From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nishanth Menon Subject: Re: Beagleboard xM - Bogomips are very low Date: Tue, 19 Mar 2013 11:09:39 -0500 Message-ID: <20130319160938.GA31417@kahuna> References: <5148819A.5040500@free.fr> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Return-path: Received: from comal.ext.ti.com ([198.47.26.152]:60977 "EHLO comal.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756899Ab3CSQJl (ORCPT ); Tue, 19 Mar 2013 12:09:41 -0400 Content-Disposition: inline In-Reply-To: <5148819A.5040500@free.fr> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Guillaume Gardet Cc: linux-omap@vger.kernel.org On 16:17-20130319, Guillaume Gardet wrote: > Hi, > > On a Beagleboard xM rev. B, I noticed that vanilla kernel 3.4.6 have the folowing bogomips for 300MHz and 800 MHz operations: 262.08 and 700.57. > > With kernel 3.7.10, I have : 175.65 and 467.41 bogompis. > > Any idea why bogomips are so low now? using my DTS cpufreq series (which I am about to post to linux-omap): https://github.com/nmenon/linux-2.6-playground/commits/push/cpufreq-cpu0-omap-all-v2 and a test script: http://pastebin.com/zrr8ptge I See (3.9-rc3): http://pastebin.com/4JCV3dnX bogomips@ boot: BogoMIPS : 395.67 Boot scaling frequency =600000 TESTING for 1 seconds at 300000 current scaling frequency(for 300000) =300000 bogomips@ frequency 300000: BogoMIPS : 197.83 TESTING for 1 seconds at 600000 current scaling frequency(for 600000) =600000 bogomips@ frequency 600000: BogoMIPS : 395.67 TESTING for 1 seconds at 800000 current scaling frequency(for 800000) =800000 bogomips@ frequency 800000: BogoMIPS : 527.56 -- Regards, Nishanth Menon