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gerrit-public.fairphone.software / platform / external / fio / ec41265e81c70d8573d1359e27876c37c30c7d9d / . / iolog.h
blob: e790e7d6f1042c15cec42873eeb9feeeb13dcb14 [file] [log] [blame]
Jens Axboe5995a6a2009-06-03 08:53:28 +0200[diff] [blame]1#ifndef FIO_IOLOG_H
2#define FIO_IOLOG_H
3
Jens Axboeec412652012-03-08 12:37:31 +0100[diff] [blame^]4#include "rbtree.h"
Jens Axboec7c6cb42011-10-13 14:12:40 +0200[diff] [blame]5#include "lib/ieee754.h"
Jens Axboeec412652012-03-08 12:37:31 +0100[diff] [blame^]6#include "ioengine.h"
Jens Axboe802ad4a2011-10-05 09:51:58 +0200[diff] [blame]7
Jens Axboe5995a6a2009-06-03 08:53:28 +0200[diff] [blame]8/*
9 * Use for maintaining statistics
10 */
11struct io_stat {
Jens Axboe7b9f7332011-10-03 10:06:44 +0200[diff] [blame]12 uint64_t max_val;
13 uint64_t min_val;
14 uint64_t samples;
Jens Axboe5995a6a2009-06-03 08:53:28 +0200[diff] [blame]15
Jens Axboe802ad4a2011-10-05 09:51:58 +0200[diff] [blame]16 fio_fp64_t mean;
17 fio_fp64_t S;
Jens Axboe5995a6a2009-06-03 08:53:28 +0200[diff] [blame]18};
19
20/*
21 * A single data sample
22 */
23struct io_sample {
24 unsigned long time;
25 unsigned long val;
26 enum fio_ddir ddir;
27 unsigned int bs;
28};
29
30/*
31 * Dynamically growing data sample log
32 */
33struct io_log {
Jens Axboeb8bc8cb2011-12-01 09:04:31 +0100[diff] [blame]34 /*
35 * Entries already logged
36 */
Jens Axboe5995a6a2009-06-03 08:53:28 +0200[diff] [blame]37 unsigned long nr_samples;
38 unsigned long max_samples;
39 struct io_sample *log;
Jens Axboeb8bc8cb2011-12-01 09:04:31 +0100[diff] [blame]40
41 /*
42 * Windowed average, for logging single entries average over some
43 * period of time.
44 */
45 struct io_stat avg_window[2];
46 unsigned long avg_msec;
47 unsigned long avg_last;
Jens Axboe5995a6a2009-06-03 08:53:28 +0200[diff] [blame]48};
49
Jens Axboe0d29de82010-09-01 13:54:15 +0200[diff] [blame]50enum {
51 IP_F_ONRB = 1,
52 IP_F_ONLIST = 2,
53 IP_F_TRIMMED = 4,
54};
55
Jens Axboe5995a6a2009-06-03 08:53:28 +0200[diff] [blame]56/*
57 * When logging io actions, this matches a single sent io_u
58 */
59struct io_piece {
60 union {
61 struct rb_node rb_node;
62 struct flist_head list;
63 };
Jens Axboe0d29de82010-09-01 13:54:15 +0200[diff] [blame]64 struct flist_head trim_list;
Jens Axboe5995a6a2009-06-03 08:53:28 +0200[diff] [blame]65 union {
66 int fileno;
67 struct fio_file *file;
68 };
69 unsigned long long offset;
70 unsigned long len;
Jens Axboea917a8b2010-09-02 13:23:20 +0200[diff] [blame]71 unsigned int flags;
Jens Axboe5995a6a2009-06-03 08:53:28 +0200[diff] [blame]72 enum fio_ddir ddir;
73 union {
74 unsigned long delay;
75 unsigned int file_action;
76 };
77};
78
79/*
80 * Log exports
81 */
82enum file_log_act {
83 FIO_LOG_ADD_FILE,
84 FIO_LOG_OPEN_FILE,
85 FIO_LOG_CLOSE_FILE,
86 FIO_LOG_UNLINK_FILE,
87};
88
89extern int __must_check read_iolog_get(struct thread_data *, struct io_u *);
90extern void log_io_u(struct thread_data *, struct io_u *);
91extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act);
92extern int __must_check init_iolog(struct thread_data *td);
93extern void log_io_piece(struct thread_data *, struct io_u *);
94extern void queue_io_piece(struct thread_data *, struct io_piece *);
95extern void prune_io_piece_log(struct thread_data *);
96extern void write_iolog_close(struct thread_data *);
97
98/*
99 * Logging
100 */
Jens Axboe02af0982010-06-24 09:59:34 +0200[diff] [blame]101extern void add_lat_sample(struct thread_data *, enum fio_ddir, unsigned long,
102 unsigned int);
Jens Axboe5995a6a2009-06-03 08:53:28 +0200[diff] [blame]103extern void add_clat_sample(struct thread_data *, enum fio_ddir, unsigned long,
104 unsigned int);
105extern void add_slat_sample(struct thread_data *, enum fio_ddir, unsigned long,
106 unsigned int);
107extern void add_bw_sample(struct thread_data *, enum fio_ddir, unsigned int,
108 struct timeval *);
Jens Axboec8eeb9d2011-10-05 14:02:22 +0200[diff] [blame]109extern void add_iops_sample(struct thread_data *, enum fio_ddir, struct timeval *);
Jens Axboe5995a6a2009-06-03 08:53:28 +0200[diff] [blame]110extern void init_disk_util(struct thread_data *);
111extern void update_rusage_stat(struct thread_data *);
112extern void update_io_ticks(void);
Jens Axboeb8bc8cb2011-12-01 09:04:31 +0100[diff] [blame]113extern void setup_log(struct io_log **, unsigned long);
Jens Axboe5995a6a2009-06-03 08:53:28 +0200[diff] [blame]114extern void finish_log(struct thread_data *, struct io_log *, const char *);
115extern void finish_log_named(struct thread_data *, struct io_log *, const char *, const char *);
116extern void __finish_log(struct io_log *, const char *);
117extern struct io_log *agg_io_log[2];
118extern int write_bw_log;
119extern void add_agg_sample(unsigned long, enum fio_ddir, unsigned int);
120
Jens Axboe0d29de82010-09-01 13:54:15 +0200[diff] [blame]121static inline void init_ipo(struct io_piece *ipo)
122{
123 memset(ipo, 0, sizeof(*ipo));
124 INIT_FLIST_HEAD(&ipo->trim_list);
125}
126
Jens Axboe5995a6a2009-06-03 08:53:28 +0200[diff] [blame]127#endif