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Old 04-19-2009, 07:22 PM   #1
Coallanz
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Registered: Apr 2009
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Unhappy Percentage of CPU utilization using SNMP


Hey folks,

I was wondering if you could help out with a question on SNMP.
It should be pretty simple for you but trust me, I'm having a very hard time to make some sense of it.

I'm trying to basically create a script on Linux to display a message whenever my processor utilization percentage reaches a specified limit.

What I can't understand is how to "read" the info I get from SMNP.
I tried the following lines:

snmpget -v2c -c public 127.0.0.1 ssCpuRawIdle.0

And I observe results like "231273" and "233607". Now, I read somewhere that to get a percentage, I should divide the difference betwen these 2 values by the sum of them. That's where I got myself stuck on.

Could you please give me any hints? Or maybe another MIB I should be querying or anything that gives some light?

Thank you so very much,

Demerson.
 
Old 04-19-2009, 08:50 PM   #2
unSpawn
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ssCpuRawIdle.0 is a 32bits counter. Maybe you're looking for ssCpuIdle.0, a percentage like 'top' would show. Also see ssCpuSystem.0 and ssCpuUser.0.
 
  


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