From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753837AbeCFQ6q (ORCPT ); Tue, 6 Mar 2018 11:58:46 -0500 Received: from cmta16.telus.net ([209.171.16.89]:58857 "EHLO cmta16.telus.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750782AbeCFQ6o (ORCPT ); Tue, 6 Mar 2018 11:58:44 -0500 X-Authority-Analysis: v=2.2 cv=EJrp6xRC c=1 sm=1 tr=0 a=zJWegnE7BH9C0Gl4FFgQyA==:117 a=zJWegnE7BH9C0Gl4FFgQyA==:17 a=Pyq9K9CWowscuQLKlpiwfMBGOR0=:19 a=kj9zAlcOel0A:10 a=9oqwl-f-OR4gXzqXwRMA:9 a=CjuIK1q_8ugA:10 From: "Doug Smythies" To: "'Rafael J. Wysocki'" Cc: "'Paul McKenney'" , "'Thomas Ilsche'" , "'Thomas Gleixner'" , "'Peter Zijlstra'" , "'Rik van Riel'" , "'Aubrey Li'" , "'Mike Galbraith'" , "'LKML'" , "'Linux PM'" , "'Frederic Weisbecker'" , "Doug Smythies" References: sc97eXGePpApssc9CeDAYz In-Reply-To: sc97eXGePpApssc9CeDAYz Subject: RE: [RFC/RFT][PATCH 0/7] sched/cpuidle: Idle loop rework Date: Tue, 6 Mar 2018 08:50:30 -0800 Message-ID: <000a01d3b56b$3fd8b050$bf8a10f0$@net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook 12.0 Content-Language: en-ca Thread-Index: AdO0CGa4JO6iVqXPSJGY/c8kVHh+IAAyl8Gg X-CMAE-Envelope: MS4wfNYFIA5RXduOh5zOoJdpqsD8SIvXJ50IawsedfGS5fsGdDXE22zoF0Zgi7iRneZTnHOXBLPMlCWk6PzITUv7CCqPbuvg1jzaX4qULBev4msdFsx539VL d++gKECSHtTBtiL9Nj46gRx6K/TzAzRY6vIuX1R7MP13HsQUAO84HmbO0xY91N5Fd487Ur0NQlfx5GUKhWLyPBk82C/L8VpIObYemT1qi5Ov6AVhq2uDJrhu FcBavgh0mxuWQxjcnQrfc+V4OoiSDrIWQPDrzA06CSnNvmHxxj3V3bntoaqcJr8Z7uz3ARq6NFTpSiVHgan1U6IE5QMQXNVXKQaA1btreg8Axya/NjJnbB3+ ixzCg762T+s28GluEvbjePYHm27GGYblCG2DkmvnUvsh2+oZXSM2ZgEaDiANj/XCDDtxfV42titIvV/1AVmvcDLZFl82UTs0sUTtM5r1Sr3nNpBQXTey6gwm 5bKWHQBtkRdLzhFEGUtG9kZHmH6CsQRVp1EbQjvwRZIouTnDISRZS3UEnH8= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2018.03.04 14:22 Rafael J. Wysocki wrote: ...[snip]... > I have tested these patches on a couple of machines, including the very laptop > I'm sending them from, without any obvious issues, but please give them a go > if you can, especially if you have an easy way to reproduce the problem they > are targeting. The patches are on top of 4.16-rc3 (if you need a git branch > with them for easier testing, please let me know). I am having some troubles with the patch set. My test server takes anywhere between nominal (about 30 seconds) and 10X nominal (about 5 minutes) time to boot. I have booted 5 times: 1. took about 5 minutes to boot. No test data acquired. Kern.log excerpt: [ 5.760740] Btrfs loaded, crc32c=crc32c-intel [ 5.779522] random: crng init done [ 336.185559] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null) [ 346.823627] Loading iSCSI transport class v2.0-870. 2. took about 5 minutes to boot. Minimal test data acquired. Kern.log excerpt: [ 8.963959] async_tx: api initialized (async) [ 9.001124] Btrfs loaded, crc32c=crc32c-intel [ 9.024652] random: crng init done [ 332.768025] clocksource: timekeeping watchdog on CPU3: Marking clocksource 'tsc' as unstable because the skew is too large: [ 332.768128] clocksource: 'hpet' wd_now: 1c082869 wd_last: a5053b0 mask: ffffffff [ 332.768129] clocksource: 'tsc' cs_now: 11a0d3a34be cs_last: 1b534f1252 mask: ffffffffffffffff [ 332.768129] tsc: Marking TSC unstable due to clocksource watchdog [ 332.768145] TSC found unstable after boot, most likely due to broken BIOS. Use 'tsc=unstable'. Observe 25.14 average processor package watts. 100% load on CPU 7. Test Duration 2.5 hours. Reference: K4.16-rc3: Not done yet. Reference: K4.15-rc1: 27.34 Watts Reference: K4.15-rc1, idle states 0-3 disabled: 23.92 Watts Reference: This kernel, idle states 0-3 disabled: ~23.65 Watts 3. crashed during boot. No useful log info. 4. booted kernel 4.16-rc3 stock. Booted normally in about 30 seconds. 5. took about 30 seconds to boot. Minimal test data acquired. Observe 24.77 average processor package watts. 100% load on CPU 7. Test duration 15 hours. Peak power 32.8 watts. There is a graph. I'll send it off-list. Oh, I see a version 2 of the patch set. I'll move on to version 2. ... Doug