== sanity test 421d: rmfid en masse ====================== 17:23:44 (1781213024)
 - open/close 1949 (time 1781213036.06 total 10.01 last 194.78)
 - open/close 3656 (time 1781213046.07 total 20.02 last 170.51)
total: 4097 open/close in 23.40 seconds: 175.05 ops/second