[TUHS] signals and blocked in I/O

Ralph Corderoy ralph at inputplus.co.uk
Sat Dec 2 09:03:02 AEST 2017

Hi Larry,

> > So OOM code kills a (random) process in hopes of freeing up some
> > pages but if this process is stuck in diskIO, nothing can be freed
> > and everything grinds to a halt.
> Yep, exactly.

Is that because the pages have been dirty for so long they've reached
the VM-writeback timeout even though there's no pressure to use them for
something else?  Or has that been lengthened because you don't fear
power loss wiping volatile RAM?

Cheers, Ralph.

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