From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2701B1BEF8A for ; Mon, 13 Jan 2025 11:05:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.92.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736766352; cv=none; b=PQX1veDKPkUH9oBIcVu7c61OiBlDwiizeaGfBo9FmEagsX8e8iRXD98xejNCWbKLJkvZBnAIe5sNTIPn4CKW57CtdtYA4Jh/gtjLZQ36xveHvrFtEhXJ5HgCv6uy6zypXZh5tHiDCDLA6I3cGDhqacLwdtHu10RaCVAcUeWCmNY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736766352; c=relaxed/simple; bh=gE1RArbCQAZxvVqkQ1hGmf34wfx+sq/22NGxfHa/Sjw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=H+4NDZ41wrFvBuOp+bp96s3++kASr6KQR8245GI5iXjaNFsuxCAS56jE/Iq6/EIYb5mBYLKPAeYHZ4rF3UqLUNp/7yUEA55xm2EOyf737QS5Nbp1+kDdNOOLuhuIJir6LSO8bMDkHn5si++Fefzxp9yyoFWqWXTil1KbA1TMYjk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=M3fbdKB2; arc=none smtp.client-ip=90.155.92.199 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="M3fbdKB2" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; 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=Ng0KNGqQBm7KSAXoha3+Wg47kjwcXStQ2pMnsKQ/iac=; b=M3fbdKB2fB97yuRVaKp9RKOEeO r6nhB3u0bYGJHh4JUVbrB2C3w/rMy8lGnGPxKiu3PMsL7RwPAUzuzFhyYpb3ZiWXN4ukGoW8G/t2E Kp+l9YpMwPllt2202iM1OmfB5pDOBvp/SO52NWheqonsg6+KmdfzCNf/EPD0GXYAYkn/gTnHTm4yC scKkNf3YljjJ3NnH+Yoa5E2F/DCw6J86TCN6QmlBg0zaeDam6O9wEN5DT7dCA6Mwkfaj8jNtbwwJT MxsmwS1uhDgUUiFnWZSu3liYmHl69g5eCTd0EF2cR8f8kxMdepgfO7S5+p0N9FxUA2XBpEcaf8pXU 2bh+Qwug==; Received: from 77-249-17-89.cable.dynamic.v4.ziggo.nl ([77.249.17.89] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.98 #2 (Red Hat Linux)) id 1tXIGQ-0000000AHX9-2SkM; Mon, 13 Jan 2025 11:05:46 +0000 Received: by noisy.programming.kicks-ass.net (Postfix, from userid 1000) id 27BC9300677; Mon, 13 Jan 2025 12:05:46 +0100 (CET) Date: Mon, 13 Jan 2025 12:05:46 +0100 From: Peter Zijlstra To: Doug Smythies Cc: linux-kernel@vger.kernel.org, vincent.guittot@linaro.org, 'Ingo Molnar' , wuyun.abel@bytedance.com Subject: Re: [REGRESSION] Re: [PATCH 00/24] Complete EEVDF Message-ID: <20250113110546.GE5388@noisy.programming.kicks-ass.net> References: <001b01db608a$56d3dc40$047b94c0$@telus.net> <20250107112606.GN20870@noisy.programming.kicks-ass.net> <20250107192340.GB36003@noisy.programming.kicks-ass.net> <001501db618c$67bd8170$37388450$@telus.net> <20250108131205.GO20870@noisy.programming.kicks-ass.net> <001b01db61e4$c3ce5a40$4b6b0ec0$@telus.net> <20250109105959.GA2981@noisy.programming.kicks-ass.net> <002f01db631d$d265a600$7730f200$@telus.net> <20250110115720.GA17405@noisy.programming.kicks-ass.net> <00c201db6547$b43b9a50$1cb2cef0$@telus.net> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <00c201db6547$b43b9a50$1cb2cef0$@telus.net> On Sun, Jan 12, 2025 at 03:14:17PM -0800, Doug Smythies wrote: > The test I have been running to create some of the graphs I have been > attaching is a little different, using turbostat with different options: > > turbostat --quiet --Summary --show Busy%,Bzy_MHz,IRQ,PkgWatt,PkgTmp,TSC_MHz,Time_Of_Day_Seconds --interval 1 > > And with this test I get intervals over 1 second by over 10 milliseconds. > First the b12 kernel (the last good one in the kernel bisection): > > Time Occurrences > 1.000000, 3282 > 1.001000, 1826 > 1.002000, 227 > 1.003000, 1852 > 1.004000, 1036 > 1.005000, 731 > 1.006000, 75 > 1.007000, 30 > 1.008000, 9 > 1.009000, 2 > 1.010000, 1 > 1.011000, 1 You're creating these Time values from the consecutive Time_Of_Day_Seconds data using a script? Let me go check the turbostat code to see if my hackery is still invoked, even if not displayed.