Subject: Re: Python and Lisp Test
From: (Rob Warnock)
Date: Fri, 30 Dec 2005 03:54:02 -0600
Newsgroups: comp.lang.lisp
Message-ID: <>
Marcin 'Qrczak' Kowalczyk  <> wrote:
| My GC has two heaps, young and old. Minor GC moves live data from the
| young heap into the old heap. Major GC moves live data from both heaps
| into the newly allocated old heap. The minor heap has 64kB by default.

That sounds really small to me. The literature I've read on generational
GCs with a "nursery" [e.g., Ungar, Appel, or especially Wilson et al
<>] making
the nursery [your young heap] be roughly the size of the CPU's secondary
cache [but not larger].

Also, be sure you keep the nursery in a fixed location [if you're not
already doing that], since the whole point of that approach is to keep
the memory in the nursery "hot" in the cache.


Rob Warnock			<>
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