| | 1 | #ifndef FIO_STEADYSTATE_H |
| | 2 | #define FIO_STEADYSTATE_H |
| | 3 | |
| | 4 | #include "thread_options.h" |
| | 5 | |
| | 6 | extern void steadystate_check(void); |
| | 7 | extern void steadystate_setup(void); |
| | 8 | extern int td_steadystate_init(struct thread_data *); |
| | 9 | extern unsigned long long steadystate_bw_mean(struct steadystate_data *); |
| | 10 | extern unsigned long long steadystate_iops_mean(struct steadystate_data *); |
| | 11 | |
| | 12 | extern bool steadystate_enabled; |
| | 13 | |
| | 14 | /* |
| | 15 | * For steady state detection |
| | 16 | */ |
| | 17 | struct steadystate_data { |
| | 18 | double limit; |
| | 19 | unsigned long long dur; |
| | 20 | unsigned long long ramp_time; |
| | 21 | |
| | 22 | unsigned int state; |
| | 23 | |
| | 24 | unsigned int head; |
| | 25 | unsigned int tail; |
| | 26 | unsigned long *iops_data; |
| | 27 | unsigned long *bw_data; |
| | 28 | |
| | 29 | double slope; |
| | 30 | double criterion; |
| | 31 | double deviation; |
| | 32 | |
| | 33 | unsigned long long sum_y; |
| | 34 | unsigned long long sum_x; |
| | 35 | unsigned long long sum_x_sq; |
| | 36 | unsigned long long sum_xy; |
| | 37 | unsigned long long oldest_y; |
| | 38 | |
| | 39 | struct timeval prev_time; |
| | 40 | unsigned long long prev_iops; |
| | 41 | unsigned long long prev_bytes; |
| | 42 | }; |
| | 43 | |
| | 44 | enum { |
| | 45 | __FIO_SS_IOPS = 1, |
| | 46 | __FIO_SS_BW = 2, |
| | 47 | __FIO_SS_SLOPE = 4, |
| | 48 | __FIO_SS_ATTAINED = 8, |
| | 49 | __FIO_SS_RAMP_OVER = 16, |
| | 50 | __FIO_SS_DATA = 32, |
| | 51 | __FIO_SS_PCT = 64, |
| | 52 | |
| | 53 | FIO_SS_IOPS = __FIO_SS_IOPS, |
| | 54 | FIO_SS_IOPS_SLOPE = __FIO_SS_IOPS | __FIO_SS_SLOPE, |
| | 55 | FIO_SS_BW = __FIO_SS_BW, |
| | 56 | FIO_SS_BW_SLOPE = __FIO_SS_BW | __FIO_SS_SLOPE, |
| | 57 | }; |
| | 58 | |
| | 59 | #define STEADYSTATE_MSEC 1000 |
| | 60 | |
| | 61 | #endif |
projects / fio.git / blame_incremental