6 #include "lib/rbtree.h"
7 #include "lib/ieee754.h"
12 * Use for maintaining statistics
25 unsigned long hist_last;
26 struct flist_head list;
30 union io_sample_data {
32 struct io_u_plat_entry *plat_entry;
35 #define sample_val(value) ((union io_sample_data) { .val = value })
36 #define sample_plat(plat) ((union io_sample_data) { .plat_entry = plat })
39 * A single data sample
43 union io_sample_data data;
49 struct io_sample_offset {
63 #define DEF_LOG_ENTRIES 1024
64 #define MAX_LOG_ENTRIES (1024 * DEF_LOG_ENTRIES)
67 struct flist_head list;
74 * Dynamically growing data sample log
78 * Entries already logged
80 struct flist_head io_logs;
84 * When the current log runs out of space, store events here until
85 * we have a chance to regrow
87 struct io_logs *pending;
89 unsigned int log_ddir_mask;
93 struct thread_data *td;
95 unsigned int log_type;
98 * If we fail extending the log, stop collecting more entries.
105 unsigned int log_offset;
108 * Max size of log entries before a chunk is compressed
113 * Don't deflate for storing, just store the compressed bits
115 unsigned int log_gz_store;
118 * Windowed average, for logging single entries average over some
121 struct io_stat avg_window[DDIR_RWDIR_CNT];
122 unsigned long avg_msec;
123 unsigned long avg_last[DDIR_RWDIR_CNT];
126 * Windowed latency histograms, for keeping track of when we need to
127 * save a copy of the histogram every approximately hist_msec
130 struct io_hist hist_window[DDIR_RWDIR_CNT];
131 unsigned long hist_msec;
132 unsigned int hist_coarseness;
134 pthread_mutex_t chunk_lock;
135 unsigned int chunk_seq;
136 struct flist_head chunk_list;
138 pthread_mutex_t deferred_free_lock;
139 #define IOLOG_MAX_DEFER 8
140 void *deferred_items[IOLOG_MAX_DEFER];
141 unsigned int deferred;
145 * If the upper bit is set, then we have the offset as well
147 #define LOG_OFFSET_SAMPLE_BIT 0x80000000U
148 #define io_sample_ddir(io) ((io)->__ddir & ~LOG_OFFSET_SAMPLE_BIT)
150 static inline void io_sample_set_ddir(struct io_log *log,
151 struct io_sample *io,
154 io->__ddir = ddir | log->log_ddir_mask;
157 static inline size_t __log_entry_sz(int log_offset)
160 return sizeof(struct io_sample_offset);
162 return sizeof(struct io_sample);
165 static inline size_t log_entry_sz(struct io_log *log)
167 return __log_entry_sz(log->log_offset);
170 static inline size_t log_sample_sz(struct io_log *log, struct io_logs *cur_log)
172 return cur_log->nr_samples * log_entry_sz(log);
175 static inline struct io_sample *__get_sample(void *samples, int log_offset,
178 uint64_t sample_offset = sample * __log_entry_sz(log_offset);
179 return (struct io_sample *) ((char *) samples + sample_offset);
182 struct io_logs *iolog_cur_log(struct io_log *);
183 uint64_t iolog_nr_samples(struct io_log *);
184 void regrow_logs(struct thread_data *);
186 static inline struct io_sample *get_sample(struct io_log *iolog,
187 struct io_logs *cur_log,
190 return __get_sample(cur_log->log, iolog->log_offset, sample);
201 * When logging io actions, this matches a single sent io_u
205 struct fio_rb_node rb_node;
206 struct flist_head list;
208 struct flist_head trim_list;
211 struct fio_file *file;
213 unsigned long long offset;
214 unsigned short numberio;
220 unsigned int file_action;
235 extern int __must_check read_iolog_get(struct thread_data *, struct io_u *);
236 extern void log_io_u(const struct thread_data *, const struct io_u *);
237 extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act);
238 extern bool __must_check init_iolog(struct thread_data *td);
239 extern void log_io_piece(struct thread_data *, struct io_u *);
240 extern void unlog_io_piece(struct thread_data *, struct io_u *);
241 extern void trim_io_piece(const struct io_u *);
242 extern void queue_io_piece(struct thread_data *, struct io_piece *);
243 extern void prune_io_piece_log(struct thread_data *);
244 extern void write_iolog_close(struct thread_data *);
245 extern int iolog_compress_init(struct thread_data *, struct sk_out *);
246 extern void iolog_compress_exit(struct thread_data *);
247 extern size_t log_chunk_sizes(struct io_log *);
248 extern int init_io_u_buffers(struct thread_data *);
251 extern int iolog_file_inflate(const char *);
258 struct thread_data *td;
259 unsigned long avg_msec;
260 unsigned long hist_msec;
269 static inline bool per_unit_log(struct io_log *log)
271 return log && (!log->avg_msec || log->log_gz || log->log_gz_store);
274 static inline bool inline_log(struct io_log *log)
276 return log->log_type == IO_LOG_TYPE_LAT ||
277 log->log_type == IO_LOG_TYPE_CLAT ||
278 log->log_type == IO_LOG_TYPE_SLAT;
281 static inline void ipo_bytes_align(unsigned int replay_align, struct io_piece *ipo)
286 ipo->offset &= ~(replay_align - (uint64_t)1);
289 extern void finalize_logs(struct thread_data *td, bool);
290 extern void setup_log(struct io_log **, struct log_params *, const char *);
291 extern void flush_log(struct io_log *, bool);
292 extern void flush_samples(FILE *, void *, uint64_t);
293 extern uint64_t hist_sum(int, int, uint64_t *, uint64_t *);
294 extern void free_log(struct io_log *);
295 extern void fio_writeout_logs(bool);
296 extern void td_writeout_logs(struct thread_data *, bool);
297 extern int iolog_cur_flush(struct io_log *, struct io_logs *);
299 static inline void init_ipo(struct io_piece *ipo)
301 INIT_FLIST_HEAD(&ipo->list);
302 INIT_FLIST_HEAD(&ipo->trim_list);
305 struct iolog_compress {
306 struct flist_head list;