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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 D23F5C433E0 for ; Wed, 24 Feb 2021 18:18:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6E8F764EF1 for ; Wed, 24 Feb 2021 18:18:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234883AbhBXSSA (ORCPT ); Wed, 24 Feb 2021 13:18:00 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48234 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234128AbhBXSR6 (ORCPT ); Wed, 24 Feb 2021 13:17:58 -0500 Received: from merlin.infradead.org (merlin.infradead.org [IPv6:2001:8b0:10b:1231::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 99EF5C061574 for ; Wed, 24 Feb 2021 10:17:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=merlin.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=mW17obZYHxgqq8NqyID1PaWyTvdWia3zxGHSfanX3QQ=; b=LTb9ekPDBE2BlPrNsDs+p3oxmg zOSxObzCWyCKogG024Wlz2b16A1kf+j4aifINmkMOjIYBxndKt9pUXzE/oFn7bx8m9TG6ZKGmGrCq sj6Nl6mL88+LMh6fR+Hn7fWm/T6SMfafN08ypHUmwbNCuBG2eyq0s3dCLx4Hpclt4G6NjqQFNuXsm i9lkh6CHPTegXHN5inyVzb1gSignhRw8GR5OWT2W8ThMgZX98MBJEUyNUcvU2PNcJRewdQxBPttxd aJ5eG//KtVCXWZab8a/6wvfiSlS5FSQSUHBGkfWwmG1zdkPUDwWQjV0NKALhD4E6fmUni1GZ20D5l uvHlB3+g==; Received: from j217100.upc-j.chello.nl ([24.132.217.100] helo=noisy.programming.kicks-ass.net) by merlin.infradead.org with esmtpsa (Exim 4.92.3 #3 (Red Hat Linux)) id 1lEyie-0003xN-7P; Wed, 24 Feb 2021 18:17:04 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 91253301A32; Wed, 24 Feb 2021 19:17:02 +0100 (CET) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 72FAA206FA6AD; Wed, 24 Feb 2021 19:17:02 +0100 (CET) Date: Wed, 24 Feb 2021 19:17:02 +0100 From: Peter Zijlstra To: Vincent Guittot Cc: Ingo Molnar , Juri Lelli , Dietmar Eggemann , Steven Rostedt , Ben Segall , Mel Gorman , Daniel Bristot de Oliveira , linux-kernel , Joel Fernandes , Valentin Schneider , Frederic Weisbecker , Thomas Gleixner , Qais Yousef Subject: Re: [PATCH 0/7 v4] move update blocked load outside newidle_balance Message-ID: References: <20210224133007.28644-1-vincent.guittot@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Feb 24, 2021 at 06:51:01PM +0100, Vincent Guittot wrote: > > OK, shall I add something like: > > > > This reduces the IRQ latency from O(nr_cgroups * nr_nohz_cpus) to > > O(nr_cgroups). > > > > To the changelog of patch #1 ? > > Yes, good point. This will clarify the range of improvement OK, done.