== sanity test 421d: rmfid en masse ====================== 10:04:04 (1761228244)
 - open/close 785 (time 1761228258.14 total 10.01 last 78.45)
 - open/close 1605 (time 1761228268.14 total 20.01 last 81.97)
 - open/close 2434 (time 1761228278.15 total 30.02 last 82.84)
 - open/close 3307 (time 1761228288.17 total 40.03 last 87.18)
total: 4097 open/close in 49.18 seconds: 83.30 ops/second