From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 23607 invoked by alias); 23 Apr 2013 13:19:02 -0000 Mailing-List: contact libc-ports-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: libc-ports-owner@sourceware.org Received: (qmail 23598 invoked by uid 89); 23 Apr 2013 13:19:02 -0000 X-Spam-SWARE-Status: No, score=0.1 required=5.0 tests=AWL,BAYES_20,FREEMAIL_FROM,SPF_NEUTRAL autolearn=no version=3.3.1 Received: from popelka.ms.mff.cuni.cz (HELO popelka.ms.mff.cuni.cz) (195.113.20.131) by sourceware.org (qpsmtpd/0.84/v0.84-167-ge50287c) with ESMTP; Tue, 23 Apr 2013 13:19:01 +0000 Received: from domone.kolej.mff.cuni.cz (popelka.ms.mff.cuni.cz [195.113.20.131]) by popelka.ms.mff.cuni.cz (Postfix) with ESMTPS id 9F35743590; Tue, 23 Apr 2013 15:18:56 +0200 (CEST) Received: by domone.kolej.mff.cuni.cz (Postfix, from userid 1000) id 0073C6046E; Tue, 23 Apr 2013 15:18:23 +0200 (CEST) Date: Tue, 23 Apr 2013 13:19:00 -0000 From: =?utf-8?B?T25kxZllaiBCw61sa2E=?= To: joseph@codesourcery.com, marcus.shawcroft@arm.com Cc: libc-ports@sourceware.org Subject: [RFC] hp-timing for arm and aarch Message-ID: <20130423131823.GA14840@domone.kolej.mff.cuni.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.20 (2009-06-14) X-SW-Source: 2013-04/txt/msg00100.txt.bz2 Hi, To get more accurate benchmarks we need precise timing. Could you provide a version for arm? After bit of googling I found arm performance counters here. http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.faqs/ka4237.html It should be possible to in init setup cycle performance counter and then read timing from it. I am not expert at arm so I would leave this to somebody with more experience.