From owner-freebsd-questions@FreeBSD.ORG Wed May 28 07:37:02 2008 Return-Path: Delivered-To: questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 5F15E106566B; Wed, 28 May 2008 07:37:02 +0000 (UTC) (envelope-from tataz@tataz.chchile.org) Received: from postfix2-g20.free.fr (postfix2-g20.free.fr [212.27.60.43]) by mx1.freebsd.org (Postfix) with ESMTP id 0F94F8FC12; Wed, 28 May 2008 07:37:01 +0000 (UTC) (envelope-from tataz@tataz.chchile.org) Received: from smtp5-g19.free.fr (smtp5-g19.free.fr [212.27.42.35]) by postfix2-g20.free.fr (Postfix) with ESMTP id EAE2226AD996; Wed, 28 May 2008 07:19:52 +0200 (CEST) Received: from smtp5-g19.free.fr (localhost.localdomain [127.0.0.1]) by smtp5-g19.free.fr (Postfix) with ESMTP id E8BEC3F61D3; Wed, 28 May 2008 09:20:14 +0200 (CEST) Received: from tatooine.tataz.chchile.org (tataz.chchile.org [82.233.239.98]) by smtp5-g19.free.fr (Postfix) with ESMTP id AD2C43F6168; Wed, 28 May 2008 09:20:14 +0200 (CEST) Received: from obiwan.tataz.chchile.org (unknown [192.168.1.25]) by tatooine.tataz.chchile.org (Postfix) with ESMTP id 23AF09B497; Wed, 28 May 2008 07:16:55 +0000 (UTC) Received: by obiwan.tataz.chchile.org (Postfix, from userid 1000) id 0554F4089; Wed, 28 May 2008 09:16:55 +0200 (CEST) Date: Wed, 28 May 2008 09:16:54 +0200 From: Jeremie Le Hen To: Yani Brankov Message-ID: <20080528071654.GH80973@obiwan.tataz.chchile.org> References: <4831A0A5.6040808@bulinfo.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4831A0A5.6040808@bulinfo.net> User-Agent: Mutt/1.5.15 (2007-04-06) Cc: questions@freebsd.org, performance@freebsd.org Subject: Re: Low/Jerky performance in FreeBSD 7 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 28 May 2008 07:37:02 -0000 On Mon, May 19, 2008 at 08:45:41AM -0700, Yani Brankov wrote: > I recently updated to FreeBSD 7 and noticed that my box started to perform > as windows does under heavier loads. The mouse starts to be jerky when > compiling, window updates/redraws are slow and bump the CPU usage up to > 100%. I attributed this to the mga driver which comes with the distro in the > beginning. However, I later noticed the same happens even when X has not > been started. For instance, I start a kernel compile and the console mouse > becomes jumpy. All these have never happened before with FreeBSD on this > box. It has enough memory (1.5G) and relatively fast CPU (2.5GHz). I started > to think this may be originating from kernel level (irq handling, long times > in giant locked code during syscalls, etc). > > I am wondering whether it is only me who has hit this problem or it is more > common. It may be also related to hardware configuration, etc. I'm trying to > figure out. Try profiling your kernel with PMC: http://lists.freebsd.org/pipermail/freebsd-current/2006-February/061096.html Regards, -- Jeremie Le Hen < jeremie at le-hen dot org >< ttz at chchile dot org >