> RC may turn reads into writes, but of course, GC ends up having to go through literally every piece of memory ever from bottom to top once in a while. > RC l

> RC may turn reads into writes, but of course, GC ends up having to go through literally every piece of memory ever from bottom to top once in a while. > RC limits itself to modifying only relevant objects, whereas GC reads all objects in a super cache-unfriendly way. Yes, an atomic read-modify-write is worse than a read, but it's not worse than a linked-list traversal of all of memory all the time. This is patently untrue. Contemporary GCs have had card marking/scanning for 10+ years now.