Comment by bironran

It’s a slop alright. But it also missed the next mainstream iteration which is Java virtual threads / Goroutines. Those do away with coloring by attacking the root of the problem: that OS threads are expensive.

Sure, it comes with its own issues like large stacks (10k copy of nearly the same stack?) and I predict a memory coloring in the future (stack variables or even whole frames that can opt out from being copied across virtual threads).