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0 pointsghaff8y ago0 comments

This document has performance impact estimates from Red Hat Performance Engineering: https://access.redhat.com/node/3307751

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timeu8y ago

As far as I can tell this only measures the impact of the Meltdown bugifx/kernel patch for Intel CPUs. Would be interesting to see the accumulated impact of the mitigation of Meltdown (KPTI) and Spectre (using Retpolines)

ghaffOP8y ago

"The Red Hat Performance Engineering team characterized application workloads to help guide partners and customers on the potential impact of the fixes supplied to correct CVE-2017-5754, CVE-2017-5753 and CVE-2017-5715, including OEM microcode, Red Hat Enterprise Linux kernel, and virtualization patches."

The numbers seem to be for patches on several Intel CPUs for all three of the disclosed vulnerabilities. [reworded]

baq8y ago

they'll be releasing a fix for RHEL 5. hats off to these gentlemen as the patches probably aren't anywhere close to applyable.

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