[Vm-dev] Re: [squeak-dev] VM performance discrepancy on Linux and Windows

[John M McIntosh]

Ian was/is aware of the magic to ensure the compiler makes a more  
efficient set of assembler instructions for non-generic intel CPU  
flavors.
I'll assume these were not applied to the 3.9-8 VM you are using

On Apr 9, 2008, at 1:38 PM, Yoshiki Ohshima wrote:

>  Hello,
>
>  I had some suspicous for a while but we did a little test with a
> computer that dual boot Windows XP and (Ubuntu) Linux to run
> tinyBenchmarks.  (The computer happens to be a 1.8GHz Pentium-M Dell
> laptop.)
>
> On Windows, 3.10.6 VM (pre-compiled one on the site) with
> etoys-dev.image, the result was:
>
>  311 million bytecodes/sec, 8.9 million sends/sec
>
> On Linux, 3.9-8 VM (pre-compiled one on the site) with etoys-dev.image
> the result was:
>
>  190 million bytecodes/ec, 5.7 million seonds/sec
>
>  Has any of you been experiencing similar gap?  Have anybody looked
> at the generated code, or has anybody done some experiment recently?
>
> -- Yoshiki
>

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John M. McIntosh <johnmci at smalltalkconsulting.com>
Corporate Smalltalk Consulting Ltd.  http://www.smalltalkconsulting.com
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