Poor Disk Performance
Brendan Gregg
MAY 8, 2021
An average of 434 ms is awful, and a small queue size (aqu-sz) indicates it's a problem with the disk and not the workload applied. Update: Some modern drives after 2015 are sealed with [helium].) Rotational disks have extra latency from head seeks for random I/O, and spin ups from the idle state. Hit Ctrl-C to end.
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