From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1Qjt4V-0007ka-JS for garchives@archives.gentoo.org; Thu, 21 Jul 2011 13:13:47 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 7B7D721C3E9; Thu, 21 Jul 2011 13:13:17 +0000 (UTC) Received: from outbound.icp-osb-irony-out8.iinet.net.au (outbound.icp-osb-irony-out8.iinet.net.au [203.59.1.134]) by pigeon.gentoo.org (Postfix) with ESMTP id EF8D121C3D6 for ; Thu, 21 Jul 2011 13:10:58 +0000 (UTC) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Ah0HAI0kKE58qXGq/2dsb2JhbABUhEqUFI8Md4h8q1KRBIErhASBDwSHU5AiHotF X-IronPort-AV: E=Sophos;i="4.67,240,1309708800"; d="scan'208";a="129335122" Received: from unknown (HELO moriah.localdomain) ([124.169.113.170]) by outbound.icp-osb-irony-out8.iinet.net.au with ESMTP; 21 Jul 2011 21:10:57 +0800 Received: from localhost (localhost [127.0.0.1]) by moriah.localdomain (Postfix) with ESMTP id C5B7BF4874 for ; Thu, 21 Jul 2011 21:10:56 +0800 (WST) X-Virus-Scanned: amavisd-new at localdomain Received: from moriah.localdomain ([127.0.0.1]) by localhost (moriah.lan.localdomain [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 5yj9aRjnbE-r for ; Thu, 21 Jul 2011 21:10:53 +0800 (WST) Received: from [127.0.0.1] (localhost [127.0.0.1]) by moriah.localdomain (Postfix) with ESMTP id F24C9F485B for ; Thu, 21 Jul 2011 21:10:52 +0800 (WST) Subject: Re: [gentoo-user] New computer and Gentoo From: William Kenworthy To: gentoo-user@lists.gentoo.org In-Reply-To: <4E27EF91.4060408@binarywings.net> References: <4E27EF91.4060408@binarywings.net> Content-Type: text/plain; charset="UTF-8" Date: Thu, 21 Jul 2011 21:10:52 +0800 Message-ID: <1311253852.29724.19.camel@moriah> Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org Mime-Version: 1.0 X-Mailer: Evolution 2.32.2 Content-Transfer-Encoding: 7bit X-Archives-Salt: X-Archives-Hash: 051072e5bcb5fd8e5df6d152c8da22b3 On Thu, 2011-07-21 at 11:21 +0200, Florian Philipp wrote: > Am 21.07.2011 10:57, schrieb Pandu Poluan: > > -original message- > > Subject: Re: [gentoo-user] New computer and Gentoo > > From: Bill Kenworthy > > Date: 2011-07-21 12:54 > > > >> On Thu, 2011-07-21 at 06:26 +0100, Mick wrote: > [...] > >> Ive just stumbled on something weird with march=native: > >> > > I'd like to see a reference for this claim. -march=native doesn't do > more than set -march=core2 and some other optimizations for cache size > etc. This should be no more troublesome than mixing code compiled with unfortunately this is now my main machine so I cant fiddle too much with it! It would mean going back to the E4600 and comparing march=prescott, march=native then fitting the E6600 and checking march=native and march=core2. What I cant find is a reference to how it works out what native is? - lookup-table, checking the flags in /proc/cpuinfo or what? Ive now rolled back (that is recompiled) the majority of packages so now I can keep working while it does an emerge -e world. I would have thought the two intel processors would be close enough that it would be just a performance hit and not segfaults, but the machine is now working reliably so thats proof enough for me. What I am having difficulty with is that packages compiled with native should have been a closer match to the cpu so why was it those packages (asterisk, glibc and some random others cause problems. BillK