From:	Vic <tudor AT cam DOT org>
Newsgroups:	comp.os.msdos.djgpp
Subject:	PGCC performance
Date:	Fri, 27 Feb 1998 23:52:24 +0200
Organization:	Communications Accessibles Montreal, Quebec Canada
Lines:	31
Message-ID:	<34F73598.25E7@cam.org>
NNTP-Posting-Host:	dialup-696.hip.cam.org
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

There have been some questions about PGCC, if it's worth it etc, so I'll
just post my findings. Remember a while ago the DJGPP vs watcom wars?
Thomas Djafari posted a little test program  to see the performance of
the compiler. The test was a DCT jpeg like compressor working on a 2048
by 2048 (pretty big) array.
The initial data were:

Watcom 11.0 beta Pentium mode

25.3800 Seconds, 3037 millions clocks
18.1800 Seconds, 2179 millions clocks

DJGPP v 2.7.2.1

35.3846 Seconds, 4234 millions clocks
26.4835 Seconds, 3170 millions clocks

what I found (P133 16 megs RAM):

DJGPP PGCC 101

23.3516 Seconds, 3095 millions clocks
19.3407 Seconds, 2566 millions clocks

so, as you can see, PGCC IS worth it. It almost tops watcom pentium
performance and is a lot better than the normal GCC (Of course this
really depends on your situation, but it shows a bit the improvements
you might be looking at. here it's almost 30%)

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