Re: GC stall in luaC_separateudata

[Niklas Frykholm <niklas@...>]

> > I am seeing a GC stall of about 8 ms in luaC_separateudata(). After 
> > looking at the code and reading chapter 31 of Programming in Lua, I 
> > think that there simply are too many userdata objects in my lua state.
>
> Most of these objects come from arithmetic operations on vectors (which 
> are represented as userdata objects), so my best idea right now is to 
> change that to a table representation, which would mean fewer userdata 
> objects (possibly at the cost of performance).

Good news. I have changed all my userdata objects to tables and this got 
 rid of the stall in luaC_separateudata() completely. Also, the overall 
performance seems to be about the same. As far as I can tell, the table 
representation is not much more expensive than the userdata representation

// Niklas