From owner-freebsd-stable@FreeBSD.ORG Fri Sep 3 20:32:46 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id DCDD310656C0 for ; Fri, 3 Sep 2010 20:32:46 +0000 (UTC) (envelope-from varga.michal@gmail.com) Received: from mail-bw0-f54.google.com (mail-bw0-f54.google.com [209.85.214.54]) by mx1.freebsd.org (Postfix) with ESMTP id 1CD1F8FC0A for ; Fri, 3 Sep 2010 20:32:45 +0000 (UTC) Received: by bwz20 with SMTP id 20so2273007bwz.13 for ; Fri, 03 Sep 2010 13:32:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:subject:from:to:cc :in-reply-to:references:content-type:organization:date:message-id :mime-version:x-mailer:content-transfer-encoding; bh=ukW7rghEmybZzWubT4DH5lioAnOU6ZjsNL9opXTILdE=; b=R81T5fqi6xBJxF9k7SVU1f+6Exku+Vpq/ouMrow3fxm3a7QX8JljXkk5OpodGosF+N H/fuqNVwhAD3Koilu62NzyafTK0vO5flU4wRM07kTGspI0W4FW732mgDrrD7z7gvoHU5 0Q34tekce7dkWhFWUnifsmzSWEbvUQyPAmQzk= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=subject:from:to:cc:in-reply-to:references:content-type:organization :date:message-id:mime-version:x-mailer:content-transfer-encoding; b=nX4xyLtxiGfdxD4hRukJUT8Tm9oI/m8a59LvlNsWMXrClxG7RIY2XcQ3vC4HR/g8F4 3d8Y53t1Pgw4uouKSsnoLpMABE983YNhTDlerNKgoMXVs2IMA9vZvsRd2G/SRyj6dMbD wzaMSt59lYxCjNoFWDVZBwSejXjm/kSq79ON4= Received: by 10.204.141.16 with SMTP id k16mr826317bku.177.1283544522645; Fri, 03 Sep 2010 13:08:42 -0700 (PDT) Received: from [10.0.101.2] (73.44.broadband10.iol.cz [90.177.44.73]) by mx.google.com with ESMTPS id f18sm1784904bkf.3.2010.09.03.13.08.40 (version=TLSv1/SSLv3 cipher=RC4-MD5); Fri, 03 Sep 2010 13:08:41 -0700 (PDT) From: Michal Varga To: Jim Bryant In-Reply-To: <4C814665.3070306@gmail.com> References: <4C7F7C0F.8080004@icyb.net.ua> <4C7F9ACE.80705@bally-wulff.de> <4C814665.3070306@gmail.com> Content-Type: text/plain; charset="UTF-8" Organization: Stonehenge Date: Fri, 03 Sep 2010 22:08:38 +0200 Message-ID: <1283544518.26203.33.camel@xenon> Mime-Version: 1.0 X-Mailer: Evolution 2.30.3 FreeBSD GNOME Team Port Content-Transfer-Encoding: 7bit Cc: jan.grant@bristol.ac.uk, freebsd-stable@freebsd.org, Luca Pizzamiglio Subject: Re: Tuning the scheduler? Desktop with a CPU-intensive task becomes rapidly unusable. 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: Fri, 03 Sep 2010 20:32:46 -0000 On Fri, 2010-09-03 at 14:03 -0500, Jim Bryant wrote: > i just noticed this too... had a build going of qt-creator, and then > started a /usr/src make clean, and had to abort the qt-creator build to > get the make clean to finish. it was taking forever to even paint the > xterm in the make clean window. This has been the state of -stable for at least an year, I have yet to see a 7-stable machine that doesn't exhibit this behavior. This wasn't the case with 7 in the very beginning and only started slowly building up over time, particularly around the time of one specific xorg import - which one it was? 7.4? I guess. Every bit of performance went down the drain hole by that time and it's on that same level ever since (it's rather easy to get used to it while working on a 7-stable desktop, but would be nice having the old pre-ULE performance levels back, sometime). On the other hand, at least from some of my observations, the terrible desktop performance isn't strictly CPU-bound, I/O definitely has some say in this. You can (you should, mileage may vary) see this by trying to extract a few-GB archive in the background. While clearly no more than a single CPU is ever occupied by that process (and there's few other happily idling), you can spend waiting up to a few minutes just to get a new application launched (or even just a running one getting redrawn, in case part of it was swapped out at the moment). But as I said, for 7-stable, this has been the case for a veeeeeery long time. m. -- Michal Varga, Stonehenge (Gmail account)