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;
77 struct fio_file *file;
79 struct list_head list;
82 #define FIO_HDR_MAGIC 0xf00baaef
90 struct verify_header {
91 unsigned int fio_magic;
93 unsigned int verify_type;
95 char md5_digest[MD5_HASH_WORDS * 4];
100 struct group_run_stats {
101 unsigned long long max_run[2], min_run[2];
102 unsigned long long max_bw[2], min_bw[2];
103 unsigned long long io_kb[2];
104 unsigned long long agg[2];
113 * What type of allocation to use for io buffers
116 MEM_MALLOC = 0, /* ordinary malloc */
117 MEM_SHM, /* use shared memory segments */
118 MEM_MMAP, /* use anonynomous mmap */
122 * The type of object we are working on
130 enum fio_ioengine_flags {
139 * A file may not be a file descriptor, let the io engine decide
142 unsigned long file_data;
147 unsigned long long file_size;
148 unsigned long long real_file_size;
149 unsigned long long file_offset;
150 unsigned long long last_pos;
152 unsigned long *file_map;
153 unsigned int num_maps;
159 * This describes a single thread/process executing a fio job.
168 enum fio_filetype filetype;
169 struct fio_file *files;
170 unsigned int nr_files;
171 unsigned int next_file;
175 size_t orig_buffer_size;
176 volatile int terminate;
177 volatile int runstate;
182 unsigned char sequential;
183 unsigned char odirect;
184 unsigned char invalidate_cache;
185 unsigned char create_serialize;
186 unsigned char create_fsync;
187 unsigned char end_fsync;
188 unsigned char sync_io;
189 unsigned char verify;
190 unsigned char use_thread;
191 unsigned char unlink;
192 unsigned char do_disk_util;
193 unsigned char override_sync;
194 unsigned char rand_repeatable;
199 unsigned int thinktime;
200 unsigned int fsync_blocks;
201 unsigned int start_delay;
202 unsigned long timeout;
203 unsigned int overwrite;
204 unsigned int bw_avg_time;
206 unsigned long long zone_size;
207 unsigned long long zone_skip;
208 enum fio_memtype mem_type;
209 unsigned int stonewall;
210 unsigned int numjobs;
211 unsigned int iodepth;
212 os_cpu_mask_t cpumask;
214 unsigned int read_iolog;
215 unsigned int write_iolog;
216 unsigned int rwmixcycle;
217 unsigned int rwmixread;
227 os_random_state_t bsrange_state;
228 os_random_state_t verify_state;
233 * IO engine hooks, contains everything needed to submit an io_u
234 * to any of the available IO engines.
236 struct ioengine_ops *io_ops;
239 * Current IO depth and list of free and busy io_u's.
241 unsigned int cur_depth;
242 struct list_head io_u_freelist;
243 struct list_head io_u_busylist;
249 unsigned int ratemin;
250 unsigned int ratecycle;
251 unsigned long rate_usec_cycle;
252 long rate_pending_usleep;
253 unsigned long rate_bytes;
254 struct timeval lastrate;
256 unsigned long runtime[2]; /* msec */
257 unsigned long long io_size;
258 unsigned long long total_file_size;
259 unsigned long long start_offset;
260 unsigned long long total_io_size;
262 unsigned long long io_blocks[2];
263 unsigned long long io_bytes[2];
264 unsigned long long zone_bytes;
265 unsigned long long this_io_bytes[2];
269 * State for random io, a bitmap of blocks done vs not done
271 os_random_state_t random_state;
274 * CPU "io" cycle burner
276 unsigned int cpuload;
277 unsigned int cpucycle;
280 * bandwidth and latency stats
282 struct io_stat clat_stat[2]; /* completion latency */
283 struct io_stat slat_stat[2]; /* submission latency */
284 struct io_stat bw_stat[2]; /* bandwidth stats */
286 unsigned long long stat_io_bytes[2];
287 struct timeval stat_sample_time[2];
289 struct io_log *slat_log;
290 struct io_log *clat_log;
291 struct io_log *bw_log;
293 struct timeval start; /* start of this loop */
294 struct timeval epoch; /* time job was started */
297 * fio system usage accounting
299 struct rusage ru_start;
300 struct rusage ru_end;
301 unsigned long usr_time;
302 unsigned long sys_time;
306 * read/write mixed workload state
308 os_random_state_t rwmix_state;
309 struct timeval rwmix_switch;
310 enum fio_ddir rwmix_ddir;
313 * Pre-run and post-run shell
321 struct list_head io_hist_list;
322 struct list_head io_log_list;
325 #define __td_verror(td, err, msg) \
329 snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, error=%s", __FILE__, __LINE__, (msg)); \
333 #define td_verror(td, err) __td_verror((td), (err), strerror((err)))
334 #define td_vmsg(td, err, msg) __td_verror((td), (err), (msg))
336 extern struct io_u *__get_io_u(struct thread_data *);
337 extern void put_io_u(struct thread_data *, struct io_u *);
339 extern int rate_quit;
340 extern int write_lat_log;
341 extern int write_bw_log;
342 extern int exitall_on_terminate;
343 extern int thread_number;
346 extern int terse_output;
349 extern char *fio_inst_prefix;
350 extern int temp_stall_ts;
352 extern struct thread_data *threads;
354 #define td_read(td) ((td)->ddir == DDIR_READ)
355 #define td_write(td) ((td)->ddir == DDIR_WRITE)
356 #define td_rw(td) ((td)->iomix != 0)
358 #define BLOCKS_PER_MAP (8 * sizeof(long))
359 #define TO_MAP_BLOCK(td, f, b) ((b) - ((f)->file_offset / (td)->min_bs))
360 #define RAND_MAP_IDX(td, f, b) (TO_MAP_BLOCK(td, f, b) / BLOCKS_PER_MAP)
361 #define RAND_MAP_BIT(td, f, b) (TO_MAP_BLOCK(td, f, b) & (BLOCKS_PER_MAP - 1))
363 #define MAX_JOBS (1024)
365 struct disk_util_stat {
368 unsigned long long sectors[2];
371 unsigned time_in_queue;
375 struct list_head list;
381 struct disk_util_stat dus;
382 struct disk_util_stat last_dus;
388 struct io_completion_data {
391 int error; /* output */
392 unsigned long bytes_done[2]; /* output */
395 #define DISK_UTIL_MSEC (250)
398 #define min(a, b) ((a) < (b) ? (a) : (b))
404 extern int read_iolog_get(struct thread_data *, struct io_u *);
405 extern void write_iolog_put(struct thread_data *, struct io_u *);
406 extern int init_iolog(struct thread_data *td);
407 extern void log_io_piece(struct thread_data *, struct io_u *);
408 extern void prune_io_piece_log(struct thread_data *);
409 extern void write_iolog_close(struct thread_data *);
414 extern void add_clat_sample(struct thread_data *, int, unsigned long);
415 extern void add_slat_sample(struct thread_data *, int, unsigned long);
416 extern void add_bw_sample(struct thread_data *, int);
417 extern void show_run_stats(void);
418 extern void init_disk_util(struct thread_data *);
419 extern void update_rusage_stat(struct thread_data *);
420 extern void update_io_ticks(void);
421 extern void disk_util_timer_arm(void);
422 extern void setup_log(struct io_log **);
423 extern void finish_log(struct thread_data *, struct io_log *, const char *);
424 extern int setup_rate(struct thread_data *);
429 extern void time_init(void);
430 extern unsigned long utime_since(struct timeval *, struct timeval *);
431 extern unsigned long mtime_since(struct timeval *, struct timeval *);
432 extern unsigned long mtime_since_now(struct timeval *);
433 extern unsigned long time_since_now(struct timeval *);
434 extern unsigned long mtime_since_genesis(void);
435 extern void __usec_sleep(unsigned int);
436 extern void usec_sleep(struct thread_data *, unsigned long);
437 extern void rate_throttle(struct thread_data *, unsigned long, unsigned int);
442 extern int parse_options(int, char **);
443 extern int init_random_state(struct thread_data *);
446 * File setup/shutdown
448 extern void close_files(struct thread_data *);
449 extern int setup_files(struct thread_data *);
450 extern int file_invalidate_cache(struct thread_data *, struct fio_file *);
455 extern void print_thread_status(void);
456 extern void print_status_init(int);
459 * Thread life cycle. Once a thread has a runstate beyond TD_INITIALIZED, it
460 * will never back again. It may cycle between running/verififying/fsyncing.
461 * Once the thread reaches TD_EXITED, it is just waiting for the core to
478 extern void populate_verify_io_u(struct thread_data *, struct io_u *);
479 extern int get_next_verify(struct thread_data *td, struct io_u *);
480 extern int do_io_u_verify(struct thread_data *, struct io_u **);
483 * This is a pretty crappy semaphore implementation, but with the use that fio
484 * has (just signalling start/go conditions), it doesn't have to be better.
485 * Naturally this would not work for any type of contended semaphore or
488 static inline void fio_sem_init(volatile int *sem, int val)
493 static inline void fio_sem_down(volatile int *sem)
501 static inline void fio_sem_up(volatile int *sem)
507 * If logging output to a file, stderr should go to both stderr and f_err
509 #define log_err(args...) do { \
510 fprintf(f_err, ##args); \
511 if (f_err != stderr) \
512 fprintf(stderr, ##args); \
515 struct ioengine_ops {
519 int (*setup)(struct thread_data *);
520 int (*init)(struct thread_data *);
521 int (*prep)(struct thread_data *, struct io_u *);
522 int (*queue)(struct thread_data *, struct io_u *);
523 int (*getevents)(struct thread_data *, int, int, struct timespec *);
524 struct io_u *(*event)(struct thread_data *, int);
525 int (*cancel)(struct thread_data *, struct io_u *);
526 void (*cleanup)(struct thread_data *);
527 int (*sync)(struct thread_data *, struct fio_file *);
532 #define FIO_IOOPS_VERSION 2
534 extern struct ioengine_ops *load_ioengine(struct thread_data *, char *);
535 extern void close_ioengine(struct thread_data *);
538 * Mark unused variables passed to ops functions as unused, to silence gcc
540 #define fio_unused __attribute((__unused__))
542 #define for_each_td(td, i) \
543 for ((i) = 0, (td) = &threads[0]; (i) < (int) thread_number; (i)++, (td)++)
544 #define for_each_file(td, f, i) \
545 for ((i) = 0, (f) = &(td)->files[0]; (i) < (int) (td)->nr_files; (i)++, (f)++)