[Vm-dev] 64 bit VM, source anyone?

[Philippe Marschall]

2007/12/4, goran at krampe.se <goran at krampe.se>:
>
> Hi!
>
> Bert Freudenberg <bert at freudenbergs.de> wrote:
> > On Dec 4, 2007, at 18:56 , goran.krampe at msc.se wrote:
> >
> > > Right now I use the binary i386 VM from ftp.squeak.org/debian, it
> > > seems
> > > to work but looks slowish to me (tinyBenchmarks):
> > >
> > > 295 million bytecods/sec
> > > 9.5 million sends/sec
> > >
> > > And regardless of that it seems reasonable to at least use a 64 bit
> > > VM.
> > > :)
> >
> > For one, try to not think with your gut ;)
>
> I know - I just felt tempted to give 64 bits a shot. It was probably a
> bad decision. :)
>
> > Secondly, since there seems to be more interest lately, I'm sure
> > someone will provide answers. At least you are the first one posting
> > actual benchmark numbers - until now, I have only suspected a 64 bit
> > VM would actually be slower than a 32 bit VM. It's what my gut tells
> > me ;)
>
> I have absolutely no idea. Note though that the above numbers are for
> the binary 32 bit VM running on Debian AMD64.
> One can hope that the 64 bit VM is faster - but as you say, it might be
> more realistic to be slower.

On my machine, gentoo, Core 2 6600, 2.40GHz

64bit VM
509960159 bytecodes/sec; 14417913 sends/sec

32bit VM in emulation mode:
535845107 bytecodes/sec; 14728594 sends/sec

On the 32bit VM in emulation mode stuff like the cUrl plugin doesn't work.

Cheers
Philippe

> > - Bert -
>
> regards, Göran
>
> PS. The reason I said "slowish" is that... well, it is definitely not
> much faster than my Pentium-M laptop. But after talking on IRC it became
> clear that those numbers may very well be the expected.
>