From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.gentoo.org ([140.105.134.102] helo=robin.gentoo.org) by nuthatch.gentoo.org with esmtp (Exim 4.62) (envelope-from ) id 1HapKD-0008Bu-8W for garchives@archives.gentoo.org; Mon, 09 Apr 2007 08:34:09 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.14.0/8.14.0) with SMTP id l398Wt4x015478; Mon, 9 Apr 2007 08:32:55 GMT Received: from desiato.digimed.co.uk (82-69-83-178.dsl.in-addr.zen.co.uk [82.69.83.178]) by robin.gentoo.org (8.14.0/8.14.0) with ESMTP id l398SoJY010864 for ; Mon, 9 Apr 2007 08:28:51 GMT Received: from krikkit.digimed.co.uk (krikkit.digimed.co.uk [192.168.1.3]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by desiato.digimed.co.uk (Postfix) with ESMTP id 1CE2DDE02F for ; Mon, 9 Apr 2007 09:28:48 +0100 (BST) Date: Mon, 9 Apr 2007 09:28:41 +0100 From: Neil Bothwick To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] CFLAGS "...-O3 -pipe" vs "...O2 " Message-ID: <20070409092841.5d075855@krikkit.digimed.co.uk> In-Reply-To: References: <739325.15429.qm@web31706.mail.mud.yahoo.com> Organization: Digital Media Production X-Mailer: Claws Mail 2.8.1cvs91 (GTK+ 2.10.11; powerpc-unknown-linux-gnu) X-GPG-Fingerprint: 7260 0F33 97EC 2F1E 7667 FE37 BA6E 1A97 4375 1903 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@gentoo.org Reply-to: gentoo-user@lists.gentoo.org Mime-Version: 1.0 Content-Type: multipart/signed; boundary=Sig_L3v3eQIboCogDmFJoH_SE04; protocol="application/pgp-signature"; micalg=PGP-SHA1 X-Archives-Salt: 306a6a27-4fa2-4c95-8c19-91ddfe14ec77 X-Archives-Hash: a3c4c21a3564bfd6e02a73166cacc34b --Sig_L3v3eQIboCogDmFJoH_SE04 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Hello Andrey Gerasimenko, > Ideally you should measure compile times for large projects like Open =20 > Office and find out what works best on your system. I would start with > 1 thread -O2 and -pipe. That would be an incredible waste of time because the OOo build replaces any -O? CFLAG with -O2. If you want to test this, use a more representative ebuild, preferably for a package you can time with a watch rather than a calendar. --=20 Neil Bothwick Accept that some days you're the pigeon, and some days you're the statue. --Sig_L3v3eQIboCogDmFJoH_SE04 Content-Type: application/pgp-signature; name=signature.asc Content-Disposition: attachment; filename=signature.asc -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.3 (GNU/Linux) iD8DBQFGGfk/um4al0N1GQMRAojAAJ9nTa+RNnjU82pMPRQJYf9flP/jEgCdGCIU rQQQRbHAwwznANk26xyyawM= =LAf/ -----END PGP SIGNATURE----- --Sig_L3v3eQIboCogDmFJoH_SE04-- -- gentoo-user@gentoo.org mailing list