[silisili]

> Nowadays, high-performance processors, like those found in desktops, servers, and phones, are massively out-of-order to exploit instruction-level parallelism as much as possible. They perform all sorts of tricks to improve performance.

Relevant quote from Jim Keller: You run this program a hundred times, it never runs the same way twice. Ever.

[krylon]

Heraclitus, mumbling into his beard: "Told you so!"

SCNR

[vlovich123]

A hundred times is not that much except for really cold code paths. It’s probably in the billions if not more and I have to imagine that software level effects typically swamp HW-level effects here. That’s why you see software typically having a performance deviation no greater than ~5-10% unless you’re running microbenchmarks.