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.

On Wed, Apr 27, 2011 at 9:40 AM, Philippe Marschall <kustos@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