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Monitor I/O latency in real time. More information:

  • Show disk I/O latency using the default values and the current directory:

ioping .

  • Measure latency on /tmp using 10 requests of 1 megabyte each:

ioping -c 10 -s 1M /tmp

  • Measure disk seek rate on /dev/sdX:

ioping -R {{/dev/sdX}}

  • Measure disk sequential speed on /dev/sdX:

ioping -RL {{/dev/sdX}}