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 {
138 * A file may not be a file descriptor, let the io engine decide
141 unsigned long file_data;
146 unsigned long long file_size;
147 unsigned long long real_file_size;
148 unsigned long long file_offset;
149 unsigned long long last_pos;
151 unsigned long *file_map;
152 unsigned int num_maps;
156 * This describes a single thread/process executing a fio job.
165 enum fio_filetype filetype;
166 struct fio_file *files;
167 unsigned int nr_files;
168 unsigned int next_file;
172 size_t orig_buffer_size;
173 volatile int terminate;
174 volatile int runstate;
179 unsigned char sequential;
180 unsigned char odirect;
181 unsigned char create_file;
182 unsigned char invalidate_cache;
183 unsigned char create_serialize;
184 unsigned char create_fsync;
185 unsigned char end_fsync;
186 unsigned char sync_io;
187 unsigned char verify;
188 unsigned char use_thread;
189 unsigned char do_disk_util;
190 unsigned char override_sync;
191 unsigned char rand_repeatable;
196 unsigned int thinktime;
197 unsigned int fsync_blocks;
198 unsigned int start_delay;
199 unsigned long timeout;
200 unsigned int overwrite;
201 unsigned int bw_avg_time;
203 unsigned long long zone_size;
204 unsigned long long zone_skip;
205 enum fio_memtype mem_type;
206 unsigned int stonewall;
207 unsigned int numjobs;
208 unsigned int iodepth;
209 os_cpu_mask_t cpumask;
211 unsigned int read_iolog;
212 unsigned int write_iolog;
213 unsigned int rwmixcycle;
214 unsigned int rwmixread;
224 os_random_state_t bsrange_state;
225 os_random_state_t verify_state;
230 * IO engine hooks, contains everything needed to submit an io_u
231 * to any of the available IO engines.
233 struct ioengine_ops *io_ops;
236 * Current IO depth and list of free and busy io_u's.
238 unsigned int cur_depth;
239 struct list_head io_u_freelist;
240 struct list_head io_u_busylist;
246 unsigned int ratemin;
247 unsigned int ratecycle;
248 unsigned long rate_usec_cycle;
249 long rate_pending_usleep;
250 unsigned long rate_bytes;
251 struct timeval lastrate;
253 unsigned long runtime[2]; /* msec */
254 unsigned long long io_size;
255 unsigned long long total_file_size;
256 unsigned long long start_offset;
257 unsigned long long total_io_size;
259 unsigned long long io_blocks[2];
260 unsigned long long io_bytes[2];
261 unsigned long long zone_bytes;
262 unsigned long long this_io_bytes[2];
266 * State for random io, a bitmap of blocks done vs not done
268 os_random_state_t random_state;
271 * CPU "io" cycle burner
273 unsigned int cpuload;
274 unsigned int cpucycle;
277 * bandwidth and latency stats
279 struct io_stat clat_stat[2]; /* completion latency */
280 struct io_stat slat_stat[2]; /* submission latency */
281 struct io_stat bw_stat[2]; /* bandwidth stats */
283 unsigned long long stat_io_bytes[2];
284 struct timeval stat_sample_time[2];
286 struct io_log *slat_log;
287 struct io_log *clat_log;
288 struct io_log *bw_log;
290 struct timeval start; /* start of this loop */
291 struct timeval epoch; /* time job was started */
294 * fio system usage accounting
296 struct rusage ru_start;
297 struct rusage ru_end;
298 unsigned long usr_time;
299 unsigned long sys_time;
303 * read/write mixed workload state
305 os_random_state_t rwmix_state;
306 struct timeval rwmix_switch;
307 enum fio_ddir rwmix_ddir;
310 * Pre-run and post-run shell
318 struct list_head io_hist_list;
319 struct list_head io_log_list;
322 #define __td_verror(td, err, msg) \
326 snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, error=%s", __FILE__, __LINE__, (msg)); \
330 #define td_verror(td, err) __td_verror((td), (err), strerror((err)))
331 #define td_vmsg(td, err, msg) __td_verror((td), (err), (msg))
333 extern struct io_u *__get_io_u(struct thread_data *);
334 extern void put_io_u(struct thread_data *, struct io_u *);
336 extern int rate_quit;
337 extern int write_lat_log;
338 extern int write_bw_log;
339 extern int exitall_on_terminate;
340 extern int thread_number;
343 extern int terse_output;
346 extern char *fio_inst_prefix;
347 extern int temp_stall_ts;
349 extern struct thread_data *threads;
351 #define td_read(td) ((td)->ddir == DDIR_READ)
352 #define td_write(td) ((td)->ddir == DDIR_WRITE)
353 #define td_rw(td) ((td)->iomix != 0)
355 #define BLOCKS_PER_MAP (8 * sizeof(long))
356 #define TO_MAP_BLOCK(td, f, b) ((b) - ((f)->file_offset / (td)->min_bs))
357 #define RAND_MAP_IDX(td, f, b) (TO_MAP_BLOCK(td, f, b) / BLOCKS_PER_MAP)
358 #define RAND_MAP_BIT(td, f, b) (TO_MAP_BLOCK(td, f, b) & (BLOCKS_PER_MAP - 1))
360 #define MAX_JOBS (1024)
362 struct disk_util_stat {
365 unsigned long long sectors[2];
368 unsigned time_in_queue;
372 struct list_head list;
378 struct disk_util_stat dus;
379 struct disk_util_stat last_dus;
385 struct io_completion_data {
388 int error; /* output */
389 unsigned long bytes_done[2]; /* output */
392 #define DISK_UTIL_MSEC (250)
395 #define min(a, b) ((a) < (b) ? (a) : (b))
401 extern int read_iolog_get(struct thread_data *, struct io_u *);
402 extern void write_iolog_put(struct thread_data *, struct io_u *);
403 extern int init_iolog(struct thread_data *td);
404 extern void log_io_piece(struct thread_data *, struct io_u *);
405 extern void prune_io_piece_log(struct thread_data *);
406 extern void write_iolog_close(struct thread_data *);
411 extern void add_clat_sample(struct thread_data *, int, unsigned long);
412 extern void add_slat_sample(struct thread_data *, int, unsigned long);
413 extern void add_bw_sample(struct thread_data *, int);
414 extern void show_run_stats(void);
415 extern void init_disk_util(struct thread_data *);
416 extern void update_rusage_stat(struct thread_data *);
417 extern void update_io_ticks(void);
418 extern void disk_util_timer_arm(void);
419 extern void setup_log(struct io_log **);
420 extern void finish_log(struct thread_data *, struct io_log *, const char *);
421 extern int setup_rate(struct thread_data *);
426 extern unsigned long utime_since(struct timeval *, struct timeval *);
427 extern unsigned long mtime_since(struct timeval *, struct timeval *);
428 extern unsigned long mtime_since_now(struct timeval *);
429 extern unsigned long time_since_now(struct timeval *);
430 extern void __usec_sleep(unsigned int);
431 extern void usec_sleep(struct thread_data *, unsigned long);
432 extern void rate_throttle(struct thread_data *, unsigned long, unsigned int);
437 extern int parse_options(int, char **);
438 extern int init_random_state(struct thread_data *);
441 * File setup/shutdown
443 extern void close_files(struct thread_data *);
444 extern int setup_files(struct thread_data *);
447 * This is a pretty crappy semaphore implementation, but with the use that fio
448 * has (just signalling start/go conditions), it doesn't have to be better.
449 * Naturally this would not work for any type of contended semaphore or
452 static inline void fio_sem_init(volatile int *sem, int val)
457 static inline void fio_sem_down(volatile int *sem)
465 static inline void fio_sem_up(volatile int *sem)
471 * If logging output to a file, stderr should go to both stderr and f_err
473 #define log_err(args...) do { \
474 fprintf(f_err, ##args); \
475 if (f_err != stderr) \
476 fprintf(stderr, ##args); \
479 struct ioengine_ops {
483 int (*setup)(struct thread_data *);
484 int (*init)(struct thread_data *);
485 int (*prep)(struct thread_data *, struct io_u *);
486 int (*queue)(struct thread_data *, struct io_u *);
487 int (*getevents)(struct thread_data *, int, int, struct timespec *);
488 struct io_u *(*event)(struct thread_data *, int);
489 int (*cancel)(struct thread_data *, struct io_u *);
490 void (*cleanup)(struct thread_data *);
491 int (*sync)(struct thread_data *, struct fio_file *);
496 #define FIO_IOOPS_VERSION 2
498 extern struct ioengine_ops *load_ioengine(struct thread_data *, char *);
499 extern void close_ioengine(struct thread_data *);
502 * Mark unused variables passed to ops functions as unused, to silence gcc
504 #define fio_unused __attribute((__unused__))
506 #define for_each_file(td, f, i) \
507 for ((i) = 0, (f) = &(td)->files[(i)]; (i) < (td)->nr_files; (i)++, (f) = &(td)->files[(i)])