I have rebuild "check_reload_status" with the git commit "563c70dea12890ac0525c56557ade142d3098285" (Make check_reload_status depends of libevent2 since version was dropped and it's completely backward compatible…). The high load problem remains.
However the lastest shapshot version (from 15-Oct) uses libevent-1.4. Perhaps the library version libevent2 isn't 100% backward compatible?
[2.2-BETA][root@pfSense.localdomain]/root(1): ldd /usr/local/sbin/check_reload_status
/usr/local/sbin/check_reload_status:
libsbuf.so.6 => /lib/libsbuf.so.6 (0x800848000)
libevent-1.4.so.4 => /usr/local/lib/libevent-1.4.so.4 (0x800a4a000)
libc.so.7 => /lib/libc.so.7 (0x800c65000)
I have opened a bug report on redmine:
https://redmine.pfsense.org/issues/3940