dm-io

dm-io provides synchronous and asynchronous I/O services. There are 4 types of I/O services available, and each type has a sync and an async version.

The user must set up an dm_io_region structure to describe the desired location …

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iostat - Device Utilization Report

https://linux.die.net/man/1/iostat

IO statistics
        /proc/diskstats
        /sys/block/<disk>/stat
        /sys/block/<disk>/<partiton>/stat

    -t      Print the time for each report displayed. The timestamp format may
            depend on the value of the S_TIME_FORMAT environment variable 

    -x      Display extended statistics.

The interval parameter '-d' specifies …

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