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by ghaff 3088 days ago
This document has performance impact estimates from Red Hat Performance Engineering: https://access.redhat.com/node/3307751
2 comments
timeu 3088 days 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)
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ghaff 3088 days 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]

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baq 3088 days 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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