Debian vs. Ubuntu vs. CentOS vs. openSUSE vs. Clear Linux Post-Meltdown Performance

Written by Michael Larabel in Operating Systems on 12 January 2018. Page 4 of 4. 18 Comments

The Python benchmark performance was unchanged with Clear running the fastest and CentOS 7 being the slowest out-of-the-box.

The Apache test profile had issues building on Debian 9 and openSUSE Leap, but between CentOS 7, Clear Linux, and Ubuntu 17.10, the performance hit was noticeable. Ubuntu 17.10 managed to run slightly ahead of Clear Linux in this context.

Fortunately, PHP performance isn't affected by this Spectre/Meltdown mitigation.

That's where the performance stands today with CentOS, Clear Linux, Debian, openSUSE and Ubuntu following their initial patches. It will certainly be interesting to see how the kernel code is optimized over the coming weeks/months as well as seeing the impact when Retpoline is more widely deployed. I suspect we'll see some nice gains once this code matures and it will certainly be re-benchmarked at Phoronix when the time comes.

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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 TwitterLinkedIn,> or contacted via