4 #include "lib/rbtree.h"
5 #include "lib/ieee754.h"
10 * Use for maintaining statistics
23 unsigned long hist_last;
24 struct flist_head list;
28 * A single data sample
34 struct io_u_plat_entry *plat_entry;
40 struct io_sample_offset {
54 #define DEF_LOG_ENTRIES 1024
55 #define MAX_LOG_ENTRIES (1024 * DEF_LOG_ENTRIES)
58 struct flist_head list;
65 * Dynamically growing data sample log
69 * Entries already logged
71 struct flist_head io_logs;
75 * When the current log runs out of space, store events here until
76 * we have a chance to regrow
78 struct io_logs *pending;
80 unsigned int log_ddir_mask;
84 struct thread_data *td;
86 unsigned int log_type;
89 * If we fail extending the log, stop collecting more entries.
96 unsigned int log_offset;
99 * Max size of log entries before a chunk is compressed
104 * Don't deflate for storing, just store the compressed bits
106 unsigned int log_gz_store;
109 * Windowed average, for logging single entries average over some
112 struct io_stat avg_window[DDIR_RWDIR_CNT];
113 unsigned long avg_msec;
114 unsigned long avg_last;
117 * Windowed latency histograms, for keeping track of when we need to
118 * save a copy of the histogram every approximately hist_msec
121 struct io_hist hist_window[DDIR_RWDIR_CNT];
122 unsigned long hist_msec;
123 unsigned int hist_coarseness;
125 pthread_mutex_t chunk_lock;
126 unsigned int chunk_seq;
127 struct flist_head chunk_list;
131 * If the upper bit is set, then we have the offset as well
133 #define LOG_OFFSET_SAMPLE_BIT 0x80000000U
134 #define io_sample_ddir(io) ((io)->__ddir & ~LOG_OFFSET_SAMPLE_BIT)
136 static inline void io_sample_set_ddir(struct io_log *log,
137 struct io_sample *io,
140 io->__ddir = ddir | log->log_ddir_mask;
143 static inline size_t __log_entry_sz(int log_offset)
146 return sizeof(struct io_sample_offset);
148 return sizeof(struct io_sample);
151 static inline size_t log_entry_sz(struct io_log *log)
153 return __log_entry_sz(log->log_offset);
156 static inline size_t log_sample_sz(struct io_log *log, struct io_logs *cur_log)
158 return cur_log->nr_samples * log_entry_sz(log);
161 static inline struct io_sample *__get_sample(void *samples, int log_offset,
164 uint64_t sample_offset = sample * __log_entry_sz(log_offset);
165 return (struct io_sample *) ((char *) samples + sample_offset);
168 struct io_logs *iolog_cur_log(struct io_log *);
169 uint64_t iolog_nr_samples(struct io_log *);
170 void regrow_logs(struct thread_data *);
172 static inline struct io_sample *get_sample(struct io_log *iolog,
173 struct io_logs *cur_log,
176 return __get_sample(cur_log->log, iolog->log_offset, sample);
187 * When logging io actions, this matches a single sent io_u
191 struct rb_node rb_node;
192 struct flist_head list;
194 struct flist_head trim_list;
197 struct fio_file *file;
199 unsigned long long offset;
200 unsigned short numberio;
206 unsigned int file_action;
221 extern int __must_check read_iolog_get(struct thread_data *, struct io_u *);
222 extern void log_io_u(const struct thread_data *, const struct io_u *);
223 extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act);
224 extern int __must_check init_iolog(struct thread_data *td);
225 extern void log_io_piece(struct thread_data *, struct io_u *);
226 extern void unlog_io_piece(struct thread_data *, struct io_u *);
227 extern void trim_io_piece(struct thread_data *, const struct io_u *);
228 extern void queue_io_piece(struct thread_data *, struct io_piece *);
229 extern void prune_io_piece_log(struct thread_data *);
230 extern void write_iolog_close(struct thread_data *);
231 extern int iolog_compress_init(struct thread_data *, struct sk_out *);
232 extern void iolog_compress_exit(struct thread_data *);
233 extern size_t log_chunk_sizes(struct io_log *);
236 extern int iolog_file_inflate(const char *);
243 struct thread_data *td;
244 unsigned long avg_msec;
245 unsigned long hist_msec;
254 static inline bool per_unit_log(struct io_log *log)
256 return log && !log->avg_msec;
259 static inline bool inline_log(struct io_log *log)
261 return log->log_type == IO_LOG_TYPE_LAT ||
262 log->log_type == IO_LOG_TYPE_CLAT ||
263 log->log_type == IO_LOG_TYPE_SLAT;
266 extern void finalize_logs(struct thread_data *td, bool);
267 extern void setup_log(struct io_log **, struct log_params *, const char *);
268 extern void flush_log(struct io_log *, bool);
269 extern void flush_samples(FILE *, void *, uint64_t);
270 extern unsigned long hist_sum(int, int, unsigned int *, unsigned int *);
271 extern void free_log(struct io_log *);
272 extern void fio_writeout_logs(bool);
273 extern void td_writeout_logs(struct thread_data *, bool);
274 extern int iolog_cur_flush(struct io_log *, struct io_logs *);
276 static inline void init_ipo(struct io_piece *ipo)
278 memset(ipo, 0, sizeof(*ipo));
279 INIT_FLIST_HEAD(&ipo->trim_list);
282 struct iolog_compress {
283 struct flist_head list;