The kernel is custom built, with the following added (relevant) options:
options PMAP_SHPGPERPROC=4096
options ACCEPT_FILTER_HTTP
/boot/loader.conf:
kern.maxproc=32768
kern.ipc.shmmni=4096
kern.ipc.shmseg=2048
kern.ipc.semmns=960
kern.ipc.semmni=160
kern.ipc.semume=160
kern.ipc.semmnu=480
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/firewalls-pf.html
ACCEPT_FILTER_DATA
kldload accf_http 한 뒤
kldstat로 확인해도 됩니다요…. top에 보면
kqread등의 상태가 있으면 FreeBSD의 Kqueue를 쓴다는 얘기
/boot/loader.conf
accf_data_load=”YES” # Wait for data accept filter
accf_http_load=”YES” # Wait for full HTTP request accept filter