Имеется машина DELL 1950 с нагрузкой ~300мбит. Сетевые bce. Большая нагрузка на процессор. Порядка 50-60%. Поллинг не включен, т.к. не нашел в мануале поддержки драйвера bce. Все данные ниже. Как еще можно оптимизировать тазик?

# cat /var/run/dmesg.boot | grep CPU
CPU: Intel(R) Xeon(R) CPU            5160  @ 3.00GHz (2995.54-MHz K8-class CPU)
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs

# cat /var/run/dmesg.boot | grep broad
bce0: <Broadcom NetXtreme II BCM5708 1000Base-T (B2)> mem 0xf4000000-0xf5ffffff irq 16 at device 0.0 on pci8
bce1: <Broadcom NetXtreme II BCM5708 1000Base-T (B2)> mem 0xf8000000-0xf9ffffff irq 16 at device 0.0 on pci4

# uname -a
FreeBSD billing 8.2-STABLE FreeBSD 8.2-STABLE #0: Fri Sep 16 10:03:58 UTC 2011     morfey@border:/usr/obj/usr/src/sys/kernel_15.09.2011  amd64

#top -SI
last pid: 91450;  load averages:  1.36,  1.65,  1.66   up 79+01:20:51  19:15:38
182 processes: 8 running, 152 sleeping, 4 zombie, 18 waiting
CPU:  4.7% user,  0.0% nice, 14.6% system, 27.4% interrupt, 53.3% idle
Mem: 1242M Active, 5163M Inact, 1182M Wired, 168M Cache, 827M Buf, 154M Free
Swap: 13G Total, 13G Free

  PID USERNAME    THR PRI NICE   SIZE    RES STATE   C   TIME   WCPU COMMAND
   11 root          4 171 ki31     0K    64K RUN     0 6223.2 223.63% idle
   12 root         19 -68    -     0K   304K CPU1    1 572.3H 120.90% intr
2256 root          8  44  -19   161M   114M select  0 239.2H 31.64% stargazer
    0 root          9 -68    0     0K   128K CPU2    2 263.7H 21.97% kernel
42721 root          1  45    0 54132K 20524K bpf     1 875:22  1.46% bandwidthd
42720 root          1  44    0   129M   101M bpf     0 500:01  0.88% bandwidthd
42718 root          1  44    0 84852K 67012K bpf     1 398:59  0.49% bandwidthd
42719 root          1  44    0   103M 87368K bpf     3 391:52  0.49% bandwidthd
2243 mysql        32  45    0   583M   224M ucond   1   1:11  0.29% mysqld
4942 root          1  44    0   409M   389M select  0 639:15  0.10% snmpd

#top -SPH
last pid: 91458;  load averages:  1.60,  1.67,  1.66   up 79+01:21:44  19:16:31
189 processes: 8 running, 160 sleeping, 4 zombie, 17 waiting
CPU 0: 19.5% user,  0.0% nice, 21.1% system,  0.0% interrupt, 59.4% idle
CPU 1:  4.5% user,  0.0% nice,  2.3% system, 55.6% interrupt, 37.6% idle
CPU 2: 29.9% user,  0.0% nice, 32.8% system,  0.7% interrupt, 36.6% idle
CPU 3:  0.7% user,  0.0% nice,  0.7% system, 54.5% interrupt, 44.0% idle
Mem: 1250M Active, 5173M Inact, 1186M Wired, 168M Cache, 827M Buf, 132M Free
Swap: 13G Total, 13G Free

  PID USERNAME   PRI NICE   SIZE    RES STATE   C   TIME   WCPU COMMAND
   11 root       171 ki31     0K    64K RUN     0 1563.5 76.37% {idle: cpu0}
   12 root       -68    -     0K   304K CPU1    1 316.2H 62.99% {irq258: bce1}
   12 root       -68    -     0K   304K CPU3    3 256.1H 59.57% {irq256: bce0}
   11 root       171 ki31     0K    64K RUN     2 1557.2 52.29% {idle: cpu2}
   11 root       171 ki31     0K    64K RUN     3 1581.4 41.16% {idle: cpu3}
   11 root       171 ki31     0K    64K RUN     1 1521.0 36.47% {idle: cpu1}
2256 root        45  -19   161M   114M select  0 206.0H 27.98% {stargazer}
    0 root       -68    0     0K   128K CPU2    2 263.7H 26.27% {dummynet}
2256 root        44  -19   161M   114M nanslp  2  33.2H  5.66% {stargazer}
42721 root        45    0 54132K 20524K bpf     2 875:23  2.10% bandwidthd
42720 root        45    0   129M   101M bpf     3 500:02  1.07% bandwidthd

# netstat 1
            input        (Total)           output
   packets  errs idrops      bytes    packets  errs      bytes colls
    117364     0     0  100963681     109065     0   78067830     0
    115534     1     0   95310033     108081     0   77508486     0
    118905     0     0  100751621     110631     0   77324120     0
    114405     0     0   97566245     106469     0   74868269     0
    113041     0     0   94742233     105986     0   75852308     0

  
  
  
# vmstat -i
interrupt                          total       rate
irq1: atkbd0                          36          0
irq3: uart1                         4502          0
irq4: uart0                      2063262          0
irq14: ata0                           57          0
irq20: uhci1                     6671236          0
irq21: uhci0 uhci2+              6701482          0
cpu0: timer                  13409457593       1963
irq256: bce0                 40776737159       5969
irq257: mpt0                   165433421         24
irq258: bce1                 55568239632       8135
cpu3: timer                  13403403721       1962
cpu2: timer                  13403403434       1962
cpu1: timer                  13409449068       1963
Total                       150151564603      21982

# cat /etc/sysctl.conf
net.inet.ip.intr_queue_maxlen=5000
kern.ipc.maxsockbuf=8388608
kern.ipc.nmbclusters=65000
#kern.polling.idle_poll=1
net.inet.udp.blackhole=1
net.inet.icmp.icmplim=50
kern.ipc.somaxconn=32768
net.inet.tcp.log_in_vain=0
net.inet.udp.log_in_vain=0
net.inet.tcp.blackhole=2
net.inet.udp.blackhole=1
net.inet.ip.fastforwarding=1
net.inet.ip.portrange.randomized=0
net.inet.tcp.nolocaltimewait=1
net.inet.icmp.drop_redirect=1
net.inet.ip.redirect=0
net.inet.tcp.drop_synfin=1
net.inet.icmp.icmplim=2000
net.inet.flowtable.enable=0