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=-6.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS autolearn=ham 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 38ED8C282DD for ; Thu, 9 Jan 2020 16:30:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0C22720721 for ; Thu, 9 Jan 2020 16:30:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578587414; bh=QrZvthlzizcWbBIK0uVSmw0bZpQBJKO1KkJ6E+nHviE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=Mp6zw7j0/wzJcFEMdaEXhHFNq7u5JE+urUqiEjl7P1sB4SLoYghcEWqZabi87Qsu+ KKQYC2zZBPla98GbiHItUYM7DOpK684/hll7ciegYyW7M053QrTqzAcorheLiQC3V0 cTkMY8i4WcLhQJAJas045BIDNkJOj+PWloGr0Ayc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730589AbgAIQaN (ORCPT ); Thu, 9 Jan 2020 11:30:13 -0500 Received: from mail.kernel.org ([198.145.29.99]:33938 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728840AbgAIQaN (ORCPT ); Thu, 9 Jan 2020 11:30:13 -0500 Received: from localhost (lfbn-tou-1-1502-76.w90-89.abo.wanadoo.fr [90.89.68.76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id AABB82067D; Thu, 9 Jan 2020 16:30:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1578587413; bh=QrZvthlzizcWbBIK0uVSmw0bZpQBJKO1KkJ6E+nHviE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=hlMr7qfj3Stdv/x03Sd30cXsn221NPEYgT6xh88S/FpzDwFIHMPLpCWKBl/1nxHeK myRYc2tLIWwFpMNardIFIhi3cIOfF979ogb90+COk+vdMz5epDjIhoPCRBt4MDmHBM gKH5IabfTUBsb+otKAN/v8+3jM2USel4PWlveYVI= Date: Thu, 9 Jan 2020 17:30:09 +0100 From: Maxime Ripard To: Vasily Khoruzhick Cc: Chen-Yu Tsai , Rob Herring , Mark Rutland , arm-linux , devicetree Subject: Re: [PATCH v2 0/4] arm64: allwinner: a64: Enable DVFS on A64 Message-ID: <20200109163009.v4jc22jyjushbxxx@gilmour.lan> References: <20200108042018.571251-1-anarsoul@gmail.com> <20200108160402.u44odtfsuhiuytfl@gilmour.lan> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="yu3dj7bbxga4rc5i" Content-Disposition: inline In-Reply-To: Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org --yu3dj7bbxga4rc5i Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wed, Jan 08, 2020 at 08:38:10AM -0800, Vasily Khoruzhick wrote: > On Wed, Jan 8, 2020 at 8:04 AM Maxime Ripard wrote: > > > > Hi, > > > > On Tue, Jan 07, 2020 at 08:20:14PM -0800, Vasily Khoruzhick wrote: > > > This series introduces new DTSI with operating points for A64, > > > adds cooling maps and thermal tripping points and enables DVFS > > > on all the supported A64-based boards > > > > Thanks for that new series. > > > > I'm not sure I've seen the answer, but how did you test that the OPPs > > were stable? > > I've been using them for close to 2 years and haven't seen any > issues so far. I'm sure you did, but those issues can be easily masked depending on your config (and the default governor you have) and the workload. > > So far, the only method that proved to be reliable was to run > > https://github.com/ssvb/cpuburn-arm/blob/master/cpufreq-ljt-stress-test > > > > Could you paste the result (one board should be enough) ? > > Here is a run on Pine64-LTS: > https://gist.github.com/anarsoul/23c361b42bcdf4f2e23624f74c4c94bc Awesome, thanks! Maxime --yu3dj7bbxga4rc5i Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRcEzekXsqa64kGDp7j7w1vZxhRxQUCXhdVDAAKCRDj7w1vZxhR xV2/AP4ph8ruPTTtBNeFVcqqYllFYD+dyWFzhfn+5pGAzFGHCAD+PRx5Q2rvIBUJ FqDnaJWoTHa9HsvJgXVDvrvx6MVcsgg= =SZCt -----END PGP SIGNATURE----- --yu3dj7bbxga4rc5i--