#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 void steadystate_alloc(struct thread_data *);
+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;
+extern bool steadystate_enabled;
-/*
- * For steady state detection
- */
struct steadystate_data {
double limit;
unsigned long long dur;
unsigned long long ramp_time;
- bool check_iops;
- bool check_slope;
- bool pct;
- int attained;
- int last_in_group;
- int ramp_time_over;
+ uint32_t state;
unsigned int head;
unsigned int tail;
- unsigned long *iops_data;
- unsigned long *bw_data;
+ uint64_t *iops_data;
+ uint64_t *bw_data;
double slope;
- double criterion;
double deviation;
+ double criterion;
- 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;
+ 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;
- unsigned long long prev_iops;
- unsigned long long prev_bytes;
+ struct timespec prev_time;
+ uint64_t prev_iops;
+ uint64_t prev_bytes;
};
enum {
- FIO_STEADYSTATE_IOPS = 0,
- FIO_STEADYSTATE_IOPS_SLOPE,
- FIO_STEADYSTATE_BW,
- FIO_STEADYSTATE_BW_SLOPE,
+ __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,
};
-static inline bool steadystate_check_slope(struct thread_options *o)
-{
- return o->ss == FIO_STEADYSTATE_IOPS_SLOPE ||
- o->ss == FIO_STEADYSTATE_BW_SLOPE;
-}
-
-static inline bool steadystate_check_iops(struct thread_options *o)
-{
- return o->ss == FIO_STEADYSTATE_IOPS ||
- o->ss == FIO_STEADYSTATE_IOPS_SLOPE;
-}
+#define STEADYSTATE_MSEC 1000
#endif