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=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, 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 C345EFA372D for ; Thu, 17 Oct 2019 08:25:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 961A320820 for ; Thu, 17 Oct 2019 08:25:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="sSSWDSRc" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2408237AbfJQIZv (ORCPT ); Thu, 17 Oct 2019 04:25:51 -0400 Received: from merlin.infradead.org ([205.233.59.134]:51732 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390082AbfJQIZv (ORCPT ); Thu, 17 Oct 2019 04:25:51 -0400 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:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=lwJxn9QBi3wt/6dfD+wqzvEQfXxlMoAjM2J8+Itpyoc=; b=sSSWDSRcexzsb2xf3aHmyAa/I XdhMJr2FL9dMfRcV5eKO/MagVWWOrIvZbGSJXNW0SLqxvIdM/NCDx57wIkYqRp+IXs0tOAEkqbA+Y dy3ngfwqYaQM4xrLHrZuKTZ9wUvSt1RiglPDvEjwSf/08yUBS5CDYqveFN9dbPKgunTc922e5+Fcl hy1YaPnHMu83yHVytxJPSwUk9PG1tjSZpBVOF4ET9J4Qm7TLPsTQL/86ijbvnRz7p5BTqs7UUn6NB 1RoH4GNNGwCtlOrRioGrsluOS6klVyndyCFOldqmUOMjl+u7gPgApGNCQpYj0jFPaKdDhSyNdcRLM VUSdGsvxw==; 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 1iL16J-0003yN-QC; Thu, 17 Oct 2019 08:25:40 +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 32BAE304637; Thu, 17 Oct 2019 10:24:42 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 7311F200DE9E1; Thu, 17 Oct 2019 10:25:37 +0200 (CEST) Date: Thu, 17 Oct 2019 10:25:37 +0200 From: Peter Zijlstra To: Douglas Raillard Cc: Patrick Bellasi , Vincent Guittot , linux-kernel , Ingo Molnar , "Rafael J . Wysocki" , Viresh Kumar , Quentin Perret , Dietmar Eggemann , Morten Rasmussen , Juri Lelli Subject: Re: [PATCH] sched/fair: util_est: fast ramp-up EWMA on utilization increases Message-ID: <20191017082537.GX2328@hirez.programming.kicks-ass.net> References: <20190620150555.15717-1-patrick.bellasi@arm.com> <20190628100751.lpcwsouacsi2swkm@e110439-lin> <20190628123800.GS3419@hirez.programming.kicks-ass.net> <20190628140057.7aujh2wsk7wtqib3@e110439-lin> <20190802094725.ploqfarz7fj7vrtp@e110439-lin> <20191014145218.GI2328@hirez.programming.kicks-ass.net> <48adc956-77a4-e293-29d9-cd8b82a40ae8@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <48adc956-77a4-e293-29d9-cd8b82a40ae8@arm.com> 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 Mon, Oct 14, 2019 at 05:16:02PM +0100, Douglas Raillard wrote: > random idea: Since these things are much easier to understand by looking at a graph > of util over time, we may agree on some mailing-list-friendly way to convey graphs. I don't think that this patch warrants something like that. It is fairly clear what it does. For other stuff, maybe. > For example, a simple CSV with: > * before/after delimiters (line of # or =) > * graph title > * one point per signal transition, so that it can be plotted with gnuplot style "steps" or matplotlib drawstyle='steps-post' > * consistent column names: > - time: in seconds (scientific notation for nanoseconds) > - activation: 1 when the task is actually running, 0 otherwise > (so it can be turned into transparent coloured bands like using gnuplot filledcurves, like in [1]) > - util: util_avg of the task being talked about > > The delimiters allow writing a scripts to render graphs directly out of an mbox file or ML archive URL. > This won't solve the issue for the commit message itself, but that may ease the ML discussions. Something like that could work; mutt can easily pipe emails into scripts. OTOH gnuplot also has ASCII output, so one can easily stick something like that into email.