alt Hacker News> You won’t be writing a 3D FPS game engine in Python
While Eve Online isn’t an FPS, it is an MMORPG written in stackless Python, and seems to be doing OK.
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rcxdude • last Thursday at 9:43 AM
They do continuously struggle with CPU load and by all accounts have a mountain range of technical debt from that decision, though.
It was, once.
Nowadays (for about 12 years already I think) there is nothing much stackless about it.
The concept was nice. Stackless and greenlets.. yess. But the way they rewrote C stack just killed caches. Even a naive reimplementation just using separate mmapped stacks and wrapping the whole coro concept under then-Python's threading module instantly gained like 100x speedup on context switch loads like serving small stuff over HTTP.
Edit: Though at this point it didn't much differ from ye olde FreeBSD N:M pthread implementation. Which ended badly if anyone can remember.