Linux 4.1 Through Linux 4.5 Kernel Benchmarks On An Intel Xeon E3 v5
Written by Michael Larabel in Software on 2 March 2016. Page 5 of 5. 2 Comments

If you want to dig through more of these Linux 4.1 through Linux 4.5 kernel benchmark results, see the result file.

As the CPU scaling driver did change from CPUFreq to P-State between Linux 4.2 and 4.3, I did do some CPU frequency scaling driver/governor tests on Linux 4.5 Git to see if that's responsible for the cause of some of the performance slowdowns on Linux 4.3+ kernels for this Xeon E3 v5 system.

With SQLite, the performance was only slightly better with CPUFreq's performance and ondemand modes than P-State.

With OpenArena, P-State performance was the fastest to debunk the idea the CPU scaling driver was the cause of the ~30 FPS performance difference in our earlier kernel tests.

P-State performance led as well for Tesseract.

You can dig through the rest of those results via this secondary result file. If I find out anything more about particularly the graphics performance regressions seen in today's test results, I'll be back with another article and more details from other test systems. Stay tuned.

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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 or contacted via

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