ioping
Monitor I/O latency in real time. tldr-pages
On several platforms
Several platforms
Show disk I/O latency using the default values and the current directory
ioping .IdentifyMeasure latency on /tmp using 10 requests of 1 megabyte each
ioping -count 10 -size 1M /tmpIdentifyMeasure disk seek rate on /dev/sdX
ioping -rapid /dev/sdXIdentifyMeasure disk sequential speed on /dev/sdX
ioping -rapid -linear /dev/sdXIdentify