Here is the output of top -SH from a few hours before heavy utilization. I will post another during peak utilization
$ top -SH
last pid: 26657; load averages: 0.06, 0.04, 0.01 up 27+06:26:31 14:14:06
105 processes: 3 running, 85 sleeping, 17 waiting
Mem: 434M Active, 36M Inact, 123M Wired, 972K Cache, 46M Buf, 2393M Free
Swap: 8192M Total, 8192M Free
PID USERNAME PRI NICE SIZE RES STATE C TIME WCPU COMMAND
11 root 171 ki31 0K 16K CPU1 1 624.4H 99.37% {idle: cpu1}
11 root 171 ki31 0K 16K RUN 0 616.4H 98.97% {idle: cpu0}
12 root -68 - 0K 136K WAIT 1 409:29 0.88% {irq257: bce1}
12 root -68 - 0K 136K WAIT 0 470:10 0.59% {irq256: bce0}
7255 root 56 0 54764K 17504K accept 0 0:04 0.10% php
0 root -68 0 0K 56K - 1 302:02 0.00% {dummynet}
12 root -32 - 0K 136K WAIT 0 142:51 0.00% {swi4: clock}
15569 root 44 0 308M 305M bpf 0 76:24 0.00% tcpdump
14 root 44 - 0K 8K - 0 43:31 0.00% yarrow
20782 root 44 0 5116K 3236K select 0 32:01 0.00% openvpn
40867 nobody 44 0 6580K 3764K select 1 27:08 0.00% dnsmasq
15406 root 44 0 4948K 2540K select 1 24:32 0.00% syslogd
37705 root 44 0 62920K 56756K kqread 0 18:44 0.00% lighttpd
15721 root 44 0 3316K 924K piperd 0 12:15 0.00% logger
34014 root 64 20 3316K 1348K select 1 7:58 0.00% apinger
8 root 44 - 0K 8K pftm 0 5:43 0.00% pfpurge
39181 dhcpd 44 0 8436K 5796K select 0 3:57 0.00% dhcpd
17116 root 76 20 3656K 1464K wait 1 2:24 0.00% sh