blob: 18d3c6c532fe9b1295c1e8ef33899e603f8f7b31 [file] [log] [blame]
#ifndef FIO_IOLOG_H
#define FIO_IOLOG_H
#include "rbtree.h"
#include "lib/ieee754.h"
#include "ioengine.h"
/*
* Use for maintaining statistics
*/
struct io_stat {
uint64_t max_val;
uint64_t min_val;
uint64_t samples;
fio_fp64_t mean;
fio_fp64_t S;
};
/*
* A single data sample
*/
struct io_sample {
uint64_t time;
uint64_t val;
uint32_t ddir;
uint32_t bs;
};
enum {
IO_LOG_TYPE_LAT = 1,
IO_LOG_TYPE_CLAT,
IO_LOG_TYPE_SLAT,
IO_LOG_TYPE_BW,
IO_LOG_TYPE_IOPS,
};
/*
* Dynamically growing data sample log
*/
struct io_log {
/*
* Entries already logged
*/
unsigned long nr_samples;
unsigned long max_samples;
struct io_sample *log;
unsigned int log_type;
/*
* Windowed average, for logging single entries average over some
* period of time.
*/
struct io_stat avg_window[2];
unsigned long avg_msec;
unsigned long avg_last;
};
enum {
IP_F_ONRB = 1,
IP_F_ONLIST = 2,
IP_F_TRIMMED = 4,
};
/*
* When logging io actions, this matches a single sent io_u
*/
struct io_piece {
union {
struct rb_node rb_node;
struct flist_head list;
};
struct flist_head trim_list;
union {
int fileno;
struct fio_file *file;
};
unsigned long long offset;
unsigned long len;
unsigned int flags;
enum fio_ddir ddir;
union {
unsigned long delay;
unsigned int file_action;
};
};
/*
* Log exports
*/
enum file_log_act {
FIO_LOG_ADD_FILE,
FIO_LOG_OPEN_FILE,
FIO_LOG_CLOSE_FILE,
FIO_LOG_UNLINK_FILE,
};
extern int __must_check read_iolog_get(struct thread_data *, struct io_u *);
extern void log_io_u(struct thread_data *, struct io_u *);
extern void log_file(struct thread_data *, struct fio_file *, enum file_log_act);
extern int __must_check init_iolog(struct thread_data *td);
extern void log_io_piece(struct thread_data *, struct io_u *);
extern void queue_io_piece(struct thread_data *, struct io_piece *);
extern void prune_io_piece_log(struct thread_data *);
extern void write_iolog_close(struct thread_data *);
/*
* Logging
*/
extern void add_lat_sample(struct thread_data *, enum fio_ddir, unsigned long,
unsigned int);
extern void add_clat_sample(struct thread_data *, enum fio_ddir, unsigned long,
unsigned int);
extern void add_slat_sample(struct thread_data *, enum fio_ddir, unsigned long,
unsigned int);
extern void add_bw_sample(struct thread_data *, enum fio_ddir, unsigned int,
struct timeval *);
extern void add_iops_sample(struct thread_data *, enum fio_ddir, struct timeval *);
extern void init_disk_util(struct thread_data *);
extern void update_rusage_stat(struct thread_data *);
extern void update_io_ticks(void);
extern void setup_log(struct io_log **, unsigned long, int);
extern void finish_log(struct thread_data *, struct io_log *, const char *);
extern void finish_log_named(struct thread_data *, struct io_log *, const char *, const char *);
extern void __finish_log(struct io_log *, const char *);
extern struct io_log *agg_io_log[2];
extern int write_bw_log;
extern void add_agg_sample(unsigned long, enum fio_ddir, unsigned int);
static inline void init_ipo(struct io_piece *ipo)
{
memset(ipo, 0, sizeof(*ipo));
INIT_FLIST_HEAD(&ipo->trim_list);
}
#endif