> GC pauses, Rc<T> does not, it's simply a deallocation by the last reference holder While the last bit is true, it may actually end up having to do lots of wo

> GC pauses, Rc<T> does not, it's simply a deallocation by the last reference holder While the last bit is true, it may actually end up having to do lots of work. Think large object graphs where the last reference to any of it goes out of scope. Also, as a matter of terminology: Rc is a form of garbage collection. It's also a pretty bad general GC strategy at that -- which is why one doesn't just slap an Rc on everything.