Looks like it was because an internal structure in the runtime had a fixed size, but that has changed: https://stackoverflow.com/questions/40943065/golang-why-r

Looks like it was because an internal structure in the runtime had a fixed size, but that has changed: https://stackoverflow.com/questions/40943065/golang-why-runtime-gomaxprocs-is-limited-to-256 https://stackoverflow.com/questions/40943065/golang-why-runt... https://github.com/golang/go/commit/ee55000f6c45d2f5c38d91679def933fdf27c029 https://github.com/golang/go/commit/ee55000f6c45d2f5c38d9167... https://github.com/golang/go/issues/15131 https://github.com/golang/go/issues/15131