From: "Pandruvada, Srinivas" <srinivas.pandruvada@intel.com>
To: "pavel@ucw.cz" <pavel@ucw.cz>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Zhang, Rui" <rui.zhang@intel.com>,
"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
"platform-driver-x86@vger.kernel.org"
<platform-driver-x86@vger.kernel.org>,
"rjw@rjwysocki.net" <rjw@rjwysocki.net>,
"viresh.kumar@linaro.org" <viresh.kumar@linaro.org>,
"ibm-acpi-devel@lists.sourceforge.net"
<ibm-acpi-devel@lists.sourceforge.net>,
"ibm-acpi@hmh.eng.br" <ibm-acpi@hmh.eng.br>,
"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>
Subject: Re: v4.8-rc1: thinkpad x60: running at low frequency even during kernel build
Date: Fri, 4 Nov 2016 21:13:00 +0000 [thread overview]
Message-ID: <1478293976.1268.15.camel@intel.com> (raw)
In-Reply-To: <20161104204439.GA2581@amd>
On Fri, 2016-11-04 at 21:44 +0100, Pavel Machek wrote:
> 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).
> >
> > This we have to debug. Do you see same line like
> > "
> > /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
>
It will not act if there is no binding information. Do you have more
files in this folder?
grep -r . * in /sys/class/thermal will be helpful.
> ..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/cpu0/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.)
Probably they are showing package and core temperature or have a
different sampling interval.
Try enabling thermald service in Debian. it has access to more knobs to
control thermals.
Thanks,
Srinivas
next prev parent reply other threads:[~2016-11-04 21:13 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-04 8:38 v4.8-rc1: thinkpad x60: running at low frequency even during kernel build Pavel Machek
2016-11-04 8:58 ` Pavel Machek
2016-11-04 9:10 ` Viresh Kumar
2016-11-04 9:26 ` Pavel Machek
2016-11-04 9:31 ` Viresh Kumar
2016-11-05 18:21 ` Henrique de Moraes Holschuh
2016-11-05 19:24 ` Thinkpad power management (was Re: v4.8-rc1: thinkpad x60: running at low frequency even during kernel build) Pavel Machek
2016-11-04 14:05 ` v4.8-rc1: thinkpad x60: running at low frequency even during kernel build Pandruvada, Srinivas
2016-11-04 20:44 ` Pavel Machek
2016-11-04 21:13 ` Pandruvada, Srinivas [this message]
2016-11-05 8:42 ` Pavel Machek
2016-11-05 17:46 ` Henrique de Moraes Holschuh
2016-11-05 19:36 ` Pavel Machek
2016-11-06 3:45 ` Henrique de Moraes Holschuh
2016-11-04 22:16 ` Pavel Machek
2016-11-04 23:20 ` Pandruvada, Srinivas
2016-11-05 13:20 ` Pavel Machek
2016-11-05 13:33 ` Pandruvada, Srinivas
2016-11-05 13:53 ` Pavel Machek
2016-11-05 14:04 ` Pavel Machek
2016-11-05 14:19 ` Pandruvada, Srinivas
2016-11-05 15:34 ` Pavel Machek
2016-11-05 13:37 ` Pavel Machek
2016-11-05 13:55 ` Pandruvada, Srinivas
2016-11-05 14:21 ` Pavel Machek
2016-11-05 20:31 ` Pavel Machek
2016-11-09 11:34 ` thinkpad x60, T40p: overheat with v4.9-rc4 (was Re: v4.8-rc1: thinkpad x60: running at low frequency even during kernel build) Pavel Machek
2016-11-14 19:03 ` 6ea8c546f3655 breaks thermal management on thinkpad x60 and t40p Pavel Machek
2016-11-14 19:54 ` Rafael J. Wysocki
2016-11-05 18:04 ` v4.8-rc1: thinkpad x60: running at low frequency even during kernel build Henrique de Moraes Holschuh
2016-11-05 19:56 ` Pavel Machek
2016-11-05 11:21 ` Zhang Rui
2016-11-05 13:10 ` Pavel Machek
2016-11-05 12:22 ` Pavel Machek
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