The Performance Impact Of MDS / Zombieload Plus The Overall Cost Now Of Spectre/Meltdown/L1TF/MDS

Written by Michael Larabel in Software on 18 May 2019 at 11:30 AM EDT. Page 5 of 10. 56 Comments.

The Stress-NG kernel micro-benchmarks obviously are able to show a significant difference in the speed of various operations as a result of the MDS mitigations.

The very basic ctx-clock program is also able to show how much longer context switches are taking as a result of the Microarchitectural Data Sampling mitigations. Most significantly affected was the latest-generation Core i9 9900K.

Memcached is another real-world workload impaired by MDS.

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