The Performance Impact Of Spectre Mitigation On POWER9
Written by Michael Larabel in Software on 11 November 2018. Page 4 of 4. 16 Comments

The Golang performance saw some small performance setbacks from this mitigation.

Hopefully you found this reference data helpful if you are interested in maximizing the performance of POWER9 and not concerned about Spectre mitigations due to a tightly controlled environment. If you wish to see how your own POWER, ARM, or x86 hardware compares to the POWER9 performance in the varying states with the Talos II, simply install the Phoronix Test Suite and run phoronix-test-suite benchmark 1811098-SK-TALOSIIDU15. For how this Talos II dual 22-core workstation compares to Intel and AMD HEDT systems, see last week's initial benchmark results while additional follow-up tests will be forthcoming.

Additional Spectre POWER9 benchmarks can be found via all of the raw performance data on

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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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