Many processes stuck in zfs
oberman at es.net
Wed Mar 10 00:18:30 UTC 2010
> Date: Tue, 9 Mar 2010 21:53:55 +1100
> From: Peter Jeremy <peterjeremy at acm.org>
> Sender: owner-freebsd-stable at freebsd.org
> On 2010-Mar-09 10:15:53 +0100, Stefan Bethke <stb at 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.
Sigh! I found it. I build my systems without NIS and I had the stock
nsswitch.conf file. Fixed.
/me banging my head against the desk.
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman at es.net Phone: +1 510 486-8634
Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751
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