From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755046Ab3AFBag (ORCPT ); Sat, 5 Jan 2013 20:30:36 -0500 Received: from 1wt.eu ([62.212.114.60]:37517 "EHLO 1wt.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754618Ab3AFBad (ORCPT ); Sat, 5 Jan 2013 20:30:33 -0500 Date: Sun, 6 Jan 2013 02:30:27 +0100 From: Willy Tarreau To: Eric Dumazet Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: Major network performance regression in 3.7 Message-ID: <20130106013027.GV16031@1wt.eu> References: <20130105214958.GA19814@1wt.eu> <1357427926.1678.4771.camel@edumazet-glaptop> <20130105232913.GQ16031@1wt.eu> <1357430523.1678.4901.camel@edumazet-glaptop> <20130106005053.GS16031@1wt.eu> <1357435276.1678.5067.camel@edumazet-glaptop> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1357435276.1678.5067.camel@edumazet-glaptop> 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 Sat, Jan 05, 2013 at 05:21:16PM -0800, Eric Dumazet wrote: > On Sun, 2013-01-06 at 01:50 +0100, Willy Tarreau wrote: > > > Yes, I've removed all zero counters in this short view for easier > > reading (complete version appended at the end of this email). This > > was after around 140 GB were transferred : > > OK I only wanted to make sure skb were not linearized in xmit. > > Could you try to disable CONFIG_COMPACTION ? It's already disabled. > ( This is the other thread mentioning this : "ppoll() stuck on POLLIN > while TCP peer is sending" ) Ah interesting because these were some of the mm patches that I had tried to revert. Willy