From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Jackson Subject: Re: Excessive ethernet interrupts on AM335x board Date: Wed, 13 Mar 2013 10:36:59 +0000 Message-ID: <514056CB.6070808@mimc.co.uk> References: <513F4B58.1000204@mimc.co.uk> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from mercuryimc.plus.com ([80.229.200.144]:44248 "EHLO centos1.newflow.co.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756308Ab3CMKhB (ORCPT ); Wed, 13 Mar 2013 06:37:01 -0400 In-Reply-To: Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Daniel Mack Cc: "linux-omap@vger.kernel.org" , lkml On 13/03/13 10:32, Daniel Mack wrote: > On Tue, Mar 12, 2013 at 4:35 PM, Mark Jackson wrote: >> I'm just fighting an issue with ethernet on our custom AM335x board:- >> >> # uname -a >> Linux nanobone 3.9.0-rc2-00113-gd60f039 #139 Tue Mar 12 15:14:01 GMT 2013 armv7l GNU/Linux >> >> Every now and then, the whole unit slows to a crawl. The only indication of any problem is:- >> >> (a) the serial tty port becomes much less responsive >> (b) normal ping times jump from 1ms to >10sec (sometimes >20sec !!) >> (c) the ethernet interrupt count rockets (see below) >> >> I've tried to force the problem by flood pinging from my PC. >> As you can see, when I stop the flood pings, the nfs link is now reported >> as being lost. > > I had the same problem. Please check this patch, I'm sure it will fix you issue: > > https://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=d35162f89b8f00537d7b240b76d2d0e8b8d29aa0 Brilliant ... that's the one !! Cheers Mark J.