#include "thread_options.h"
-extern void steadystate_check(void);
+extern void steadystate_free(struct thread_data *);
+extern int steadystate_check(void);
extern void steadystate_setup(void);
-extern void td_steadystate_init(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_enabled;
-/*
- * For steady state detection
- */
struct steadystate_data {
double limit;
unsigned long long dur;
unsigned long long ramp_time;
- bool pct;
- unsigned int state;
+ 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;
+
+ uint64_t sum_y;
+ uint64_t sum_x;
+ uint64_t sum_x_sq;
+ uint64_t sum_xy;
+ uint64_t oldest_y;
- 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 timespec prev_time;
+ uint64_t prev_iops;
+ uint64_t prev_bytes;
+};
- struct timeval prev_time;
- unsigned long long prev_iops;
- unsigned long long 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_BW = 2,
- __FIO_SS_SLOPE = 4,
- __FIO_SS_ATTAINED = 8,
- __FIO_SS_RAMP_OVER = 16,
- __FIO_SS_LAST = 32,
-
- 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,
+ 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