Intel Skylake CPUFreq vs. P-State Scaling Benchmarks On Linux 4.5
Written by Michael Larabel in Intel on 22 February 2016 at 08:23 PM EST. 9 Comments
INTEL --
For those curious about the performance impact between the CPUFreq and P-State scaling drivers and the different scaling governors when using an Intel Core i5 "Skylake" CPU with the latest Linux 4.5 kernel, here are some fresh benchmarks.

Over the weekend on a Core i5 6600K Skylake system running Linux 4.5 Git I compared P-State powersave, P-State performance, CPUFreq ondemand, CPUFreq performance, CPUFreq powersave, and CPUFreq conservative options.

Following that, a wide range of benchmarks were run while monitoring the performance. Only the raw performance was measured. If you are curious about the performance-per-Watt or overall AC system power consumption differences, see some of our older results. I didn't do any power consumption results as this was just some quick weekend benchmarking for a one-page Phoronix article comparison (plus my lone USB WattsUp Pro power meter was busy with another system).

By now you shouldn't be too surprised by these CPUFreq vs. P-State results.

P-State performance tends to be the best choice for Linux gamers.

CPUFreq powersave meanwhile yields very slow performance at the cost of power savings.


If you want to see more of these fresh Intel Skylake benchmark results from the Linux 4.5 development kernel, head on over to this OpenBenchmarking.org result file.
About The Author
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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