Add section 9 to HOWTO table of contents.
[fio.git] / idletime.h
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f2a2ce0e
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1#ifndef FIO_IDLETIME_H
2#define FIO_IDLETIME_H
3
4#include "fio.h"
5
6#define CALIBRATE_RUNS 10
7#define CALIBRATE_SCALE 1000
8#define MAX_CPU_STR_LEN 32
9
10enum {
11 IDLE_PROF_OPT_NONE,
12 IDLE_PROF_OPT_CALI, /* calibration only */
13 IDLE_PROF_OPT_SYSTEM,
14 IDLE_PROF_OPT_PERCPU
15};
16
17enum {
18 IDLE_PROF_STATUS_OK,
19 IDLE_PROF_STATUS_CALI_STOP,
20 IDLE_PROF_STATUS_PROF_STOP,
21 IDLE_PROF_STATUS_ABORT
22};
23
24struct idle_prof_thread {
25 pthread_t thread;
26 int cpu;
27 int state;
28 struct timeval tps;
29 struct timeval tpe;
30 double cali_time; /* microseconds to finish a unit wrok */
31 double loops;
32 double idleness;
33 unsigned char *data; /* bytes to be touched */
34 pthread_cond_t cond;
35 pthread_mutex_t init_lock;
36 pthread_mutex_t start_lock;
37};
38
39struct idle_prof_common {
40 struct idle_prof_thread *ipts;
41 int nr_cpus;
42 int status;
43 int opt;
44 double cali_mean;
45 double cali_stddev;
46 void *buf; /* single data allocation for all threads */
47};
48
49extern int fio_idle_prof_parse_opt(const char *);
50
51extern void fio_idle_prof_init(void);
52extern void fio_idle_prof_start(void);
53extern void fio_idle_prof_stop(void);
54
55extern void show_idle_prof_stats(int, struct json_object *);
56
57#endif