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3620 Memory Threshold
Date: Wed, 7 Sep 88 11:39 EDT
From: barmar@Think.COM (Barry Margolin)
Date: Wed, 7 Sep 88 09:32 EDT
From: JSP@ibm.com (J. Scott Penberthy)
Date: Tue, 6 Sep 88 17:58 PDT
From: Spock%SAMSON.CADR.DIALNET.SYMBOLICS.COM@yktvmh.watson.ibm.com (Spock)
What's the threshold? We have 1.5 megawords on ours at the moment. And
I wonder what the "threshold" on the MacIvory is?
I had similar problems (?) with the 3620. I now use 4 Megawords on our
3620, and it's faster than a 3640. I found that anything less than 2
MW results in horrible performance. I didn't notice any "significant"
improvement in performance once I passed 2.5Mw.
It's not just 3620's that need at least 2MW. I was using a 3640 with
1.5MW for a couple of months, and it was incredibly painful. When I
went back to 2MW it was fine. My understanding is that Symbolics
recommends at least 2MW for any system running Genera 7.2.
I don't know about Symbolics, but I would certainly recommend 2MW as the
minimum, and in my experience diminishing returns set in at about 2.5MW.
I use 3MW myself, and it's really not too much better than 2.5MW for
most of the things I do.