== sanity test 421d: rmfid en masse ====================== 22:16:20 (1746152180)
 - open/close 1042 (time 1746152193.52 total 10.00 last 104.18)
 - open/close 2233 (time 1746152203.54 total 20.02 last 118.92)
 - open/close 3357 (time 1746152213.55 total 30.02 last 112.32)
total: 4097 open/close in 35.82 seconds: 114.36 ops/second