TODO: man page missing

[fio.git] / fio.h

diff --git a/fio.h b/fio.h
index e96a4dd1dcd1058071e20502d58003be38e88dae..ed2abe79618e210b3a316ec5edd0c94feacfd55b 100644 (file)
--- a/fio.h
+++ b/fio.h
@@ -122,6 +122,43 @@ struct zone_split_index {
        uint8_t size_perc_prev;
 };
 
+/*
+ * For steady state detection
+ */
+struct steadystate_data {
+       double limit;
+       unsigned long long dur;
+       unsigned long long ramp_time;
+       bool (*evaluate)(unsigned long, unsigned long, struct thread_data *);
+       bool check_iops;
+       bool check_slope;
+       bool pct;
+
+       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;
+};
+
+
 /*
  * This describes a single thread/process executing a fio job.
  */
@@ -394,6 +431,8 @@ struct thread_data {
 
        void *pinned_mem;
 
+       struct steadystate_data ss;
+
        char verror[FIO_VERROR_SIZE];
 };
 
@@ -469,6 +508,9 @@ extern char *trigger_remote_cmd;
 extern long long trigger_timeout;
 extern char *aux_path;
 
+extern bool steadystate;
+#define STEADYSTATE_MSEC (1000)
+
 extern struct thread_data *threads;
 
 static inline void fio_ro_check(const struct thread_data *td, struct io_u *io_u)
@@ -785,6 +827,14 @@ enum {
        FIO_CPUS_SPLIT,
 };
 
+enum {
+       FIO_STEADYSTATE_IOPS    = 0,
+       FIO_STEADYSTATE_IOPS_SLOPE,
+       FIO_STEADYSTATE_BW,
+       FIO_STEADYSTATE_BW_SLOPE,
+};
+
+
 extern void exec_trigger(const char *);
 extern void check_trigger_file(void);