== sanity test 421d: rmfid en masse ====================== 16:42:28 (1788468148)
 - open/close 911 (time 1788468162.99 total 10.02 last 90.91)
 - open/close 1795 (time 1788468173.00 total 20.03 last 88.36)
 - open/close 2621 (time 1788468183.00 total 30.03 last 82.52)
 - open/close 3381 (time 1788468193.02 total 40.05 last 75.91)
total: 4097 open/close in 49.24 seconds: 83.20 ops/second