My environment has multiple vCenter servers, with each vCenter instances having 4-7 ESXi hypervisors, and each vCenter instance has about 50-100 guests.
I can detect all of the vms from my probes, and I can monitor them individually, but the when I add a number of them, then I start getting alarms. The monitoring is flaky and unreliable at best even for 15 guests.
I get better performance when I monitor at the ESXi hypervisor host level.
Is there any way to combat tweak this? My scanning interval is 60 seconds. I don't want to monitor less than that.