Re: GC Optimisation question for Lua4

["Adam D. Moss" <adam@...>]

Joshua Jensen wrote:
> > 	The game I`m working on has a very high table/node 
> > count.  I'm talking around 10 000 hash tables and 120 000 
> > Nodes.  This takes a relatively long time to traverse and 
> > causes the frame rate to drop significantly when when doing a 
> > gc cylce ( it takes around 33ms to do the complete gc ).
>
> luarc, a reference counted version of Lua 5.02, is pretty efficient.  The
> mark/sweep collector still has to run for cyclic tables, but for everything
> else, it's better than any other solution I've played with.  As an example,
> the mark/sweep pass in Amped 1 took over 60 milliseconds.  Given the number
> of tables/strings/collectable data generated per frame, luarc would take a
> fraction of a millisecond.
>
> luarc is available at http://luaplus.org/.

I do think that more people should try luarc.  IMO it needs
more generous testing in peoples' projects. :)  I think it needs
more testing for selfish reasons: I'm hoping that someone else
can reproduce the problems I have with it, since it seems to
perform quite excellently for tiny tests but has stability
problems in my larger environment.  More eyes couldn't hurt!

Luarc seems like a nice approach, from an experimental point
of view.  I enjoy seeing the various official and unofficial
Lua offshoots and experiments, it makes Lua feel like a very
'alive' language.

--Adam
--
Adam D. Moss   . ,,^^   adam@gimp.org   http://www.foxbox.org/   co:3