[non-SUMMARY] Temperatures from 'prtdiag -v' not consistent

Problem: On E450 (Solaris 8 108528-10) the ambient temperature
     reported by 'prtdiag -v' is giving a false and extremely
     high reading intermittently.
  
After some lengthly tests I've determined that this happens
about 4% of the time, with "AMBIENT    70" being reported (as
opposed to 15 or 16). I have NO idea why. One suggestion to
look at kstat(1) since prtdiag uses /dev/kstat. 

I'm writing a simple script to send email alerts using this output,
so for now I will run prtdiag several times comparing the output
before acting on it.

Looks like I'm due for a call to Sun tech support to check the 
sensor probes on the E450.

Thanks to:

Paul Richards
Justin Stringfellow
Hichael Morton

FWIW, here's the simple script I'm using for testing:

#!/bin/csh -f
cat /dev/null >! prtdiag.log

while (1)
   /usr/platform/`uname -i`/sbin/prtdiag -v | /usr/local/bin/grep -A 4 "System 
Temperature" | tee -a prtdiag.log
   date | tee -a prtdiag.log
   sleep 10
end
exit 0

> 
> I am trying to use output from 'prtdiag -v' on an E450 (Solaris 8
> 07/01) to script an automated warning system which will send email
> alerts when the temps are too high.
> 
> I'm just using the output from:
> 
> 	/usr/platform/`uname -i`/sbin/prtdiag -v | \
> 		 grep -A 4 "System Temperature"
> 		 
> The temperatures are absolutely stable:
> 
> 	System Temperatures (Celsius):
> 	------------------------------
> 	AMBIENT    15
> 	CPU 1      40
> 	CPU 3      40
> 
> except once in a great while the Ambient temperature is reported
> as 70 (ALWAYS 70, and in my testing approx once per 456 runs).
> 
> Any ideas? Is it not a good idea to trust prtdiag's output for
> this kind of alert?
> 
> Dave Foster
> 
>   =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>    David Foster    National Center for Microscopy and Imaging Research
>     Programmer/Analyst     University of California, San Diego
>     dfoster@ucsd.edu       Department of Neuroscience, Mail 0608
>     (858) 534-7968         http://ncmir.ucsd.edu/
>   =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> 
>    "The reasonable man adapts himself to the world; the unreasonable one
>    persists in trying to adapt the world to himself.  Therefore, all progress
>    depends on the unreasonable."   -- George Bernard Shaw
> _______________________________________________
> sunmanagers mailing list
> sunmanagers@sunmanagers.org
> http://www.sunmanagers.org/mailman/listinfo/sunmanagers


   << All opinions expressed are mine, not the University's >>

  =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
   David Foster    National Center for Microscopy and Imaging Research
    Programmer/Analyst     University of California, San Diego
    dfoster@ucsd.edu       Department of Neuroscience, Mail 0608
    (858) 534-7968         http://ncmir.ucsd.edu/
  =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

   "The reasonable man adapts himself to the world; the unreasonable one
   persists in trying to adapt the world to himself.  Therefore, all progress
   depends on the unreasonable."   -- George Bernard Shaw
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