How Orion counts multiple CPUs from a node, and how it collects CPU load data

11/29/2018 10:30 PM

6/30/2021 5:19 PM

This article provides information on how Orion collects load data from each CPU on a node and how Orion counts multiple CPUs on a node.

Orion Platform

Verify and count to see if there is any mismatch between the node and  Orion.

In order to verify the CPU for (Windows / Linux / Unix ) nodes, the  following OID's should return the value for each CPU core:

• 1.3.6.1.2.1.25.3.3.1.1 (hrProcessorFrwID) (Number of CPU Core )
• 1.3.6.1.2.1.25.3.3.1.2 (hrProcessorLoad)  (Each CPU Load )

For Cisco:

• 1.3.6.1.4.1.9.9.109.1.1.1.1.2 (Total Physical Index of CPU )
• 1.3.6.1.4.1.9.9.109.1.1.1.1.7 (Total 1 min for each CPU)
• 1.3.6.1.4.1.9.9.109.1.1.1.1.8 (Total 5 min for each CPU )

For Cisco Extreme Switches:

• 1.3.6.1.4.1.1916.1.1.1.28.0  ( extremeCpuAggregateUtilization )

For Fortigate Devices

• 1.3.6.1.4.1.12356.101.4.1.3.0 (FortigateCPU)
• 1.3.6.1.4.1.12356.101.4.1.4.0  (FortigateMemoryUsage)

See also:

• CPU and memory utilization Object IDs (OIDs) NPM can poll

• Free CISCO-PROCESS-MIB SNMP MIB Download - Free MIB Download - Search MIBs - OiDViEW (ByteSphere ©, available at http://www.oidview.com, obtained on Dec 18, 2018).
• Monitoring CPU utilization on IOS-XR based platforms using SNMP tools - Cisco Support Community (Copyright © 2018 Cisco Systems Inc, available at https://community.cisco.com, obtained on Dec 18, 2018).

To create a Universal Device Poller to verify the Value is been returned correctly by the node for each core .

1. Launch the Universal Device Poller (UDP):
   Start > All programs > SolarWinds Orion > Network Performance Monitor > Universal Device Poller
2. Enter the OID, and click Browse MIB Tree.
   
   
3. Select a node, and click the Test button. 
   In the following example, you can see four nodes:
   

 

How Orion collects load data from each CPU from the Node

Ensure Processor Load is present for each core.

Orion will not show a CPU Core in the graph if the load is not presented by the node for that Core CPU.

Now test the same for hrProcessorLoad, and make sure the value is been returned by the node. 

You should be able to see the result below on node detail page.

If you are running Wireshark the packet should return load for each core.

 

 

Here is an example of the node which is not showing the load for each processor. Therefore Orion will only display a graph for a single Processor .

The 4 processors are shown but the processor load is only returned only for a single core.

and here is the results for this node (only showing the single CPU), as we have not received the process load for the other 3 cores from the Node's MIBs.