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RE: [Qemu-devel] Inquiry, speed comparison on OS X, QEMU vs Virtual PC
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 |
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.
> -----Mensaje original-----
> De: address@hidden
> [mailto:address@hidden
> En nombre de Pierre d'Herbemont
> Enviado el: viernes, 09 de julio de 2004 20:38
> Para: address@hidden
> Asunto: Re: [Qemu-devel] Inquiry, speed comparison on OS X,
> QEMU vs Virtual PC
>
> I probably should add that the Mac OS X version that is
> avalaible for download doesn't include support for the
> PowerPC swapping instructions (little-endian storing and
> loading instructions). Next release will.
>
> Pierre
>
> Le 6 juil. 04, à 02:29, address@hidden a écrit :
>
> > It was precisely because it has not yet been optimized that I was
> > curious of first impressions. The fact that it has been
> described as
> > "somewhat" slower is encouraging. No one expects it to be
> faster than
> > VPC out the gate, but to be in the same ballpark is quite an
> > 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
> >> speed as on my 800Mhz PIII desktop PC at work, which is to
> say that
> >> the emulated system seems somewhere around
> >> high-end-468/low-end-Pentium speed. However, it's important to
> >> remember that Virtual PC:
> >>
> >> * has been around for ages, and has seen lots of development and
> >> optimisation
> >> * uses a hand-written and heavily optimised x86->PPC translator
> >> * uses special PPC features like Altivec and little-endian mode to
> >> 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
> things though,
> >> so if you're debating whether or not to try it, by all
> means download
> >> it and give it a go.
> >>
> >> Thanks
> >> Leigh
> >>
> >>
> >>
> >> _______________________________________________
> >> Qemu-devel mailing list
> >> address@hidden
> >> http://lists.nongnu.org/mailman/listinfo/qemu-devel
> >>
> >
> >
> >
> > _______________________________________________
> > Qemu-devel mailing list
> > address@hidden
> > http://lists.nongnu.org/mailman/listinfo/qemu-devel
> >
>
>
>
> _______________________________________________
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- [Qemu-devel] [Patch] Mac OS X Port, Pierre d'Herbemont, 2004/07/02
- Re: [Qemu-devel] [Patch] Mac OS X Port, Jean-Michel POURE, 2004/07/03
- [Qemu-devel] Re: [Patch] Mac OS X Port, Christian Walther, 2004/07/04
- Re: [Qemu-devel] [Patch] Mac OS X Port, Leigh Dyer, 2004/07/04
- [Qemu-devel] Inquiry, speed comparison on OS X, QEMU vs Virtual PC, Daniel J . Guinan, 2004/07/05
- Re: [Qemu-devel] Inquiry, speed comparison on OS X, QEMU vs Virtual PC, Leigh Dyer, 2004/07/05
- Re: [Qemu-devel] Inquiry, speed comparison on OS X, QEMU vs Virtual PC, dguinan, 2004/07/05
- Re: [Qemu-devel] Inquiry, speed comparison on OS X, QEMU vs Virtual PC, Pierre d'Herbemont, 2004/07/09
- RE: [Qemu-devel] Inquiry, speed comparison on OS X, QEMU vs Virtual PC,
Natalia Portillo <=
- RE: [Qemu-devel] Inquiry, speed comparison on OS X, QEMU vs Virtual PC, Chad Page, 2004/07/09
- Re: [Qemu-devel] Inquiry, speed comparison on OS X, QEMU vs Virtual PC, Pierre d'Herbemont, 2004/07/10
- Re: [Qemu-devel] Inquiry, speed comparison on OS X, QEMU vs Virtual PC, J. Mayer, 2004/07/10
- Re: [Qemu-devel] Inquiry, speed comparison on OS X, QEMU vs Virtual PC, Pierre d'Herbemont, 2004/07/10
- Re: [Qemu-devel] Inquiry, speed comparison on OS X, QEMU vs Virtual PC, J. Mayer, 2004/07/10
- Re: [Qemu-devel] Inquiry, speed comparison on OS X, QEMU vs Virtual PC, Fabrice Bellard, 2004/07/10
- Re: [Qemu-devel] Inquiry, speed comparison on OS X, QEMU vs Virtual PC, Pierre d'Herbemont, 2004/07/10