the cpu load of encrypted lvm is proportional the the number of blocks accessed and written. btrfs does have a checkpointed monotonic writing that occurs even when the system is completely idle, so this could have something to do with it.
the cpu load of encrypted lvm is proportional the the number of blocks accessed and written. btrfs does have a checkpointed monotonic writing that occurs even when the system is completely idle, so this could have something to do with it.