== sanity test 421d: rmfid en masse ====================== 20:24:20 (1746145460)
 - open/close 1050 (time 1746145473.55 total 10.01 last 104.89)
 - open/close 2085 (time 1746145483.55 total 20.01 last 103.48)
 - open/close 2985 (time 1746145493.56 total 30.02 last 89.92)
 - open/close 3891 (time 1746145503.56 total 40.03 last 90.54)
total: 4097 open/close in 42.13 seconds: 97.24 ops/second