Linux 4.1 Offers Potentially Dazzling Performance
Written by Michael Larabel in Software on 6 June 2015. Page 2 of 2. 19 Comments

Before getting too excited, it doesn't seem that the performance is dramatically faster for all Intel CPUs but is likely some combination of the processor/chipset and other factors. Over on continue to be daily performance benchmarks of the Linux kernel Git, however, when looking at the results for the time since the 4.1 merge window, these particular systems didn't seem to have any surprising jumps as was seen by this system outside of the server room.

Long story short, there are a lot of great features coming for Linux 4.1, including some performance improvements, but that's largely dependent on the hardware. For the select Intel Atom hardware that's faster under Linux 4.1, that's due to Intel tuning the P-State scaling driver while for the i7-5960X desktop difference, that change I am unsure about at this time but will be further investigated.

If you would like to see more of this investigative testing continue and adding more systems to the test farm, please consider subscribing to Phoronix Premium or making a PayPal tip - of which, it's dedicated to adding more systems to the daily Linux benchmarking plus the related expenses. More systems are critical to have a very diverse spectrum of systems running these benchmarks daily to uncover the various corner cases and isolated changes.

Looking forward to Linux 4.2 there should be Haswell and Broadwell power improvements, new graphics drivers, and faster SSD performance with CFQ. Stay tuned to Phoronix for updates and open-source Linux benchmarks on Facebook and Twitter. Feedback/suggestions on testing, etc, welcome as always.

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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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