From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Petazzoni Subject: Re: [BUG,REGRESSION?] 3.11.6+,3.12: GbE iface rate drops to few KB/s Date: Wed, 20 Nov 2013 09:50:37 +0100 Message-ID: <20131120095037.07dc6fc0@skate> References: <87a9hagex1.fsf@natisbad.org> <20131112100126.GB23981@1wt.eu> <87vbzxd473.fsf@natisbad.org> <20131113072257.GB10591@1wt.eu> <20131117141940.GA18569@1wt.eu> <1384710098.8604.58.camel@edumazet-glaptop2.roam.corp.google.com> <87li0kkhzx.fsf@natisbad.org> <1384869194.8604.92.camel@edumazet-glaptop2.roam.corp.google.com> <20131119174323.GH913@1wt.eu> <1384885910.8604.110.camel@edumazet-glaptop2.roam.corp.google.com> <20131119184121.GN913@1wt.eu> <874n780wzc.fsf@natisbad.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: Willy Tarreau , Eric Dumazet , Florian Fainelli , simon.guinot@sequanux.org, netdev@vger.kernel.org, edumazet@google.com, Cong Wang , linux-arm-kernel@lists.infradead.org To: arno@natisbad.org (Arnaud Ebalard) Return-path: Received: from top.free-electrons.com ([176.31.233.9]:50969 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750858Ab3KTIuk (ORCPT ); Wed, 20 Nov 2013 03:50:40 -0500 In-Reply-To: <874n780wzc.fsf@natisbad.org> Sender: netdev-owner@vger.kernel.org List-ID: Arnaud, On Wed, 20 Nov 2013 00:53:43 +0100, Arnaud Ebalard wrote: > - It seems I will I have to spend some time on the SATA issues I > previously thought were an artefact of not cleaning my tree during a > debug session [1], i.e. there is IMHO an issue. I don't remember in detail what your SATA problem was, but just to let you know that we are currently debugging a problem that occurs on Armada XP (more than one core is needed for the problem to occur), with SATA (the symptom is that after some time of SATA usage, SATA traffic is stalled, and no SATA interrupts are generated anymore). We're still working on this one, and trying to figure out where the problem is. Best regards, Thomas -- Thomas Petazzoni, CTO, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com