== sanity test 421d: rmfid en masse ====================== 22:00:20 (1788919220)
 - open/close 845 (time 1788919233.87 total 10.01 last 84.45)
 - open/close 1635 (time 1788919243.88 total 20.02 last 78.92)
 - open/close 2306 (time 1788919253.88 total 30.02 last 67.05)
 - open/close 3261 (time 1788919263.89 total 40.03 last 95.47)
total: 4097 open/close in 49.35 seconds: 83.02 ops/second