From:	"A. Sinan Unur" <sinan DOT unur AT cornell DOT edu>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Q: Compile speed increase from 4MB to 8MB RAM
Date:	Tue, 17 Mar 1998 06:39:48 -0500
Organization:	Cornell University (http://www.cornell.edu/)
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David Vrabel wrote:
> 
> I currently have a 386sx20Mhz (Don't laugh I can't afford anything
> better) with 4MB of RAM.  I have configured the computer according to
> the instructions in the FAQ.  I am using DJGPP v2.01 and GCC 2.8.0.
> 
> The problem is the incredibly long comple times (about 20 minutes)
> particularly when using any part of the STL (ie. lots of templates).
> 
> How much difference would an extra 4MB of RAM make to the compile
> speed? (Actual figures would be nice if possible)

i can't give you exact figures, but i can only tell you that it would be
worth it. i would give smartdrv 1 MB cache, as opposed to the default 2
MB. (you don't mention which version of dos you are using and there are
performance differences between the various versions of smartdrv.) i
would also either not use emm386 at all, or at the very least, use it
with the noems option. totally off the top of my head, i think you
should see a two or three-fold improvement.

also, how fragmented is your hard disk and is there enough room on it?
if most of that time is spent with the heads moving all over the place,
you may not get too much of an improvement.
-- 
----------------------------------------------------------------------
A. Sinan Unur
Department of Policy Analysis and Management, College of Human Ecology,
Cornell University, Ithaca, NY 14853, USA

mailto:sinan DOT unur AT cornell DOT edu
http://www.people.cornell.edu/pages/asu1/

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