run 1 (no pressure): 4 procs x 90s on /boot: ~583K lookups, 0 "[diagnostic] EAGAIN on ncp" prints
run 2 (kern.maxvnodes=4000, 6 procs x 120s): ~1.8M lookups, 0 prints
(reading dmesg as unpriv user works: security.unprivileged_read_msgbuf=1)