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
47 * Dynamically growing data sample log
51 * Entries already logged
57 unsigned int log_ddir_mask;
61 struct thread_data *td;
63 unsigned int log_type;
66 * If we fail extending the log, stop collecting more entries.
68 unsigned int disabled;
73 unsigned int log_offset;
76 * Max size of log entries before a chunk is compressed
81 * Don't deflate for storing, just store the compressed bits
83 unsigned int log_gz_store;
86 * Windowed average, for logging single entries average over some
89 struct io_stat avg_window[DDIR_RWDIR_CNT];
90 unsigned long avg_msec;
91 unsigned long avg_last;
93 pthread_mutex_t chunk_lock;
94 unsigned int chunk_seq;
95 struct flist_head chunk_list;
99 * If the upper bit is set, then we have the offset as well
101 #define LOG_OFFSET_SAMPLE_BIT 0x80000000U
102 #define io_sample_ddir(io) ((io)->__ddir & ~LOG_OFFSET_SAMPLE_BIT)
104 static inline void io_sample_set_ddir(struct io_log *log,
105 struct io_sample *io,
108 io->__ddir = ddir | log->log_ddir_mask;
111 static inline size_t __log_entry_sz(int log_offset)
114 return sizeof(struct io_sample_offset);
116 return sizeof(struct io_sample);
119 static inline size_t log_entry_sz(struct io_log *log)
121 return __log_entry_sz(log->log_offset);
124 static inline struct io_sample *__get_sample(void *samples, int log_offset,
127 uint64_t sample_offset = sample * __log_entry_sz(log_offset);
128 return (struct io_sample *) ((char *) samples + sample_offset);
131 static inline struct io_sample *get_sample(struct io_log *iolog,
134 return __get_sample(iolog->log, iolog->log_offset, sample);
145 * When logging io actions, this matches a single sent io_u
149 struct rb_node rb_node;
150 struct flist_head list;
152 struct flist_head trim_list;
155 struct fio_file *file;
157 unsigned long long offset;
158 unsigned short numberio;
164 unsigned int file_action;
179 extern int __must_check read_iolog_get(struct thread_data *, struct io_u *);
180 extern void log_io_u(const struct thread_data *, const struct io_u *);
181 extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act);
182 extern int __must_check init_iolog(struct thread_data *td);
183 extern void log_io_piece(struct thread_data *, struct io_u *);
184 extern void unlog_io_piece(struct thread_data *, struct io_u *);
185 extern void trim_io_piece(struct thread_data *, const struct io_u *);
186 extern void queue_io_piece(struct thread_data *, struct io_piece *);
187 extern void prune_io_piece_log(struct thread_data *);
188 extern void write_iolog_close(struct thread_data *);
189 extern int iolog_compress_init(struct thread_data *, struct sk_out *);
190 extern void iolog_compress_exit(struct thread_data *);
191 extern size_t log_chunk_sizes(struct io_log *);
194 extern int iolog_file_inflate(const char *);
201 struct thread_data *td;
202 unsigned long avg_msec;
210 static inline bool per_unit_log(struct io_log *log)
212 return log && !log->avg_msec;
215 extern void finalize_logs(struct thread_data *td, bool);
216 extern void setup_log(struct io_log **, struct log_params *, const char *);
217 extern void flush_log(struct io_log *, int);
218 extern void flush_samples(FILE *, void *, uint64_t);
219 extern void free_log(struct io_log *);
220 extern void fio_writeout_logs(bool);
221 extern void td_writeout_logs(struct thread_data *, bool);
222 extern int iolog_flush(struct io_log *, int);
224 static inline void init_ipo(struct io_piece *ipo)
226 memset(ipo, 0, sizeof(*ipo));
227 INIT_FLIST_HEAD(&ipo->trim_list);
230 struct iolog_compress {
231 struct flist_head list;