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 unsigned long long offset;
52 #ifdef FIO_HAVE_LIBAIO
55 #ifdef FIO_HAVE_POSIXAIO
62 struct timeval start_time;
63 struct timeval issue_time;
67 unsigned long long offset;
76 struct list_head list;
79 #define FIO_HDR_MAGIC 0xf00baaef
87 struct verify_header {
88 unsigned int fio_magic;
90 unsigned int verify_type;
92 char md5_digest[MD5_HASH_WORDS * 4];
97 struct group_run_stats {
98 unsigned long long max_run[2], min_run[2];
99 unsigned long long max_bw[2], min_bw[2];
100 unsigned long long io_kb[2];
101 unsigned long long agg[2];
110 * What type of allocation to use for io buffers
113 MEM_MALLOC = 0, /* ordinary malloc */
114 MEM_SHM, /* use shared memory segments */
115 MEM_MMAP, /* use anonynomous mmap */
119 * The type of object we are working on
129 FIO_MMAPIO = 1 << 1 | FIO_SYNCIO,
131 FIO_POSIXAIO = 1 << 3,
133 FIO_SPLICEIO = 1 << 5 | FIO_SYNCIO,
137 * This describes a single thread/process executing a fio job.
147 enum fio_filetype filetype;
153 size_t orig_buffer_size;
154 volatile int terminate;
155 volatile int runstate;
156 volatile int old_runstate;
161 unsigned char sequential;
162 unsigned char odirect;
163 unsigned char create_file;
164 unsigned char invalidate_cache;
165 unsigned char create_serialize;
166 unsigned char create_fsync;
167 unsigned char end_fsync;
168 unsigned char sync_io;
169 unsigned char verify;
170 unsigned char use_thread;
171 unsigned char do_disk_util;
172 unsigned char override_sync;
177 unsigned int thinktime;
178 unsigned int fsync_blocks;
179 unsigned int start_delay;
180 unsigned int timeout;
181 enum fio_iotype io_engine;
182 unsigned int overwrite;
183 unsigned int bw_avg_time;
185 unsigned long long file_size;
186 unsigned long long real_file_size;
187 unsigned long long file_offset;
188 unsigned long long zone_size;
189 unsigned long long zone_skip;
190 enum fio_memtype mem_type;
191 unsigned int stonewall;
192 unsigned int numjobs;
193 unsigned int iodepth;
194 os_cpu_mask_t cpumask;
197 unsigned int read_iolog;
198 unsigned int write_iolog;
199 unsigned int rwmixcycle;
200 unsigned int rwmixread;
210 os_random_state_t bsrange_state;
211 os_random_state_t verify_state;
216 * IO engine hooks, contains everything needed to submit an io_u
217 * to any of the available IO engines.
220 char io_engine_name[16];
221 int (*io_prep)(struct thread_data *, struct io_u *);
222 int (*io_queue)(struct thread_data *, struct io_u *);
223 int (*io_getevents)(struct thread_data *, int, int, struct timespec *);
224 struct io_u *(*io_event)(struct thread_data *, int);
225 int (*io_cancel)(struct thread_data *, struct io_u *);
226 void (*io_cleanup)(struct thread_data *);
227 int (*io_sync)(struct thread_data *);
230 * Current IO depth and list of free and busy io_u's.
232 unsigned int cur_depth;
233 struct list_head io_u_freelist;
234 struct list_head io_u_busylist;
240 unsigned int ratemin;
241 unsigned int ratecycle;
242 unsigned long rate_usec_cycle;
243 long rate_pending_usleep;
244 unsigned long rate_bytes;
245 struct timeval lastrate;
247 unsigned long runtime[2]; /* msec */
248 unsigned long long io_size;
249 unsigned long long total_io_size;
251 unsigned long long io_blocks[2];
252 unsigned long long io_bytes[2];
253 unsigned long long zone_bytes;
254 unsigned long long this_io_bytes[2];
255 unsigned long long last_pos;
259 * State for random io, a bitmap of blocks done vs not done
261 os_random_state_t random_state;
262 unsigned long *file_map;
263 unsigned int num_maps;
266 * bandwidth and latency stats
268 struct io_stat clat_stat[2]; /* completion latency */
269 struct io_stat slat_stat[2]; /* submission latency */
270 struct io_stat bw_stat[2]; /* bandwidth stats */
272 unsigned long long stat_io_bytes[2];
273 struct timeval stat_sample_time[2];
275 struct io_log *slat_log;
276 struct io_log *clat_log;
277 struct io_log *bw_log;
279 struct timeval start; /* start of this loop */
280 struct timeval epoch; /* time job was started */
283 * fio system usage accounting
285 struct rusage ru_start;
286 struct rusage ru_end;
287 unsigned long usr_time;
288 unsigned long sys_time;
292 * read/write mixed workload state
294 os_random_state_t rwmix_state;
295 struct timeval rwmix_switch;
296 enum fio_ddir rwmix_ddir;
299 * Pre-run and post-run shell
307 struct list_head io_hist_list;
308 struct list_head io_log_list;
311 #define td_verror(td, err) \
315 snprintf(td->verror, sizeof(td->verror) - 1, "file:%s:%d, error=%s", __FILE__, __LINE__, strerror(e)); \
318 extern struct io_u *__get_io_u(struct thread_data *);
319 extern void put_io_u(struct thread_data *, struct io_u *);
321 extern int rate_quit;
322 extern int write_lat_log;
323 extern int write_bw_log;
324 extern int exitall_on_terminate;
325 extern int thread_number;
329 extern struct thread_data *threads;
331 #define td_read(td) ((td)->ddir == DDIR_READ)
332 #define td_write(td) ((td)->ddir == DDIR_WRITE)
333 #define td_rw(td) ((td)->iomix != 0)
335 #define BLOCKS_PER_MAP (8 * sizeof(long))
336 #define TO_MAP_BLOCK(td, b) ((b) - ((td)->file_offset / (td)->min_bs))
337 #define RAND_MAP_IDX(td, b) (TO_MAP_BLOCK(td, b) / BLOCKS_PER_MAP)
338 #define RAND_MAP_BIT(td, b) (TO_MAP_BLOCK(td, b) & (BLOCKS_PER_MAP - 1))
340 #define MAX_JOBS (1024)
342 struct disk_util_stat {
345 unsigned long long sectors[2];
348 unsigned time_in_queue;
352 struct list_head list;
358 struct disk_util_stat dus;
359 struct disk_util_stat last_dus;
365 struct io_completion_data {
368 int error; /* output */
369 unsigned long bytes_done[2]; /* output */
372 #define DISK_UTIL_MSEC (250)
375 #define min(a, b) ((a) < (b) ? (a) : (b))
381 extern int read_iolog_get(struct thread_data *, struct io_u *);
382 extern void write_iolog_put(struct thread_data *, struct io_u *);
383 extern int init_iolog(struct thread_data *td);
384 extern void log_io_piece(struct thread_data *, struct io_u *);
385 extern void prune_io_piece_log(struct thread_data *);
386 extern void write_iolog_close(struct thread_data *);
391 extern void add_clat_sample(struct thread_data *, int, unsigned long);
392 extern void add_slat_sample(struct thread_data *, int, unsigned long);
393 extern void add_bw_sample(struct thread_data *, int);
394 extern void show_run_stats(void);
395 extern void init_disk_util(struct thread_data *);
396 extern void update_rusage_stat(struct thread_data *);
397 extern void update_io_ticks(void);
398 extern void disk_util_timer_arm(void);
399 extern void setup_log(struct io_log **);
400 extern void finish_log(struct thread_data *, struct io_log *, const char *);
401 extern int setup_rate(struct thread_data *);
406 extern unsigned long utime_since(struct timeval *, struct timeval *);
407 extern unsigned long mtime_since(struct timeval *, struct timeval *);
408 extern unsigned long mtime_since_now(struct timeval *);
409 extern unsigned long time_since_now(struct timeval *);
410 extern void usec_sleep(struct thread_data *, unsigned long);
411 extern void rate_throttle(struct thread_data *, unsigned long, unsigned int);
416 extern int parse_options(int, char **);
417 extern int init_random_state(struct thread_data *);
420 * This is a pretty crappy semaphore implementation, but with the use that fio
421 * has (just signalling start/go conditions), it doesn't have to be better.
422 * Naturally this would not work for any type of contended semaphore or
425 static inline void fio_sem_init(volatile int volatile *sem, int val)
430 static inline void fio_sem_down(volatile int volatile *sem)
438 static inline void fio_sem_up(volatile int volatile *sem)