Hi Wayne,
Assuming that your "top" screenshot is typical then you seem to have no problem at all on CPU or memory. One other thing you might check is that you are not running out of disk space, especially in the temporary directory, as this can cause all sorts of funnies. Try the disk free command:
df -h
If anything is close to 100% full then post it here.
Your graphs show that you are getting lots of events from zenperfsnmp, zentrap and zensyslog but my suspicion is that they are not being processed.
The events subsystem in Zenoss 4.x depends on having RabbitMQ running (should have been installed and setup when you installed Zenoss and should run automatically). This is one of the very few checks you need to do as the root user; try:
rabbitmqctl -p /zenoss list_queues
You should see a bunch of queues which, typically have 0 events queued - see attachment.
If queues are blocked for some reason or if rabbitmq is not running correctly, then your events won't get processed.
Do you see lots of events in the Events Console?
If RabbitMQ is running, the next thing to look at might be $ZENHOME/log/zeneventd.log as it is zeneventd that actually processes the events.
Cheers,
Jane
