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
37 struct io_sample_offset {
51 #define DEF_LOG_ENTRIES 1024
52 #define MAX_LOG_ENTRIES (1024 * DEF_LOG_ENTRIES)
55 struct flist_head list;
62 * Dynamically growing data sample log
66 * Entries already logged
68 struct flist_head io_logs;
72 * When the current log runs out of space, store events here until
73 * we have a chance to regrow
75 struct io_logs *pending;
77 unsigned int log_ddir_mask;
81 struct thread_data *td;
83 unsigned int log_type;
86 * If we fail extending the log, stop collecting more entries.
93 unsigned int log_offset;
96 * Max size of log entries before a chunk is compressed
101 * Don't deflate for storing, just store the compressed bits
103 unsigned int log_gz_store;
106 * Windowed average, for logging single entries average over some
109 struct io_stat avg_window[DDIR_RWDIR_CNT];
110 unsigned long avg_msec;
111 unsigned long avg_last;
114 * Windowed latency histograms, for keeping track of when we need to
115 * save a copy of the histogram every approximately hist_msec
118 struct io_hist hist_window[DDIR_RWDIR_CNT];
119 unsigned long hist_msec;
122 pthread_mutex_t chunk_lock;
123 unsigned int chunk_seq;
124 struct flist_head chunk_list;
128 * If the upper bit is set, then we have the offset as well
130 #define LOG_OFFSET_SAMPLE_BIT 0x80000000U
131 #define io_sample_ddir(io) ((io)->__ddir & ~LOG_OFFSET_SAMPLE_BIT)
133 static inline void io_sample_set_ddir(struct io_log *log,
134 struct io_sample *io,
137 io->__ddir = ddir | log->log_ddir_mask;
140 static inline size_t __log_entry_sz(int log_offset)
143 return sizeof(struct io_sample_offset);
145 return sizeof(struct io_sample);
148 static inline size_t log_entry_sz(struct io_log *log)
150 return __log_entry_sz(log->log_offset);
153 static inline struct io_sample *__get_sample(void *samples, int log_offset,
156 uint64_t sample_offset = sample * __log_entry_sz(log_offset);
157 return (struct io_sample *) ((char *) samples + sample_offset);
160 struct io_logs *iolog_cur_log(struct io_log *);
161 uint64_t iolog_nr_samples(struct io_log *);
162 void regrow_logs(struct thread_data *);
164 static inline struct io_sample *get_sample(struct io_log *iolog,
165 struct io_logs *cur_log,
168 return __get_sample(cur_log->log, iolog->log_offset, sample);
179 * When logging io actions, this matches a single sent io_u
183 struct rb_node rb_node;
184 struct flist_head list;
186 struct flist_head trim_list;
189 struct fio_file *file;
191 unsigned long long offset;
192 unsigned short numberio;
198 unsigned int file_action;
213 extern int __must_check read_iolog_get(struct thread_data *, struct io_u *);
214 extern void log_io_u(const struct thread_data *, const struct io_u *);
215 extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act);
216 extern int __must_check init_iolog(struct thread_data *td);
217 extern void log_io_piece(struct thread_data *, struct io_u *);
218 extern void unlog_io_piece(struct thread_data *, struct io_u *);
219 extern void trim_io_piece(struct thread_data *, const struct io_u *);
220 extern void queue_io_piece(struct thread_data *, struct io_piece *);
221 extern void prune_io_piece_log(struct thread_data *);
222 extern void write_iolog_close(struct thread_data *);
223 extern int iolog_compress_init(struct thread_data *, struct sk_out *);
224 extern void iolog_compress_exit(struct thread_data *);
225 extern size_t log_chunk_sizes(struct io_log *);
228 extern int iolog_file_inflate(const char *);
235 struct thread_data *td;
236 unsigned long avg_msec;
237 unsigned long hist_msec;
246 static inline bool per_unit_log(struct io_log *log)
248 return log && !log->avg_msec;
251 static inline bool inline_log(struct io_log *log)
253 return log->log_type == IO_LOG_TYPE_LAT ||
254 log->log_type == IO_LOG_TYPE_CLAT ||
255 log->log_type == IO_LOG_TYPE_SLAT;
258 extern void finalize_logs(struct thread_data *td, bool);
259 extern void setup_log(struct io_log **, struct log_params *, const char *);
260 extern void flush_log(struct io_log *, bool);
261 extern void flush_samples(FILE *, void *, uint64_t);
262 extern void free_log(struct io_log *);
263 extern void fio_writeout_logs(bool);
264 extern void td_writeout_logs(struct thread_data *, bool);
265 extern int iolog_cur_flush(struct io_log *, struct io_logs *);
267 static inline void init_ipo(struct io_piece *ipo)
269 memset(ipo, 0, sizeof(*ipo));
270 INIT_FLIST_HEAD(&ipo->trim_list);
273 struct iolog_compress {
274 struct flist_head list;