Linux 4.7 CPUFreq Schedutil Testing vs. P-State

Written by Michael Larabel in Software on 21 May 2016. Page 5 of 5. 19 Comments

Not much of a difference for gamers.

P-State performance at least was performing appropriately for FFTE and HPC Challenge.

Well, those are the initial Schedutil results I have to share today. In a follow-up article will be more tests from another Intel-powered system along with the power metrics. Schedutil generally was performing on par with the other performance/powersave/ondemand ACPI CPUFreq governors. Rather surprising though was how poorly the Intel P-State governor was running on Linux 4.7. Generally with older kernels, P-State with its performance governor is almost universally on par with the ACPI CPUFreq performance configuration, but in these results there were a number of shortcomings shown by P-State. I may end up running some similar tests on this system with Linux 4.6 to see if there are in fact P-State regressions that are present in Linux 4.7 Git. Stay tuned.

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Michael Larabel

Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 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 automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via