[Beowulf] Large Dell, odd IO delays

Christopher Samuel chris at csamuel.org
Wed Feb 14 15:00:28 PST 2018

On 15/02/18 09:26, David Mathog wrote:

> Sometimes for no reason that I can discern an IO operation on this 
> machine will stall.  Things that should take seconds will run for 
> minutes, or at least until I get tired of waiting and kill them.
> Here is today's example:
> gunzip -c largeFile.gz > largeFile

Does "perf top -p ${PID}" show anything useful about where the
processes is spending its time?

Good luck!

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