Hi,

Chris King wrote:
 > Did you look at Gc?  It's not a hard limit but periodically checking
 > (quick_stat ()).heap_words will give you a rough estimate of how much
 > memory your program is using (not exact since it doesn't count
 > code/stack/etc.).

thanks for the suggestion. For some reason I thought that monitoring 
memory usage by calling the Gc functions often tends to be expensive.

But someone suggested to use Gc.create_alarm, and this works fine.

Thanks,

	Alexander