[squeak-dev] Re: [Vm-dev] Spur performance report...
blake at mcbride.name
Wed Apr 23 12:00:49 UTC 2014
Let's see the timing with the two done in reverse order. OS cache could
account for some of that difference.
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
> 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.
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