Auto Processor Jitter Control mode

When Processor Jitter Control is configured to run in auto mode, HPE server firmware disables the impact of power management and dynamically adjusts the processor during runtime to eliminate frequency shift induced jitter. The result of running in auto-tuned mode is that the processor will eventually run at the highest frequency that can be achieved where the processor stops making frequency changes to stay within its thermal, power, and core usage constraints. Auto-tuned mode lowers the frequency upon detection of frequency changes caused by the following sources:

• C-state transitions

• AVX induced transitions

• Turbo transitions (due to power, thermal, and core usage)

• Thermal throttling

Jitter control equally affects all cores on all processors.