As memory use goes up, GC takes more time. But with more RAM available, GC (under certain strategies) can take less time. It's triggered less often, but each ti

As memory use goes up, GC takes more time. But with more RAM available, GC (under certain strategies) can take less time. It's triggered less often, but each time it's triggered, it only copies the (no-larger-than-before) 'live' set. What kind of GC does HN/ARC use?