Benchmarking LLVM/Clang's New AMD Zen Scheduler Model
Written by Michael Larabel in Software on 20 July 2017. Page 5 of 5. 7 Comments

Znver1 tuning has very little benefit to libjpeg-turbo's performance as measured by tjbench.

The PostgreSQL performance varies from being the same as Clang 4.0 to being slower with the newest compiler code.

Redis sees some slightly increases in performance with the newest Clang compiler.

Apache also sees a very slight increase out of this SVN code that will be released as stable next month.

Overall these results are interesting and there are several cases where LLVM Clang SVN (5.0) is performing better than Clang 4.0 but there is also some cases of regressions, including when making use of znver1 tuning. Stay tuned for similar GCC 8.0 SVN benchmarks.

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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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