shhuiw's Technotes

[转载] Debugging disk issues with blktrace, blkparse, btrace and btt in Linux environment

blktrace is a block layer IO tracing mechanism which provides detailed information about request queue operations up to user space. There are three major components: a kernel component, a utility to record the i/o trace information …

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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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