>>>>> On Tue, 21 Dec 2010 18:12:38 +0100, Timo Schoeler 
>>>>> <[email protected]> said:

TS> A server on which I run net-snmp (it's a CentOS machine, so it runs a 
TS> certainly not-too-recent net-snmp-5.3.2.2-9.el5_5.1 from the packages) 
TS> has a rather big ARP table (>5000 entries). I suspect this the reason to 
TS> have snmpd eat almost 100% CPU when polled.

TS> Is there a (simple) way to circumvent this?

The right way is to introduce a caching mechanism between the main agent
and the arpTable implementation.

Unfortunately, that'll require modifying the code that implements the
arp table rather heavily.

The other solution would be to use VACM to restrict access to the
arpTable so it wouldn't be seen by the manager.  That would at least let
things not thrash, though the manager would lose access to the information.
-- 
Wes Hardaker
Cobham Analytic Solutions

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