I have numerous VMs on three VSphere servers and one VM shows the foillowing behavior. Guest is a fully patched W2K8 server running TMG (ISA) firewall with dual NICs (VMXNet2).
Every 15 minutes the CPU usage heads up to 80% for 60 seconds. If I shutdown the VMWare Tools Service the CPU usage stays down very low.
Any thoughts? Can I just leave the toosl service off? It is the primary exit/entrance for all fo our internet traffic so it will be rarely shutdown/rebooted.