Disk space used not going down after clearrange

@ajbeamon - In case of ssd storage engine if I need to reclaim storage space what is the fastest way of doing so? As suggested in this post of yours can I just change the knob_cleaning_interval or there is some other way to reclaim the disk space quicker? I can stop all the read and writes to the fdb cluster when I am performing this operation.

Fdb Version 6.2.20.