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From: jeff@drexel.UUCP
Newsgroups: comp.unix.xenix
Subject: How is performance of ramdisk under SCO Xenix 2.2
Message-ID: <522@drexel.UUCP>
Date: Wed, 30-Sep-87 23:49:20 EDT
Article-I.D.: drexel.522
Posted: Wed Sep 30 23:49:20 1987
Date-Received: Sat, 3-Oct-87 02:43:55 EDT
Organization: Drexel University, Phila., Pa.
Lines: 19


  We just received our upgrade of SCO Xenix to version 2.2 today, and I
noticed in the manual that they now have a built in device driver for a 
ramdisk.  However, at the end of the manual page, they say that performance
can actually be WORSE, because the Xenix memory management can make better use
of the memory.
  Our configuration is a Tandy 3000HD, with a 40 Meg drive and 3.5 Meg of
ram.  The users (average 2-6) use either SCO Professional (spreadsheet) or
Open Systems (accounting package).  I was thinking about having them buy
4 sets of 256k chips (for about $100) to populate the rest of one of the
memory expansion boards, allocating about 1/2 Meg for the ramdisk, and then
copying some of the executable to the ramdisk.
  Would this give me better performance than increasing the memory and
just letting the OS have it all?  I would appreciate whatever opinions or
hard data people in the net have.

						Jeff White
						Drexel University - ECE Dept.
						rutgers!liberty!drexel!jeff