[denormalfloat]

Yes, they still need unlimited kernel threads (for liveness reasons). When I asked a few years back about this, go-nuts@ suggested implemented my own rate limiting in application space.

In my case, it was for running Go on a resource constrained Raspberry-PI, where the kernel threads could easily live too long, and use up all memory. The threads were calling read(2) on a network mounted fuse fs, and would last for 30s+.