== sanity test 421d: rmfid en masse ====================== 22:59:15 (1763351955)
 - open/close 763 (time 1763351968.17 total 10.01 last 76.20)
 - open/close 1575 (time 1763351978.17 total 20.02 last 81.17)
 - open/close 2352 (time 1763351988.19 total 30.03 last 77.61)
 - open/close 3104 (time 1763351998.20 total 40.04 last 75.13)
 - open/close 3851 (time 1763352008.20 total 50.04 last 74.66)
total: 4097 open/close in 53.11 seconds: 77.15 ops/second