From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752422AbbBVNWI (ORCPT ); Sun, 22 Feb 2015 08:22:08 -0500 Received: from mail.skyhub.de ([78.46.96.112]:47575 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752171AbbBVNWC (ORCPT ); Sun, 22 Feb 2015 08:22:02 -0500 Date: Sun, 22 Feb 2015 14:21:04 +0100 From: Borislav Petkov To: Ingo Molnar Cc: Andy Lutomirski , Oleg Nesterov , Rik van Riel , x86@kernel.org, linux-kernel@vger.kernel.org, Linus Torvalds , Arjan van de Ven , kbuild-all@01.org Subject: Re: [RFC PATCH] x86, fpu: Use eagerfpu by default on all CPUs Message-ID: <20150222132104.GD7529@pd.tnic> References: <20150221093150.GA27841@gmail.com> <20150221163840.GA32073@pd.tnic> <20150221172914.GB32073@pd.tnic> <20150221183952.GD8406@gmail.com> <20150221191527.GC32073@pd.tnic> <20150221192352.GA10027@gmail.com> <20150221213625.GD32073@pd.tnic> <20150222081840.GA22972@gmail.com> <20150222125023.GC7529@pd.tnic> <20150222125736.GA25667@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20150222125736.GA25667@gmail.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Feb 22, 2015 at 01:57:36PM +0100, Ingo Molnar wrote: > This is also very similar to the ~0.6 secs improvement your > first set of numbers gave. Yeah, running without --repeat was simply misleading. > So now that it appears we have consistent numbers, it would > be nice to check it on older hardware (and other workloads) > as well, to see whether it's a consistent win. I'll try to dig out some old boxes we have here, maybe the build robot could do some measurements too. Fengguang et al, guys, is it possible for you to run this patch: https://lkml.kernel.org/r/b0ba174ea882ed36cf7011e872baf427c23b7e09.1424458621.git.luto@amacapital.net on your fleet - has to be baremetal - to check how it behaves, performance-wise? Older machines would be preferred... That would be lovely :-) Thanks! -- Regards/Gruss, Boris. ECO tip #101: Trim your mails when you reply. --