Date: Fri, 26 Feb 2010 17:40:21 +0100 From: Gerrit =?ISO-8859-1?Q?K=FChn?= <gerrit@pmp.uni-hannover.de> To: Daniel Braniss <danny@cs.huji.ac.il> Cc: stable@freebsd.org, Willem Jan Withagen <wjw@digiware.nl>, Jack Vogel <jfvogel@gmail.com>, Jeremy Chadwick <freebsd@jdc.parodius.com> Subject: mbuf leakage with nfs/zfs? (was: em0 freezes on ZFS server) Message-ID: <20100226174021.8feadad9.gerrit@pmp.uni-hannover.de> In-Reply-To: <E1Nl2JK-00033U-Fw@kabab.cs.huji.ac.il> 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> <E1Nkzry-0000AC-0S@kabab.cs.huji.ac.il> <20100226141754.86ae5a3f.gerrit@pmp.uni-hannover.de> <E1Nl1mb-0002Mx-M9@kabab.cs.huji.ac.il> <E1Nl2JK-00033U-Fw@kabab.cs.huji.ac.il>
index | next in thread | previous in thread | raw e-mail
On Fri, 26 Feb 2010 17:41:02 +0200 Daniel Braniss <danny@cs.huji.ac.il> 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: <http://lists.freebsd.org/pipermail/freebsd-current/2009-December/014062.html>. 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 Gerrithome | help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20100226174021.8feadad9.gerrit>