[fio.git] / steadystate.h

#ifndef FIO_STEADYSTATE_H
#define FIO_STEADYSTATE_H

#include "stat.h"
#include "thread_options.h"
#include "lib/ieee754.h"

extern void steadystate_free(struct thread_data *);
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 timespec prev_time;
	uint64_t prev_iops;
	uint64_t prev_bytes;
};

enum {
	__FIO_SS_IOPS = 0,
	__FIO_SS_BW,
	__FIO_SS_SLOPE,
	__FIO_SS_ATTAINED,
	__FIO_SS_RAMP_OVER,
	__FIO_SS_DATA,
	__FIO_SS_PCT,
	__FIO_SS_BUFFER_FULL,
};

enum {
	FIO_SS_IOPS		= 1 << __FIO_SS_IOPS,
	FIO_SS_BW		= 1 << __FIO_SS_BW,
	FIO_SS_SLOPE		= 1 << __FIO_SS_SLOPE,
	FIO_SS_ATTAINED		= 1 << __FIO_SS_ATTAINED,
	FIO_SS_RAMP_OVER	= 1 << __FIO_SS_RAMP_OVER,
	FIO_SS_DATA		= 1 << __FIO_SS_DATA,
	FIO_SS_PCT		= 1 << __FIO_SS_PCT,
	FIO_SS_BUFFER_FULL	= 1 << __FIO_SS_BUFFER_FULL,

	FIO_SS_IOPS_SLOPE	= FIO_SS_IOPS | FIO_SS_SLOPE,
	FIO_SS_BW_SLOPE		= FIO_SS_BW | FIO_SS_SLOPE,
};

#define STEADYSTATE_MSEC	1000

#endif
Commit	Line	Data
	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_free(struct thread_data *);
	9	extern void steadystate_check(void);
	10	extern void steadystate_setup(void);
	11	extern int td_steadystate_init(struct thread_data *);
	12	extern uint64_t steadystate_bw_mean(struct thread_stat *);
	13	extern uint64_t steadystate_iops_mean(struct thread_stat *);
	14
	15	extern bool steadystate_enabled;
	16
	17	struct steadystate_data {
	18	double limit;
	19	unsigned long long dur;
	20	unsigned long long ramp_time;
	21
	22	uint32_t state;
	23
	24	unsigned int head;
	25	unsigned int tail;
	26	uint64_t *iops_data;
	27	uint64_t *bw_data;
	28
	29	double slope;
	30	double deviation;
	31	double criterion;
	32
	33	uint64_t sum_y;
	34	uint64_t sum_x;
	35	uint64_t sum_x_sq;
	36	uint64_t sum_xy;
	37	uint64_t oldest_y;
	38
	39	struct timespec prev_time;
	40	uint64_t prev_iops;
	41	uint64_t prev_bytes;
	42	};
	43
	44	enum {
	45	__FIO_SS_IOPS = 0,
	46	__FIO_SS_BW,
	47	__FIO_SS_SLOPE,
	48	__FIO_SS_ATTAINED,
	49	__FIO_SS_RAMP_OVER,
	50	__FIO_SS_DATA,
	51	__FIO_SS_PCT,
	52	__FIO_SS_BUFFER_FULL,
	53	};
	54
	55	enum {
	56	FIO_SS_IOPS = 1 << __FIO_SS_IOPS,
	57	FIO_SS_BW = 1 << __FIO_SS_BW,
	58	FIO_SS_SLOPE = 1 << __FIO_SS_SLOPE,
	59	FIO_SS_ATTAINED = 1 << __FIO_SS_ATTAINED,
	60	FIO_SS_RAMP_OVER = 1 << __FIO_SS_RAMP_OVER,
	61	FIO_SS_DATA = 1 << __FIO_SS_DATA,
	62	FIO_SS_PCT = 1 << __FIO_SS_PCT,
	63	FIO_SS_BUFFER_FULL = 1 << __FIO_SS_BUFFER_FULL,
	64
	65	FIO_SS_IOPS_SLOPE = FIO_SS_IOPS \| FIO_SS_SLOPE,
	66	FIO_SS_BW_SLOPE = FIO_SS_BW \| FIO_SS_SLOPE,
	67	};
	68
	69	#define STEADYSTATE_MSEC 1000
	70
	71	#endif