8 #include <sys/resource.h>
24 unsigned long max_val;
25 unsigned long min_val;
26 unsigned long samples;
36 unsigned long nr_samples;
37 unsigned long max_samples;
38 struct io_sample *log;
42 struct list_head list;
43 struct fio_file *file;
44 unsigned long long offset;
54 #ifdef FIO_HAVE_LIBAIO
57 #ifdef FIO_HAVE_POSIXAIO
64 struct timeval start_time;
65 struct timeval issue_time;
69 unsigned long long offset;
77 * io engine private data
84 struct fio_file *file;
86 struct list_head list;
89 #define FIO_HDR_MAGIC 0xf00baaef
97 struct verify_header {
98 unsigned int fio_magic;
100 unsigned int verify_type;
102 char md5_digest[MD5_HASH_WORDS * 4];
107 struct group_run_stats {
108 unsigned long long max_run[2], min_run[2];
109 unsigned long long max_bw[2], min_bw[2];
110 unsigned long long io_kb[2];
111 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;
160 unsigned long *file_map;
161 unsigned int num_maps;
165 * This describes a single thread/process executing a fio job.
175 enum fio_filetype filetype;
176 struct fio_file *files;
177 unsigned int nr_files;
178 unsigned int nr_uniq_files;
179 unsigned int next_file;
183 size_t orig_buffer_size;
184 volatile int terminate;
185 volatile int runstate;
189 unsigned int last_was_sync;
191 unsigned int sequential;
192 unsigned int odirect;
193 unsigned int invalidate_cache;
194 unsigned int create_serialize;
195 unsigned int create_fsync;
196 unsigned int end_fsync;
197 unsigned int sync_io;
199 unsigned int use_thread;
201 unsigned int do_disk_util;
202 unsigned int override_sync;
203 unsigned int rand_repeatable;
204 unsigned int write_lat_log;
205 unsigned int write_bw_log;
206 unsigned int norandommap;
207 unsigned int bs_unaligned;
210 unsigned int min_bs[2];
211 unsigned int max_bs[2];
212 unsigned int rw_min_bs;
213 unsigned int thinktime;
214 unsigned int fsync_blocks;
215 unsigned int start_delay;
216 unsigned long timeout;
217 unsigned int overwrite;
218 unsigned int bw_avg_time;
220 unsigned long long zone_size;
221 unsigned long long zone_skip;
222 enum fio_memtype mem_type;
223 unsigned int stonewall;
224 unsigned int numjobs;
225 unsigned int iodepth;
226 os_cpu_mask_t cpumask;
228 unsigned int read_iolog;
229 unsigned int rwmixcycle;
230 unsigned int rwmixread;
231 unsigned int rwmixwrite;
234 char *read_iolog_file;
235 char *write_iolog_file;
242 os_random_state_t bsrange_state;
243 os_random_state_t verify_state;
248 * IO engine hooks, contains everything needed to submit an io_u
249 * to any of the available IO engines.
251 struct ioengine_ops *io_ops;
254 * Current IO depth and list of free and busy io_u's.
256 unsigned int cur_depth;
257 struct list_head io_u_freelist;
258 struct list_head io_u_busylist;
264 unsigned int ratemin;
265 unsigned int ratecycle;
266 unsigned long rate_usec_cycle;
267 long rate_pending_usleep;
268 unsigned long rate_bytes;
269 struct timeval lastrate;
271 unsigned long runtime[2]; /* msec */
272 unsigned long long io_size;
273 unsigned long long total_file_size;
274 unsigned long long start_offset;
275 unsigned long long total_io_size;
277 unsigned long long io_blocks[2];
278 unsigned long long io_bytes[2];
279 unsigned long long zone_bytes;
280 unsigned long long this_io_bytes[2];
284 * State for random io, a bitmap of blocks done vs not done
286 os_random_state_t random_state;
289 * CPU "io" cycle burner
291 unsigned int cpuload;
292 unsigned int cpucycle;
295 * bandwidth and latency stats
297 struct io_stat clat_stat[2]; /* completion latency */
298 struct io_stat slat_stat[2]; /* submission latency */
299 struct io_stat bw_stat[2]; /* bandwidth stats */
301 unsigned long long stat_io_bytes[2];
302 struct timeval stat_sample_time[2];
304 struct io_log *slat_log;
305 struct io_log *clat_log;
306 struct io_log *bw_log;
308 struct timeval start; /* start of this loop */
309 struct timeval epoch; /* time job was started */
312 * fio system usage accounting
314 struct rusage ru_start;
315 struct rusage ru_end;
316 unsigned long usr_time;
317 unsigned long sys_time;
321 * read/write mixed workload state
323 os_random_state_t rwmix_state;
324 struct timeval rwmix_switch;
325 enum fio_ddir rwmix_ddir;
328 * Pre-run and post-run shell
336 struct list_head io_hist_list;
337 struct list_head io_log_list;
340 #define __td_verror(td, err, msg) \
344 snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, error=%s", __FILE__, __LINE__, (msg)); \
348 #define td_verror(td, err) __td_verror((td), (err), strerror((err)))
349 #define td_vmsg(td, err, msg) __td_verror((td), (err), (msg))
351 extern int exitall_on_terminate;
352 extern int thread_number;
355 extern int terse_output;
358 extern const char *fio_inst_prefix;
359 extern int temp_stall_ts;
361 extern struct thread_data *threads;
363 #define td_read(td) ((td)->ddir == DDIR_READ)
364 #define td_write(td) ((td)->ddir == DDIR_WRITE)
365 #define td_rw(td) ((td)->iomix != 0)
367 #define BLOCKS_PER_MAP (8 * sizeof(long))
368 #define TO_MAP_BLOCK(td, f, b) ((b) - ((f)->file_offset / (td)->rw_min_bs))
369 #define RAND_MAP_IDX(td, f, b) (TO_MAP_BLOCK(td, f, b) / BLOCKS_PER_MAP)
370 #define RAND_MAP_BIT(td, f, b) (TO_MAP_BLOCK(td, f, b) & (BLOCKS_PER_MAP - 1))
372 #define MAX_JOBS (1024)
374 static inline int should_fsync(struct thread_data *td)
376 if (td->last_was_sync)
380 if (td_write(td) || td_rw(td) || td->override_sync)
386 struct disk_util_stat {
389 unsigned long long sectors[2];
392 unsigned time_in_queue;
396 struct list_head list;
402 struct disk_util_stat dus;
403 struct disk_util_stat last_dus;
409 struct io_completion_data {
412 int error; /* output */
413 unsigned long bytes_done[2]; /* output */
416 #define DISK_UTIL_MSEC (250)
419 #define min(a, b) ((a) < (b) ? (a) : (b))
422 #define max(a, b) ((a) > (b) ? (a) : (b))
428 extern int read_iolog_get(struct thread_data *, struct io_u *);
429 extern void write_iolog_put(struct thread_data *, struct io_u *);
430 extern int init_iolog(struct thread_data *td);
431 extern void log_io_piece(struct thread_data *, struct io_u *);
432 extern void prune_io_piece_log(struct thread_data *);
433 extern void write_iolog_close(struct thread_data *);
438 extern void add_clat_sample(struct thread_data *, int, unsigned long);
439 extern void add_slat_sample(struct thread_data *, int, unsigned long);
440 extern void add_bw_sample(struct thread_data *, int);
441 extern void show_run_stats(void);
442 extern void init_disk_util(struct thread_data *);
443 extern void update_rusage_stat(struct thread_data *);
444 extern void update_io_ticks(void);
445 extern void disk_util_timer_arm(void);
446 extern void setup_log(struct io_log **);
447 extern void finish_log(struct thread_data *, struct io_log *, const char *);
448 extern int setup_rate(struct thread_data *);
453 extern void time_init(void);
454 extern unsigned long utime_since(struct timeval *, struct timeval *);
455 extern unsigned long mtime_since(struct timeval *, struct timeval *);
456 extern unsigned long mtime_since_now(struct timeval *);
457 extern unsigned long time_since_now(struct timeval *);
458 extern unsigned long mtime_since_genesis(void);
459 extern void __usec_sleep(unsigned int);
460 extern void usec_sleep(struct thread_data *, unsigned long);
461 extern void rate_throttle(struct thread_data *, unsigned long, unsigned int, int);
462 extern void fill_start_time(struct timeval *);
467 extern int parse_options(int, char **);
468 extern int init_random_state(struct thread_data *);
471 * File setup/shutdown
473 extern void close_files(struct thread_data *);
474 extern int setup_files(struct thread_data *);
475 extern int file_invalidate_cache(struct thread_data *, struct fio_file *);
480 extern void print_thread_status(void);
481 extern void print_status_init(int);
484 * Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
485 * will never back again. It may cycle between running/verififying/fsyncing.
486 * Once the thread reaches TD_EXITED, it is just waiting for the core to
503 extern void populate_verify_io_u(struct thread_data *, struct io_u *);
504 extern int get_next_verify(struct thread_data *td, struct io_u *);
505 extern int do_io_u_verify(struct thread_data *, struct io_u **);
510 extern int fio_pin_memory(void);
511 extern void fio_unpin_memory(void);
512 extern int allocate_io_mem(struct thread_data *);
513 extern void free_io_mem(struct thread_data *);
518 #define queue_full(td) list_empty(&(td)->io_u_freelist)
519 extern struct io_u *__get_io_u(struct thread_data *);
520 extern struct io_u *get_io_u(struct thread_data *, struct fio_file *);
521 extern void put_io_u(struct thread_data *, struct io_u *);
522 extern void ios_completed(struct thread_data *, struct io_completion_data *);
523 extern void io_completed(struct thread_data *, struct io_u *, struct io_completion_data *);
526 * io engine entry points
528 extern int td_io_init(struct thread_data *);
529 extern int td_io_prep(struct thread_data *, struct io_u *);
530 extern int td_io_queue(struct thread_data *, struct io_u *);
531 extern int td_io_sync(struct thread_data *, struct fio_file *);
532 extern int td_io_getevents(struct thread_data *, int, int, struct timespec *);
535 * This is a pretty crappy semaphore implementation, but with the use that fio
536 * has (just signalling start/go conditions), it doesn't have to be better.
537 * Naturally this would not work for any type of contended semaphore or
540 static inline void fio_sem_init(volatile int *sem, int val)
545 static inline void fio_sem_down(volatile int *sem)
553 static inline void fio_sem_up(volatile int *sem)
559 * If logging output to a file, stderr should go to both stderr and f_err
561 #define log_err(args...) do { \
562 fprintf(f_err, ##args); \
563 if (f_err != stderr) \
564 fprintf(stderr, ##args); \
567 struct ioengine_ops {
568 struct list_head list;
572 int (*setup)(struct thread_data *);
573 int (*init)(struct thread_data *);
574 int (*prep)(struct thread_data *, struct io_u *);
575 int (*queue)(struct thread_data *, struct io_u *);
576 int (*getevents)(struct thread_data *, int, int, struct timespec *);
577 struct io_u *(*event)(struct thread_data *, int);
578 int (*cancel)(struct thread_data *, struct io_u *);
579 void (*cleanup)(struct thread_data *);
584 #define FIO_IOOPS_VERSION 3
586 extern struct ioengine_ops *load_ioengine(struct thread_data *, const char *);
587 extern int register_ioengine(struct ioengine_ops *);
588 extern void unregister_ioengine(struct ioengine_ops *);
589 extern void close_ioengine(struct thread_data *);
592 * Mark unused variables passed to ops functions as unused, to silence gcc
594 #define fio_unused __attribute((__unused__))
595 #define fio_init __attribute__((constructor))
596 #define fio_exit __attribute__((destructor))
598 #define for_each_td(td, i) \
599 for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++)
600 #define for_each_file(td, f, i) \
601 for ((i) = 0, (f) = &(td)->files[0]; (i) < (int) (td)->nr_files; (i)++, (f)++)