NetXMS Support Forum

Hello,

if i restart NetXMS i guess it does a Configuration Poll over all Nodes and DCI i have. So, if it does Configuration Polls at start my Core Network get High CPU.
Can i turn of Configuration Polls? Or it is maybe another issue?

Best Regards

Yes, the server will run configuration polls on startup and then in regular intervals as per your Server Configuration, so if the configuration polls are the reason for your high CPU usage, you should see this whenever the server tries to run the next batch of configuration polls, too.
You can't turn Configuration Polls off. I guess you could set very high intervals, but really, you want configuration polls to run to pick up changes on your nodes.

Without knowing just how large your installation is, I can't tell what other reasons there might be for your high CPU usage.
I know a test system of mine (which basically collects the same data as the live one) caused my hardware firewall to collapse as it couldn't handle the packets per second, but that's a 250,000 DCI installation and it was a SOHO firewall. My switches and routers had no problems.

I know that some Cisco IOS versions behave badly when you run an snmpwalk against them. There are several tables mentioned in recent IOS bugfixes which can cause devices to stop responding to snmp queries, lead to high cpu usage and SNMP crashing completely - in fact the fixes also happen to be security fixes. So if your network devices with high CPU are Ciscos, my first suggestion would be to install the very latest IOS.