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iolog: sum last chunk length to total
[fio.git] / iolog.h
CommitLineData
5995a6a4
JA		 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
5995a6a4
JA		 9/*
10 * Use for maintaining statistics
11 */
12struct io_stat {
7b9f733a
JA		 13 uint64_t max_val;
14 uint64_t min_val;
15 uint64_t samples;
5995a6a4 16
802ad4a8
JA		 17 fio_fp64_t mean;
18 fio_fp64_t S;
5995a6a4
JA		 19};
20
21/*
22 * A single data sample
23 */
24struct io_sample {
1b42725f
JA		 25 uint64_t time;
26 uint64_t val;
b26317c9 27 uint32_t __ddir;
1b42725f 28 uint32_t bs;
5995a6a4
JA		 29};
30
ae588852
JA		 31struct io_sample_offset {
32 struct io_sample s;
33 uint64_t offset;
34};
35
ea51b956
JA		 36enum {
37 IO_LOG_TYPE_LAT = 1,
38 IO_LOG_TYPE_CLAT,
39 IO_LOG_TYPE_SLAT,
40 IO_LOG_TYPE_BW,
41 IO_LOG_TYPE_IOPS,
42};
43
6d37f67f 44#define DEF_LOG_ENTRIES 1024
7e419452
JA		 45#define MAX_LOG_ENTRIES (1024 * DEF_LOG_ENTRIES)
46
47#define LOG_QUIESCE_SZ (64 * 1024 * 1024)
48
49struct io_logs {
50 struct flist_head list;
51 uint64_t nr_samples;
52 uint64_t max_samples;
53 void *log;
54};
6d37f67f 55
5995a6a4
JA		 56/*
57 * Dynamically growing data sample log
58 */
59struct io_log {
b8bc8cba
JA		 60 /*
61 * Entries already logged
62 */
7e419452
JA		 63 struct flist_head io_logs;
64 uint32_t cur_log_max;
b8bc8cba 65
b26317c9
JA		 66 unsigned int log_ddir_mask;
67
cb7e0ace
JA		 68 char *filename;
69
aee2ab67
JA		 70 struct thread_data *td;
71
1b42725f 72 unsigned int log_type;
ea51b956 73
3c568239
JA		 74 /*
75 * If we fail extending the log, stop collecting more entries.
76 */
7e419452 77 bool disabled;
3c568239 78
ae588852
JA		 79 /*
80 * Log offsets
81 */
82 unsigned int log_offset;
83
aee2ab67
JA		 84 /*
85 * Max size of log entries before a chunk is compressed
86 */
87 unsigned int log_gz;
88
b26317c9
JA		 89 /*
90 * Don't deflate for storing, just store the compressed bits
91 */
92 unsigned int log_gz_store;
93
b8bc8cba
JA		 94 /*
95 * Windowed average, for logging single entries average over some
96 * period of time.
97 */
6eaf09d6 98 struct io_stat avg_window[DDIR_RWDIR_CNT];
b8bc8cba
JA		 99 unsigned long avg_msec;
100 unsigned long avg_last;
aee2ab67
JA		 101
102 pthread_mutex_t chunk_lock;
103 unsigned int chunk_seq;
104 struct flist_head chunk_list;
5995a6a4
JA		 105};
106
49e98daa
JA		 107/*
108 * If the upper bit is set, then we have the offset as well
109 */
110#define LOG_OFFSET_SAMPLE_BIT 0x80000000U
111#define io_sample_ddir(io) ((io)->__ddir & ~LOG_OFFSET_SAMPLE_BIT)
b26317c9
JA		 112
113static inline void io_sample_set_ddir(struct io_log *log,
114 struct io_sample *io,
115 enum fio_ddir ddir)
116{
117 io->__ddir = ddir | log->log_ddir_mask;
118}
119
ae588852
JA		 120static inline size_t __log_entry_sz(int log_offset)
121{
122 if (log_offset)
123 return sizeof(struct io_sample_offset);
124 else
125 return sizeof(struct io_sample);
126}
127
128static inline size_t log_entry_sz(struct io_log *log)
129{
130 return __log_entry_sz(log->log_offset);
131}
132
133static inline struct io_sample *__get_sample(void *samples, int log_offset,
134 uint64_t sample)
135{
6f9bbb55
CB		 136 uint64_t sample_offset = sample * __log_entry_sz(log_offset);
137 return (struct io_sample *) ((char *) samples + sample_offset);
ae588852
JA		 138}
139
7e419452
JA		 140struct io_logs *iolog_cur_log(struct io_log *);
141uint64_t iolog_nr_samples(struct io_log *);
142
ae588852 143static inline struct io_sample *get_sample(struct io_log *iolog,
7e419452 144 struct io_logs *cur_log,
ae588852
JA		 145 uint64_t sample)
146{
7e419452 147 return __get_sample(cur_log->log, iolog->log_offset, sample);
ae588852
JA		 148}
149
0d29de83
JA		 150enum {
151 IP_F_ONRB = 1,
152 IP_F_ONLIST = 2,
153 IP_F_TRIMMED = 4,
f9401285 154 IP_F_IN_FLIGHT = 8,
0d29de83
JA		 155};
156
5995a6a4
JA		 157/*
158 * When logging io actions, this matches a single sent io_u
159 */
160struct io_piece {
161 union {
162 struct rb_node rb_node;
163 struct flist_head list;
164 };
0d29de83 165 struct flist_head trim_list;
5995a6a4
JA		 166 union {
167 int fileno;
168 struct fio_file *file;
169 };
170 unsigned long long offset;
da0a7bd2 171 unsigned short numberio;
5995a6a4 172 unsigned long len;
a917a8b3 173 unsigned int flags;
5995a6a4
JA		 174 enum fio_ddir ddir;
175 union {
176 unsigned long delay;
177 unsigned int file_action;
178 };
179};
180
181/*
182 * Log exports
183 */
184enum file_log_act {
185 FIO_LOG_ADD_FILE,
186 FIO_LOG_OPEN_FILE,
187 FIO_LOG_CLOSE_FILE,
188 FIO_LOG_UNLINK_FILE,
189};
190
8062f527 191struct io_u;
5995a6a4 192extern int __must_check read_iolog_get(struct thread_data *, struct io_u *);
1f440ece 193extern void log_io_u(const struct thread_data *, const struct io_u *);
5995a6a4
JA		 194extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act);
195extern int __must_check init_iolog(struct thread_data *td);
196extern void log_io_piece(struct thread_data *, struct io_u *);
890b6656 197extern void unlog_io_piece(struct thread_data *, struct io_u *);
1f440ece 198extern void trim_io_piece(struct thread_data *, const struct io_u *);
5995a6a4
JA		 199extern void queue_io_piece(struct thread_data *, struct io_piece *);
200extern void prune_io_piece_log(struct thread_data *);
201extern void write_iolog_close(struct thread_data *);
24660963 202extern int iolog_compress_init(struct thread_data *, struct sk_out *);
155f2f02 203extern void iolog_compress_exit(struct thread_data *);
0cba0f91 204extern size_t log_chunk_sizes(struct io_log *);
5995a6a4 205
b26317c9
JA		 206#ifdef CONFIG_ZLIB
207extern int iolog_file_inflate(const char *);
208#endif
209
5995a6a4
JA		 210/*
211 * Logging
212 */
aee2ab67
JA		 213struct log_params {
214 struct thread_data *td;
215 unsigned long avg_msec;
216 int log_type;
217 int log_offset;
218 int log_gz;
b26317c9 219 int log_gz_store;
aee2ab67
JA		 220 int log_compress;
221};
222
a47591e4
JA		 223static inline bool per_unit_log(struct io_log *log)
224{
225 return log && !log->avg_msec;
226}
227
228extern void finalize_logs(struct thread_data *td, bool);
aee2ab67 229extern void setup_log(struct io_log **, struct log_params *, const char *);
3a5db920 230extern void flush_log(struct io_log *, int);
bead01d7 231extern void flush_samples(FILE *, void *, uint64_t);
518dac09 232extern void free_log(struct io_log *);
a47591e4
JA		 233extern void fio_writeout_logs(bool);
234extern void td_writeout_logs(struct thread_data *, bool);
7e419452 235extern int iolog_cur_flush(struct io_log *, struct io_logs *);
5995a6a4 236
0d29de83
JA		 237static inline void init_ipo(struct io_piece *ipo)
238{
239 memset(ipo, 0, sizeof(*ipo));
240 INIT_FLIST_HEAD(&ipo->trim_list);
241}
242
0cba0f91
JA		 243struct iolog_compress {
244 struct flist_head list;
245 void *buf;
246 size_t len;
247 unsigned int seq;
248};
249
5995a6a4 250#endif
fio - Flexible IO Tester