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List:       gentoo-ppc-user
Subject:    Re: [gentoo-ppc-user] PPC cflags
From:       "Cameron Blackwood" <korg () darkqueen ! org>
Date:       2005-02-22 0:44:13
Message-ID: 20050222004413.68E9152651 () firewall ! darkqueen ! org
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Erik Zeek writes:
  |
  | You might check out:
  | http://gentoo-wiki.com/Safe_Cflags
  | 
  | You could start your own page, and start collecting the data.

Augh! If only this was 'offical' and/or linked into the install docs.
Oh well, color me 'too stupid to find this' :)

  | 
  | >
  | > A while ago I was md5sum'ing some iso images and I noticed my G5
  | > was _WAY_ slower than my G3 laptop and it was because Id dropped
  | > the mcpu=3DG5 setting from my G5 CFLAGS. I realise that md5sum'ing is a
  | > special case, but small changes can make a massive change.

Actually, I recompiled our project here on my G5 with the -mcpu=G5
flag and got a *2 in performance, so Im thinking that ppc with no cpu
flag doesnt use most of the cpu features ;) ;).


cheers,
cam

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