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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_MUTT 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 B6089C31E51 for ; Tue, 18 Jun 2019 08:34:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8646320863 for ; Tue, 18 Jun 2019 08:34:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726505AbfFRIex (ORCPT ); Tue, 18 Jun 2019 04:34:53 -0400 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:44341 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725913AbfFRIex (ORCPT ); Tue, 18 Jun 2019 04:34:53 -0400 Received: by atrey.karlin.mff.cuni.cz (Postfix, from userid 512) id D615E80305; Tue, 18 Jun 2019 10:34:39 +0200 (CEST) Date: Tue, 18 Jun 2019 10:34:50 +0200 From: Pavel Machek To: Doug Smythies Cc: "'Rafael J. Wysocki'" , 'kernel list' , 'ACPI Devel Maling List' , "'Zhang, Rui'" , "'Rafael J. Wysocki'" , 'Viresh Kumar' , 'Linux PM' , 'Thomas Gleixner' , 'Ingo Molnar' , 'Borislav Petkov' , "'H. Peter Anvin'" , 'the arch/x86 maintainers' Subject: Re: 5.2-rc2: low framerate in flightgear, cpu not running at full speed, thermal related? Message-ID: <20190618083449.GA4541@amd> References: <20190609111732.GA2885@amd> <007701d520c7$c397bda0$4ac738e0$@net> <008f01d52178$07b3be70$171b3b50$@net> <002601d525ae$a2c00c90$e84025b0$@net> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="tKW2IUtsqtDRztdT" Content-Disposition: inline In-Reply-To: <002601d525ae$a2c00c90$e84025b0$@net> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org --tKW2IUtsqtDRztdT Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue 2019-06-18 01:20:01, Doug Smythies wrote: > On 2019.06.13 01:53 Rafael J. Wysocki wrote: >=20 > > I personally doubt that any thermal throttling is involved here. >=20 > In earlier e-mails on this thread, Pavel showed his core and package > temperatures as 97 and 98 degrees. If thermal throttling is not > involved, it should be. The description of the observed CPU > frequencies also matched my experiences with thermal throttling > for the intel-pstate/powersave example. Myself, I can not determine > if throttling is involved for the acpi-cpufreq/ondemand > case, just from the clock frequencies, because, > at least on my system, it uses the kidle_inject method > instead of the pstate method. Yes, I'm pretty sure it is thermal throttling. System is running > 3GHz when cold, and going below 2GHz when hot... And I'm pretty sure the throttling works, too, because temperature goes to ~98C quickly, and stays there. Best regards, Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --tKW2IUtsqtDRztdT Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAl0IoikACgkQMOfwapXb+vJV8gCfcqCwVwZID6HpXgg4CVIPrSnT 3dMAoIwd4ZnSLDub83/RvqsWweszPhpA =t1EA -----END PGP SIGNATURE----- --tKW2IUtsqtDRztdT--