KPTI/KAISER Meltdown Initial Performance Regressions

1 · Brendan Gregg · Feb. 9, 2018, 8 a.m.
The recently revealed Meltdown and Spectre bugs are not just extraordinary issues of security, but also performance. The patches that workaround Meltdown introduce the largest kernel performance regressions I've ever seen. Many thanks to the engineers working hard to develop workarounds to these processor bugs....