From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760675AbYDCJfx (ORCPT ); Thu, 3 Apr 2008 05:35:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757579AbYDCJfp (ORCPT ); Thu, 3 Apr 2008 05:35:45 -0400 Received: from triton.rz.uni-saarland.de ([134.96.7.25]:24266 "EHLO triton.rz.uni-saarland.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757530AbYDCJfo (ORCPT ); Thu, 3 Apr 2008 05:35:44 -0400 Date: Thu, 3 Apr 2008 11:34:59 +0200 From: Alexander van Heukelum To: Andi Kleen , Ingo Molnar Cc: LKML , Alexander van Heukelum Subject: Re: [PATCH] x86: remove x86-specific implementations of find_first_bit Message-ID: <20080403093459.GA28740@mailshack.com> References: <20080331171506.GA24017@mailshack.com> <20080401084710.GB4787@elte.hu> <20080401094618.GA24862@mailshack.com> <20080401154126.GA26062@mailshack.com> <20080401154221.GB26062@mailshack.com> <20080401154757.GC26062@mailshack.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20080401154757.GC26062@mailshack.com> User-Agent: Mutt/1.5.9i X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-3.0 (triton.rz.uni-saarland.de [134.96.7.25]); Thu, 03 Apr 2008 11:35:25 +0200 (CEST) X-AntiVirus: checked by AntiVir MailGate (version: 2.1.2-14; AVE: 7.6.0.80; VDF: 7.0.3.110; host: AntiVir3) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Apr 01, 2008 at 05:47:57PM +0200, Alexander van Heukelum wrote: > This patch should of course wait until it is decided if the generic > version is good enough to replace the x86-specific ones. I hacked > together a benchmark that people can run on different machines. It can > be downloaded from: > > http://heukelum.fastmail.fm/find_first_bit I now put a much more sound benchmarking program there. And its results for P-IV-like Xeon, Athlon XP and Opteron for the current and generic implementations. Greetings, Alexander