$ time sudo ddrescue -f /dev/sda /dev/sdb log
GNU ddrescue 1.23
Press Ctrl-C to interrupt
     ipos:  160041 MB, non-trimmed:        0 B,  current rate:  59596 kB/s
     opos:  160041 MB, non-scraped:        0 B,  average rate:  38920 kB/s
non-tried:        0 B,  bad-sector:        0 B,    error rate:       0 B/s
  rescued:  160041 MB,   bad areas:        0,        run time:  1h  8m 31s
pct rescued:  100.00%, read errors:        0,  remaining time:         n/a
                              time since last successful read:         n/a
Finished                                     

real    68m33.797s
user    0m8.128s
sys     5m45.980s