From owner-freebsd-fs@FreeBSD.ORG Tue Sep 28 11:24:38 2010 Return-Path: Delivered-To: fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 622EE1065670; Tue, 28 Sep 2010 11:24:38 +0000 (UTC) (envelope-from wjw@digiware.nl) Received: from mail.digiware.nl (mail.ip6.digiware.nl [IPv6:2001:4cb8:1:106::2]) by mx1.freebsd.org (Postfix) with ESMTP id F003C8FC22; Tue, 28 Sep 2010 11:24:37 +0000 (UTC) Received: from localhost (localhost.digiware.nl [127.0.0.1]) by mail.digiware.nl (Postfix) with ESMTP id F0615153434; Tue, 28 Sep 2010 13:24:36 +0200 (CEST) X-Virus-Scanned: amavisd-new at digiware.nl Received: from mail.digiware.nl ([127.0.0.1]) by localhost (rack1.digiware.nl [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id d7i5zrXYXYnO; Tue, 28 Sep 2010 13:24:31 +0200 (CEST) Received: from [127.0.0.1] (opteron [192.168.10.67]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by mail.digiware.nl (Postfix) with ESMTPSA id 08986153433; Tue, 28 Sep 2010 13:24:31 +0200 (CEST) Message-ID: <4CA1D06C.9050305@digiware.nl> Date: Tue, 28 Sep 2010 13:24:28 +0200 From: Willem Jan Withagen User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.9) Gecko/20100915 Lightning/1.0b2 Thunderbird/3.1.4 MIME-Version: 1.0 To: stable@freebsd.org, fs@freebsd.org Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Subject: Still getting kmem exhausted panic 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, 28 Sep 2010 11:24:38 -0000 Hi, This is with stable as of yesterday,but with an un-tunned ZFS box I was still able to generate a kmem exhausted panic. Hard panic, just 3 lines. The box contains 12Gb memory, runs on a 6 core (with HT) xeon. 6* 2T WD black caviar in raidz2 with 2*512Mb mirrored log. The box died while rsyncing 5.8T from its partnering system. (that was the only activity on the box) So the obvious would to conclude that auto-tuning voor ZFS on 8.1-Stable is not yet quite there. So I guess that we still need tuning advice even for 8.1. And thus prevent a hard panic. At the moment trying to 'zfs send | rsh zfs receive' the stuff. Which seems to run at about 40Mb/sec, and is a lot faster than the rsync stuff. --WjW