From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.33) id 1CGcUd-0003NU-BO for qemu-devel@nongnu.org; Sun, 10 Oct 2004 08:08:03 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.33) id 1CGcUc-0003My-BV for qemu-devel@nongnu.org; Sun, 10 Oct 2004 08:08:02 -0400 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.33) id 1CGcSV-00028S-7U for qemu-devel@nongnu.org; Sun, 10 Oct 2004 08:05:51 -0400 Received: from [195.110.149.106] (helo=buzz.railnet.it) by monty-python.gnu.org with smtp (Exim 4.34) id 1CGcLZ-0004eT-6l for qemu-devel@nongnu.org; Sun, 10 Oct 2004 07:58:41 -0400 Message-ID: <416923EC.2060801@railnet.it> Date: Sun, 10 Oct 2004 13:58:36 +0200 From: ML MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Subject: [Qemu-devel] Speed comparison 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 Hi all! I have been using Qemu for a while now and first of all let me thank and congratulate all of you developers on a great, *GREAT* work so far! The first time I used Qemu I couldn't believe my eyes: it is fast, solid, smart! It's a real godsend for all developers who need to test applications on different platforms without continuous rebooting or switching from one computer to another. Just GREAT!!! I don't know whether this has been answered before (or if there is an obvious answer to this question), I have made some searching in the mailing list but couldn't find anything in the near past. The thing is that I'm using Qemu on a Slackware linux host running both Win98 and WinXP guests. I have noticed that the very same Windows application, which uses intensive math calculations, is way faster (at least twice as much) on the Win98 guest compared to the WinXP one. I am not talking about graphic rendering and stuff, just the plain time needed to perform the same math calculations. As a confirmation to this, on a general level Win98 guest's overall performance seems much better than XP's. I was just curious to know if this behavior can be related to something intrinsic to XP and 98 internals or if there are other Qemu related explanations (and possible fine tunings). TIA and keep up the fantastic work! Ciao, Piero