Date: Tue, 09 Mar 2010 16:25:54 -0800 From: "Kevin Oberman" <oberman@es.net> To: Peter Jeremy <peterjeremy@acm.org> Cc: FreeBSD Stable <freebsd-stable@freebsd.org>, Stefan Bethke <stb@lassitu.de> Subject: Re: Many processes stuck in zfs Message-ID: <20100310002554.9E8E81CC18@ptavv.es.net> In-Reply-To: Your message of "Tue, 09 Mar 2010 16:18:25 PST." <20100310001825.4B2061CC0D@ptavv.es.net>
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Sigh. My brain is fried. I replied to the wrong thread. Pleas ignore this. -- R. Kevin Oberman, Network Engineer Energy Sciences Network (ESnet) Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) E-mail: oberman@es.net Phone: +1 510 486-8634 Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751 > Date: Tue, 09 Mar 2010 16:18:25 -0800 > From: "Kevin Oberman" <oberman@es.net> > Sender: owner-freebsd-stable@freebsd.org > > > Date: Tue, 9 Mar 2010 21:53:55 +1100 > > From: Peter Jeremy <peterjeremy@acm.org> > > Sender: owner-freebsd-stable@freebsd.org > > > > On 2010-Mar-09 10:15:53 +0100, Stefan Bethke <stb@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. > > Thanks! > -- > R. Kevin Oberman, Network Engineer > Energy Sciences Network (ESnet) > Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab) > E-mail: oberman@es.net Phone: +1 510 486-8634 > Key fingerprint:059B 2DDF 031C 9BA3 14A4 EADA 927D EBB3 987B 3751 > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscribe@freebsd.org" >
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