1 #ifndef FIO_STEADYSTATE_H
2 #define FIO_STEADYSTATE_H
4 #include "thread_options.h"
6 extern void steadystate_check(void);
7 extern void steadystate_setup(void);
8 extern void td_steadystate_init(struct thread_data *);
10 extern bool steadystate_enabled;
13 * For steady state detection
15 struct steadystate_data {
17 unsigned long long dur;
18 unsigned long long ramp_time;
25 unsigned long *iops_data;
26 unsigned long *bw_data;
32 unsigned long long sum_y;
33 unsigned long long sum_x;
34 unsigned long long sum_x_sq;
35 unsigned long long sum_xy;
36 unsigned long long oldest_y;
38 struct timeval prev_time;
39 unsigned long long prev_iops;
40 unsigned long long prev_bytes;
47 __FIO_SS_ATTAINED = 8,
48 __FIO_SS_RAMP_OVER = 16,
51 FIO_SS_IOPS = __FIO_SS_IOPS,
52 FIO_SS_IOPS_SLOPE = __FIO_SS_IOPS | __FIO_SS_SLOPE,
53 FIO_SS_BW = __FIO_SS_BW,
54 FIO_SS_BW_SLOPE = __FIO_SS_BW | __FIO_SS_SLOPE,
57 #define STEADYSTATE_MSEC 1000