[fio.git] / steadystate.h

#ifndef FIO_STEADYSTATE_H
#define FIO_STEADYSTATE_H

#include "thread_options.h"

extern void steadystate_check(void);
extern void steadystate_setup(void);
extern void td_steadystate_init(struct thread_data *);

extern bool steadystate_enabled;

/*
 * For steady state detection
 */
struct steadystate_data {
	double limit;
	unsigned long long dur;
	unsigned long long ramp_time;
	bool pct;

	unsigned int mode;
	int last_in_group;
	int ramp_time_over;

	unsigned int head;
	unsigned int tail;
	unsigned long *iops_data;
	unsigned long *bw_data;

	double slope;
	double criterion;
	double deviation;

	unsigned long long sum_y;
	unsigned long long sum_x;
	unsigned long long sum_x_sq;
	unsigned long long sum_xy;
	unsigned long long oldest_y;

	struct timeval prev_time;
	unsigned long long prev_iops;
	unsigned long long prev_bytes;
};

enum {
	__FIO_SS_IOPS		= 1,
	__FIO_SS_BW		= 2,
	__FIO_SS_SLOPE		= 4,
	__FIO_SS_ATTAINED	= 8,

	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
Commit	Line	Data
	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 void td_steadystate_init(struct thread_data *);
	9
	10	extern bool steadystate_enabled;
	11
	12	/*
	13	* For steady state detection
	14	*/
	15	struct steadystate_data {
	16	double limit;
	17	unsigned long long dur;
	18	unsigned long long ramp_time;
	19	bool pct;
	20
	21	unsigned int mode;
	22	int last_in_group;
	23	int ramp_time_over;
	24
	25	unsigned int head;
	26	unsigned int tail;
	27	unsigned long *iops_data;
	28	unsigned long *bw_data;
	29
	30	double slope;
	31	double criterion;
	32	double deviation;
	33
	34	unsigned long long sum_y;
	35	unsigned long long sum_x;
	36	unsigned long long sum_x_sq;
	37	unsigned long long sum_xy;
	38	unsigned long long oldest_y;
	39
	40	struct timeval prev_time;
	41	unsigned long long prev_iops;
	42	unsigned long long prev_bytes;
	43	};
	44
	45	enum {
	46	__FIO_SS_IOPS = 1,
	47	__FIO_SS_BW = 2,
	48	__FIO_SS_SLOPE = 4,
	49	__FIO_SS_ATTAINED = 8,
	50
	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,
	55	};
	56
	57	#define STEADYSTATE_MSEC 1000
	58
	59	#endif