[lm-sensors] How to get lm-sensors to see eight processors instead of four (just installed second quad-core Xeon)

[Michael Darling]

Thanks for your response!

I downloaded (I think) the latest sensors-detect script, it was 181469
bytes.  The stock 2.10.0-3.1 sensors_detect was only finding the
"smsc47b397" chip, but the new one also found "coretemp" and "to-be-written"
for "Chip Intel AMB FB-DIMM thermal sensor".

I am running CentOS 5.1 (more or less RHEL 5.1).  The latest kernel in the
RHEL 5.1 yum repo is unfortunately 2.6.18-53.1.1.4.el5.  "modprobe coretemp"
failed, which makes sense because "locate coretemp" finds nothing on my
system.

Is there a way I can add the coretemp driver, without upgrading to an
outside-repo kernel?  If so, where do I download it, and how do I install
it?

On Mon, Apr 21, 2008 at 7:37 PM, Darrick J. Wong <djwong at us.ibm.com> wrote:

> On Mon, Apr 21, 2008 at 05:37:44PM -0400, Michael Darling wrote:
> > I have a HP XW8400 workstation.  It came with a single Intel Xeon E5335,
> and
> > I correctly got lm_sensors installed so I could see the four processor
> > temperatures.  (The E5335 is a quad xeon chip.)
> >
> > I just installed a second Xeon E5335.  /proc/cpuinfo correctly sees 8
> > logical CPUs, however lm_sensors is still reporting temperatures for
> only 4
> > of those logical CPUs.  When I initially installed the machine on a
> single
> > Xeon, I got lm_sensors working correctly, but can't figure out now how
> to
> > expand it from reporting on 4 CPUs to 8.  My experience with lm_sensors
> is
> > extremely limited, so any advice would be much appreciated!
>
> Hmm... if you're running a recent kernel (2.6.23+, I think?) try the
> coretemp driver to read the temperature sensors that are on the CPU
> die.
>
> --D
>
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