From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1JXErI-0007UN-Mf for qemu-devel@nongnu.org; Thu, 06 Mar 2008 07:06:00 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1JXErG-0007U8-3u for qemu-devel@nongnu.org; Thu, 06 Mar 2008 07:05:59 -0500 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1JXErF-0007U4-S2 for qemu-devel@nongnu.org; Thu, 06 Mar 2008 07:05:57 -0500 Received: from rn-out-0910.google.com ([64.233.170.190]) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1JXErF-0006wo-FL for qemu-devel@nongnu.org; Thu, 06 Mar 2008 07:05:57 -0500 Received: by rn-out-0910.google.com with SMTP id j40so880678rnf.4 for ; Thu, 06 Mar 2008 04:05:56 -0800 (PST) Message-ID: <46d6db660803060405nef01989he022ae18a35c6ab5@mail.gmail.com> Date: Thu, 6 Mar 2008 13:05:55 +0100 From: "Christian MICHON" Subject: Re: [Qemu-devel] High CPU Usage with Linux 2.6.24 and Windows XP Guest (but not with 2.6.23) In-Reply-To: <20080306105838.0ce99a16.lists@pelvoux.nildram.co.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20080306105838.0ce99a16.lists@pelvoux.nildram.co.uk> Reply-To: qemu-devel@nongnu.org List-Id: qemu-devel.nongnu.org List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org On Thu, Mar 6, 2008 at 11:58 AM, Steve Fosdick wrote: > The hardware is an AMD64 processor and 1GB RAM. > > The problem with 2.6.24 seems only to occur with kqemu and also appears in dependant of whether dynamic ticks is enabled. A couple of timings should illustrate the difference. > > From VM start to login prompt: no kqemu=2m0s, 2.6.23=1m2s, 2.6.24=1m27s. > From login to last systray icon: no kqemu=6m25s, 2.6.23=1m47s, 2.6.24=4m46s > > Does anyone have any insight as to what may be happening or what tools I could use to gather enough information to help you guys diagnose the problem? > did you compile both kernels yourself, with similar/compatible config/compilers ? -- Christian -- http://detaolb.sourceforge.net/, a linux distribution for Qemu with Git inside !