Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!apple!usc!randvax!leverich
From: leverich@randvax.UUCP (Brian Leverich)
Newsgroups: comp.lang.scheme
Subject: BUG IN EXPANDED MEMORY TI PC-SCHEME?
Keywords: Help!
Message-ID: <2102@randvax.UUCP>
Date: 16 Jun 89 21:43:25 GMT
Reply-To: leverich@rand.org
Organization: RAND Corp., Santa Monica, CA
Lines: 21


On "long" simulation runs (20+ minutes on a 12mHz 286 with LIM 4.0 EMS...)
using PCSEXP, the _expanded memory_ version of Texas Instrument's
PC-Scheme, I apparently run low on space, the gc starts thrashing around,
and finally I get a Scheme reset because the system is out of space.

Problem is, I can't find anywhere near enough current structures to
fill memory.  Moreover, (freesp) returns 400K + of memory, then if I
invoke (freesp) again (or anything else...) it triggers another gc
and sometimes another Scheme reset.  I don't have the problem when I
use PCSEXT and jumper my expanded memory to act like extended.  Looks
like (freesp) can see a big chunk of free space, but the gc isn't
adding it to the free list.

Anyone else had this problem with PCSEXP?  Anyone have any workaround
suggestions?  Tnx.  -B
-- 
  "Simulate it in ROSS"
  Brian Leverich                       | U.S. Snail: 1700 Main St.
  ARPAnet: leverich@rand.org           |             Santa Monica, CA 90406
  UUCP:    decvax!randvax!leverich     | Ma Bell:    (213) 393-0411 X7769