From owner-freebsd-fs@FreeBSD.ORG Tue Apr 8 16:26:30 2008 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 3E3A91065671 for ; Tue, 8 Apr 2008 16:26:30 +0000 (UTC) (envelope-from ender@enderzone.com) Received: from www.ksdhost.com (www.ksdhost.com [75.126.66.82]) by mx1.freebsd.org (Postfix) with ESMTP id E426E8FC1F for ; Tue, 8 Apr 2008 16:26:29 +0000 (UTC) (envelope-from ender@enderzone.com) Received: (qmail 34570 invoked from network); 8 Apr 2008 12:26:29 -0400 Received: from unknown (HELO ?192.168.1.6?) (206.48.228.163) by www.ksdhost.com with SMTP; 8 Apr 2008 12:26:29 -0400 Message-ID: <47FB8E8D.1030801@enderzone.com> Date: Tue, 08 Apr 2008 11:26:05 -0400 From: Ender User-Agent: Thunderbird 2.0.0.12 (Windows/20080213) MIME-Version: 1.0 To: Spike Ilacqua 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> In-Reply-To: <47FB99AC.7080504@indra.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: freebsd-fs@freebsd.org, freebsd-stable@freebsd.org Subject: Re: ZFS deadlock X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Apr 2008 16:26:30 -0000 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.