[no-bugs]

> The cost of virtual cals is usually due to missed optimizations and the possibility of misprediction.

Yep (plus one L1 read to get that VMT pointer). And the OP is pretty much consistent with this (at least within declared "indications of the order of magnitude" precision).

[gpderetta]

No, the load is not on the critical path, so it is not normally part of the overhead.