Intel Haswell Iris Graphics Don't Change Much On Latest Kernels
Written by Michael Larabel in Intel on 27 October 2015 at 09:24 AM EDT. Add A Comment
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If you are an Intel Haswell ultrabook user and curious whether the Iris Graphics are any faster when switching to one of the newer versions of the Linux kernel, here are some benchmarks.

In not having benchmarked Haswell Iris Graphics on Linux in a few months, using an ASUS Zenbook I ran some fresh kernel comparison tests to see if anything has changed. With Ubuntu 15.10 and its Mesa 11.0.2 user-space driver package, I then benchmarked the Linux 4.1, 4.2 and 4.3 Git kernels from the Ubuntu Mainline Kernel repository.

Note that with Linux 4.3 the default scaling governor for the P-State driver for this Core i7 4558U ultrabook seems to switch from performance to powersave.

In some tests there were slight movements between Linux 4.1 and 4.3, but overall, no big changes. You can see all of my Intel OpenGL Linux results in full via this OpenBenchmarking.org result file. It's not too surprising the Iris Graphics 5100 performance hasn't changed much on recent kernels given that the open-source Haswell support is already quite mature and the Intel OTC developers have been focusing much of their time lately on Skylake and Broxton graphics work.

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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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