#include "arch.h"
#include "os.h"
+#ifdef FIO_HAVE_SYSLET
+#include "syslet.h"
+#endif
+
enum fio_ddir {
DDIR_READ = 0,
DDIR_WRITE,
DDIR_SYNC,
};
+/*
+ * Use for maintaining statistics
+ */
struct io_stat {
- unsigned long val;
- unsigned long val_sq;
unsigned long max_val;
unsigned long min_val;
unsigned long samples;
+
+ double mean;
+ double S;
};
+/*
+ * A single data sample
+ */
struct io_sample {
unsigned long time;
unsigned long val;
enum fio_ddir ddir;
};
+/*
+ * Dynamically growing data sample log
+ */
struct io_log {
unsigned long nr_samples;
unsigned long max_samples;
struct io_sample *log;
};
+/*
+ * When logging io actions, this matches a single sent io_u
+ */
struct io_piece {
struct list_head list;
struct fio_file *file;
unsigned long long offset;
- unsigned int len;
+ unsigned long len;
enum fio_ddir ddir;
};
+#ifdef FIO_HAVE_SYSLET
+struct syslet_req {
+ struct syslet_uatom atom;
+ long ret;
+};
+#endif
+
/*
* The io unit
*/
#endif
#ifdef FIO_HAVE_SGIO
struct sg_io_hdr hdr;
+#endif
+#ifdef FIO_HAVE_SYSLET
+ struct syslet_req req;
#endif
};
struct timeval start_time;
struct timeval issue_time;
+ /*
+ * Allocated/set buffer and length
+ */
void *buf;
- unsigned int buflen;
+ unsigned long buflen;
unsigned long long offset;
+ /*
+ * IO engine state, may be different from above when we get
+ * partial transfers / residual data counts
+ */
+ void *xfer_buf;
+ unsigned long xfer_buflen;
+
unsigned int resid;
unsigned int error;
#define FIO_HDR_MAGIC 0xf00baaef
enum {
- VERIFY_NONE = 0,
- VERIFY_MD5,
- VERIFY_CRC32,
+ VERIFY_NONE = 0, /* no verification */
+ VERIFY_MD5, /* md5 sum data blocks */
+ VERIFY_CRC32, /* crc32 sum data blocks */
};
+/*
+ * A header structure associated with each checksummed data block
+ */
struct verify_header {
unsigned int fio_magic;
unsigned int len;
* The type of object we are working on
*/
enum fio_filetype {
- FIO_TYPE_FILE = 1,
- FIO_TYPE_BD,
- FIO_TYPE_CHAR,
+ FIO_TYPE_FILE = 1, /* plain file */
+ FIO_TYPE_BD, /* block device */
+ FIO_TYPE_CHAR, /* character device */
};
enum fio_ioengine_flags {
- FIO_SYNCIO = 1 << 0,
- FIO_CPUIO = 1 << 1,
- FIO_MMAPIO = 1 << 2,
- FIO_RAWIO = 1 << 3,
+ FIO_SYNCIO = 1 << 0, /* io engine has synchronous ->queue */
+ FIO_CPUIO = 1 << 1, /* cpu burner, doesn't do real io */
+ FIO_MMAPIO = 1 << 2, /* uses memory mapped io */
+ FIO_RAWIO = 1 << 3, /* some sort of direct/raw io */
+ FIO_NETIO = 1 << 4, /* networked io */
+ FIO_NULLIO = 1 << 5, /* no real data transfer (cpu/null) */
};
+/*
+ * Each thread_data structure has a number of files associated with it,
+ * this structure holds state information for a single file.
+ */
struct fio_file {
/*
* A file may not be a file descriptor, let the io engine decide
*/
union {
unsigned long file_data;
- int fd;
+ long fd;
};
char *file_name;
void *mmap;
unsigned long long last_pos;
unsigned long long last_completed_pos;
+ /*
+ * block map for random io
+ */
unsigned long *file_map;
unsigned int num_maps;
+ unsigned int last_free_lookup;
unsigned int unlink;
};
+/*
+ * How many depth levels to log
+ */
+#define FIO_IO_U_MAP_NR 8
+
/*
* This describes a single thread/process executing a fio job.
*/
struct thread_data {
+ char *description;
char *name;
char *directory;
char *filename;
unsigned int hugepage_size;
unsigned int rw_min_bs;
unsigned int thinktime;
+ unsigned int thinktime_blocks;
unsigned int fsync_blocks;
unsigned int start_delay;
unsigned long timeout;
* Current IO depth and list of free and busy io_u's.
*/
unsigned int cur_depth;
+ unsigned int io_u_map[FIO_IO_U_MAP_NR];
+ unsigned long total_io_u;
struct list_head io_u_freelist;
struct list_head io_u_busylist;
return 0;
}
+/*
+ * Disk utils as read in /sys/block/<dev>/stat
+ */
struct disk_util_stat {
unsigned ios[2];
unsigned merges[2];
unsigned time_in_queue;
};
+/*
+ * Per-device disk util management
+ */
struct disk_util {
struct list_head list;
struct timeval time;
};
+/*
+ * Used for passing io_u completion data
+ */
struct io_completion_data {
int nr; /* input */
extern void disk_util_timer_arm(void);
extern void setup_log(struct io_log **);
extern void finish_log(struct thread_data *, struct io_log *, const char *);
+extern void __finish_log(struct io_log *, const char *);
extern int setup_rate(struct thread_data *);
+extern struct io_log *agg_io_log[2];
+extern int write_bw_log;
+extern void add_agg_sample(unsigned long, enum fio_ddir);
/*
* Time functions
#define for_each_file(td, f, i) \
for ((i) = 0, (f) = &(td)->files[0]; (i) < (int) (td)->nr_files; (i)++, (f)++)
+#define fio_assert(td, cond) do { \
+ if (!(cond)) { \
+ int *__foo = NULL; \
+ fprintf(stderr, "file:%s:%d, assert %s failed\n", __FILE__, __LINE__, #cond); \
+ (td)->runstate = TD_EXITED; \
+ (td)->error = EFAULT; \
+ *__foo = 0; \
+ } \
+} while (0)
+
#endif
projects / fio.git / blobdiff