ULE Scheduler

[Andreas Nilsson]

On Fri, Jun 8, 2012 at 2:29 AM, Momchil Ivanov <momchil at xaxo.eu> wrote:

> At Fri, 8 Jun 2012 00:54:15 +0200,
> Martin Sugioarto wrote:
> >
> > [1  <text/plain; UTF-8 (quoted-printable)>]
> > Am Thu, 07 Jun 2012 03:01:07 +0200
> > schrieb Момчил Иванов <momchil at xaxo.eu>:
> >
> > > Is there some remedy?
> >
> > Hi,
> >
> > I remember this series, I've had a T60p and when I compiled world, I
> > placed a fan in front of it to cool it down from 100°C. The difference
> > with T60p was that it simply shut off reaching 101°C.
> >
> > The problem is the hardware, not FreeBSD. T60p and obviously T60, too,
> > was made by some crazy people who had the idea to cool the CPU und the
> > GPU under the same heat sink. The funny thing is that the GPU is
> > running at 70°C all the time, because FreeBSD does not implement
> > voltage regulation for the VGA chipset. The result is that the GPU
> > warms up the CPU to at least 55°C while idle.
> >
> > If you want to have a cooler CPU implement power saving for the Radeon
> > chipset there.
> >
> > Martin
> > [2 signature.asc <application/pgp-signature (7bit)>]
> >
> Hi,
>
> well, that is not true, I have been using the laptop since more than 4
> years without any problems. The thing is that yesterday I had it
> docked and that seems to raise the idle temperature by about 10°C, so
> I get docked somewhere about 42°C when doing nothing computationally
> intensive:
>
> hw.acpi.thermal.tz0.temperature: 50.0C
> hw.acpi.thermal.tz1.temperature: 42.0C
> dev.cpu.0.temperature: 42.0C
> dev.cpu.1.temperature: 42.0C
>
> So I probably have to shift things around to give the dock a bit more
> room. However, the dust, the thermal liquid and the screws seem to
> have contributed to the temperature increase too. The GPU (Nvidia
> Quadro NVS 140M) might be an issue, nvidia-settings says 58°C (I am
> not running any fancy graphics) and I've seen it getting over
> 100-120°C before, when I am doing some opengl stuff. With the latter I
> mean, that I know how to intentionally kill it.
>
> Anyway, I have solved my problem and that seems to not be related to
> ULE at all. However, it was still surprising for me to find out how
> ULE schedules computationally intensive tasks.
>
> Regards,
> Momchil
>

My t61p also had overheating problems with fbsd, but never in linux. For me
the fan control was somewhat broken: I had to turn off auto-mode and set
max myself to get any heavy usage out of it.

You might want to check that as well.

Regards
Andreas