[self-interest] Performance?

[Michael Latta]

It looks like the compiler on the Mac is not as good as that for the 
Sparc.  On my 1Ghz powerbook I got the following:

47,058,823 bytecodes/sec and 17,247,597 sends/sec

which is a lot less than the 277Mhz sparc for bytecodes, but 
competitive on sends.  Still not what you want when comparing to 
hardware with 1/4 the clock rate.

Now I need to run the same thing on Squeak to compare on the same 
hardware.  Could you point me at the squeak expression?

Michael



On Jul 1, 2004, at 9:51 AM, Jecel Assumpcao Jr wrote:

> On Wednesday 30 June 2004 23:05, Michael Latta wrote:
>> The Squeak list has postings for bytecodes/sec and sends/sec.  Are
>> similar figures avaialble for self?  Is there a benchmark that can be
>> run to get similar figures?
>
> I did a quick and dirty translation of the two Squeak benchmarks to 
> Self
> and have attached it. One way to load it is to execute
>
>    'tbench.self' _RunScript
>
> and then get the result of
>
>    0 tinyBenchmarks
>
>> I would be interested in knowing the
>> relative performance of the two systems.
>
> Self for Linux 2.2 (which only includes the very poor non inlining
> compiler) gets
>
>    4,761,904 bytecodes/sec; 428,523 sends/sec
>
> (I added the commas because otherwise I find it very hard to read these
> numbers) and running it a few more times doesn't change things (no
> recompilation). This is a 600MHz Pentium III, for which Squeak 3.2
> shows these results
>
>    51,405,622 bytecodes/sec; 1,561,049 sends/sec
>
> For a 277MHz UltraSparc II, Self 4.2.1 yields
>
>    95,238,095 bytecodes/sec; 16,202,747 sends/sec
>
> while Squeak 3.6 says
>
>    14,121,800 bytecodes/sec; 678,849 sends/sec
>
> So unless there is something wrong in my translation, or the timing
> functions in either the Linux Self or the Sparc one, the lesson is
> clear: don't leave home without the optimizing compiler ;-)
>
>> Squeak seems to be running
>>> 1000 cycles / bytecode.  This seems quite high compared to the
>> techniques used in the Self compiler, even with GC and compiler
>> overhead.
>
> People have been getting results of 200Mbytecodes/sec or more with
> Squeak on 3GHz machines, which would be 15 clocks per bytecode. The
> Self on Ultra II numbers show this could be improved around 5 times.
>
> -- Jecel
>
>
> Yahoo! Groups Links
>
>
>
>
> <tbench.self>