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 create_file;
185 unsigned char invalidate_cache;
186 unsigned char create_serialize;
187 unsigned char create_fsync;
188 unsigned char end_fsync;
189 unsigned char sync_io;
190 unsigned char verify;
191 unsigned char use_thread;
192 unsigned char unlink;
193 unsigned char do_disk_util;
194 unsigned char override_sync;
195 unsigned char rand_repeatable;
200 unsigned int thinktime;
201 unsigned int fsync_blocks;
202 unsigned int start_delay;
203 unsigned long timeout;
204 unsigned int overwrite;
205 unsigned int bw_avg_time;
207 unsigned long long zone_size;
208 unsigned long long zone_skip;
209 enum fio_memtype mem_type;
210 unsigned int stonewall;
211 unsigned int numjobs;
212 unsigned int iodepth;
213 os_cpu_mask_t cpumask;
215 unsigned int read_iolog;
216 unsigned int write_iolog;
217 unsigned int rwmixcycle;
218 unsigned int rwmixread;
228 os_random_state_t bsrange_state;
229 os_random_state_t verify_state;
234 * IO engine hooks, contains everything needed to submit an io_u
235 * to any of the available IO engines.
237 struct ioengine_ops *io_ops;
240 * Current IO depth and list of free and busy io_u's.
242 unsigned int cur_depth;
243 struct list_head io_u_freelist;
244 struct list_head io_u_busylist;
250 unsigned int ratemin;
251 unsigned int ratecycle;
252 unsigned long rate_usec_cycle;
253 long rate_pending_usleep;
254 unsigned long rate_bytes;
255 struct timeval lastrate;
257 unsigned long runtime[2]; /* msec */
258 unsigned long long io_size;
259 unsigned long long total_file_size;
260 unsigned long long start_offset;
261 unsigned long long total_io_size;
263 unsigned long long io_blocks[2];
264 unsigned long long io_bytes[2];
265 unsigned long long zone_bytes;
266 unsigned long long this_io_bytes[2];
270 * State for random io, a bitmap of blocks done vs not done
272 os_random_state_t random_state;
275 * CPU "io" cycle burner
277 unsigned int cpuload;
278 unsigned int cpucycle;
281 * bandwidth and latency stats
283 struct io_stat clat_stat[2]; /* completion latency */
284 struct io_stat slat_stat[2]; /* submission latency */
285 struct io_stat bw_stat[2]; /* bandwidth stats */
287 unsigned long long stat_io_bytes[2];
288 struct timeval stat_sample_time[2];
290 struct io_log *slat_log;
291 struct io_log *clat_log;
292 struct io_log *bw_log;
294 struct timeval start; /* start of this loop */
295 struct timeval epoch; /* time job was started */
298 * fio system usage accounting
300 struct rusage ru_start;
301 struct rusage ru_end;
302 unsigned long usr_time;
303 unsigned long sys_time;
307 * read/write mixed workload state
309 os_random_state_t rwmix_state;
310 struct timeval rwmix_switch;
311 enum fio_ddir rwmix_ddir;
314 * Pre-run and post-run shell
322 struct list_head io_hist_list;
323 struct list_head io_log_list;
326 #define __td_verror(td, err, msg) \
330 snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, error=%s", __FILE__, __LINE__, (msg)); \
334 #define td_verror(td, err) __td_verror((td), (err), strerror((err)))
335 #define td_vmsg(td, err, msg) __td_verror((td), (err), (msg))
337 extern struct io_u *__get_io_u(struct thread_data *);
338 extern void put_io_u(struct thread_data *, struct io_u *);
340 extern int rate_quit;
341 extern int write_lat_log;
342 extern int write_bw_log;
343 extern int exitall_on_terminate;
344 extern int thread_number;
347 extern int terse_output;
350 extern char *fio_inst_prefix;
351 extern int temp_stall_ts;
353 extern struct thread_data *threads;
355 #define td_read(td) ((td)->ddir == DDIR_READ)
356 #define td_write(td) ((td)->ddir == DDIR_WRITE)
357 #define td_rw(td) ((td)->iomix != 0)
359 #define BLOCKS_PER_MAP (8 * sizeof(long))
360 #define TO_MAP_BLOCK(td, f, b) ((b) - ((f)->file_offset / (td)->min_bs))
361 #define RAND_MAP_IDX(td, f, b) (TO_MAP_BLOCK(td, f, b) / BLOCKS_PER_MAP)
362 #define RAND_MAP_BIT(td, f, b) (TO_MAP_BLOCK(td, f, b) & (BLOCKS_PER_MAP - 1))
364 #define MAX_JOBS (1024)
366 struct disk_util_stat {
369 unsigned long long sectors[2];
372 unsigned time_in_queue;
376 struct list_head list;
382 struct disk_util_stat dus;
383 struct disk_util_stat last_dus;
389 struct io_completion_data {
392 int error; /* output */
393 unsigned long bytes_done[2]; /* output */
396 #define DISK_UTIL_MSEC (250)
399 #define min(a, b) ((a) < (b) ? (a) : (b))
405 extern int read_iolog_get(struct thread_data *, struct io_u *);
406 extern void write_iolog_put(struct thread_data *, struct io_u *);
407 extern int init_iolog(struct thread_data *td);
408 extern void log_io_piece(struct thread_data *, struct io_u *);
409 extern void prune_io_piece_log(struct thread_data *);
410 extern void write_iolog_close(struct thread_data *);
415 extern void add_clat_sample(struct thread_data *, int, unsigned long);
416 extern void add_slat_sample(struct thread_data *, int, unsigned long);
417 extern void add_bw_sample(struct thread_data *, int);
418 extern void show_run_stats(void);
419 extern void init_disk_util(struct thread_data *);
420 extern void update_rusage_stat(struct thread_data *);
421 extern void update_io_ticks(void);
422 extern void disk_util_timer_arm(void);
423 extern void setup_log(struct io_log **);
424 extern void finish_log(struct thread_data *, struct io_log *, const char *);
425 extern int setup_rate(struct thread_data *);
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 void __usec_sleep(unsigned int);
435 extern void usec_sleep(struct thread_data *, unsigned long);
436 extern void rate_throttle(struct thread_data *, unsigned long, unsigned int);
441 extern int parse_options(int, char **);
442 extern int init_random_state(struct thread_data *);
445 * File setup/shutdown
447 extern void close_files(struct thread_data *);
448 extern int setup_files(struct thread_data *);
451 * This is a pretty crappy semaphore implementation, but with the use that fio
452 * has (just signalling start/go conditions), it doesn't have to be better.
453 * Naturally this would not work for any type of contended semaphore or
456 static inline void fio_sem_init(volatile int *sem, int val)
461 static inline void fio_sem_down(volatile int *sem)
469 static inline void fio_sem_up(volatile int *sem)
475 * If logging output to a file, stderr should go to both stderr and f_err
477 #define log_err(args...) do { \
478 fprintf(f_err, ##args); \
479 if (f_err != stderr) \
480 fprintf(stderr, ##args); \
483 struct ioengine_ops {
487 int (*setup)(struct thread_data *);
488 int (*init)(struct thread_data *);
489 int (*prep)(struct thread_data *, struct io_u *);
490 int (*queue)(struct thread_data *, struct io_u *);
491 int (*getevents)(struct thread_data *, int, int, struct timespec *);
492 struct io_u *(*event)(struct thread_data *, int);
493 int (*cancel)(struct thread_data *, struct io_u *);
494 void (*cleanup)(struct thread_data *);
495 int (*sync)(struct thread_data *, struct fio_file *);
500 #define FIO_IOOPS_VERSION 2
502 extern struct ioengine_ops *load_ioengine(struct thread_data *, char *);
503 extern void close_ioengine(struct thread_data *);
506 * Mark unused variables passed to ops functions as unused, to silence gcc
508 #define fio_unused __attribute((__unused__))
510 #define for_each_file(td, f, i) \
511 for ((i) = 0, (f) = &(td)->files[0]; (i) < (td)->nr_files; (i)++, (f) = &(td)->files[(i)])