#ifndef FIO_STEADYSTATE_H
#define FIO_STEADYSTATE_H
+#include "thread_options.h"
+
extern void steadystate_check(void);
extern void steadystate_setup(void);
-extern void steadystate_alloc(struct thread_data *);
-extern bool steadystate_deviation(unsigned long, unsigned long, struct thread_data *);
-extern bool steadystate_slope(unsigned long, unsigned long, struct thread_data *);
-#endif
+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 attained;
+ 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_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