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Date: Mon, 25 Apr 2005 16:52:06 +0200
From: Kirill Ponomarew <krion@voodoo.oberon.net>
To: Scott Long <scottl@samsco.org>
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Subject: Re: FreeBSD 6 is coming too fast
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On Mon, Apr 25, 2005 at 08:44:34AM -0600, Scott Long wrote:
> >No, I'm not going to do it because of lack of knowledge, there are
> >people who have more experience with it than me.
> >
> Well, as I said in another email, switching to GCC 4 just because of
> dubious "25% faster" (faster at what?  compiling?  resulting generated
> code?  crashing?) claims in the changelog is not a terribly good
> reason =-)

25% faster to compile the code, not running it.

> It seems that every time GCC claims to get "faster", our
> buildworld times increase by 10%.  Maybe the generated code is
> better and faster, but it's no secret that gcc spends a lot more
> CPU cycles on code genreation and optimization than it did in the
> 2.x series.  Note also that the GCC 4.0 changelog mentions that
> the -O0 flag is faster; that's wonderful, but has no practical
> value to real people.

-Kirill