[cyclonereef]

I've worked with plenty of companies that provide some sort of hosting for enterprise customers, and the number of times I've seen even senior admins use only CPU Utilisation and Memory In-Use investigating an issue is disheartening. And given that CPU Utilisation is an aggregate of all time != CPU idle, the same utilisation number can mean very different underlying system states.

There's something like a dozen different CPU metrics that can be referred to by the OS alone.