Looking At The Linux Performance Two Years After Spectre / Meltdown Mitigations

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Looking At The Linux Performance Two Years After Spectre / Meltdown Mitigations: Last week marked the two year anniversary since the formal public disclosure of the Spectre and Meltdown disclosures. To commemorate that anniversary, I was running some fresh benchmarks of various Intel desktop and server processors with the in-development Ubuntu 20.04 LTS to look at the performance impact today with the default CPU vulnerability mitigations and then again with the mitigations disabled at run-time.