I'm interested in monitoring our EC2 instances to ensure we scale up when necessary. Right now we are monitoring idle CPU time as our metric.
We aren't measuring disk I/O as we are not a very disk intensive application.
When running on our own hardware in a datacenter I also usually monitor "load" from the top
command.
My question is:
Does it make sense to monitor "load" on a shared environment such as EC2? If so, how do you interpret the results?