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)
47 #define LOG_QUIESCE_SZ (64 * 1024 * 1024)
50 struct flist_head list;
57 * Dynamically growing data sample log
61 * Entries already logged
63 struct flist_head io_logs;
66 unsigned int log_ddir_mask;
70 struct thread_data *td;
72 unsigned int log_type;
75 * If we fail extending the log, stop collecting more entries.
82 unsigned int log_offset;
85 * Max size of log entries before a chunk is compressed
90 * Don't deflate for storing, just store the compressed bits
92 unsigned int log_gz_store;
95 * Windowed average, for logging single entries average over some
98 struct io_stat avg_window[DDIR_RWDIR_CNT];
99 unsigned long avg_msec;
100 unsigned long avg_last;
102 pthread_mutex_t chunk_lock;
103 unsigned int chunk_seq;
104 struct flist_head chunk_list;
108 * If the upper bit is set, then we have the offset as well
110 #define LOG_OFFSET_SAMPLE_BIT 0x80000000U
111 #define io_sample_ddir(io) ((io)->__ddir & ~LOG_OFFSET_SAMPLE_BIT)
113 static inline void io_sample_set_ddir(struct io_log *log,
114 struct io_sample *io,
117 io->__ddir = ddir | log->log_ddir_mask;
120 static inline size_t __log_entry_sz(int log_offset)
123 return sizeof(struct io_sample_offset);
125 return sizeof(struct io_sample);
128 static inline size_t log_entry_sz(struct io_log *log)
130 return __log_entry_sz(log->log_offset);
133 static inline struct io_sample *__get_sample(void *samples, int log_offset,
136 uint64_t sample_offset = sample * __log_entry_sz(log_offset);
137 return (struct io_sample *) ((char *) samples + sample_offset);
140 struct io_logs *iolog_cur_log(struct io_log *);
141 uint64_t iolog_nr_samples(struct io_log *);
143 static inline struct io_sample *get_sample(struct io_log *iolog,
144 struct io_logs *cur_log,
147 return __get_sample(cur_log->log, iolog->log_offset, sample);
158 * When logging io actions, this matches a single sent io_u
162 struct rb_node rb_node;
163 struct flist_head list;
165 struct flist_head trim_list;
168 struct fio_file *file;
170 unsigned long long offset;
171 unsigned short numberio;
177 unsigned int file_action;
192 extern int __must_check read_iolog_get(struct thread_data *, struct io_u *);
193 extern void log_io_u(const struct thread_data *, const struct io_u *);
194 extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act);
195 extern int __must_check init_iolog(struct thread_data *td);
196 extern void log_io_piece(struct thread_data *, struct io_u *);
197 extern void unlog_io_piece(struct thread_data *, struct io_u *);
198 extern void trim_io_piece(struct thread_data *, const struct io_u *);
199 extern void queue_io_piece(struct thread_data *, struct io_piece *);
200 extern void prune_io_piece_log(struct thread_data *);
201 extern void write_iolog_close(struct thread_data *);
202 extern int iolog_compress_init(struct thread_data *, struct sk_out *);
203 extern void iolog_compress_exit(struct thread_data *);
204 extern size_t log_chunk_sizes(struct io_log *);
207 extern int iolog_file_inflate(const char *);
214 struct thread_data *td;
215 unsigned long avg_msec;
223 static inline bool per_unit_log(struct io_log *log)
225 return log && !log->avg_msec;
228 extern void finalize_logs(struct thread_data *td, bool);
229 extern void setup_log(struct io_log **, struct log_params *, const char *);
230 extern void flush_log(struct io_log *, int);
231 extern void flush_samples(FILE *, void *, uint64_t);
232 extern void free_log(struct io_log *);
233 extern void fio_writeout_logs(bool);
234 extern void td_writeout_logs(struct thread_data *, bool);
235 extern int iolog_cur_flush(struct io_log *, struct io_logs *);
237 static inline void init_ipo(struct io_piece *ipo)
239 memset(ipo, 0, sizeof(*ipo));
240 INIT_FLIST_HEAD(&ipo->trim_list);
243 struct iolog_compress {
244 struct flist_head list;