From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934065Ab2LIM3M (ORCPT ); Sun, 9 Dec 2012 07:29:12 -0500 Received: from mail.skyhub.de ([78.46.96.112]:43526 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934052Ab2LIM3L (ORCPT ); Sun, 9 Dec 2012 07:29:11 -0500 Date: Sun, 9 Dec 2012 13:29:07 +0100 From: Borislav Petkov To: John Cc: "linux-kernel@vger.kernel.org" Subject: Re: [PATCH] Expand CPU compiler options Message-ID: <20121209122907.GD24106@liondog.tnic> Mail-Followup-To: Borislav Petkov , John , "linux-kernel@vger.kernel.org" References: <1354745355.79857.YahooMailNeo@web140001.mail.bf1.yahoo.com> <20121205222738.GB6239@liondog.tnic> <1354748412.17691.YahooMailNeo@web140005.mail.bf1.yahoo.com> <20121205230835.GF6222@liondog.tnic> <1354968839.35825.YahooMailNeo@web140006.mail.bf1.yahoo.com> <20121209111857.GC24106@liondog.tnic> <1355054935.13447.YahooMailNeo@web140004.mail.bf1.yahoo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <1355054935.13447.YahooMailNeo@web140004.mail.bf1.yahoo.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Dec 09, 2012 at 04:08:55AM -0800, John wrote: > While I agree that the differences as small - on the order of > ms - they are not insignificant nor are they in the noise of the > measurements. Oh, maybe I wasn't clear - I wasn't talking about statistical significance but rather about practical significance. A minuscule speedup (a lot less than 1%) showing only in a *single* workload so far and relevant only for a *very* *small* number of linux users - only those who build their own kernels - is simply not worth including in the kernel. -- Regards/Gruss, Boris.