#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 bool steadystate_deviation(unsigned long, unsigned long, struct thread_data *);
-extern bool steadystate_slope(unsigned long, unsigned long, struct thread_data *);
-#endif
+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