[ashleyw]

I tried, but stopping the world hurts. Reusing stacks helps, but you're fighting the language from the very beginning. It wouldn't be a wise choice for even soft real-time IMO, you may as well just use Python or Ruby if you don't care about stopping the world..

[Game_Ender]

Python doesn't have a STW garbage collector, it uses deterministic reference counting. So while slower than go you won't have random pauses in your server processes due to memory management.

[pcwalton]

Deallocation chains can cause pauses in reference-counted systems.

[schmichael]

Technically it does, but only for handling reference cycles where the reference counter falls apart.