== sanity test 421d: rmfid en masse ====================== 22:35:43 (1746153343)
 - open/close 1103 (time 1746153355.78 total 10.01 last 110.21)
 - open/close 2170 (time 1746153365.78 total 20.01 last 106.68)
 - open/close 3294 (time 1746153375.79 total 30.01 last 112.36)
total: 4097 open/close in 37.67 seconds: 108.77 ops/second