[Vm-dev] Re: [Pharo-project] new Cog VMs uploaded

[Eliot Miranda]

Philippe,

    can you please profile before and after?  This could very well be to do
with the additional cost of shallowCopy for contexts, but it is inevitable
that a correct implementation is going to be more expensive than the simple
block-copy.  The new implementation can be optimized, but we need to profile
first to be sure we're tilting at the relevant windmill.

AdvThanksance
Eliot

On Wed, Apr 27, 2011 at 9:40 AM, Philippe Marschall <kustos at gmx.net> wrote:

> On 26.04.2011 23:01, Eliot Miranda wrote:
> > ...to http://www.mirandabanda.org/files/Cog/VM/VM.r2379/.  These fix
> > shallowCopy and copyFrom: for contexts and (I hope) fix the linux Locale
> > plugin.
>
> I'm seeing quite a drastic performance degradation in the last two Cog
> releases for Seaside. r2361 and r2370 would yield about 4300 to 4400
> "points" for /tests/functional/WAPerformanceFunctionalTest. r2378 and
> r2380 are down to about 2600 to 2700. That's almost a third slower.
>
> Cheers
> Philippe
>
>
>
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