Intel

• The P-state driver (intel_pstate) for the Intel Sandy Bridge processor has been added to UEK R3. In cpufreq terminology, this driver implements a scaling driver with an internal governor.

  To enable the intel_pstate driver on Sandy Bridge or later processors, you can blacklist preferred cpufreq drivers such as acpi-cpufreq by running the following command:

  # echo 'blacklist acpi-cpufreq' > /etc/modprobe.d/cpufreq.conf

  Caution

  Unlike the acpi-cpufreq driver, the intel_pstate driver does not support the CPU power capping feature on Oracle Sun x86 Servers.