Re: [cfq] sched_idle process stalled for 1 minute; strange ioprio too

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> Are you sure no other disk activity was going on at that time? Just
> a single writeout or read from the disk will stall your idle prio
> task. If you expect things to finish within a bounded time, then you
> should not use idle :-)

I'm not 100% sure.  The disk light never flashed.  And if any write or
read happened it would have been for just a moment, whereas the
apt-get stalled for about one minute.  I'll experiment again at the
next big 'apt-get upgrade' and report any long stalls.
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