Date: Tue, 08 Apr 2008 11:26:05 -0400 From: Ender <ender@enderzone.com> To: Spike Ilacqua <spike@indra.com> Cc: freebsd-fs@freebsd.org, freebsd-stable@freebsd.org Subject: Re: ZFS deadlock Message-ID: <47FB8E8D.1030801@enderzone.com> In-Reply-To: <47FB99AC.7080504@indra.com> References: <0B67CBBD-11CB-44C2-807D-5F00654CDD35@headweb.com> <47FB2155.1030106@delphij.net> <3886278B-F65A-44BD-8307-C9889727FEA3@headweb.com> <47FB7355.4060802@enderzone.com> <47FB99AC.7080504@indra.com>
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Spike Ilacqua wrote: >> Depending on your work load you are just buying more time, so >> "reasonable" is a matter of perspective. :( I didn't see if you said >> you are on 32bit or 64bit? Keep in mind the kmem max is 1.5-2G on >> amd64 regardless of how much memory you have. If 512M arcsize crashes >> too soon for your tastes you can always lower it down to 256M, or >> 128M, etc. > > I tried for several weeks to get ZFS stable on a 64bit system with a > 1.5G kernel. The best uptime I ever got was 72 hours, the worst was > 2, the average about 24. Interestingly, most of the hangs were at off > hours, when the system was lightly loaded, had lots of free memory, > etc. That suggests to me a slow leak of some sort. > > Anyway, ZFS is not ready for production. Some people may get lucky, > but you can't count on it. > > Spike Very intresting. With 1.5G of kmem and a 64M arc_max the best uptime I had was 5 days, worst 1 day. Also most of my crashes are off hours as well. Another tidbit of information running things out of /tank instead of /tank/foo/bar/foo seems to lead to longer uptime, you might want to try that as well.
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