From owner-freebsd-stable@FreeBSD.ORG Mon Feb 13 07:47:24 2006 Return-Path: X-Original-To: stable@freebsd.org Delivered-To: freebsd-stable@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id F37EC16A420 for ; Mon, 13 Feb 2006 07:47:23 +0000 (GMT) (envelope-from peterjeremy@optushome.com.au) Received: from mail09.syd.optusnet.com.au (mail09.syd.optusnet.com.au [211.29.132.190]) by mx1.FreeBSD.org (Postfix) with ESMTP id B41CA43D53 for ; Mon, 13 Feb 2006 07:47:22 +0000 (GMT) (envelope-from peterjeremy@optushome.com.au) Received: from turion.vk2pj.dyndns.org (c220-239-19-236.belrs4.nsw.optusnet.com.au [220.239.19.236]) by mail09.syd.optusnet.com.au (8.12.11/8.12.11) with ESMTP id k1D7l8fP023438 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO); Mon, 13 Feb 2006 18:47:09 +1100 Received: from turion.vk2pj.dyndns.org (localhost.vk2pj.dyndns.org [127.0.0.1]) by turion.vk2pj.dyndns.org (8.13.4/8.13.4) with ESMTP id k1D7l8Ub001001; Mon, 13 Feb 2006 18:47:08 +1100 (EST) (envelope-from peter@turion.vk2pj.dyndns.org) Received: (from peter@localhost) by turion.vk2pj.dyndns.org (8.13.4/8.13.4/Submit) id k1D7l89d001000; Mon, 13 Feb 2006 18:47:08 +1100 (EST) (envelope-from peter) Date: Mon, 13 Feb 2006 18:47:08 +1100 From: Peter Jeremy To: Kevin Oberman Message-ID: <20060213074708.GA705@turion.vk2pj.dyndns.org> References: <43A136C7.9040302@plab.ku.dk> <20060213022747.6878E45041@ptavv.es.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060213022747.6878E45041@ptavv.es.net> X-PGP-Key: http://members.optusnet.com.au/peterjeremy/pubkey.asc User-Agent: Mutt/1.5.11 Cc: stable@freebsd.org Subject: Re: Odd performance problems after upgrade from 4.11 to 6.0-Stable X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 13 Feb 2006 07:47:24 -0000 On Sun, 2006-Feb-12 18:27:47 -0800, Kevin Oberman wrote: >This is not really a surprise. I know how running out of memory slows >things down. What does bother me is why it went from 6 hours in V4 14 >hours on V6. It could be that glimpse's memory access pattern makes it very sensitive to the available RAM and a slight reduction is causing a massive slowdown. >Unfortunately, my old box is going away in two weeks and I doubt that >I'll have much time to look at things before then. All I can say is >that either the wired memory for V6 is up so much that I page and swap a >lot mote or that the operations have slowed down way more than they >should have. Whilst you have access to the box, it might be useful to capture some of the VM subsystem information for both 4.x and 6.x (eg a couple of 'sysctl vm' at known intervals) under stress. This might help identify where the problem is. -- Peter Jeremy