== sanity test 421d: rmfid en masse ====================== 01:37:30 (1783143450)
 - open/close 1888 (time 1783143462.26 total 10.00 last 188.80)
 - open/close 3521 (time 1783143472.27 total 20.01 last 163.18)
total: 4097 open/close in 22.81 seconds: 179.58 ops/second