High CPU on one of several remote pollers

jemertz

This weekend we started getting high CPU on one of our remote pollers. We have migrated most of the polling tasks to other pollers, restarted the processes, and rebooted the system. There are only 289 objects being polled by this poller at this time.

High CPU users include:

SWJobEngineSvc2.exe (This one stays high in the list even when Solarwinds processes are stopped.)

SWJobEngineWorker2.exe
lsass

svchost

Our other pollers are working fine, although this did start shortly after our root SSL certificate expired. Could one device being polled by this, which may have an expired SSL certificate installed somehow be the cause, and if so how would I go about tracking it down? It seems like a stretch to even suggest such a cause, but the timing is close enough that it seems worth investigating.and

NPM version is 11.0.1 and it has been stable for at least 6 months until this started.

polling engine 6.png

jemertz

We found the solution, though not the exact root cause.
Installing all Windows updates and rebooting (again; it wasn't the reboot alone that solved it!) finally allowed us to start the Orion processes without pegging the CPU. Our assumption is that there was a performance patch included, although we have not checked each update's effects.