From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jean-Daniel Pauget Subject: Re: intermittant petabyte usage reported with broadcom nic Date: Mon, 2 Apr 2007 12:31:48 +0200 Message-ID: <20070402103148.GB26022@disjunkt.com> References: <20070402074108.GB8345@zip.com.au> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Andrew Morton , linux-kernel@vger.kernel.org, netdev@vger.kernel.org To: CaT Return-path: Received: from smtp19.orange.fr ([80.12.242.19]:40485 "EHLO smtp19.orange.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965396AbXDBKfx (ORCPT ); Mon, 2 Apr 2007 06:35:53 -0400 Content-Disposition: inline In-Reply-To: <20070402074108.GB8345@zip.com.au> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org I don't know if a me-too may help you, but I have exactly the same=20 trouble on a whole set of dell servers, all with bmx drivers (suse = 10.1 kernel) and values fetched by an homebrew daemon and collected via = rrd. > uname -a Linux toronto 2.6.16.27-0.6-smp #1 SMP Wed Dec 13 09:34:50 UTC 2006 x86= _64=20 x86_64 x86_64 GNU/Linux =2E../... <6>Broadcom NetXtreme II Gigabit Ethernet Driver bnx2 v1.4.31 (January = 19, 2006) <6>ACPI: PCI Interrupt 0000:09:00.0[A] -> GSI 16 (level, low) -> IRQ 16= 9 <6>usbcore: registered new driver hub <6>eth0: Broadcom NetXtreme II BCM5708 1000Base-T (B2) PCI-X 64-bit 133= MHz found at mem f4000000, IRQ 169, node addr 0015c5f18146 <6>ACPI: PCI Interrupt 0000:05:00.0[A] -> GSI 16 (level, low) -> IRQ 16= 9 <6>eth1: Broadcom NetXtreme II BCM5708 1000Base-T (B2) PCI-X 64-bit 133= MHz found at mem f8000000, IRQ 169, node addr 0015c5f18144 =2E../... On Mon, Apr 02, 2007 at 05:41:08PM +1000, CaT wrote: > On Mon, Apr 02, 2007 at 12:13:00AM -0700, Andrew Morton wrote: > > On Mon, 2 Apr 2007 11:43:19 +1000 CaT wrote: > >=20 > > > I take minute by minute snapshots of network traffic by sampling > > > /proc/net/dev and most of the time everything works fine. Occasio= nally > > > though I get petabyte byte traffic and corresponding packet traff= ic. on my side measures are performed on a 10sec frequency basis > > How frequently? >=20 > I can count about 6 over the past month. almost once a day per machine. > > Are you able to provide some actual numbers (expected and actual=20 > > values), > > so we can look at the bit patterns? I can patch my app in order to give you those exact numbers (I'm af= raid=20 not to be an rrd expert to extract real past values reported) on another side, I cannot really test new drivers on those machine = just=20 for those tests. > > > This happens on an AMD64, dual core smp box with Broadcom NetXtre= me=20 > > > II > > > nics. > >=20 > > What driver drivers that? b44.c? > bnx2 >=20 > > > The issue happens with both nics but at different times. The same > > > sampling code runs on p4 boxes with ht on and e1000 nics without = issues > > > so I don't believe it's an issue with my code (famous last words = :) exactly the same, just xeons instead of AMD. --=20 Jean-Daniel Pauget T=E9l: +33 (0)2 33 17 20 16 2, rue Andr=E9 PELCA 50580 Denneville-Plage France