4 #include "lib/rbtree.h"
5 #include "lib/ieee754.h"
10 * Use for maintaining statistics
22 * A single data sample
31 struct io_sample_offset {
44 #define DEF_LOG_ENTRIES 1024
45 #define MAX_LOG_ENTRIES (1024 * DEF_LOG_ENTRIES)
48 struct flist_head list;
55 * Dynamically growing data sample log
59 * Entries already logged
61 struct flist_head io_logs;
65 * When the current log runs out of space, store events here until
66 * we have a chance to regrow
68 struct io_logs *pending;
70 unsigned int log_ddir_mask;
74 struct thread_data *td;
76 unsigned int log_type;
79 * If we fail extending the log, stop collecting more entries.
86 unsigned int log_offset;
89 * Max size of log entries before a chunk is compressed
94 * Don't deflate for storing, just store the compressed bits
96 unsigned int log_gz_store;
99 * Windowed average, for logging single entries average over some
102 struct io_stat avg_window[DDIR_RWDIR_CNT];
103 unsigned long avg_msec;
104 unsigned long avg_last;
106 pthread_mutex_t chunk_lock;
107 unsigned int chunk_seq;
108 struct flist_head chunk_list;
112 * If the upper bit is set, then we have the offset as well
114 #define LOG_OFFSET_SAMPLE_BIT 0x80000000U
115 #define io_sample_ddir(io) ((io)->__ddir & ~LOG_OFFSET_SAMPLE_BIT)
117 static inline void io_sample_set_ddir(struct io_log *log,
118 struct io_sample *io,
121 io->__ddir = ddir | log->log_ddir_mask;
124 static inline size_t __log_entry_sz(int log_offset)
127 return sizeof(struct io_sample_offset);
129 return sizeof(struct io_sample);
132 static inline size_t log_entry_sz(struct io_log *log)
134 return __log_entry_sz(log->log_offset);
137 static inline struct io_sample *__get_sample(void *samples, int log_offset,
140 uint64_t sample_offset = sample * __log_entry_sz(log_offset);
141 return (struct io_sample *) ((char *) samples + sample_offset);
144 struct io_logs *iolog_cur_log(struct io_log *);
145 uint64_t iolog_nr_samples(struct io_log *);
146 void regrow_logs(struct thread_data *);
148 static inline struct io_sample *get_sample(struct io_log *iolog,
149 struct io_logs *cur_log,
152 return __get_sample(cur_log->log, iolog->log_offset, sample);
163 * When logging io actions, this matches a single sent io_u
167 struct rb_node rb_node;
168 struct flist_head list;
170 struct flist_head trim_list;
173 struct fio_file *file;
175 unsigned long long offset;
176 unsigned short numberio;
182 unsigned int file_action;
197 extern int __must_check read_iolog_get(struct thread_data *, struct io_u *);
198 extern void log_io_u(const struct thread_data *, const struct io_u *);
199 extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act);
200 extern int __must_check init_iolog(struct thread_data *td);
201 extern void log_io_piece(struct thread_data *, struct io_u *);
202 extern void unlog_io_piece(struct thread_data *, struct io_u *);
203 extern void trim_io_piece(struct thread_data *, const struct io_u *);
204 extern void queue_io_piece(struct thread_data *, struct io_piece *);
205 extern void prune_io_piece_log(struct thread_data *);
206 extern void write_iolog_close(struct thread_data *);
207 extern int iolog_compress_init(struct thread_data *, struct sk_out *);
208 extern void iolog_compress_exit(struct thread_data *);
209 extern size_t log_chunk_sizes(struct io_log *);
212 extern int iolog_file_inflate(const char *);
219 struct thread_data *td;
220 unsigned long avg_msec;
228 static inline bool per_unit_log(struct io_log *log)
230 return log && !log->avg_msec;
233 extern void finalize_logs(struct thread_data *td, bool);
234 extern void setup_log(struct io_log **, struct log_params *, const char *);
235 extern void flush_log(struct io_log *, int);
236 extern void flush_samples(FILE *, void *, uint64_t);
237 extern void free_log(struct io_log *);
238 extern void fio_writeout_logs(bool);
239 extern void td_writeout_logs(struct thread_data *, bool);
240 extern int iolog_cur_flush(struct io_log *, struct io_logs *);
242 static inline void init_ipo(struct io_piece *ipo)
244 memset(ipo, 0, sizeof(*ipo));
245 INIT_FLIST_HEAD(&ipo->trim_list);
248 struct iolog_compress {
249 struct flist_head list;