On Sun, 19 Oct 2008, Bulat Ziganshin wrote:
Hello Philippa,
Sunday, October 19, 2008, 3:25:26 PM, you wrote:
... that, like everything else, should be multiplied by 2-3 to account GC effect
Unless I'm much mistaken, that isn't the case when you're looking at the minimum heap size because the GC'll run more frequently when you hit the max heap size supported anyway, no?
what you mean? max heap size is 2gb probably. it may be configured on cmdline and if you will enable say 200 mb heap and your program use only 180 mb - it will run successfully, using only 200 mb of memory. drawback, of course, is that it may become 10x slower
Ah, so you can't trust GHC to pick a max heap size within what the OS actually has available? That does make the RTS option rather necessary. But well worth knowing if you're trying to make something run in a known footprint. -- flippa@flippac.org The task of the academic is not to scale great intellectual mountains, but to flatten them.