[Vm-dev] Spur performance report...

[Eliot Miranda]

On Wed, Apr 23, 2014 at 5:00 AM, Blake McBride <blake at mcbride.name> wrote:

>
> Let's see the timing with the two done in reverse order.  OS cache could
> account for some of that difference.
>

McStalker.image$ time oscfvm CogVMMaker.image BuildSqueak45Image.st
real    2m31.703s
user    2m10.281s
sys     0m4.020s
McStalker.image$ time spurcfvm CogVMMaker-spur.image BuildSqueak45Image.st
exactFitCompact fits: 771 misfits: 354821
real    1m35.447s
user    1m15.879s
sys     0m6.047s


Looks much the same.  The Spur image is larger by 15% which could account
for some of the sys difference.

Blake McBride
>
>
>
> On Tue, Apr 22, 2014 at 5:05 PM, Eliot Miranda <eliot.miranda at gmail.com>wrote:
>
>>
>> Hi All,
>>
>>     I should write a blog post on this, but I can't wait...
>>
>> In recent days I've written a script to build a Cog VMMaker image from
>> Squeak 4.5.  See http://www.squeakvm.org/svn/squeak/branches/Cog/image.
>>  This has allowed me to run the current Cog VM against Spur side-to-side.
>>
>> To build a Cog VMMaker image on my 2.2GHz Intel Core i7 MacBook Pro using
>> the current Cog VM takes about 2 and a half minutes:
>>
>> McStalker.image$ time oscfvm CogVMMaker.image BuildSqueak45Image.st
>> real    2m30.671s
>> user    2m15.683s
>> sys     0m5.283s
>>
>> To build the equivalent image using Spur takes about 1 and a half minutes:
>> McStalker.image$ time spurcfvm CogVMMaker-spur.image
>> BuildSqueak45Image.st
>> real    1m34.943s
>> user    1m23.666s
>> sys     0m6.810s
>>
>> Comparing:
>>
>> 94.943 - 150.671 / 150.671 * 100 -36.99
>> 83.666 - 135.681 / 135.681 * 100 -38.34
>> 150.671 / 94.943 1.59
>> 135.681 / 83.666 1.62
>>
>> that's about a -37% speedup, or 1.6x faster.
>> --
>> best,
>> Eliot
>>
>>
>
>


-- 
best,
Eliot
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