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From: Joe Buck <jbuck@synopsys.COM>
To: torvalds@transmeta.com (Linus Torvalds)
Cc: jbuck@synopsys.com (Joe Buck), apl@alum.mit.edu, gcc@gcc.gnu.org
Subject: Re: compiling linux kernels with GCC 3.0
Date: Wed, 10 Oct 2001 15:23:00 -0000	[thread overview]
Message-ID: <200110102222.PAA08822@atrus.synopsys.com> (raw)
In-Reply-To: <Pine.LNX.4.33.0110101120280.2531-100000@penguin.transmeta.com>

I wrote:
> > Since we've had some issues with performance regressions, but also have
> > some performance improvements especially for x86

Linus writes:
> Has this actually been verified by _anybody_?

Yes, but the net performance improvements seem to be slight.  See
Andreas Jaeger's SPECint 2000 runs.  See

http:/www.suse.de/~aj/SPEC/

for a discussion, test conditions, caveats, etc.  To jump straight to
the significant results:

http://www.suse.de/~aj/SPEC/reference/gcc-2.95.3.SuSE/CINT2000.048.html
http://www.suse.de/~aj/SPEC/reference/gcc-3.0/CINT2000.186.html
http://www.suse.de/~aj/SPEC/reference/gcc-3.0.1/CINT2000.185.html

The trend is right, 2.95.3 < 3.0 < 3.0.1.

The test platform is an AMD Athlon 1.133Ghz box.

  reply	other threads:[~2001-10-10 15:23 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2001-10-10  5:37 Alan Lehotsky
2001-10-10  7:22 ` Florian Weimer
2001-10-10  9:04   ` Josh McKinney
2001-10-10  9:26 ` Linus Torvalds
2001-10-10 11:09   ` Joe Buck
2001-10-10 11:23     ` Linus Torvalds
2001-10-10 15:23       ` Joe Buck [this message]
2001-10-10 16:19         ` Paolo Carlini
2001-10-10 16:58           ` Richard Henderson
2001-10-10 17:09             ` Paolo Carlini
2001-10-10 17:12               ` Richard Henderson
2001-10-10 19:03               ` Tim Prince
2001-10-10 15:39       ` Matthew Woodcraft
2001-10-10 11:40   ` Mark Mitchell
2001-10-10 14:01     ` Paolo Carlini
2001-10-10 14:15       ` Mark Mitchell
2001-10-10 14:54         ` Paolo Carlini
2001-10-10 15:57       ` Joe Buck
2001-10-10 11:23 Reichelt

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