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Message-ID: <36583004.EBC1AE13@bigfoot.com>
Date: Sun, 22 Nov 1998 10:38:44 -0500
From: Jonathan Mark Brooks <jmbrooks AT bigfoot DOT com>
Organization: Law Offices of J. Mark Brooks
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To: Michael Kunze <mkunze AT ivw DOT de>
CC: beastium-list AT desk DOT nl
Subject: Re: gzip SLOWER with pgcc 1.1?
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Hmmmm.  If any of the developers are on the list, I would be
interested
in the answer to this as well, as I have a P2, and I tend to compile
- -O6 -mpentiumpro by default on all my apps that are C++ source code.

Mind you, this is for c++ source code.  There is no -O6 for c source
that I'm aware of.  My impression was that the max was -O3 for c
source.

Would having -O6 to compile c source have the effect of turning off
optimization since there isn't an -O6 level?  Could this be Michael's
problem?

Michael Kunze wrote:
> 
> Hi all,
> 
> i'm encountering a very funny problem with an optimized gzip 1.2.4.
When
> i zgrep through a series of gz-files, my optimized gzip
(-mpentiumpro
> -march=pentiumpro -O6) is 20 secs SLOWER (-25%) than my stock SuSE
gzip.
> I have indeed isolated the problem being gzip, not grep. I compiled
the
> new gzip from SuSE's source rpm, just modifying the CFLAGS-line  as
> stated above. On my machine, i use the pgcc 1.1 precompiled compiler
> binaries, not the whole egcs stuff.
> 
> Has anybody seen a similar effect. What could  cause it?  Please
respond
> directly to my email address, as i'm not on the list.
> 
> Greetings
> Michael

- -- 
****************************************************************
* J. Mark Brooks                                               *
* webmaster AT jmbrooks DOT net                                       *
* http://jmbrooks.net                                          *
*                                                              *
* "This is a Court of Law young man, not a court of justice."  *
* --Oliver Wendell Holmes                                      *
*                                                              *
****************************************************************
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