More interesting than its support of Btrfs features is its unusual statistical approach: > btdu is a sampling disk usage profiler […] Pick a random point on th

More interesting than its support of Btrfs features is its unusual statistical approach: > btdu is a sampling disk usage profiler […] Pick a random point on the disk then find what is located at that point […] btdu starts showing results instantly. Though wildly inaccurate at first, they become progressively more accurate the longer btdu is allowed to run.