== sanity test 421d: rmfid en masse ====================== 19:46:24 (1746143184)
 - open/close 1542 (time 1746143196.13 total 10.01 last 154.12)
 - open/close 2879 (time 1746143206.14 total 20.01 last 133.62)
total: 4097 open/close in 28.87 seconds: 141.90 ops/second