From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.33) id 1Bj1gZ-0002GI-VI for qemu-devel@nongnu.org; Fri, 09 Jul 2004 16:09:32 -0400 Received: from exim by lists.gnu.org with spam-scanned (Exim 4.33) id 1Bj1gZ-0002G6-GF for qemu-devel@nongnu.org; Fri, 09 Jul 2004 16:09:31 -0400 Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.33) id 1Bj1gZ-0002G3-Dr for qemu-devel@nongnu.org; Fri, 09 Jul 2004 16:09:31 -0400 Received: from [80.59.103.181] (helo=claunia.com) by monty-python.gnu.org with esmtp (TLSv1:DES-CBC3-SHA:168) (Exim 4.34) id 1Bj1eB-0008GD-Dc for qemu-devel@nongnu.org; Fri, 09 Jul 2004 16:07:13 -0400 From: "Natalia Portillo" Subject: RE: [Qemu-devel] Inquiry, speed comparison on OS X, QEMU vs Virtual PC Date: Fri, 9 Jul 2004 21:07:38 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable In-Reply-To: <7431CE2A-D1DF-11D8-A23B-000A2796D230@free.fr> Message-Id: 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 I think that including support for the PowerPC swapping instructions in = QEMU will break compatibility with host PowerPCs before G3, so that = instructions should be used in a run-time capability detection scheme.=20 > -----Mensaje original----- > De: qemu-devel-bounces+iosglpgc=3Dteleline.es@nongnu.org=20 > [mailto:qemu-devel-bounces+iosglpgc=3Dteleline.es@nongnu.org]=20 > En nombre de Pierre d'Herbemont > Enviado el: viernes, 09 de julio de 2004 20:38 > Para: qemu-devel@nongnu.org > Asunto: Re: [Qemu-devel] Inquiry, speed comparison on OS X,=20 > QEMU vs Virtual PC >=20 > I probably should add that the Mac OS X version that is=20 > avalaible for download doesn't include support for the=20 > PowerPC swapping instructions (little-endian storing and=20 > loading instructions). Next release will. >=20 > Pierre >=20 > Le 6 juil. 04, =E0 02:29, dguinan@mac.com a =E9crit : >=20 > > It was precisely because it has not yet been optimized that I was=20 > > curious of first impressions. The fact that it has been=20 > described as=20 > > "somewhat" slower is encouraging. No one expects it to be=20 > faster than=20 > > VPC out the gate, but to be in the same ballpark is quite an=20 > > achievement. > > > > -Daniel > > > > > > On Jul 5, 2004, at 5:23 PM, Leigh Dyer wrote: > > > >> On Mon, 2004-07-05 at 15:24 -0700, Daniel J.Guinan wrote: > >>> I'm curious, how does the speed compare to Virtual PC? > >>> > >> > >> Not terribly well yet - on my 1Ghz Tibook, it feels about the same=20 > >> speed as on my 800Mhz PIII desktop PC at work, which is to=20 > say that=20 > >> the emulated system seems somewhere around=20 > >> high-end-468/low-end-Pentium speed. However, it's important to=20 > >> remember that Virtual PC: > >> > >> * has been around for ages, and has seen lots of development and=20 > >> optimisation > >> * uses a hand-written and heavily optimised x86->PPC translator > >> * uses special PPC features like Altivec and little-endian mode to=20 > >> speed things up > >> * uses the host system's MMU to accelerate memory access > >> > >> Qemu's still fast enough to be usable for a great many=20 > things though,=20 > >> so if you're debating whether or not to try it, by all=20 > means download=20 > >> it and give it a go. > >> > >> Thanks > >> Leigh > >> > >> > >> > >> _______________________________________________ > >> Qemu-devel mailing list > >> Qemu-devel@nongnu.org > >> http://lists.nongnu.org/mailman/listinfo/qemu-devel > >> > > > > > > > > _______________________________________________ > > Qemu-devel mailing list > > Qemu-devel@nongnu.org > > http://lists.nongnu.org/mailman/listinfo/qemu-devel > > >=20 >=20 >=20 > _______________________________________________ > Qemu-devel mailing list > Qemu-devel@nongnu.org > http://lists.nongnu.org/mailman/listinfo/qemu-devel