I have seen the same behavior with BTRFS. We create nightly snapshots on our servers then prune older snapshots. Watching 'top' output shows a 5-8 second dela

I have seen the same behavior with BTRFS. We create nightly snapshots on our servers then prune older snapshots. Watching 'top' output shows a 5-8 second delay until the BTRFS cleanup agent starts. The agent could take many seconds (20?) to completely remove the old snapshots