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>
next in thread | previous in thread | raw e-mail | index | archive | help
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 Gerrit
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20100226174021.8feadad9.gerrit>