== sanity test 421d: rmfid en masse ====================== 17:00:03 (1760130003)
 - open/close 1272 (time 1760130015.63 total 10.01 last 127.13)
 - open/close 2518 (time 1760130025.64 total 20.01 last 124.49)
 - open/close 3687 (time 1760130035.65 total 30.02 last 116.82)
total: 4097 open/close in 33.19 seconds: 123.44 ops/second