Benchmarks Of Intel's Latest Linux Microcode Update
Written by Michael Larabel in Software on 27 August 2018. Page 3 of 3. 23 Comments

The Hackbench Linux kernel benchmark did see slightly lower performance with the newest Intel CPU microcode, but it wasn't any huge difference -- and less than the L1TF patches itself.

In the benchmarks run over the weekend, the latest Intel microcode files for August (taking Xeon Scalable CPUs to 0x200004d appeared to have only minimal impact on the system performance... Mostly in I/O cases were there some slight differences in performance, but nothing overly shocking and not as bad as the L1TF Linux kernel mitigation itself -- see those benchmarks for all the details. Going into this microcode comparison I was expecting much more volatile results given their short-lived benchmark restriction, but it looks like it may have just been an overzealous Intel lawyer who thought it would be a good idea to forbid benchmarking and further lock-down their microcode license...

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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 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 OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.


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