In such an event, those issues would be seen regardless of these tweaks by simply placing a sustained high load on the CPU.ParkControl is a small freeware utility that facilitates tweaking of core parking and CPU frequency scaling settings of Windows power plans. The only way that they could possibly seem to cause some change in behavior is if the PC has overheating issues. These tweaks are entirely safe for any PC that is constructed properly. YMMV, but if we didn’t see real and substantial performance gains after disabling core parking, we wouldn’t have authored this utility. AMD’s secondary logical cores are near full CPUs. Microsoft optimized for Intel’s HyperThreading, which has much less capable secondary cores. This is perhaps due to the dramatic difference in the way AMD processors share (hardware) computational resources between logical cores. In our tests, we’ve found AMD processors benefit most from disabling core parking. However, we find that Windows is often over-aggressive in its core parking, resulting in excess latency as cores are unparked to accommodate bursting loads (the most common type of CPU load). There are many factors that will determine how efficacious it will be for any given system, including the CPU type, application load, and user behavior. And that is exactly the desired tweak for most users: disable parking only for high performance power plans.Įmpirical evidence shows that disabling core parking can make a real difference in system performance. That means you can, for example, disable core parking for the High Performance power plan, but leave it enabled for other plans. The core parking settings in Windows are implemented as parameters of power plans (aka power profiles). A number of complex parameters control when a core should be parked, and Microsoft tuned heavily towards power savings. Their interest was in conserving energy, even if this meant marginally decreasing performance. The problem is that Window’s default power profiles are configured far too aggressively when it comes to core parking, especially on workstations.
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