On Sat, 2018-09-08 at 08:38 +1000, Michael D. Setzer II wrote:
The jetcat-mod is a filter that monitors the process of the copy, and
the info every 5 seconds with this option. The dialog then displays a running
graph of the progress along with estimated speed. In the clone case there is
no compression, so the rate is generally the physical speed of disk. With
image files that are compressed, the effective speed can vary greatly
depending on how much the data was compressed. Mostly just gives
progress versus just waiting for the dd command to finish.
The only results I see from Google refer to actual jet engines, so I
ask again, where does this come from?