== sanity test 421d: rmfid en masse ====================== 09:31:53 (1790947913)
 - open/close 881 (time 1790947927.62 total 10.00 last 88.06)
 - open/close 1786 (time 1790947937.62 total 20.01 last 90.49)
 - open/close 2632 (time 1790947947.62 total 30.01 last 84.58)
 - open/close 3527 (time 1790947957.63 total 40.02 last 89.41)
total: 4097 open/close in 46.19 seconds: 88.70 ops/second