From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 8 Aug 2001 17:25:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 8 Aug 2001 17:25:23 -0400 Received: from vasquez.zip.com.au ([203.12.97.41]:23047 "EHLO vasquez.zip.com.au") by vger.kernel.org with ESMTP id ; Wed, 8 Aug 2001 17:25:05 -0400 Message-ID: <3B71AF91.5577667E@zip.com.au> Date: Wed, 08 Aug 2001 14:30:57 -0700 From: Andrew Morton X-Mailer: Mozilla 4.77 [en] (X11; U; Linux 2.4.7 i686) X-Accept-Language: en MIME-Version: 1.0 To: Alex Kerkhove CC: linux-kernel@vger.kernel.org Subject: Re: x86 SMP and RPC/NFS problems In-Reply-To: <1C48875BDE7ED0469485A5FD49925C4AF01265@zmx.staff.zeelandnet.nl> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Alex Kerkhove wrote: > > Hi, > > We're running a quite busy mailserver (50.000 mailboxes, 170000+ msgs a > day) with maildir 'mailboxes' on an NFS volume. The server was running > redhat 7.1 with i686 2.4.3-12smp kernel. > > Ever since the machine came into full production we've had big problems > on our dell 2540 dual p3-733, 1Gb RAM machine. At least twice a day we > would see nfs server timeouts, followed by "can't get request slot" > messages completeley hanging the machine and only a reboot could get the > system going again. We've tried every cure known to man to fix this > problem (changing nics, mount params, interal buffers, etc) no luck. There were some SMP bugs in the NFS client code a while back but I don't recall any on the server side. Is it reproducible with 2.4.7? What NICs have you tried? If they were ne2k and/or 3com then you've been bitten by the APIC bug. -