From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754604Ab3JRNgd (ORCPT ); Fri, 18 Oct 2013 09:36:33 -0400 Received: from mail.skyhub.de ([78.46.96.112]:51027 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754403Ab3JRNgc (ORCPT ); Fri, 18 Oct 2013 09:36:32 -0400 Date: Fri, 18 Oct 2013 15:36:30 +0200 From: Borislav Petkov To: Joonas Saarinen Cc: linux-kernel@vger.kernel.org Subject: Re: AMD Bobcat cpufreq Message-ID: <20131018133630.GD1007@pd.tnic> References: <31997499.9414731382102390275.JavaMail.jza@saunalahti.fi> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <31997499.9414731382102390275.JavaMail.jza@saunalahti.fi> 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 Fri, Oct 18, 2013 at 04:19:49PM +0300, Joonas Saarinen wrote: > It's promising that the boost state support is "supported and > active" but the output is still kind of sparse. There's no mention > about specific turbo states, could be bug in the tool... > nor do I get /proc/cpuinfo or that cpupower tool ever to show an > evidence that the CPU is going to 1333MHz. On Windows CPU-Z showed it > constantly visiting that state. You can also try turbostat in tools/power/x86/turbostat/ # ./turbostat -i 1 to give you core freq. readout every second and then pin a workload on one core in another shell, say kernel build: $ taskset 1 make You should be able to see core 0 boosting like in my case: cor CPU GHz TSC 3.90 4.01 0 0 4.17 4.01 1 1 4.17 4.01 2 2 2.23 4.01 3 3 2.74 4.01 4 4 1.83 4.01 5 5 3.23 4.01 6 6 1.69 4.01 7 7 1.43 4.01 cores 0 and 1 go over 4GHz which is their boosted state. HTH. -- Regards/Gruss, Boris. Sent from a fat crate under my desk. Formatting is fine. --