delorie.com/archives/browse.cgi   search  
Mail Archives: djgpp/1997/09/28/19:17:50

From: Vic <tudor AT cam DOT org>
Newsgroups: comp.os.msdos.djgpp
Subject: BNU 2.8.1 SLOWER ???
Date: Sun, 28 Sep 1997 10:10:40 -0400
Organization: Communications Accessibles Montreal, Quebec Canada
Lines: 20
Message-ID: <342E6560.600A@cam.org>
NNTP-Posting-Host: dynppp-155.hip.cam.org
Mime-Version: 1.0
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

hello. Do you remember Thomas Djafari's test? It was a DCT compressor to
see the performance of different compilers. anyways, today I recompiled
the thingie and it was 2 times slower! After playing around with the
flags for a while, I realised it must be something else. The only thing
I changed were the binutils. So I do a test:
with -O6 -ffast-math -mpentium -fomit-frame-pointer -funroll-loops
I get:
With BNU 2.7:
approx. 2939 million clocks compressing
approx. 2561 million clocks decompressing
With BNU 2.8.1 I get
approx. 3326 million clocks compressing
approx. 2965 million clocks decompressing
Why is this slower when using BNU2.8.1?? what are the new things
installed in it? 
TIA,
-- 
--> http://www.cam.org/~tudor <--
Go ahead and build another Messiah
We dig another grave...

- Raw text -


  webmaster     delorie software   privacy  
  Copyright © 2019   by DJ Delorie     Updated Jul 2019