Newer Intel CPUs have MSR tuning knob called MSR_IA32_ENERGY_PERF_BIAS which can be used for controlling bias to performance or powersave. Previously, Tuned didn't know how to control the MSR_IA32_ENERGY_PERF_BIAS.
The MSR_IA32_ENERGY_PERF_BIAS wasn't modified in the Tuned profiles, which could lead to negative impacts on performance / powersave.
The code for controlling the MSR_IA32_ENERGY_PERF_BIAS was added into Tuned.
If kernel-tools package is installed, Tuned now modifies the MSR_IA32_ENERGY_PERF_BIAS according to selected profile.