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];
119 * What type of allocation to use for io buffers
122 MEM_MALLOC = 0, /* ordinary malloc */
123 MEM_SHM, /* use shared memory segments */
124 MEM_MMAP, /* use anonynomous mmap */
128 * The type of object we are working on
136 enum fio_ioengine_flags {
145 * A file may not be a file descriptor, let the io engine decide
148 unsigned long file_data;
153 unsigned long long file_size;
154 unsigned long long real_file_size;
155 unsigned long long file_offset;
156 unsigned long long last_pos;
158 unsigned long *file_map;
159 unsigned int num_maps;
163 * This describes a single thread/process executing a fio job.
173 enum fio_filetype filetype;
174 struct fio_file *files;
175 unsigned int nr_files;
176 unsigned int nr_uniq_files;
177 unsigned int next_file;
181 size_t orig_buffer_size;
182 volatile int terminate;
183 volatile int runstate;
188 unsigned char sequential;
189 unsigned char odirect;
190 unsigned char invalidate_cache;
191 unsigned char create_serialize;
192 unsigned char create_fsync;
193 unsigned char end_fsync;
194 unsigned char sync_io;
195 unsigned char verify;
196 unsigned char use_thread;
197 unsigned char unlink;
198 unsigned char do_disk_util;
199 unsigned char override_sync;
200 unsigned char rand_repeatable;
201 unsigned char write_lat_log;
202 unsigned char write_bw_log;
207 unsigned int thinktime;
208 unsigned int fsync_blocks;
209 unsigned int start_delay;
210 unsigned long timeout;
211 unsigned int overwrite;
212 unsigned int bw_avg_time;
214 unsigned long long zone_size;
215 unsigned long long zone_skip;
216 enum fio_memtype mem_type;
217 unsigned int stonewall;
218 unsigned int numjobs;
219 unsigned int iodepth;
220 os_cpu_mask_t cpumask;
222 unsigned int read_iolog;
223 unsigned int write_iolog;
224 unsigned int rwmixcycle;
225 unsigned int rwmixread;
235 os_random_state_t bsrange_state;
236 os_random_state_t verify_state;
241 * IO engine hooks, contains everything needed to submit an io_u
242 * to any of the available IO engines.
244 struct ioengine_ops *io_ops;
247 * Current IO depth and list of free and busy io_u's.
249 unsigned int cur_depth;
250 struct list_head io_u_freelist;
251 struct list_head io_u_busylist;
257 unsigned int ratemin;
258 unsigned int ratecycle;
259 unsigned long rate_usec_cycle;
260 long rate_pending_usleep;
261 unsigned long rate_bytes;
262 struct timeval lastrate;
264 unsigned long runtime[2]; /* msec */
265 unsigned long long io_size;
266 unsigned long long total_file_size;
267 unsigned long long start_offset;
268 unsigned long long total_io_size;
270 unsigned long long io_blocks[2];
271 unsigned long long io_bytes[2];
272 unsigned long long zone_bytes;
273 unsigned long long this_io_bytes[2];
277 * State for random io, a bitmap of blocks done vs not done
279 os_random_state_t random_state;
282 * CPU "io" cycle burner
284 unsigned int cpuload;
285 unsigned int cpucycle;
288 * bandwidth and latency stats
290 struct io_stat clat_stat[2]; /* completion latency */
291 struct io_stat slat_stat[2]; /* submission latency */
292 struct io_stat bw_stat[2]; /* bandwidth stats */
294 unsigned long long stat_io_bytes[2];
295 struct timeval stat_sample_time[2];
297 struct io_log *slat_log;
298 struct io_log *clat_log;
299 struct io_log *bw_log;
301 struct timeval start; /* start of this loop */
302 struct timeval epoch; /* time job was started */
305 * fio system usage accounting
307 struct rusage ru_start;
308 struct rusage ru_end;
309 unsigned long usr_time;
310 unsigned long sys_time;
314 * read/write mixed workload state
316 os_random_state_t rwmix_state;
317 struct timeval rwmix_switch;
318 enum fio_ddir rwmix_ddir;
321 * Pre-run and post-run shell
329 struct list_head io_hist_list;
330 struct list_head io_log_list;
333 #define __td_verror(td, err, msg) \
337 snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, error=%s", __FILE__, __LINE__, (msg)); \
341 #define td_verror(td, err) __td_verror((td), (err), strerror((err)))
342 #define td_vmsg(td, err, msg) __td_verror((td), (err), (msg))
344 extern int rate_quit;
345 extern int exitall_on_terminate;
346 extern int thread_number;
349 extern int terse_output;
352 extern char *fio_inst_prefix;
353 extern int temp_stall_ts;
355 extern struct thread_data *threads;
357 #define td_read(td) ((td)->ddir == DDIR_READ)
358 #define td_write(td) ((td)->ddir == DDIR_WRITE)
359 #define td_rw(td) ((td)->iomix != 0)
361 #define BLOCKS_PER_MAP (8 * sizeof(long))
362 #define TO_MAP_BLOCK(td, f, b) ((b) - ((f)->file_offset / (td)->min_bs))
363 #define RAND_MAP_IDX(td, f, b) (TO_MAP_BLOCK(td, f, b) / BLOCKS_PER_MAP)
364 #define RAND_MAP_BIT(td, f, b) (TO_MAP_BLOCK(td, f, b) & (BLOCKS_PER_MAP - 1))
366 #define MAX_JOBS (1024)
368 struct disk_util_stat {
371 unsigned long long sectors[2];
374 unsigned time_in_queue;
378 struct list_head list;
384 struct disk_util_stat dus;
385 struct disk_util_stat last_dus;
391 struct io_completion_data {
394 int error; /* output */
395 unsigned long bytes_done[2]; /* output */
398 #define DISK_UTIL_MSEC (250)
401 #define min(a, b) ((a) < (b) ? (a) : (b))
407 extern int read_iolog_get(struct thread_data *, struct io_u *);
408 extern void write_iolog_put(struct thread_data *, struct io_u *);
409 extern int init_iolog(struct thread_data *td);
410 extern void log_io_piece(struct thread_data *, struct io_u *);
411 extern void prune_io_piece_log(struct thread_data *);
412 extern void write_iolog_close(struct thread_data *);
417 extern void add_clat_sample(struct thread_data *, int, unsigned long);
418 extern void add_slat_sample(struct thread_data *, int, unsigned long);
419 extern void add_bw_sample(struct thread_data *, int);
420 extern void show_run_stats(void);
421 extern void init_disk_util(struct thread_data *);
422 extern void update_rusage_stat(struct thread_data *);
423 extern void update_io_ticks(void);
424 extern void disk_util_timer_arm(void);
425 extern void setup_log(struct io_log **);
426 extern void finish_log(struct thread_data *, struct io_log *, const char *);
427 extern int setup_rate(struct thread_data *);
432 extern void time_init(void);
433 extern unsigned long utime_since(struct timeval *, struct timeval *);
434 extern unsigned long mtime_since(struct timeval *, struct timeval *);
435 extern unsigned long mtime_since_now(struct timeval *);
436 extern unsigned long time_since_now(struct timeval *);
437 extern unsigned long mtime_since_genesis(void);
438 extern void __usec_sleep(unsigned int);
439 extern void usec_sleep(struct thread_data *, unsigned long);
440 extern void rate_throttle(struct thread_data *, unsigned long, unsigned int);
445 extern int parse_options(int, char **);
446 extern int init_random_state(struct thread_data *);
449 * File setup/shutdown
451 extern void close_files(struct thread_data *);
452 extern int setup_files(struct thread_data *);
453 extern int file_invalidate_cache(struct thread_data *, struct fio_file *);
458 extern void print_thread_status(void);
459 extern void print_status_init(int);
462 * Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
463 * will never back again. It may cycle between running/verififying/fsyncing.
464 * Once the thread reaches TD_EXITED, it is just waiting for the core to
481 extern void populate_verify_io_u(struct thread_data *, struct io_u *);
482 extern int get_next_verify(struct thread_data *td, struct io_u *);
483 extern int do_io_u_verify(struct thread_data *, struct io_u **);
488 extern int fio_pin_memory(void);
489 extern void fio_unpin_memory(void);
490 extern int allocate_io_mem(struct thread_data *);
491 extern void free_io_mem(struct thread_data *);
496 #define queue_full(td) list_empty(&(td)->io_u_freelist)
497 extern struct io_u *__get_io_u(struct thread_data *);
498 extern struct io_u *get_io_u(struct thread_data *, struct fio_file *);
499 extern void put_io_u(struct thread_data *, struct io_u *);
500 extern void ios_completed(struct thread_data *, struct io_completion_data *);
501 extern void io_completed(struct thread_data *, struct io_u *, struct io_completion_data *);
504 * io engine entry points
506 extern int td_io_init(struct thread_data *);
507 extern int td_io_prep(struct thread_data *, struct io_u *);
508 extern int td_io_queue(struct thread_data *, struct io_u *);
509 extern int td_io_sync(struct thread_data *, struct fio_file *);
510 extern int td_io_getevents(struct thread_data *, int, int, struct timespec *);
513 * This is a pretty crappy semaphore implementation, but with the use that fio
514 * has (just signalling start/go conditions), it doesn't have to be better.
515 * Naturally this would not work for any type of contended semaphore or
518 static inline void fio_sem_init(volatile int *sem, int val)
523 static inline void fio_sem_down(volatile int *sem)
531 static inline void fio_sem_up(volatile int *sem)
537 * If logging output to a file, stderr should go to both stderr and f_err
539 #define log_err(args...) do { \
540 fprintf(f_err, ##args); \
541 if (f_err != stderr) \
542 fprintf(stderr, ##args); \
545 struct ioengine_ops {
549 int (*setup)(struct thread_data *);
550 int (*init)(struct thread_data *);
551 int (*prep)(struct thread_data *, struct io_u *);
552 int (*queue)(struct thread_data *, struct io_u *);
553 int (*getevents)(struct thread_data *, int, int, struct timespec *);
554 struct io_u *(*event)(struct thread_data *, int);
555 int (*cancel)(struct thread_data *, struct io_u *);
556 void (*cleanup)(struct thread_data *);
557 int (*sync)(struct thread_data *, struct fio_file *);
562 #define FIO_IOOPS_VERSION 2
564 extern struct ioengine_ops *load_ioengine(struct thread_data *, char *);
565 extern void close_ioengine(struct thread_data *);
568 * Mark unused variables passed to ops functions as unused, to silence gcc
570 #define fio_unused __attribute((__unused__))
572 #define for_each_td(td, i) \
573 for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++)
574 #define for_each_file(td, f, i) \
575 for ((i) = 0, (f) = &(td)->files[0]; (i) < (int) (td)->nr_files; (i)++, (f)++)