[LAU] Problems with real time kernel, thermal throttling and cpu freq governors.

[Rafael Vega]

Thanks for all the replies! I'll take the discussion to the linux-rt-users
list :)

On Thu, Sep 25, 2014 at 8:04 AM, Joakim Hernberg <jhernberg at alchemy.lu>
wrote:

> On Wed, 24 Sep 2014 22:13:48 -0500
> Rafael Vega <email.rafa at gmail.com> wrote:
>
> > I'm re-posting this issue here since there are more real-time kernel
> > users here than in other lists/forums and I'm hoping to get attention
> > into this issue.
> >
> > In short, when running the RT kernel from Debian Jessie repos
> > (3.14-2-rt-amd64), the scaling governor cannot be changed and the
> > system hangs if the cpu temperature reaches the thermal throttling
> > threshold.
> >
> > More info here:
> > http://forums.debian.net/viewtopic.php?f=5&t=117613&p=554270#p554270
> >
> > Has anyone experienced this issue? Anyone else running that kernel
> > version from the Debian repos? Any other RT kernels for Debian out
> > there that I could test?
>
> I can confirm both issues on the archlinux 3.14-rt kernel.
>
> Maybe best to seek a resolution on the linux-rt-users mailing list.
>
> If you have a recent Intel cpu, you might be able to work around the
> problems using the /dev/cpu_dma_latency
> and /sys/devices/system/cpu/intel_pstate interfaces.
>
> --
>
>    Joakim
>



-- 
Rafael Vega
email.rafa at gmail.com
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