SBCL performance on OS X

I've been playing around for a while with close-to-out-of-memory
situations in Lisp. As part of this investigation, I wrote a very simple
program that just gobbles up memory until the Lisp process dies.

Running this program seems to show an incredible disparity between the
speed of SBCL on Linux, and on OS X. On Linux, the program dies after
less than a second, having allocated around 520MB. On my Powerbook the
same program takes 1 minute 13 seconds to allocate the same amount of
memory!

More details are at:
http://www.livejournal.com/users/abstractstuff/11286.html

I'd be very interested to hear any suggestions on what might be causing
this huge difference in performance. I'll be sure to follow-up with
anything else that I discover.

Thanks and best wishes,
Bill.
.

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