Quote Originally Posted by RealNC View Post
There is no cost in BFS. And CK didn't intent to push to mainline simply because mainline does not accept two schedulers; this was made clear years ago.
Yeah, it was made clear years ago that there _is_ a cost in BFS, which only appears in systems with a _lot_ of CPUs, though. The options to prevent this were to either use two schedulers _or_ modify the code in a way CK wouldn't like.