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Date: Wed, 10 Sep 1997 10:32:57 -0500
From: Dan Nelson <dnelson@emsphone.com>
To: angasprk@dove.net.au
Cc: freebsd-questions@FreeBSD.ORG
Subject: Re: FreeBSD compatability with SCO
References: <34163242.4C16@dove.net.au>
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In the last episode (Sep 10), Peter Whybrow said:
> I have a DG AViion with DGUX running progress databases and I am
> considering changing to FreeBSD on a Pentium Pro 200.  How good is
> the SCO emulation on FreeBSD (Progress does not run on FreeBSD but is
> available for SCO).
> 
> Also what performance gain should I expect from running this on the
> Pentium Pro 200 (similar memory configuration as the DG) (DG Aviion
> is a 4635 model twin motorola processors running at 33mhz with 64 MB
> memory)

We're running an app written in MicroFocus COBOL under SCO emulation on
a couple FreeBSD boxes here.  It's the Code-1 address correction
package; ~200k lines of code.  Compiles and executes without a hitch,
although we do have an SCO box in the corner, just in case we need tech
support from the vendor.

You may want to get the 2-user demo version of SCO, and install the
software on that machine, then copy the installed software over to the
FreeBSD box.  I had to copy over /usr/lib/lang/, usr/lib/terminfo/, and
some of the /dev/ directory as well. (Put the files in /compat/ibcs2,
so they don't confuse regular FreeBSD programs).

Performance-wise, you're going from 66mhz to 200mhz.  Expect around a
3-6x speed increase, depending on the processor type you started out
with ('030/'040/'060), and your workload (CPU or I/O bound).

	-Dan Nelson
	dnelson@emsphone.com