Turning on Applications in Phases

Set user expectations.

You might initially deploy a machine by running only a fraction of the services that the machine is ultimately expected to deliver. User difficulties can occur if reservation-based resource management mechanisms are not established when the machine comes online.

For example, the fair share scheduler optimizes CPU utilization. The response times for a machine that run only one application can be misleadingly fast when compared to the response times users see with multiple applications loaded. By using separate pools for each application, you can ensure that a ceiling on the number of CPUs available to each application is in place before all applications are deployed.