[squeak-dev] Re: jitter

Andreas Raab andreas.raab at gmx.de
Tue Apr 1 16:34:04 UTC 2008


Jecel Assumpcao Jr wrote:
> And since it was finished, you can download it (get Squeak 2.3) and run
> some benchmarks (in Linux machines, at least). Here are the numbers on
> this machine (3GHz Pentium 4):
> 
> 2.3 image and normal 2.3 VM - 62,500,000 bytecodes/sec; 4,591,325
> sends/sec
> 2.3 image and Jitter3 VM - 100,000,000 bytecodes/sec; 10,494,459
> sends/sec
> 3.9 image and 3.7 VM - 160,602,258 bytecodes/sec; 7,292,693 sends/sec
> 
> The Jitter3 numbers varied wildly, but even the more stable numbers for
> the normal 2.3 VM are very suspect. The problem is that the old image
> didn't expect such a fast machine and doesn't seem to loop enough times.

Easy. Just copy and paste #tinyBenchmarks, #benchFib, and #benchmark to 
Integer. I did this in Squeak1.1.image (this was the baseline of my 
benchmark comparison) so it should work fine with 2.3.

Cheers,
   - Andreas



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