== sanity test 421d: rmfid en masse ====================== 20:17:10 (1746145030)
 - open/close 1822 (time 1746145042.21 total 10.00 last 182.12)
 - open/close 3625 (time 1746145052.22 total 20.01 last 180.22)
total: 4097 open/close in 22.34 seconds: 183.41 ops/second