Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757066AbcCaOji (ORCPT ); Thu, 31 Mar 2016 10:39:38 -0400 Received: from cmta7.telus.net ([209.171.16.80]:47055 "EHLO cmta7.telus.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756655AbcCaOjg convert rfc822-to-8bit (ORCPT ); Thu, 31 Mar 2016 10:39:36 -0400 X-Authority-Analysis: v=2.1 cv=daR9pije c=1 sm=2 tr=0 a=zJWegnE7BH9C0Gl4FFgQyA==:117 a=zJWegnE7BH9C0Gl4FFgQyA==:17 a=L9H7d07YOLsA:10 a=9cW_t1CCXrUA:10 a=s5jvgZ67dGcA:10 a=Pyq9K9CWowscuQLKlpiwfMBGOR0=:19 a=IkcTkHD0fZMA:10 a=yNshhTqyj7-5AsUxMmIA:9 a=QEXdDO2ut3YA:10 X-Telus-Outbound-IP: 173.180.45.4 From: "Doug Smythies" To: "=?utf-8?Q?'J=C3=B6rg_Otte'?=" , "'Srinivas Pandruvada'" Cc: "'Rafael J. Wysocki'" , "'Linux Kernel Mailing List'" , , "'Rafael J. Wysocki'" References: <4187911.uaFVupaTVL@vostro.rjw.lan> <1459352017.13525.45.camel@intel.com> <002401d18ab5$0bf84a30$23e8de90$@net> <1459364336.13525.69.camel@linux.intel.com> <1459369587.13525.75.camel@linux.intel.com> In-Reply-To: Subject: RE: [intel-pstate driver regression] processor frequency very high even if in idle Date: Thu, 31 Mar 2016 07:39:30 -0700 Message-ID: <002701d18b5b$22ea72d0$68bf5870$@net> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8BIT X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AdGLLv7MHgs7AILJQgirHrp+XHtjlAAKu6Mg Content-Language: en-ca Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1626 Lines: 44 On 2016.03.31 02:24 Jörg Otte wrote: > jojo@fichte:/sys/devices/system/cpu/cpufreq/policy0$ cat scaling_governor > powersave > > turbostat -i 1 --msr=0x199 > CPUID(7): No-SGX > CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199 > - 45 1.74 2590 2496 0x00000000 > 0 45 1.76 2565 2498 0x00000a00 > 1 72 2.84 2548 2496 0x00000800 > 2 30 1.11 2661 2496 0x00001a00 > 3 33 1.23 2661 2495 0x00001a00 > CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199 > - 9 0.35 2525 2495 0x00000000 > 0 1 0.04 2735 2495 0x00000800 > 1 1 0.05 2501 2495 0x00000800 > 2 17 0.65 2540 2495 0x00001a00 > 3 16 0.64 2501 2495 0x00001a00 > CPU Avg_MHz Busy% Bzy_MHz TSC_MHz MSR 0x199 > - 11 0.43 2523 2495 0x00000000 > 0 3 0.11 2631 2495 0x00000c00 > 1 7 0.27 2524 2495 0x00000800 > 2 18 0.72 2527 2495 0x00001a00 > 3 15 0.61 2501 2495 0x00001a00 Very Interesting. I would still like to get a trace sample to post process. Copied from a previous e-mail: On an otherwise idle system, do: # perf record -a --event=power:pstate_sample sleep 300 If pressed for time, your sleep time can be less than 5 minutes, but try to get at least 100 seconds. The resulting perf.data file will be too big to include as an on-list attachment, but send it (or them) to me off-list for post processing, and I'll report back. ... Doug