#ifndef FIO_IOLOG_H
#define FIO_IOLOG_H
+#include <stdio.h>
+
#include "lib/rbtree.h"
#include "lib/ieee754.h"
#include "flist.h"
-#include "ioengine.h"
+#include "ioengines.h"
/*
* Use for maintaining statistics
fio_fp64_t S;
};
+struct io_hist {
+ uint64_t samples;
+ unsigned long hist_last;
+ struct flist_head list;
+};
+
+
+union io_sample_data {
+ uint64_t val;
+ struct io_u_plat_entry *plat_entry;
+};
+
+#define sample_val(value) ((union io_sample_data) { .val = value })
+#define sample_plat(plat) ((union io_sample_data) { .plat_entry = plat })
+
/*
* A single data sample
*/
struct io_sample {
uint64_t time;
- uint64_t val;
- uint32_t ddir;
- uint32_t bs;
+ union io_sample_data data;
+ uint32_t __ddir;
+ uint64_t bs;
+};
+
+struct io_sample_offset {
+ struct io_sample s;
+ uint64_t offset;
};
enum {
IO_LOG_TYPE_SLAT,
IO_LOG_TYPE_BW,
IO_LOG_TYPE_IOPS,
+ IO_LOG_TYPE_HIST,
+};
+
+#define DEF_LOG_ENTRIES 1024
+#define MAX_LOG_ENTRIES (1024 * DEF_LOG_ENTRIES)
+
+struct io_logs {
+ struct flist_head list;
+ uint64_t nr_samples;
+ uint64_t max_samples;
+ void *log;
};
/*
/*
* Entries already logged
*/
- unsigned long nr_samples;
- unsigned long max_samples;
- struct io_sample *log;
+ struct flist_head io_logs;
+ uint32_t cur_log_max;
+
+ /*
+ * When the current log runs out of space, store events here until
+ * we have a chance to regrow
+ */
+ struct io_logs *pending;
+
+ unsigned int log_ddir_mask;
+
+ char *filename;
+
+ struct thread_data *td;
unsigned int log_type;
+ /*
+ * If we fail extending the log, stop collecting more entries.
+ */
+ bool disabled;
+
+ /*
+ * Log offsets
+ */
+ unsigned int log_offset;
+
+ /*
+ * Max size of log entries before a chunk is compressed
+ */
+ unsigned int log_gz;
+
+ /*
+ * Don't deflate for storing, just store the compressed bits
+ */
+ unsigned int log_gz_store;
+
/*
* Windowed average, for logging single entries average over some
* period of time.
*/
struct io_stat avg_window[DDIR_RWDIR_CNT];
unsigned long avg_msec;
- unsigned long avg_last;
+ unsigned long avg_last[DDIR_RWDIR_CNT];
+
+ /*
+ * Windowed latency histograms, for keeping track of when we need to
+ * save a copy of the histogram every approximately hist_msec
+ * milliseconds.
+ */
+ struct io_hist hist_window[DDIR_RWDIR_CNT];
+ unsigned long hist_msec;
+ unsigned int hist_coarseness;
+
+ pthread_mutex_t chunk_lock;
+ unsigned int chunk_seq;
+ struct flist_head chunk_list;
+
+ pthread_mutex_t deferred_free_lock;
+#define IOLOG_MAX_DEFER 8
+ void *deferred_items[IOLOG_MAX_DEFER];
+ unsigned int deferred;
};
+/*
+ * If the upper bit is set, then we have the offset as well
+ */
+#define LOG_OFFSET_SAMPLE_BIT 0x80000000U
+#define io_sample_ddir(io) ((io)->__ddir & ~LOG_OFFSET_SAMPLE_BIT)
+
+static inline void io_sample_set_ddir(struct io_log *log,
+ struct io_sample *io,
+ enum fio_ddir ddir)
+{
+ io->__ddir = ddir | log->log_ddir_mask;
+}
+
+static inline size_t __log_entry_sz(int log_offset)
+{
+ if (log_offset)
+ return sizeof(struct io_sample_offset);
+ else
+ return sizeof(struct io_sample);
+}
+
+static inline size_t log_entry_sz(struct io_log *log)
+{
+ return __log_entry_sz(log->log_offset);
+}
+
+static inline size_t log_sample_sz(struct io_log *log, struct io_logs *cur_log)
+{
+ return cur_log->nr_samples * log_entry_sz(log);
+}
+
+static inline struct io_sample *__get_sample(void *samples, int log_offset,
+ uint64_t sample)
+{
+ uint64_t sample_offset = sample * __log_entry_sz(log_offset);
+ return (struct io_sample *) ((char *) samples + sample_offset);
+}
+
+struct io_logs *iolog_cur_log(struct io_log *);
+uint64_t iolog_nr_samples(struct io_log *);
+void regrow_logs(struct thread_data *);
+
+static inline struct io_sample *get_sample(struct io_log *iolog,
+ struct io_logs *cur_log,
+ uint64_t sample)
+{
+ return __get_sample(cur_log->log, iolog->log_offset, sample);
+}
+
enum {
IP_F_ONRB = 1,
IP_F_ONLIST = 2,
IP_F_TRIMMED = 4,
+ IP_F_IN_FLIGHT = 8,
};
/*
*/
struct io_piece {
union {
- struct rb_node rb_node;
+ struct fio_rb_node rb_node;
struct flist_head list;
};
struct flist_head trim_list;
struct fio_file *file;
};
unsigned long long offset;
+ unsigned short numberio;
unsigned long len;
unsigned int flags;
enum fio_ddir ddir;
FIO_LOG_UNLINK_FILE,
};
+struct io_u;
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_io_u(const struct thread_data *, const 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 bool __must_check init_iolog(struct thread_data *td);
extern void log_io_piece(struct thread_data *, struct io_u *);
+extern void unlog_io_piece(struct thread_data *, struct io_u *);
+extern void trim_io_piece(const 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 *);
+extern int iolog_compress_init(struct thread_data *, struct sk_out *);
+extern void iolog_compress_exit(struct thread_data *);
+extern size_t log_chunk_sizes(struct io_log *);
+extern int init_io_u_buffers(struct thread_data *);
+
+#ifdef CONFIG_ZLIB
+extern int iolog_file_inflate(const char *);
+#endif
/*
* 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 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[DDIR_RWDIR_CNT];
-extern int write_bw_log;
-extern void add_agg_sample(unsigned long, enum fio_ddir, unsigned int);
+struct log_params {
+ struct thread_data *td;
+ unsigned long avg_msec;
+ unsigned long hist_msec;
+ int hist_coarseness;
+ int log_type;
+ int log_offset;
+ int log_gz;
+ int log_gz_store;
+ int log_compress;
+};
+
+static inline bool per_unit_log(struct io_log *log)
+{
+ return log && (!log->avg_msec || log->log_gz || log->log_gz_store);
+}
+
+static inline bool inline_log(struct io_log *log)
+{
+ return log->log_type == IO_LOG_TYPE_LAT ||
+ log->log_type == IO_LOG_TYPE_CLAT ||
+ log->log_type == IO_LOG_TYPE_SLAT;
+}
+
+static inline void ipo_bytes_align(unsigned int replay_align, struct io_piece *ipo)
+{
+ if (!replay_align)
+ return;
+
+ ipo->offset &= ~(replay_align - (uint64_t)1);
+}
+
+extern void finalize_logs(struct thread_data *td, bool);
+extern void setup_log(struct io_log **, struct log_params *, const char *);
+extern void flush_log(struct io_log *, bool);
+extern void flush_samples(FILE *, void *, uint64_t);
+extern uint64_t hist_sum(int, int, uint64_t *, uint64_t *);
+extern void free_log(struct io_log *);
+extern void fio_writeout_logs(bool);
+extern void td_writeout_logs(struct thread_data *, bool);
+extern int iolog_cur_flush(struct io_log *, struct io_logs *);
static inline void init_ipo(struct io_piece *ipo)
{
- memset(ipo, 0, sizeof(*ipo));
+ INIT_FLIST_HEAD(&ipo->list);
INIT_FLIST_HEAD(&ipo->trim_list);
}
+struct iolog_compress {
+ struct flist_head list;
+ void *buf;
+ size_t len;
+ unsigned int seq;
+};
+
#endif
projects / fio.git / blobdiff