#ifndef FIO_IOLOG_H
#define FIO_IOLOG_H
+#include <stdio.h>
+
#include "lib/rbtree.h"
#include "lib/ieee754.h"
#include "flist.h"
-#include "ioengine.h"
+#include "ioengines.h"
/*
* Use for maintaining statistics
fio_fp64_t S;
};
+struct io_hist {
+ uint64_t samples;
+ unsigned long hist_last;
+ struct flist_head list;
+};
+
+
+union io_sample_data {
+ uint64_t val;
+ struct io_u_plat_entry *plat_entry;
+};
+
+#define sample_val(value) ((union io_sample_data) { .val = value })
+#define sample_plat(plat) ((union io_sample_data) { .plat_entry = plat })
+
/*
* A single data sample
*/
struct io_sample {
uint64_t time;
- uint64_t val;
+ union io_sample_data data;
uint32_t __ddir;
uint32_t bs;
};
IO_LOG_TYPE_SLAT,
IO_LOG_TYPE_BW,
IO_LOG_TYPE_IOPS,
+ IO_LOG_TYPE_HIST,
};
#define DEF_LOG_ENTRIES 1024
#define MAX_LOG_ENTRIES (1024 * DEF_LOG_ENTRIES)
-#define LOG_QUIESCE_SZ (64 * 1024 * 1024)
-
struct io_logs {
struct flist_head list;
uint64_t nr_samples;
*/
struct io_stat avg_window[DDIR_RWDIR_CNT];
unsigned long avg_msec;
- unsigned long avg_last;
+ unsigned long avg_last[DDIR_RWDIR_CNT];
+
+ /*
+ * Windowed latency histograms, for keeping track of when we need to
+ * save a copy of the histogram every approximately hist_msec
+ * milliseconds.
+ */
+ struct io_hist hist_window[DDIR_RWDIR_CNT];
+ unsigned long hist_msec;
+ unsigned int hist_coarseness;
pthread_mutex_t chunk_lock;
unsigned int chunk_seq;
struct flist_head chunk_list;
+
+ pthread_mutex_t deferred_free_lock;
+#define IOLOG_MAX_DEFER 8
+ void *deferred_items[IOLOG_MAX_DEFER];
+ unsigned int deferred;
};
/*
return __log_entry_sz(log->log_offset);
}
+static inline size_t log_sample_sz(struct io_log *log, struct io_logs *cur_log)
+{
+ return cur_log->nr_samples * log_entry_sz(log);
+}
+
static inline struct io_sample *__get_sample(void *samples, int log_offset,
uint64_t sample)
{
*/
struct io_piece {
union {
- struct rb_node rb_node;
+ struct fio_rb_node rb_node;
struct flist_head list;
};
struct flist_head trim_list;
struct log_params {
struct thread_data *td;
unsigned long avg_msec;
+ unsigned long hist_msec;
+ int hist_coarseness;
int log_type;
int log_offset;
int log_gz;
static inline bool per_unit_log(struct io_log *log)
{
- return log && !log->avg_msec;
+ return log && (!log->avg_msec || log->log_gz || log->log_gz_store);
+}
+
+static inline bool inline_log(struct io_log *log)
+{
+ return log->log_type == IO_LOG_TYPE_LAT ||
+ log->log_type == IO_LOG_TYPE_CLAT ||
+ log->log_type == IO_LOG_TYPE_SLAT;
+}
+
+static inline void ipo_bytes_align(unsigned int replay_align, struct io_piece *ipo)
+{
+ if (!replay_align)
+ return;
+
+ ipo->offset &= ~(replay_align - (uint64_t)1);
}
extern void finalize_logs(struct thread_data *td, bool);
extern void setup_log(struct io_log **, struct log_params *, const char *);
-extern void flush_log(struct io_log *, int);
+extern void flush_log(struct io_log *, bool);
extern void flush_samples(FILE *, void *, uint64_t);
+extern uint64_t hist_sum(int, int, uint64_t *, uint64_t *);
extern void free_log(struct io_log *);
extern void fio_writeout_logs(bool);
extern void td_writeout_logs(struct thread_data *, bool);