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 4.54) id 1Epquu-00028Y-7d for garchives@archives.gentoo.org; Fri, 23 Dec 2005 17:41:20 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.13.5/8.13.5) with SMTP id jBNHe8ek012719; Fri, 23 Dec 2005 17:40:08 GMT Received: from smtp50.wxs.nl (smtp50-real.wxs.nl [195.121.247.15]) by robin.gentoo.org (8.13.5/8.13.5) with ESMTP id jBNHZh7Y027871 for ; Fri, 23 Dec 2005 17:35:44 GMT Received: from pavlvs2.devrieze.net (ip5457f303.direct-adsl.nl [84.87.243.3]) by smtp50.wxs.nl (8.12.10/8.12.10) with ESMTP id jBNHZgp5027541 for ; Fri, 23 Dec 2005 18:35:43 +0100 Received: from hex.local.devrieze.net (hex.local.devrieze.net [192.168.1.7]) by pavlvs2.devrieze.net (Postfix) with ESMTP id CE0381004C for ; Fri, 23 Dec 2005 18:35:42 +0100 (CET) From: Paul de Vrieze To: gentoo-dev@lists.gentoo.org Subject: Re: [gentoo-dev] Optimizing performance Date: Fri, 23 Dec 2005 18:35:42 +0100 User-Agent: KMail/1.8.92 References: <1134650885.4634.57.camel@localhost> <200512151038.16119.electronerd@electronerdia.net> In-Reply-To: <200512151038.16119.electronerd@electronerdia.net> X-Face: #Lb+'V@sGJ;ptgo5}V"W+5OCoo{LZv;bh,s,`WKLi/J)ed1_$0;6X<=?utf-8?q?700LVV/=3BLqPhiDP=5E=0A=09=27f=5Dfnv?=@%6M8\'HR1t=aFx;ePfp{ZQoBe+e)JOQ8T5*(_;mHY+cltLGq<;@$Y,=?utf-8?q?O=5C=24=0A=09Tm=23G6M?=,g![Q62J{na*S9d;R[^8pc%u\aiLqU@`kJtYl"^6pxdW Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-dev@gentoo.org Reply-to: gentoo-dev@lists.gentoo.org MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart8607949.PfhsFOSLLK"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200512231835.42635.pauldv@gentoo.org> X-Archives-Salt: 50857356-b16b-4920-9796-390b921af775 X-Archives-Hash: 52f3a7f0fb69193de3f4be4c471fad9f --nextPart8607949.PfhsFOSLLK Content-Type: text/plain; charset="iso-8859-6" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Thursday 15 December 2005 19:38, John Myers wrote: > On Thursday 15 December 2005 04:48, Patrick Lauer wrote: > > Hi all, > > > > I was wondering if there are any sane ways to optimize the performance > > of a Gentoo system. > > Overoptimization (the well known "-O9 -fomgomg" CFLAGS etc.) tends to > > make things unstable, which is of course not what we want. The "easy" > > way out would be buying faster hardware, but that is usually not an > > option ;-) > > > > So ... what can be done to get the stable maximum out of your hardware? > > This should be obvious, but don't USE=3Ddebug globally. Last time I did t= hat, > it made my Athlon64 3400+ with 1G of RAM feel like the 300MHz PII with 19= 2M > of RAM I have. Just to add. This is not so much related to debugging information in the=20 library files (what gdb can use). That information never makes it from disk= =20 so is not that much of a speed issue (esp. if it is split out). It is howev= er=20 related to the debug use flag enabling various kinds of debugging checks,=20 output and whatnot in software. Those tests are useful for debugging, but i= n=20 the case of tests are normally disabled because of the performance hit they= =20 carry. Paul =2D-=20 Paul de Vrieze Gentoo Developer Mail: pauldv@gentoo.org Homepage: http://www.devrieze.net --nextPart8607949.PfhsFOSLLK Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2-ecc0.1.6 (GNU/Linux) iD8DBQBDrDVubKx5DBjWFdsRAmaTAKCxXAxpM6y3c+i58bOaT28TvfqHzgCfaIuK B647oz589VD1hExK0U386v0= =BF4z -----END PGP SIGNATURE----- --nextPart8607949.PfhsFOSLLK-- -- gentoo-dev@gentoo.org mailing list