Emery Berger [0] at UMass Amherst does great work in this, and it made me very wary of a lot of performance benchmarks. A big source no one considers is alignment, wherein things like the executable name as you mentioned or the username or anything else in the shell environment (which iirc is copied into the first few pages of a process). I think in one of the cases, one of Emery's students with a very long username ran the same application significantly slower because the username pushed the pages of code over a boundary.

[0] https://emeryberger.github.io/