Can you explain? I'm (semi) familiar with the heap and definitely hated on first fit and next fit in favor of beat fit. I get that its gonna take significantly less time to find a block to allocate but why does listing files benefit so much from it and not run into a memory usage problem. Unless your splitting the block on allocation but then i would think you still have a peoblem cause you'd have a high degree of external fragmentation.

I typed a lot so i can be better corrected, not because I understand what is going on.