== sanity test 421d: rmfid en masse ====================== 19:12:04 (1746141124)
 - open/close 1311 (time 1746141136.99 total 10.00 last 131.05)
 - open/close 2685 (time 1746141147.00 total 20.01 last 137.36)
total: 4097 open/close in 29.75 seconds: 137.72 ops/second