Merge branch 'samples-colnames' of https://github.com/parallel-fs-utils/fio

[fio.git] / iolog.h

diff --git a/iolog.h b/iolog.h
index 0da70670c796ef1e8685394d88bb455a843d917b..17be908f6ef405a79a14627511e5bfbb50768d85 100644 (file)
--- a/iolog.h
+++ b/iolog.h
@@ -1,10 +1,12 @@
 #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
@@ -18,14 +20,29 @@ struct io_stat {
        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;
+       uint64_t bs;
 };
 
 struct io_sample_offset {
@@ -39,6 +56,7 @@ enum {
        IO_LOG_TYPE_SLAT,
        IO_LOG_TYPE_BW,
        IO_LOG_TYPE_IOPS,
+       IO_LOG_TYPE_HIST,
 };
 
 #define DEF_LOG_ENTRIES                1024
@@ -101,11 +119,25 @@ struct io_log {
         */
        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;
 };
 
 /*
@@ -134,6 +166,11 @@ static inline size_t log_entry_sz(struct io_log *log)
        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)
 {
@@ -164,7 +201,7 @@ enum {
  */
 struct io_piece {
        union {
-               struct rb_node rb_node;
+               struct fio_rb_node rb_node;
                struct flist_head list;
        };
        struct flist_head trim_list;
@@ -197,16 +234,17 @@ struct io_u;
 extern int __must_check read_iolog_get(struct thread_data *, struct io_u *);
 extern void log_io_u(const struct thread_data *, const struct io_u *);
 extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act);
-extern int __must_check init_iolog(struct thread_data *td);
+extern bool __must_check init_iolog(struct thread_data *td);
 extern void log_io_piece(struct thread_data *, struct io_u *);
 extern void unlog_io_piece(struct thread_data *, struct io_u *);
-extern void trim_io_piece(struct thread_data *, const struct io_u *);
+extern void trim_io_piece(const struct io_u *);
 extern void queue_io_piece(struct thread_data *, struct io_piece *);
 extern void prune_io_piece_log(struct thread_data *);
 extern void write_iolog_close(struct thread_data *);
 extern int iolog_compress_init(struct thread_data *, struct sk_out *);
 extern void iolog_compress_exit(struct thread_data *);
 extern size_t log_chunk_sizes(struct io_log *);
+extern int init_io_u_buffers(struct thread_data *);
 
 #ifdef CONFIG_ZLIB
 extern int iolog_file_inflate(const char *);
@@ -218,6 +256,8 @@ extern int iolog_file_inflate(const char *);
 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;
@@ -227,13 +267,29 @@ struct log_params {
 
 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);
@@ -241,7 +297,7 @@ extern int iolog_cur_flush(struct io_log *, struct io_logs *);
 
 static inline void init_ipo(struct io_piece *ipo)
 {
-       memset(ipo, 0, sizeof(*ipo));
+       INIT_FLIST_HEAD(&ipo->list);
        INIT_FLIST_HEAD(&ipo->trim_list);
 }