I spoke too soon. It came back on 7.2 after about a day.
This is top -S:
last pid: 16105; load averages: 4.61, 5.08, 5.03 up 0+23:57:09 16:24:04
106 processes: 8 running, 82 sleeping, 16 waiting
CPU: 52.2% user, 0.0% nice, 42.9% system, 4.9% interrupt, 0.0% idle
Mem: 59M Active, 11M Inact, 42M Wired, 416K Cache, 26M Buf, 375M Free
Swap: 1024M Total, 1024M Free
PID USERNAME THR PRI NICE SIZE RES STATE TIME WCPU COMMAND
13937 root 1 -8 0 40684K 13892K piperd 0:27 12.79% php
26 root 1 -68 - 0K 8K - 20:05 9.67% em1 taskq
16095 root 1 97 0 3156K 856K RUN 0:00 7.47% tail
16088 root 1 8 0 3492K 1396K wait 0:00 6.88% sh
14832 root 1 -8 0 40684K 13784K piperd 0:16 6.79% php
9109 root 1 -8 0 41708K 15140K piperd 0:58 4.98% php
8421 root 1 4 0 40684K 14364K accept 0:58 4.49% php
25 root 1 -68 - 0K 8K - 13:07 4.20% em0 taskq
12 root 1 -44 - 0K 8K WAIT 4:44 2.39% swi1: net
1164 root 1 4 0 7148K 5096K kqread 8:46 0.29% lighttpd
15715 root 1 44 0 3528K 1924K RUN 0:00 0.29% top
11 root 1 171 ki31 0K 8K RUN 17.9H 0.00% idle: cpu0
27 root 1 -68 - 0K 8K - 11:07 0.00% em2 taskq
28 root 1 -68 - 0K 8K - 3:57 0.00% em3 taskq
13 root 1 -32 - 0K 8K WAIT 3:40 0.00% swi4: clock sio
23 root 1 8 - 0K 8K - 3:11 0.00% thread taskq
15 root 1 44 - 0K 8K RUN 3:03 0.00% yarrow