From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755932Ab3AFLxY (ORCPT ); Sun, 6 Jan 2013 06:53:24 -0500 Received: from 1wt.eu ([62.212.114.60]:37530 "EHLO 1wt.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752129Ab3AFLxV (ORCPT ); Sun, 6 Jan 2013 06:53:21 -0500 Date: Sun, 6 Jan 2013 12:53:14 +0100 From: Willy Tarreau To: Romain Francoise Cc: Eric Dumazet , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: Major network performance regression in 3.7 Message-ID: <20130106115314.GA16031@1wt.eu> References: <1357435276.1678.5067.camel@edumazet-glaptop> <20130106013027.GV16031@1wt.eu> <1357436430.1678.5111.camel@edumazet-glaptop> <1357437086.1678.5135.camel@edumazet-glaptop> <1357438591.1678.5205.camel@edumazet-glaptop> <20130106025256.GY16031@1wt.eu> <1357457724.1678.5941.camel@edumazet-glaptop> <20130106092435.GZ16031@1wt.eu> <20130106102525.GA22151@1wt.eu> <87wqvqlej1.fsf@silenus.orebokech.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87wqvqlej1.fsf@silenus.orebokech.com> User-Agent: Mutt/1.4.2.3i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Jan 06, 2013 at 12:46:58PM +0100, Romain Francoise wrote: > Willy Tarreau writes: > > > That makes me think that I should try 3.8-rc2 since LRO was removed > > there :-/ > > Better yet, find a way to automate these tests so they can run continually > against net-next and find problems early... There is no way scripts will plug cables and turn on sleeping hardware unfortunately. I'm already following network updates closely enough to spot occasional regressions that are naturally expected due to the number of changes. Also, automated tests won't easily report a behaviour analysis, and behaviour is important in networking. You don't want to accept 100ms pauses all the time for example (and that's just an example). Right now my lab is simplified enough so that I can test something like 100 patches in a week-end, I think that's already fine. Willy