[olliej]

Possibly dumb question - while running are you able to inspect the page mappings? If they’re doing runtime codegen (from the Rosetta pov that’s a jit no matter what), alternatively see if it appears heavy on x87.

The former means you lose a lot of the AOT benefits and caching in Rosetta, the latter is due to Rosetta implementing x87 precisely - so a ton of software floating point.

These are the two things that to me would be most likely to cause that degree of penalty.

[LIV2]

Is there some information on how I can do that? I have no idea what I'm doing here lol