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 {
45 * Dynamically growing data sample log
49 * Entries already logged
51 unsigned long nr_samples;
52 unsigned long max_samples;
55 unsigned int log_type;
58 * If we fail extending the log, stop collecting more entries.
60 unsigned int disabled;
65 unsigned int log_offset;
68 * Windowed average, for logging single entries average over some
71 struct io_stat avg_window[DDIR_RWDIR_CNT];
72 unsigned long avg_msec;
73 unsigned long avg_last;
76 static inline size_t __log_entry_sz(int log_offset)
79 return sizeof(struct io_sample_offset);
81 return sizeof(struct io_sample);
84 static inline size_t log_entry_sz(struct io_log *log)
86 return __log_entry_sz(log->log_offset);
89 static inline struct io_sample *__get_sample(void *samples, int log_offset,
92 return samples + sample * __log_entry_sz(log_offset);
95 static inline struct io_sample *get_sample(struct io_log *iolog,
98 return __get_sample(iolog->log, iolog->log_offset, sample);
109 * When logging io actions, this matches a single sent io_u
113 struct rb_node rb_node;
114 struct flist_head list;
116 struct flist_head trim_list;
119 struct fio_file *file;
121 unsigned long long offset;
122 unsigned short numberio;
128 unsigned int file_action;
143 extern int __must_check read_iolog_get(struct thread_data *, struct io_u *);
144 extern void log_io_u(struct thread_data *, struct io_u *);
145 extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act);
146 extern int __must_check init_iolog(struct thread_data *td);
147 extern void log_io_piece(struct thread_data *, struct io_u *);
148 extern void unlog_io_piece(struct thread_data *, struct io_u *);
149 extern void trim_io_piece(struct thread_data *, struct io_u *);
150 extern void queue_io_piece(struct thread_data *, struct io_piece *);
151 extern void prune_io_piece_log(struct thread_data *);
152 extern void write_iolog_close(struct thread_data *);
157 extern void finalize_logs(struct thread_data *td);
158 extern void add_lat_sample(struct thread_data *, enum fio_ddir, unsigned long,
159 unsigned int, uint64_t);
160 extern void add_clat_sample(struct thread_data *, enum fio_ddir, unsigned long,
161 unsigned int, uint64_t);
162 extern void add_slat_sample(struct thread_data *, enum fio_ddir, unsigned long,
163 unsigned int, uint64_t);
164 extern void add_bw_sample(struct thread_data *, enum fio_ddir, unsigned int,
166 extern void add_iops_sample(struct thread_data *, enum fio_ddir, unsigned int,
168 extern void init_disk_util(struct thread_data *);
169 extern void update_rusage_stat(struct thread_data *);
170 extern void setup_log(struct io_log **, unsigned long, int, int);
171 extern void __finish_log(struct io_log *, const char *);
172 extern struct io_log *agg_io_log[DDIR_RWDIR_CNT];
173 extern int write_bw_log;
174 extern void add_agg_sample(unsigned long, enum fio_ddir, unsigned int);
175 extern void fio_writeout_logs(struct thread_data *);
177 static inline void init_ipo(struct io_piece *ipo)
179 memset(ipo, 0, sizeof(*ipo));
180 INIT_FLIST_HEAD(&ipo->trim_list);