verify: always log IO in the order they are issued
[fio.git] / iolog.h
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1#ifndef FIO_IOLOG_H
2#define FIO_IOLOG_H
3
05775438 4#include "lib/rbtree.h"
c7c6cb4c 5#include "lib/ieee754.h"
836fcc0f 6#include "flist.h"
ec41265e 7#include "ioengine.h"
802ad4a8 8
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9/*
10 * Use for maintaining statistics
11 */
12struct io_stat {
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13 uint64_t max_val;
14 uint64_t min_val;
15 uint64_t samples;
5995a6a4 16
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17 fio_fp64_t mean;
18 fio_fp64_t S;
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19};
20
21/*
22 * A single data sample
23 */
24struct io_sample {
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25 uint64_t time;
26 uint64_t val;
27 uint32_t ddir;
28 uint32_t bs;
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29};
30
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31enum {
32 IO_LOG_TYPE_LAT = 1,
33 IO_LOG_TYPE_CLAT,
34 IO_LOG_TYPE_SLAT,
35 IO_LOG_TYPE_BW,
36 IO_LOG_TYPE_IOPS,
37};
38
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39/*
40 * Dynamically growing data sample log
41 */
42struct io_log {
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43 /*
44 * Entries already logged
45 */
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46 unsigned long nr_samples;
47 unsigned long max_samples;
48 struct io_sample *log;
b8bc8cba 49
1b42725f 50 unsigned int log_type;
ea51b956 51
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52 /*
53 * If we fail extending the log, stop collecting more entries.
54 */
55 unsigned int disabled;
56
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57 /*
58 * Windowed average, for logging single entries average over some
59 * period of time.
60 */
6eaf09d6 61 struct io_stat avg_window[DDIR_RWDIR_CNT];
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62 unsigned long avg_msec;
63 unsigned long avg_last;
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64};
65
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66enum {
67 IP_F_ONRB = 1,
68 IP_F_ONLIST = 2,
69 IP_F_TRIMMED = 4,
f9401285 70 IP_F_IN_FLIGHT = 8,
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71};
72
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73/*
74 * When logging io actions, this matches a single sent io_u
75 */
76struct io_piece {
77 union {
78 struct rb_node rb_node;
79 struct flist_head list;
80 };
0d29de83 81 struct flist_head trim_list;
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82 union {
83 int fileno;
84 struct fio_file *file;
85 };
86 unsigned long long offset;
da0a7bd2 87 unsigned short numberio;
5995a6a4 88 unsigned long len;
a917a8b3 89 unsigned int flags;
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90 enum fio_ddir ddir;
91 union {
92 unsigned long delay;
93 unsigned int file_action;
94 };
95};
96
97/*
98 * Log exports
99 */
100enum file_log_act {
101 FIO_LOG_ADD_FILE,
102 FIO_LOG_OPEN_FILE,
103 FIO_LOG_CLOSE_FILE,
104 FIO_LOG_UNLINK_FILE,
105};
106
8062f527 107struct io_u;
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108extern int __must_check read_iolog_get(struct thread_data *, struct io_u *);
109extern void log_io_u(struct thread_data *, struct io_u *);
110extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act);
111extern int __must_check init_iolog(struct thread_data *td);
112extern void log_io_piece(struct thread_data *, struct io_u *);
113extern void queue_io_piece(struct thread_data *, struct io_piece *);
114extern void prune_io_piece_log(struct thread_data *);
115extern void write_iolog_close(struct thread_data *);
116
117/*
118 * Logging
119 */
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120extern void add_lat_sample(struct thread_data *, enum fio_ddir, unsigned long,
121 unsigned int);
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122extern void add_clat_sample(struct thread_data *, enum fio_ddir, unsigned long,
123 unsigned int);
124extern void add_slat_sample(struct thread_data *, enum fio_ddir, unsigned long,
125 unsigned int);
126extern void add_bw_sample(struct thread_data *, enum fio_ddir, unsigned int,
127 struct timeval *);
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128extern void add_iops_sample(struct thread_data *, enum fio_ddir, unsigned int,
129 struct timeval *);
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130extern void init_disk_util(struct thread_data *);
131extern void update_rusage_stat(struct thread_data *);
ea51b956 132extern void setup_log(struct io_log **, unsigned long, int);
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133extern void finish_log(struct thread_data *, struct io_log *, const char *);
134extern void finish_log_named(struct thread_data *, struct io_log *, const char *, const char *);
135extern void __finish_log(struct io_log *, const char *);
6eaf09d6 136extern struct io_log *agg_io_log[DDIR_RWDIR_CNT];
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137extern int write_bw_log;
138extern void add_agg_sample(unsigned long, enum fio_ddir, unsigned int);
139
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140static inline void init_ipo(struct io_piece *ipo)
141{
142 memset(ipo, 0, sizeof(*ipo));
143 INIT_FLIST_HEAD(&ipo->trim_list);
144}
145
5995a6a4 146#endif