From: Rudy Zijlstra Subject: Re: Kernel BUG Date: Sat, 23 Dec 2006 00:46:30 +0100 Message-ID: <458C6E56.3070700@edsons.demon.nl> References: <458BC8AE.2030507@edsons.demon.nl> <1166794920.32117.42.camel@twins> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: nfs , Trond Myklebust , Linux Kernel Mailing List Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list2-new.sourceforge.net with esmtp (Exim 4.43) id 1Gxu64-0006U4-Au for nfs@lists.sourceforge.net; Fri, 22 Dec 2006 15:46:40 -0800 Received: from post-25.mail.nl.demon.net ([194.159.73.195]) by mail.sourceforge.net with esmtp (Exim 4.44) id 1Gxu63-0002CZ-0U for nfs@lists.sourceforge.net; Fri, 22 Dec 2006 15:46:40 -0800 To: Peter Zijlstra In-Reply-To: <1166794920.32117.42.camel@twins> List-Id: "Discussion of NFS under Linux development, interoperability, and testing." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: nfs-bounces@lists.sourceforge.net Errors-To: nfs-bounces@lists.sourceforge.net Peter Zijlstra wrote: >On Fri, 2006-12-22 at 12:59 +0100, Rudy Zijlstra wrote: > > >>Hi, >> >>I have a system where whenever i trigger a ongoing consistent NFS load i >>get the following kernel BUG: >> >>---------- >>kernel BUG at mm/truncate.c:311! >> >> > >Lotsa changes there: >try these: > http://client.linux-nfs.org/Linux-2.6.x/2.6.19/linux-2.6.19-NFS_ALL.dif > >And: > http://lkml.org/lkml/2006/12/19/279 > > > Thanks, i have now a 2.6.19.1 patched with the above NFS_ALL patchset running under load since about 17:00 and still going strong. So seems to have solved the problem! Also, performance seems to have significantly increased. I am testing this with MythTv with the storage over NFS. With HD LiveTV (which is what i use to test this), this translates into about 43Mbps total load, from almost 15Mbps video stream which is present 3x on the ethernet: 1/ from card to NFS disk 2/ read from NFS disk 3/ stream to viewer app. Doing this with HD streams before the patch set resulted in regular picture hickups. No hickups visible anymore (that i have seen, i have not been present all this time). Regards, Rudy ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs