It relates to the behavior of the garbage collection scheme used by dalvik which is a mark and sweep approach. When the GC runs, that’s all the VM is doing. It’

It relates to the behavior of the garbage collection scheme used by dalvik which is a mark and sweep approach. When the GC runs, that’s all the VM is doing. It’s pointed out that a generational garbage collector would be more efficient allocating memory presumably there is a trade off in terms of the overall memory footprint.