Core parking can potentially increase energy efficiency during lower usage. The remaining cores are responsible for the remainder of the workload. Cores that are parked generally do not have any threads scheduled, and they will drop into very low power states when they are not processing interrupts, DPCs, or other strictly affinitized work. The PPM engine chooses a minimum number of cores for the threads that will be scheduled. The processor power management (PPM) engine and the scheduler work together to dynamically adjust the number of cores that are available to run threads. If your system has Intel CPU code name Skylake or greater with HWP (Intel Speed Shift) enabled by default, please follow the link below to find out more about the performance adjustment details and differences Performance adjustment on HWP (Intel Speed Shift) enabled systems CPU Core ParkingĬPU Core parking is a feature that was introduced in Windows Server 2008 R2. Many features mentioned above will be described in greater details in the description below, so if you are interested read on. This application was made to provide help in controlling such factors and reduce the effect of degrading performance when possible. This can be caused by many hard to predict factors, such as system state, availability, CPU state, heat and many many more. Even though these are all positive changes, it sometimes creates a situation where an end user is not getting top performance when it is required (delayed performance boostboost).

Considering significant change in technology and expectations from the hardware, CPU's have gotten a lot of new features such as TurboBoost, SpeedStep, Hyper-Threading and individual core state/s that help to reduce power consumption and heat. However, in the modern world, power consumption sometimes takes a higher priority than performance output. Back in a day, most computers were desktop machines with the main goal for the hardware, to offer absolute best performance and there was no real need for technologies such as SpeedStep, Turbo Boost etc.

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