It would be great to see performance deltas for AMD CPUs too, especially since Meltdown only effects Intel and AMD patches for Spectre Variant 2 are considered optional. I would also be nice to see a discussion of AMD's ASID and any differences it has with Intel's PCID when when PCID is addressed.
Maybe a better formulated question would be - do the Meltdown changes to kernel impose performance penalty on AMD processors as well (regardless of exploitability)?
Extremely correct. Database and frontend servers are hit pretty hard, nothing in the middle is hit. But neither of those ends is actually running untrusted code, for the most part.
I predict a decline of the "hyperconvergence" server and a return of the usual "database server" + "app server" + "frontend server" combo.
