One downside with this setting is that Intel Turbo Boost is disabled because this technology relies on P- and C-states (which are disabled).

With I/O latency sensitive workloads you can consider to High Performance setting, which will prevent P-states and C-states beyond C1. In VMware you could set how the P-states should be used by adjusting the Power Management setting: My recommendation is to let the Power Management setting control this setting.

The OS must support ACPI (Windows and ESXi support ACPI). Generally you would let the OS decide how the P-states should be used. The P-states can be controlled by the hardware (HW_ALL ) or by the OS (SW_ANY or SW_ALL ). P-states don’t have an impact on performance because it adjust its state to the utilization of a processor. The higher the P n state the lower the frequency beecomes and the less power the processor will consume.įor more information click here (Intel blog) P-states (through ACPI) are states of a processor were they can lower the frequency and reducing power consumption. This option defines how the P-states will be supported. My recommendation is to set this option to Disable for general workloads, only for VDI you would E nable this settings. By enabling this option you may improve system performance but at the sacrificies of power consumption. This option controls the way may (or may not) a processor may drop below it’s maximum non-turbo frequency (essentially disabling P-states). My recommendation is to set this option to Auto. The APIC controls the interrupts on a microprocessor, newer versions of this APIC were developed by extending the addressability of the processors.”Local x2APIC” is such kind of controller. It should be “local x2APIC” (standing for x2 Advanced Programming Interrupt controller)! Local X2 Application Policy Infrastructure Controller (APIC): << WRONG NAME!! This option allows data from I/O devices to be placed directly in the processor cache increasing I/O performance. This option will prevent malicious code from bufferflow attacks by classifying memory areas were code can be executed.ĭepending on the support of operating system you should Enable this option.

Esxi how to enable turbo boost