From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262636AbULPIDu (ORCPT ); Thu, 16 Dec 2004 03:03:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262637AbULPIDu (ORCPT ); Thu, 16 Dec 2004 03:03:50 -0500 Received: from smtp209.mail.sc5.yahoo.com ([216.136.130.117]:40087 "HELO smtp209.mail.sc5.yahoo.com") by vger.kernel.org with SMTP id S262636AbULPIDs (ORCPT ); Thu, 16 Dec 2004 03:03:48 -0500 Message-ID: <41C14161.7020300@yahoo.com.au> Date: Thu, 16 Dec 2004 19:03:45 +1100 From: Nick Piggin User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.3) Gecko/20041007 Debian/1.7.3-5 X-Accept-Language: en MIME-Version: 1.0 To: lista4@comhem.se CC: mr@ramendik.ru, linux-kernel@vger.kernel.org Subject: Re: 2.6.10-rc3: kswapd eats CPU on start of memory-eating task References: <14380712.1103150975468.JavaMail.tomcat@pne-ps3-sn1> In-Reply-To: <14380712.1103150975468.JavaMail.tomcat@pne-ps3-sn1> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Voluspa wrote: > Earlier today I wrote: > > >>I find no problem when blender is the sole (large) application, but when a >>distributed computing client is running in the background the reported > > problems > >>surface. I use http://folding.stanford.edu for protein folding. It runs >>with a default of nice 19 and sucks up every free CPU cycle. I've never >>seen it interfere with anything prior to this swap issue - been running >>it since 2000. > > > More testing done to find the breaking point. Running the folding client and > blender: > > 2.6.8.1-bk2 is the last kernel without _any_ swapping problem (no screen freezes > etc) > | > | 2.6.9-rc1 and three -bk forward have oopses and loss of keyboard in X. > Can't test them. > | > 2.6.9-rc1-bk4 is the first functional kernel where the freezes show up. > > So it is a real regression. > Can you turn on magic sysrq in the kernel hacking menu, and press alt+sysrq+m a few times while kswapd is using lots of memory, please? Then run `dmesg -s 1000000 > dmesg.out`, and send the dmesg over, please? Thanks, Nick