1 #ifndef FIO_STEADYSTATE_H 2 #define FIO_STEADYSTATE_H 3 4 #include "stat.h" 5 #include "thread_options.h" 6 #include "lib/ieee754.h" 7 8 extern void steadystate_check(void); 9 extern void steadystate_setup(void); 10 extern int td_steadystate_init(struct thread_data *); 11 extern uint64_t steadystate_bw_mean(struct thread_stat *); 12 extern uint64_t steadystate_iops_mean(struct thread_stat *); 13 14 extern bool steadystate_enabled; 15 16 struct steadystate_data { 17 double limit; 18 unsigned long long dur; 19 unsigned long long ramp_time; 20 21 uint32_t state; 22 23 unsigned int head; 24 unsigned int tail; 25 uint64_t *iops_data; 26 uint64_t *bw_data; 27 28 double slope; 29 double deviation; 30 double criterion; 31 32 uint64_t sum_y; 33 uint64_t sum_x; 34 uint64_t sum_x_sq; 35 uint64_t sum_xy; 36 uint64_t oldest_y; 37 38 struct timeval prev_time; 39 uint64_t prev_iops; 40 uint64_t prev_bytes; 41 }; 42 43 enum { 44 __FIO_SS_IOPS = 1, 45 __FIO_SS_BW = 2, 46 __FIO_SS_SLOPE = 4, 47 __FIO_SS_ATTAINED = 8, 48 __FIO_SS_RAMP_OVER = 16, 49 __FIO_SS_DATA = 32, 50 __FIO_SS_PCT = 64, 51 __FIO_SS_BUFFER_FULL = 128, 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 62
