From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1GvS4k-0002Y3-On for qemu-devel@nongnu.org; Sat, 16 Dec 2006 00:27:10 -0500 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1GvS4j-0002XT-ES for qemu-devel@nongnu.org; Sat, 16 Dec 2006 00:27:09 -0500 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1GvS4j-0002XI-BZ for qemu-devel@nongnu.org; Sat, 16 Dec 2006 00:27:09 -0500 Received: from [81.29.64.88] (helo=mail.shareable.org) by monty-python.gnu.org with esmtps (TLS-1.0:DHE_RSA_AES_256_CBC_SHA:32) (Exim 4.52) id 1GvS4j-0003V0-5y for qemu-devel@nongnu.org; Sat, 16 Dec 2006 00:27:09 -0500 Received: from mail.shareable.org (localhost [127.0.0.1]) by mail.shareable.org (8.12.11.20060308/8.12.11) with ESMTP id kBG5R68n025432 for ; Sat, 16 Dec 2006 05:27:06 GMT Received: (from jamie@localhost) by mail.shareable.org (8.12.11.20060308/8.12.8/Submit) id kBG5R6YG025430 for qemu-devel@nongnu.org; Sat, 16 Dec 2006 05:27:06 GMT Date: Sat, 16 Dec 2006 05:27:06 +0000 From: Jamie Lokier Subject: Re: [Qemu-devel] Qemu speed vs vmplayer? Message-ID: <20061216052706.GB21492@mail.shareable.org> References: <10541fa50612130009s798a1587n4a3d2b8b51baa334@mail.gmail.com> <200612141645.40403.paul@codesourcery.com> <4582CBA6.6000809@tidetamerboatlifts.com> <200612151613.35422.paul@codesourcery.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200612151613.35422.paul@codesourcery.com> 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 Paul Brook wrote: > > OK, so mmap is not the way to increase some speed. What needs to be > > done to provide a higher Qemu+KQEMU performance, comparable to > > VMPlayer? How does VMPlayer manage to be so much faster than Qemu? Is > > this simply an I/O bottleneck? How would I go about finding out what > > the differences are and how we can improve Qemu+KQEMU performance? > > A copy of the kqemu source would be a good start. As would reading VMware peoples' publications on the tricks they've used. I'm thinking of a paper which compares VMware's performance on hardware VM (newer Intel/AMD) versus software VM, and finds software is actually faster in many cases. It happens to mention in passing a lot of tricks used by VMware. -- Jamie