From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pavel Machek Subject: Re: v4.8-rc1: thinkpad x60: running at low frequency even during kernel build Date: Fri, 4 Nov 2016 21:44:39 +0100 Message-ID: <20161104204439.GA2581@amd> References: <20161104083849.GA32688@amd> <20161104085830.GA4089@amd> <1478268311.26953.17.camel@intel.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="lrZ03NoBR/3+SXJZ" Return-path: Content-Disposition: inline In-Reply-To: <1478268311.26953.17.camel@intel.com> Sender: linux-acpi-owner@vger.kernel.org To: "Pandruvada, Srinivas" Cc: "linux-kernel@vger.kernel.org" , "viresh.kumar@linaro.org" , "linux-pm@vger.kernel.org" , "rjw@rjwysocki.net" , "Zhang, Rui" , "linux-acpi@vger.kernel.org" , ibm-acpi@hmh.eng.br, ibm-acpi-devel@lists.sourceforge.net, platform-driver-x86@vger.kernel.org List-Id: linux-pm@vger.kernel.org --lrZ03NoBR/3+SXJZ Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi! > > Let me try v4.9-rc2... that works ok (cpus at the high frequency > > during the kernel build). Unfortunately that sends my cpus to 99C > > temperature range (and eventually forces emergency shutdown). >=20 > This we have to debug. Do you see same line like=A0 > " > /sys/devices/system/cpu/cpu0/cpufreq/bios_limit:1000000 > " > If not we need > to find out why. I'd prefer mails over bugzilla for now... 4.9-rc2 has bios_limit: pavel@duo:~$ cat /sys/devices/system/cpu/cpu0/cpufreq/bios_limit 1833000 and it has thermal zones: /sys/devices/virtual/thermal/thermal_zone0/trip_point_0_temp 127000 /sys/devices/virtual/thermal/thermal_zone0/trip_point_0_type critical /sys/devices/virtual/thermal/thermal_zone1/trip_point_0_temp 97000 /sys/devices/virtual/thermal/thermal_zone1/trip_point_0_type critical /sys/devices/virtual/thermal/thermal_zone1/trip_point_1_temp 92500 /sys/devices/virtual/thermal/thermal_zone1/trip_point_1_type passive =2E.so it should slow down CPU at 92C. So lets push the temperature up a bit... sudo watch cat /proc/acpi/ibm/thermal /sys/devices/system/cpu/cpu0/cpufreq/bios_limit /sys/devices/virtual/thermal/thermal_zone1/temp /sys/devices/system/cpu/cp= u0/cpufreq/cpuinfo_cur_freq temperatures: 98 49 -128 85 28 -128 28 -128 49 58 -128 -128 -128 -128 -128 -128 1833000 95000 1833000 Hmm. bios_limit does not seem to change, even when the temperature is clearly above the trip point. (It is also interestng that acpi/ibm reports bigger temperatures than /sys/devices/virtual/thermal/thermal_zone1/temp . I have seen 103C there.) Pavel --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --lrZ03NoBR/3+SXJZ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlgc8zcACgkQMOfwapXb+vIiBACfR2NCMD3lw8jwCCIxZGIhKdRf 22cAmwbcf1BggSaejszcLv1pFJTYaxLm =F4Fy -----END PGP SIGNATURE----- --lrZ03NoBR/3+SXJZ--