From: Trond Myklebust Subject: Re: e1000 intel driver bug (which impacts nfs) Date: 03 Jun 2002 09:48:14 +0200 Sender: nfs-admin@lists.sourceforge.net Message-ID: References: <20020603002819.A5501@stud.ntnu.no> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Return-path: Received: from pat.uio.no ([129.240.130.16]) by usw-sf-list1.sourceforge.net with esmtp (Exim 3.31-VA-mm2 #1 (Debian)) id 17EmZs-0005iS-00 for ; Mon, 03 Jun 2002 00:48:32 -0700 Received: from charged.uio.no ([129.240.86.49]) by pat.uio.no with esmtp (Exim 2.12 #7) id 17EmZf-000526-00 for nfs@lists.sourceforge.net; Mon, 3 Jun 2002 09:48:19 +0200 Received: from trondmy by charged.uio.no with local (Exim 2.12 #1) id 17EmZa-0001zF-00 for nfs@lists.sourceforge.net; Mon, 3 Jun 2002 09:48:14 +0200 To: nfs@lists.sourceforge.net In-Reply-To: <20020603002819.A5501@stud.ntnu.no> Errors-To: nfs-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Id: Discussion of NFS under Linux development, interoperability, and testing. List-Unsubscribe: , List-Archive: >>>>> " " =3D=3D Thomas Lang=E5s writes: > We've also got problems with nfs-hangs when transfering large > files (ie. files around 300-400M, sometime we have to go a bit > higher tho, like 2GB-3GB files, but it's always possible to > trigger this. However, we don't need to be jumping through > hoops to "fix it", after a min or so, it's ok again. It seems > to me like there's a VM problem or something. > We've got 2GB mem on the machines which are suffering from > theese problems. There is a problem with highmem that I'm just barely getting to grips with: NFS is able to starve the kernel of highmem bounce buffer resources because we kmap() the pages for too long (surprise: NFS predates the highmem code by several years and so nobody ever considered kmap() when the design was made). An attempt at a fix has been merged in to the development kernels as of 2.5.19. The same patches are available for 2.4.19-pre8 + NFS_ALL. If you'd like to test it out, you will need http://www.fys.uio.no/~trondmy/src/2.4.19-pre8/linux-2.4.19-NFS_ALL.dif + the 4 patches from http://www.fys.uio.no/~trondmy/src/2.4.19-pre8/alpha Cheers, Trond _______________________________________________________________ Don't miss the 2002 Sprint PCS Application Developer's Conference August 25-28 in Las Vegas -- http://devcon.sprintpcs.com/adp/index.cfm _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs