== sanity test 421d: rmfid en masse ====================== 10:58:31 (1788533911)
 - open/close 732 (time 1788533926.32 total 10.01 last 73.12)
 - open/close 1438 (time 1788533936.33 total 20.01 last 70.58)
 - open/close 2151 (time 1788533946.33 total 30.02 last 71.25)
 - open/close 2909 (time 1788533956.34 total 40.03 last 75.72)
 - open/close 3722 (time 1788533966.35 total 50.04 last 81.23)
total: 4097 open/close in 54.83 seconds: 74.72 ops/second