== sanity test 421d: rmfid en masse ====================== 21:52:06 (1746150726)
 - open/close 1419 (time 1746150738.74 total 10.02 last 141.66)
 - open/close 2740 (time 1746150748.74 total 20.02 last 132.09)
total: 4097 open/close in 30.01 seconds: 136.52 ops/second