I would tender a guess that since go is compiled to native code, it uses a lot more syscalls to manage its threads. Stackless probably does a lot more of the m

I would tender a guess that since go is compiled to native code, it uses a lot more syscalls to manage its threads. Stackless probably does a lot more of the management inside the vm, and doesn't need to make as many (or any) syscalls to do so. This is just a guess from someone that knows nothing about either (stackless does run in a vm, right?), so take many large grains of salt.