I've always had good luck by doubling the current size of things when 
they hit capacity (lacking any more knowledge about what's going on 
anyhow).  If you do shrinking, I do it when the thing falls to around 
25% utilization and then shrink it by half.

Just my heuristic but I find it tends to find something close to the 
appropriate size pretty fast.

On Thursday, January 16, 2003, at 05:50  AM, Anthony Hannan wrote:
>
> It's probably because I copy the stack when it grows, but only grow it
> by a small fixed amount (1000 slots ~ 150 frames) each time, causing 
> many
> copies of large stacks.  Maybe I should grow it by a factor of the
> current size, so it will be copied less and less.  This would not be
> hard to have as VM parameters, maybe a growFactor and a growConstant.
>
> Cheers,
> Anthony
>