They were interested in saving energy, even if it meant slightly lower performance. The problem is that the default Windows power profile is configured aggressively, especially with respect to parking cores on workstations. This technology is very similar to frequency scaling in that it tries to throttle the CPU when it is idle. When the CPU load increases again, the disabled cores are re-enabled. Core parking dynamically disables CPU cores to save power when idle. Core ParkingĬore parking is a hibernation (C6) state supported by most new x86 processors and newer editions of Windows. Bitsum developed ParkControl because core parking settings are hidden in Windows, but can make such a large difference on performance, particularly when there are bursting CPU bound loads (the most common type).
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