From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 62ED9C433E0 for ; Thu, 2 Jul 2020 19:46:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 453E420760 for ; Thu, 2 Jul 2020 19:46:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726116AbgGBTqG (ORCPT ); Thu, 2 Jul 2020 15:46:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39972 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725937AbgGBTqG (ORCPT ); Thu, 2 Jul 2020 15:46:06 -0400 Received: from scorn.kernelslacker.org (scorn.kernelslacker.org [IPv6:2600:3c03:e000:2fb::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 50DCEC08C5C1 for ; Thu, 2 Jul 2020 12:46:06 -0700 (PDT) Received: from [2601:196:4600:6634:ae9e:17ff:feb7:72ca] (helo=wopr.kernelslacker.org) by scorn.kernelslacker.org with esmtp (Exim 4.92) (envelope-from ) id 1jr59k-0001eK-Uq; Thu, 02 Jul 2020 15:46:00 -0400 Received: by wopr.kernelslacker.org (Postfix, from userid 1026) id 9F0DE56011F; Thu, 2 Jul 2020 15:46:00 -0400 (EDT) Date: Thu, 2 Jul 2020 15:46:00 -0400 From: Dave Jones To: Linux Kernel , peterz@infradead.org, mgorman@techsingularity.net, mingo@kernel.org, Linus Torvalds Subject: Re: weird loadavg on idle machine post 5.7 Message-ID: <20200702194600.GA28941@codemonkey.org.uk> Mail-Followup-To: Dave Jones , Linux Kernel , peterz@infradead.org, mgorman@techsingularity.net, mingo@kernel.org, Linus Torvalds References: <20200702171548.GA11813@codemonkey.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200702171548.GA11813@codemonkey.org.uk> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jul 02, 2020 at 01:15:48PM -0400, Dave Jones wrote: > When I upgraded my firewall to 5.7-rc2 I noticed that on a mostly > idle machine (that usually sees loadavg hover in the 0.xx range) > that it was consistently above 1.00 even when there was nothing running. > All that perf showed was the kernel was spending time in the idle loop > (and running perf). Unfortunate typo there, I meant 5.8-rc2, and just confirmed the bug persists in 5.8-rc3. Dave