RE: Monitoring CPU temperature for small IOC

["Allison, Stephanie" <saa@slac.stanford.edu>]

Hi David,

devIocStats is meant for things that are common across BSPs (for RTEMS and VxWorks) and OS types (for linux, solaris, and darwin).  I think something like CPU temperature, which is monitored differently on different BSPs or flavors of OSs, should be in a different module.  But feel free to look at the devIocStats (especially devIocStats/os/Linux) for ideas of how to read the /proc files and stuff information from them into PVs.  Other people probably have better examples.

Stephanie Allison
SPEAR Controls
saa@slac.stanford.edu

> -----Original Message-----
> From: tech-talk-bounces@aps.anl.gov [mailto:tech-talk-bounces@aps.anl.gov] On Behalf Of
> David Morris
> Sent: Monday, November 29, 2010 5:21 PM
> To: tech-talk@aps.anl.gov
> Subject: Monitoring CPU temperature for small IOC
> 
> Hello all
>    I have a Linux based IOC running on a dedicated small hardware
> platform (Atom CPU in Mini-ITX form factor) We would like this to have
> no moving parts, which means monitoring the CPU state becomes critical
> on hot summer days. Is there support for monitoring CPU temperatures
> using the /proc/acpi service? It seems like this would be something that
> devIocStats could provide, but perhaps it is too system dependent.
> 
>    Is there an easy way to collect information from the IOC host system
> and place it into PVs? Regular reading of /proc/acpi/thermal_zone/THRM
> will give an updated CPU core temperature, but it is not clear to me how
> to place this into a PV.
> 
>    Thanks in advance.
> 
> David
> 
> --
> 
> David Morris                              TRIUMF
> Systems Designer                          4004 Wesbrook Mall
> Ph  604-222-7450                          Vancouver, B.C.
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> 
>