HP Power Capping and HP Dynamic Power Capping for
ProLiant servers
Technology brief, 2
nd
Edition
Introduction ......................................................................................................................................... 3
Processor P-states ............................................................................................................................. 4
Clock throttling................................................................................................................................. 4
How power capping functions ............................................................................................................... 5
Active power reallocation ............................................................................................................... 10
Opting out servers .......................................................................................................................... 10
Time-of-day power capping ............................................................................................................. 21
Subtleties of power capping ................................................................................................................ 22