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Summary: This was on Linux using kernel mitigations. The performance impact can be very significant to some workloads, like databases and compression, but most users likely will not notice any impacts.

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[-] 0v0@sopuli.xyz 3 points 1 year ago

The bot missed the remaining 7 pages and the result of the benchmark:

"Overall it comes down to what workloads you are engaged in whether you may notice any performance difference when upgrading your Linux kernel (or otherwise being patched for Inception on your given OS) on an AMD Zen desktop or server. For the most part users are unlikely to notice anything drastic, aside from some sizable database performance hits in a few cases. It's unfortunate seeing some of these regressions due to the Inception mitigation but ultimately is unlikely to really change the competitive standing of AMD's latest wares on Linux. Most of the prior AMD CPU security mitigations have also not resulted in any performance degradation, so this Inception mitigation difference is a bit rare. It also was announced on the same day as Intel Downfall where there was again a sizable hit to Intel CPU performance."

this post was submitted on 18 Aug 2023
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