bltrace btt blkparse

io 分析工具。外加iotop,atop

 blktrace  /dev/mapper/VGSYS-lv_lab  -a issue -a complete -w 120 -o -|blkiomon -I 10 -h -


-d              | --dev=
[ -r   | --relay= ]
[ -o           | --output=]
[ -D            | --output-dir=
[ -w           | --stopwatch=]
[ -a   | --act-mask=]
[ -A    | --set-mask=]
[ -b           | --buffer-size]
[ -n         | --num-sub-buffers=]
[ -l                 | --listen]
[ -h       | --host=]
[ -p    | --port=]
[ -s                 | --no-sendfile]
[ -I      | --input-devs=]
[ -v        | --version]
[ -V        | --version]
        -d Use specified device. May also be given last after options
        -r Path to mounted debugfs, defaults to /sys/kernel/debug
        -o File(s) to send output to
        -D Directory to prepend to output file names
        -w Stop after defined time, in seconds
        -a Only trace specified actions. See documentation
        -A Give trace mask as a single value. See documentation
        -b Sub buffer size in KiB
        -n Number of sub buffers
        -l Run in network listen mode (blktrace server)
        -h Run in network client mode, connecting to the given host
        -p Network port to use (default 8462)
        -s Make the network client NOT use sendfile() to transfer data
        -I Add devices found in
        -v Print program version info
        -V Print program version info