== sanity test 421d: rmfid en masse ====================== 10:59:38 (1790780378)
 - open/close 780 (time 1790780394.06 total 10.00 last 77.98)
 - open/close 1502 (time 1790780404.07 total 20.01 last 72.13)
 - open/close 2317 (time 1790780414.07 total 30.01 last 81.50)
 - open/close 3178 (time 1790780424.08 total 40.02 last 86.05)
 - open/close 3969 (time 1790780434.11 total 50.05 last 78.86)
total: 4097 open/close in 52.10 seconds: 78.63 ops/second