On 2010-Mar-09 10:15:53 +0100, Stefan Bethke <s...@lassitu.de> wrote: >Over the past couple of months, I've more or less regularly observed machines >having more and more processes stuck in the zfs wchan. The processes never >recover from that,
How long have you waited?
There seems to be a problem with low free memory handling that causes ZFS
to turn into cold molasses. The work-around is to run a program that
allocates a decent size chunk of memory and then exits. The original
suggestion was something like:
perl -e '@x = (0) x 1000000;'
I've written a short program that allocates and dirties ~100MB and then
exits and run it from cron.
--
Peter Jeremy
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