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 asacpi-cpufreq
by running the following command:# echo 'blacklist acpi-cpufreq' > /etc/modprobe.d/cpufreq.conf
CautionUnlike the
acpi-cpufreq
driver, theintel_pstate
driver does not support the CPU power capping feature on Oracle Sun x86 Servers.