In order to verify the CPU for (Windows / Linux / Unix ) nodes 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 )
You can create Universal Device Poller in order to verify the Value is been returned correctly by the Node for each core .
Launch UDP.
Start > All programs > SolarWinds Orion > Network Performance Monitor > Universal Device Poller
place the OID click Browse MIB Tree
Select your Node and Test in this Node can see 4 CPU is been presented
Now make sure Processor Load is been also presented for each core
Orion will not show that CPU Core in Graph if the load is not been 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.
here is an example of the Node which is not showing the load for each processor and there for Orion will display only graph for single Processor .
we can see the 4 processor however the processor load is only for single core .
and here is the results for this Node ( only showing single CPU )
For more OID's for Vendors please see following KB