4 #include "lib/rbtree.h"
5 #include "lib/ieee754.h"
10 * Use for maintaining statistics
23 unsigned long hist_last;
27 * A single data sample
36 struct io_sample_offset {
50 #define DEF_LOG_ENTRIES 1024
51 #define MAX_LOG_ENTRIES (1024 * DEF_LOG_ENTRIES)
54 struct flist_head list;
61 * Dynamically growing data sample log
65 * Entries already logged
67 struct flist_head io_logs;
71 * When the current log runs out of space, store events here until
72 * we have a chance to regrow
74 struct io_logs *pending;
76 unsigned int log_ddir_mask;
80 struct thread_data *td;
82 unsigned int log_type;
85 * If we fail extending the log, stop collecting more entries.
92 unsigned int log_offset;
95 * Max size of log entries before a chunk is compressed
100 * Don't deflate for storing, just store the compressed bits
102 unsigned int log_gz_store;
105 * Windowed average, for logging single entries average over some
108 struct io_stat avg_window[DDIR_RWDIR_CNT];
109 unsigned long avg_msec;
110 unsigned long avg_last;
113 * Windowed latency histograms, for keeping track of when we need to
114 * save a copy of the histogram every approximately hist_msec milliseconds.
116 struct io_hist hist_window[DDIR_RWDIR_CNT];
117 unsigned long hist_msec;
120 pthread_mutex_t chunk_lock;
121 unsigned int chunk_seq;
122 struct flist_head chunk_list;
126 * If the upper bit is set, then we have the offset as well
128 #define LOG_OFFSET_SAMPLE_BIT 0x80000000U
129 #define io_sample_ddir(io) ((io)->__ddir & ~LOG_OFFSET_SAMPLE_BIT)
131 static inline void io_sample_set_ddir(struct io_log *log,
132 struct io_sample *io,
135 io->__ddir = ddir | log->log_ddir_mask;
138 static inline size_t __log_entry_sz(int log_offset)
141 return sizeof(struct io_sample_offset);
143 return sizeof(struct io_sample);
146 static inline size_t log_entry_sz(struct io_log *log)
148 return __log_entry_sz(log->log_offset);
151 static inline struct io_sample *__get_sample(void *samples, int log_offset,
154 uint64_t sample_offset = sample * __log_entry_sz(log_offset);
155 return (struct io_sample *) ((char *) samples + sample_offset);
158 struct io_logs *iolog_cur_log(struct io_log *);
159 uint64_t iolog_nr_samples(struct io_log *);
160 void regrow_logs(struct thread_data *);
162 static inline struct io_sample *get_sample(struct io_log *iolog,
163 struct io_logs *cur_log,
166 return __get_sample(cur_log->log, iolog->log_offset, sample);
177 * When logging io actions, this matches a single sent io_u
181 struct rb_node rb_node;
182 struct flist_head list;
184 struct flist_head trim_list;
187 struct fio_file *file;
189 unsigned long long offset;
190 unsigned short numberio;
196 unsigned int file_action;
211 extern int __must_check read_iolog_get(struct thread_data *, struct io_u *);
212 extern void log_io_u(const struct thread_data *, const struct io_u *);
213 extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act);
214 extern int __must_check init_iolog(struct thread_data *td);
215 extern void log_io_piece(struct thread_data *, struct io_u *);
216 extern void unlog_io_piece(struct thread_data *, struct io_u *);
217 extern void trim_io_piece(struct thread_data *, const struct io_u *);
218 extern void queue_io_piece(struct thread_data *, struct io_piece *);
219 extern void prune_io_piece_log(struct thread_data *);
220 extern void write_iolog_close(struct thread_data *);
221 extern int iolog_compress_init(struct thread_data *, struct sk_out *);
222 extern void iolog_compress_exit(struct thread_data *);
223 extern size_t log_chunk_sizes(struct io_log *);
226 extern int iolog_file_inflate(const char *);
233 struct thread_data *td;
234 unsigned long avg_msec;
235 unsigned long hist_msec;
244 static inline bool per_unit_log(struct io_log *log)
246 return log && !log->avg_msec;
249 static inline bool inline_log(struct io_log *log)
251 return log->log_type == IO_LOG_TYPE_LAT ||
252 log->log_type == IO_LOG_TYPE_CLAT ||
253 log->log_type == IO_LOG_TYPE_SLAT;
256 extern void finalize_logs(struct thread_data *td, bool);
257 extern void setup_log(struct io_log **, struct log_params *, const char *);
258 extern void flush_log(struct io_log *, bool);
259 extern void flush_samples(FILE *, void *, uint64_t);
260 extern void free_log(struct io_log *);
261 extern void fio_writeout_logs(bool);
262 extern void td_writeout_logs(struct thread_data *, bool);
263 extern int iolog_cur_flush(struct io_log *, struct io_logs *);
265 static inline void init_ipo(struct io_piece *ipo)
267 memset(ipo, 0, sizeof(*ipo));
268 INIT_FLIST_HEAD(&ipo->trim_list);
271 struct iolog_compress {
272 struct flist_head list;