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 4.60) (envelope-from ) id 1Gh3Hv-0002Ja-4N for garchives@archives.gentoo.org; Mon, 06 Nov 2006 12:09:15 +0000 Received: from robin.gentoo.org (localhost [127.0.0.1]) by robin.gentoo.org (8.13.8/8.13.8) with SMTP id kA6C741K007824; Mon, 6 Nov 2006 12:07:04 GMT Received: from hades.rz.tu-clausthal.de (hades.rz.tu-clausthal.de [139.174.2.20]) by robin.gentoo.org (8.13.8/8.13.8) with ESMTP id kA6C73Cl021800 for ; Mon, 6 Nov 2006 12:07:03 GMT Received: from hades.rz.tu-clausthal.de (localhost [127.0.0.1]) by localhost (Postfix) with SMTP id BE0681F51DA for ; Mon, 6 Nov 2006 13:05:32 +0100 (CET) Received: from tu-clausthal.de (poseidon [139.174.2.21]) by hades.rz.tu-clausthal.de (Postfix) with ESMTP id 91E801F51CC for ; Mon, 6 Nov 2006 13:05:32 +0100 (CET) Received: from energy.heim10.tu-clausthal.de ([139.174.241.94] verified) by tu-clausthal.de (CommuniGate Pro SMTP 5.1.1) with ESMTPS id 17987179 for gentoo-amd64@lists.gentoo.org; Mon, 06 Nov 2006 13:05:32 +0100 From: "Hemmann, Volker Armin" To: gentoo-amd64@lists.gentoo.org Subject: Re: [gentoo-amd64] Re: Unexpected side effect of GCC 4 Date: Mon, 6 Nov 2006 13:05:31 +0100 User-Agent: KMail/1.9.5 References: <200611050845.42865.prh@gotadsl.co.uk> <200611061147.37428.volker.armin.hemmann@tu-clausthal.de> <200611061148.52817.prh@gotadsl.co.uk> In-Reply-To: <200611061148.52817.prh@gotadsl.co.uk> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-amd64@gentoo.org Reply-to: gentoo-amd64@lists.gentoo.org MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200611061305.31763.volker.armin.hemmann@tu-clausthal.de> X-Virus-Scanned: by PureMessage V4.7 at tu-clausthal.de X-Archives-Salt: 2a9a24bd-71c2-4e63-989b-b38b153c1641 X-Archives-Hash: 093cf82acdb1cf08c2ca6b745474dbe6 On Monday 06 November 2006 12:48, Peter Humphrey wrote: > On Monday 06 November 2006 10:47, Hemmann, Volker Armin wrote: > > Set Portage_NICENESS to 19, MAKEOPTS ot -jX with X maximum number of > > cores and activate ccache with at least 4GB and you don't need tempfs to > > install KDE (all of it), in less than 10h. > > Are you implying that setting X > number of cores will slow it down? I > have -j5 with two single CPUs, and KDE (part of it) takes far longer than > that. lets ask the other way round. Why should it speed up anything to have X>number of cores? Instead of a single thread per core, compiling happily, you have two or more competing for one core and regularly kick out each others data from the cache. -- gentoo-amd64@gentoo.org mailing list