Dan Eble <d...@faithful.be> writes: > On Feb 5, 2020, at 07:59, jonas.hahnf...@gmail.com wrote: >> >> and it seems stable, but I have yet to build a theory why OS thread >> migration actually improves performance… > > Educated guess: The core gets too hot. The OS is not allowed to move > the thread to a cooler core, so it throttles the clock rate instead.
Heat dependent throttling would explain the rather drastic variation in performance since it acts with large latencies. -- David Kastrup
