RE: [tkined] High volume SNMP poller

From: Szokoli Gabor (
Date: Tue Feb 15 2000 - 16:21:16 MET

On Tue, 15 Feb 2000, Keith Plourd wrote:

> Question 6: You will need to be careful about a few things.
> I recently did a study of the "burden" that rapid polling does on CPU
> performance. SNMP daemons responding to queries place a higher burden (via
> the number of lines of code) than, for example, simple system calls.
Lucky for me (and our SUNs) I only poll routers,
I hope those have a more direct and optimised method of answering.
For single-variable PDUs, they must have: I've never seen MRTG bring down
a network when it polls loads of variables from all the routers...

To inspect the the impact of multi-variable getnext requests is a good

> In my situation, I had 30 to 50 hosts to poll in under one second timing. I
> polled each for one OID, processed, then did it again with another OID, etc.
> I maintained close watch over how often I was asking questions of each
> host/architecture type.
Did you make statistics about the CPU utilisation of a polling process on
the poller host itself?
Are there any studies on this available?

Thank you for the ideas:


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