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#ifndef FIO_STEADYSTATE_H
#define FIO_STEADYSTATE_H
#include "stat.h"
#include "thread_options.h"
#include "lib/ieee754.h"
extern void steadystate_check(void);
extern void steadystate_setup(void);
extern int td_steadystate_init(struct thread_data *);
extern uint64_t steadystate_bw_mean(struct thread_stat *);
extern uint64_t steadystate_iops_mean(struct thread_stat *);
extern bool steadystate_enabled;
struct steadystate_data {
double limit;
unsigned long long dur;
unsigned long long ramp_time;
uint32_t state;
unsigned int head;
unsigned int tail;
uint64_t *iops_data;
uint64_t *bw_data;
double slope;
double deviation;
double criterion;
uint64_t sum_y;
uint64_t sum_x;
uint64_t sum_x_sq;
uint64_t sum_xy;
uint64_t oldest_y;
struct timeval prev_time;
uint64_t prev_iops;
uint64_t prev_bytes;
};
enum {
__FIO_SS_IOPS = 1,
__FIO_SS_BW = 2,
__FIO_SS_SLOPE = 4,
__FIO_SS_ATTAINED = 8,
__FIO_SS_RAMP_OVER = 16,
__FIO_SS_DATA = 32,
__FIO_SS_PCT = 64,
__FIO_SS_BUFFER_FULL = 128,
FIO_SS_IOPS = __FIO_SS_IOPS,
FIO_SS_IOPS_SLOPE = __FIO_SS_IOPS | __FIO_SS_SLOPE,
FIO_SS_BW = __FIO_SS_BW,
FIO_SS_BW_SLOPE = __FIO_SS_BW | __FIO_SS_SLOPE,
};
#define STEADYSTATE_MSEC 1000
#endif
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