS_PER_MAP (8 * sizeof(long))
394 #define TO_MAP_BLOCK(td, f, b) ((b) - ((f)->file_offset / (td)->rw_min_bs))
395 #define RAND_MAP_IDX(td, f, b) (TO_MAP_BLOCK(td, f, b) / BLOCKS_PER_MAP)
396 #define RAND_MAP_BIT(td, f, b) (TO_MAP_BLOCK(td, f, b) & (BLOCKS_PER_MAP - 1))
398 #define MAX_JOBS (1024)
400 static inline int should_fsync(struct thread_data *td)
402 if (td->last_was_sync)
406 if (td_write(td) || td_rw(td) || td->override_sync)
412 struct disk_util_stat {
415 unsigned long long sectors[2];
418 unsigned time_in_queue;
422 struct list_head list;
428 struct disk_util_stat dus;
429 struct disk_util_stat last_dus;
435 struct io_completion_data {
438 int error; /* output */
439 unsigned long bytes_done[2]; /* output */
440 struct timeval time; /* output */
443 #define DISK_UTIL_MSEC (250)
446 #define min(a, b) ((a) < (b) ? (a) : (b))
449 #define max(a, b) ((a) > (b) ? (a) : (b))
455 extern int read_iolog_get(struct thread_data *, struct io_u *);
456 extern void write_iolog_put(struct thread_data *, struct io_u *);
457 extern int init_iolog(struct thread_data *td);
458 extern void log_io_piece(struct thread_data *, struct io_u *);
459 extern void prune_io_piece_log(struct thread_data *);
460 extern void write_iolog_close(struct thread_data *);
465 extern void add_clat_sample(struct thread_data *, enum fio_ddir, unsigned long);
466 extern void add_slat_sample(struct thread_data *, enum fio_ddir, unsigned long);
467 extern void add_bw_sample(struct thread_data *, enum fio_ddir, struct timeval *);
468 extern void show_run_stats(void);
469 extern void init_disk_util(struct thread_data *);
470 extern void update_rusage_stat(struct thread_data *);
471 extern void update_io_ticks(void);
472 extern void disk_util_timer_arm(void);
473 extern void setup_log(struct io_log **);
474 extern void finish_log(struct thread_data *, struct io_log *, const char *);
475 extern void __finish_log(struct io_log *, const char *);
476 extern int setup_rate(struct thread_data *);
477 extern struct io_log *agg_io_log[2];
478 extern int write_bw_log;
479 extern void add_agg_sample(unsigned long, enum fio_ddir);
484 extern unsigned long utime_since(struct timeval *, struct timeval *);
485 extern unsigned long utime_since_now(struct timeval *);
486 extern unsigned long mtime_since(struct timeval *, struct timeval *);
487 extern unsigned long mtime_since_now(struct timeval *);
488 extern unsigned long time_since_now(struct timeval *);
489 extern unsigned long mtime_since_genesis(void);
490 extern void __usec_sleep(unsigned int);
491 extern void usec_sleep(struct thread_data *, unsigned long);
492 extern void rate_throttle(struct thread_data *, unsigned long, unsigned int, int);
493 extern void fill_start_time(struct timeval *);
494 extern void fio_gettime(struct timeval *, void *);
499 extern int parse_options(int, char **);
500 extern int init_random_state(struct thread_data *);
503 * File setup/shutdown
505 extern void close_files(struct thread_data *);
506 extern int setup_files(struct thread_data *);
507 extern int open_files(struct thread_data *);
508 extern int file_invalidate_cache(struct thread_data *, struct fio_file *);
513 extern void print_thread_status(void);
514 extern void print_status_init(int);
517 * Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
518 * will never back again. It may cycle between running/verififying/fsyncing.
519 * Once the thread reaches TD_EXITED, it is just waiting for the core to
536 extern void populate_verify_io_u(struct thread_data *, struct io_u *);
537 extern int get_next_verify(struct thread_data *td, struct io_u *);
538 extern int do_io_u_verify(struct thread_data *, struct io_u **);
543 extern int fio_pin_memory(void);
544 extern void fio_unpin_memory(void);
545 extern int allocate_io_mem(struct thread_data *);
546 extern void free_io_mem(struct thread_data *);
551 #define queue_full(td) list_empty(&(td)->io_u_freelist)
552 extern struct io_u *__get_io_u(struct thread_data *);
553 extern struct io_u *get_io_u(struct thread_data *, struct fio_file *);
554 extern void put_io_u(struct thread_data *, struct io_u *);
555 extern void ios_completed(struct thread_data *, struct io_completion_data *);
556 extern void io_completed(struct thread_data *, struct io_u *, struct io_completion_data *);
559 * io engine entry points
561 extern int td_io_init(struct thread_data *);
562 extern int td_io_prep(struct thread_data *, struct io_u *);
563 extern int td_io_queue(struct thread_data *, struct io_u *);
564 extern int td_io_sync(struct thread_data *, struct fio_file *);
565 extern int td_io_getevents(struct thread_data *, int, int, struct timespec *);
568 * This is a pretty crappy semaphore implementation, but with the use that fio
569 * has (just signalling start/go conditions), it doesn't have to be better.
570 * Naturally this would not work for any type of contended semaphore or
573 static inline void fio_sem_init(volatile int *sem, int val)
578 static inline void fio_sem_down(volatile int *sem)
586 static inline void fio_sem_up(volatile int *sem)
592 * If logging output to a file, stderr should go to both stderr and f_err
594 #define log_err(args...) do { \
595 fprintf(f_err, ##args); \
596 if (f_err != stderr) \
597 fprintf(stderr, ##args); \
600 struct ioengine_ops {
601 struct list_head list;
605 int (*setup)(struct thread_data *);
606 int (*init)(struct thread_data *);
607 int (*prep)(struct thread_data *, struct io_u *);
608 int (*queue)(struct thread_data *, struct io_u *);
609 int (*getevents)(struct thread_data *, int, int, struct timespec *);
610 struct io_u *(*event)(struct thread_data *, int);
611 int (*cancel)(struct thread_data *, struct io_u *);
612 void (*cleanup)(struct thread_data *);
617 #define FIO_IOOPS_VERSION 3
619 extern struct ioengine_ops *load_ioengine(struct thread_data *, const char *);
620 extern int register_ioengine(struct ioengine_ops *);
621 extern void unregister_ioengine(struct ioengine_ops *);
622 extern void close_ioengine(struct thread_data *);
625 * Mark unused variables passed to ops functions as unused, to silence gcc
627 #define fio_unused __attribute((__unused__))
628 #define fio_init __attribute__((constructor))
629 #define fio_exit __attribute__((destructor))
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 for ((i) = 0, (f) = &(td)->files[0]; (i) < (int) (td)->nr_files; (i)++, (f)++)