4 #include "lib/rbtree.h"
5 #include "lib/ieee754.h"
10 * Use for maintaining statistics
21 struct io_u_plat_list {
22 struct flist_head list;
27 unsigned long hist_last;
28 struct io_u_plat_list list;
32 * A single data sample
41 struct io_sample_offset {
55 #define DEF_LOG_ENTRIES 1024
56 #define MAX_LOG_ENTRIES (1024 * DEF_LOG_ENTRIES)
59 struct flist_head list;
66 * Dynamically growing data sample log
70 * Entries already logged
72 struct flist_head io_logs;
76 * When the current log runs out of space, store events here until
77 * we have a chance to regrow
79 struct io_logs *pending;
81 unsigned int log_ddir_mask;
85 struct thread_data *td;
87 unsigned int log_type;
90 * If we fail extending the log, stop collecting more entries.
97 unsigned int log_offset;
100 * Max size of log entries before a chunk is compressed
105 * Don't deflate for storing, just store the compressed bits
107 unsigned int log_gz_store;
110 * Windowed average, for logging single entries average over some
113 struct io_stat avg_window[DDIR_RWDIR_CNT];
114 unsigned long avg_msec;
115 unsigned long avg_last;
118 * Windowed latency histograms, for keeping track of when we need to
119 * save a copy of the histogram every approximately hist_msec
122 struct io_hist hist_window[DDIR_RWDIR_CNT];
123 unsigned long hist_msec;
126 pthread_mutex_t chunk_lock;
127 unsigned int chunk_seq;
128 struct flist_head chunk_list;
132 * If the upper bit is set, then we have the offset as well
134 #define LOG_OFFSET_SAMPLE_BIT 0x80000000U
135 #define io_sample_ddir(io) ((io)->__ddir & ~LOG_OFFSET_SAMPLE_BIT)
137 static inline void io_sample_set_ddir(struct io_log *log,
138 struct io_sample *io,
141 io->__ddir = ddir | log->log_ddir_mask;
144 static inline size_t __log_entry_sz(int log_offset)
147 return sizeof(struct io_sample_offset);
149 return sizeof(struct io_sample);
152 static inline size_t log_entry_sz(struct io_log *log)
154 return __log_entry_sz(log->log_offset);
157 static inline struct io_sample *__get_sample(void *samples, int log_offset,
160 uint64_t sample_offset = sample * __log_entry_sz(log_offset);
161 return (struct io_sample *) ((char *) samples + sample_offset);
164 struct io_logs *iolog_cur_log(struct io_log *);
165 uint64_t iolog_nr_samples(struct io_log *);
166 void regrow_logs(struct thread_data *);
168 static inline struct io_sample *get_sample(struct io_log *iolog,
169 struct io_logs *cur_log,
172 return __get_sample(cur_log->log, iolog->log_offset, sample);
183 * When logging io actions, this matches a single sent io_u
187 struct rb_node rb_node;
188 struct flist_head list;
190 struct flist_head trim_list;
193 struct fio_file *file;
195 unsigned long long offset;
196 unsigned short numberio;
202 unsigned int file_action;
217 extern int __must_check read_iolog_get(struct thread_data *, struct io_u *);
218 extern void log_io_u(const struct thread_data *, const struct io_u *);
219 extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act);
220 extern int __must_check init_iolog(struct thread_data *td);
221 extern void log_io_piece(struct thread_data *, struct io_u *);
222 extern void unlog_io_piece(struct thread_data *, struct io_u *);
223 extern void trim_io_piece(struct thread_data *, const struct io_u *);
224 extern void queue_io_piece(struct thread_data *, struct io_piece *);
225 extern void prune_io_piece_log(struct thread_data *);
226 extern void write_iolog_close(struct thread_data *);
227 extern int iolog_compress_init(struct thread_data *, struct sk_out *);
228 extern void iolog_compress_exit(struct thread_data *);
229 extern size_t log_chunk_sizes(struct io_log *);
232 extern int iolog_file_inflate(const char *);
239 struct thread_data *td;
240 unsigned long avg_msec;
241 unsigned long hist_msec;
250 static inline bool per_unit_log(struct io_log *log)
252 return log && !log->avg_msec;
255 static inline bool inline_log(struct io_log *log)
257 return log->log_type == IO_LOG_TYPE_LAT ||
258 log->log_type == IO_LOG_TYPE_CLAT ||
259 log->log_type == IO_LOG_TYPE_SLAT;
262 extern void finalize_logs(struct thread_data *td, bool);
263 extern void setup_log(struct io_log **, struct log_params *, const char *);
264 extern void flush_log(struct io_log *, bool);
265 extern void flush_samples(FILE *, void *, uint64_t);
266 extern void free_log(struct io_log *);
267 extern void fio_writeout_logs(bool);
268 extern void td_writeout_logs(struct thread_data *, bool);
269 extern int iolog_cur_flush(struct io_log *, struct io_logs *);
271 static inline void init_ipo(struct io_piece *ipo)
273 memset(ipo, 0, sizeof(*ipo));
274 INIT_FLIST_HEAD(&ipo->trim_list);
277 struct iolog_compress {
278 struct flist_head list;