Most of this usage is likely polling FDB tables, especially if you have a lot of VLANs. You can disable this.
Other than that, switches have slow CPUs and we poll a /lot/ of information. Not much you can do about it!
(also, it doens't affect anything, because SNMP is low-priority. CPUs exist to be used, what good does having it sitting idle all the time do?)
adam.
------ Original Message ------ From: "Dash Brousseau" Dash.Brousseau@FundSERV.com To: "'observium@observium.org'" observium@observium.org Sent: 16/10/2014 19:43:26 Subject: [Observium] High CPU SNMP ENGINE
I added Obersvium for one of our workstation cisco switch which has most ports filled up
WS-C3560X-48
12.2(53)SE2
Now the switch gets huge CPU spikes at random times
And it points to SNMP ENGINE
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
263 959593774 37162365 25821 81.62% 19.01% 7.03% 0 SNMP ENGINE
263 960182122 37166258 25834 75.33% 12.91% 5.58% 0 SNMP ENGINE
Is there a way to lower the cpu spikes?
Updated Observium? Update Switch OS? ? Limit polling information?
12.2.53
Observium CE 0.14.4.5229
Apache 2.2.22 (Ubuntu)
PHP 5.4.9-4ubuntu2.4
MySQL 5.5.34-0ubuntu0.13.04.1
SNMP NET-SNMP version: 5.4.3
RRDtool 1.4.7
Dash Brousseau
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