FreeBSD as PF/Router/Firewall dying on the vine

[Michael K. Smith - Adhost]

Hello All:

We have a load balanced pair of PF boxes sitting in front of a whole bunch of server doing all manner of things!  It's been working great up until today when it, well, didn't.  Here's what I see in top -S.

  PID USERNAME       THR PRI NICE   SIZE    RES STATE  C   TIME   WCPU COMMAND
   14 root             1 -44 -163     0K     8K CPU1   0  44:21 88.18% swi1: net
   11 root             1 171   52     0K     8K RUN    0  24:58 53.32% idle: cpu0
   10 root             1 171   52     0K     8K RUN    1  17:44 35.50% idle: cpu1
   24 root             1 -68 -187     0K     8K *Giant 0   5:30 11.62% irq16: em2 uhci3
   23 root             1 -68 -187     0K     8K WAIT   0   1:27  3.08% irq25: em1
   25 root             1 -68 -187     0K     8K WAIT   1   1:16  2.64% irq17: em3

This is 6.3 with Intel 1000 Fiber and Copper interfaces, all using the 'em' driver.  Also, there are 15 VLAN's configured on one of the NIC's for subnet separation.

If anyone has any ideas I'm all ears.  My google-fu is coming up empty with the swi1: net 

Thank You,

Mike

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