How does Capacity Planner handle x86 processors that have the hyperthreading feature enabled?
Capacity Planner detects hyperthreading based on the model for the server sent to Capacity Planner. If the chassis model is sent, Capacity Planner checks to see if the hyperthread flag has been turned on for that model in the information warehouse. If the hyperthread flag is on, Capacity Planner ignores half of their CPUs. If they send four, Capacity Planner only enters two into the system, assuming that they did not go through the process to turn hyperthreading off. Capacity Planner flags a chassis as being hyperthreaded when it is either manually entered or detected by comparing the maximum number of CPUs allowed in the chassis to the number of CPUs being reported. If a chassis can only have four processors, but inventory is sent showing eight processors for that model, Capacity Planner turns on the hyperthread flag for that model.
