From owner-freebsd-stable@FreeBSD.ORG Fri Feb 26 16:40:52 2010 Return-Path: Delivered-To: stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id DB741106566B for ; Fri, 26 Feb 2010 16:40:52 +0000 (UTC) (envelope-from gerrit@pmp.uni-hannover.de) Received: from mrelay1.uni-hannover.de (mrelay1.uni-hannover.de [130.75.2.106]) by mx1.freebsd.org (Postfix) with ESMTP id 621388FC0A for ; Fri, 26 Feb 2010 16:40:52 +0000 (UTC) Received: from www.pmp.uni-hannover.de (www.pmp.uni-hannover.de [130.75.117.2]) by mrelay1.uni-hannover.de (8.14.2/8.14.2) with ESMTP id o1QGeLkT019474; Fri, 26 Feb 2010 17:40:22 +0100 Received: from pmp.uni-hannover.de (arc.pmp.uni-hannover.de [130.75.117.1]) by www.pmp.uni-hannover.de (Postfix) with SMTP id 19E7924; Fri, 26 Feb 2010 17:40:21 +0100 (CET) Date: Fri, 26 Feb 2010 17:40:21 +0100 From: Gerrit =?ISO-8859-1?Q?K=FChn?= To: Daniel Braniss Message-Id: <20100226174021.8feadad9.gerrit@pmp.uni-hannover.de> In-Reply-To: References: <4B86F384.3010308@digiware.nl> <2a41acea1002251459v40e8c6ddxd0437decbada4594@mail.gmail.com> <4B8795B1.4020006@digiware.nl> <20100226120339.GB17798@icarus.home.lan> <20100226133138.d47dd080.gerrit@pmp.uni-hannover.de> <20100226134429.041ea6f2.gerrit@pmp.uni-hannover.de> <20100226141754.86ae5a3f.gerrit@pmp.uni-hannover.de> Organization: Albert-Einstein-Institut (MPI =?ISO-8859-1?Q?f=FCr?= Gravitationsphysik & IGP =?ISO-8859-1?Q?Universit=E4t?= Hannover) X-Mailer: Sylpheed 2.7.1 (GTK+ 2.18.4; i386-portbld-freebsd7.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-PMX-Version: 5.5.9.388399, Antispam-Engine: 2.7.2.376379, Antispam-Data: 2010.2.26.162725 Cc: stable@freebsd.org, Willem Jan Withagen , Jack Vogel , Jeremy Chadwick Subject: mbuf leakage with nfs/zfs? (was: em0 freezes on ZFS server) X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 26 Feb 2010 16:40:52 -0000 On Fri, 26 Feb 2010 17:41:02 +0200 Daniel Braniss wrote about Re: em0 freezes on ZFS server : DB> check: DB> ftp://ftp.cs.huji.ac.il/users/danny/freebsd/plot.ps DB> x is seconds, y is mbus current. Looks not as bad as mine. I had 37k when I rebooted the machine some minutes ago (and it's basically idle, just serving a few nfs clients that don't do much). But from the values Jeremy has posted and from my own comparsisons here I would think that something like 5k of mbuf clusters would be normal for my machine (and probably also for yours). Some more info from my side: In the meantime I also tried a different network interface. The nfe-interface that is onboard causes the same problems, so it is probably not an em-specific issue. Furthermore I found this via Google: . I patched and recompiled my kernel with this, just to try it out. Right now I have 2264/1321/3585 mbufs in use (current/cache/total) 1239/1017/2256/65000 mbuf clusters in use (current/cache/total/max) 1239/809 mbuf+clusters out of packet secondary zone in use (current/cache) but the uptime is only 12min so far. In some hours I'll know for certain if this patch has anything to do with the problem. cu Gerrit