== sanity test 421d: rmfid en masse ====================== 10:11:13 (1788444673)
 - open/close 691 (time 1788444687.43 total 10.00 last 69.09)
 - open/close 1476 (time 1788444697.44 total 20.01 last 78.40)
 - open/close 2301 (time 1788444707.45 total 30.02 last 82.42)
 - open/close 3134 (time 1788444717.45 total 40.02 last 83.29)
 - open/close 4012 (time 1788444727.47 total 50.04 last 87.67)
total: 4097 open/close in 51.11 seconds: 80.16 ops/second