Processor Interrupt High

brainloss

I'm in the UK with a ~38mbps/10mbps FTTC connection.
Today I can only get about 1mbps downstream. Normal diagnostic with the ISP are in progress, but I rebooted my pfsense box and then noticed very high processor interrupts (See attachment) - I'm no freebsd expert - would someone help enlighten me?


$ ifconfig
em0: flags=8843 <up,broadcast,running,simplex,multicast>metric 0 mtu 1500
	options=219b <rxcsum,txcsum,vlan_mtu,vlan_hwtagging,vlan_hwcsum,tso4,wol_magic>ether 00:1b:21:b7:7b:93
	inet6 fe80::21b:21ff:feb7:7b93%em0 prefixlen 64 scopeid 0x1 
	nd6 options=3 <performnud,accept_rtadv>media: Ethernet autoselect (100baseTX <full-duplex>)
	status: active
bge0: flags=8843 <up,broadcast,running,simplex,multicast>metric 0 mtu 1500
	options=8009b <rxcsum,txcsum,vlan_mtu,vlan_hwtagging,vlan_hwcsum,linkstate>ether 00:13:72:d8:a9:38
	inet6 fe80::213:72ff:fed8:a938%bge0 prefixlen 64 scopeid 0x2 
	nd6 options=3 <performnud,accept_rtadv>media: Ethernet autoselect (100baseTX <full-duplex>)
	status: active
em1: flags=8843 <up,broadcast,running,simplex,multicast>metric 0 mtu 1500
	options=209b <rxcsum,txcsum,vlan_mtu,vlan_hwtagging,vlan_hwcsum,wol_magic>ether 00:1b:21:70:14:c8
	inet6 fe80::21b:21ff:fe70:14c8%em1 prefixlen 64 scopeid 0x3 
	inet 192.168.10.1 netmask 0xffffff00 broadcast 192.168.10.255
	nd6 options=3 <performnud,accept_rtadv>media: Ethernet autoselect (1000baseT <full-duplex>)
	status: active
lo0: flags=8049 <up,loopback,running,multicast>metric 0 mtu 16384
	options=3 <rxcsum,txcsum>inet 127.0.0.1 netmask 0xff000000 
	inet6 ::1 prefixlen 128 
	inet6 fe80::1%lo0 prefixlen 64 scopeid 0x4 
	nd6 options=3 <performnud,accept_rtadv>pfsync0: flags=0<> metric 0 mtu 1460
	syncpeer: 224.0.0.240 maxupd: 128 syncok: 1
pflog0: flags=100 <promisc>metric 0 mtu 33200
enc0: flags=0<> metric 0 mtu 1536
em1_vlan110: flags=8843 <up,broadcast,running,simplex,multicast>metric 0 mtu 1500
	options=3 <rxcsum,txcsum>ether 00:1b:21:70:14:c8
	inet6 fe80::21b:21ff:feb7:7b93%em1_vlan110 prefixlen 64 scopeid 0x8 
	inet 192.168.253.1 netmask 0xffffff00 broadcast 192.168.253.255
	nd6 options=3 <performnud,accept_rtadv>media: Ethernet autoselect (1000baseT <full-duplex>)
	status: active
	vlan: 110 parent interface: em1
em1_vlan103: flags=8843 <up,broadcast,running,simplex,multicast>metric 0 mtu 1500
	options=3 <rxcsum,txcsum>ether 00:1b:21:70:14:c8
	inet6 fe80::21b:21ff:feb7:7b93%em1_vlan103 prefixlen 64 scopeid 0x9 
	inet 192.168.252.1 netmask 0xffffff00 broadcast 192.168.252.255
	nd6 options=3 <performnud,accept_rtadv>media: Ethernet autoselect (1000baseT <full-duplex>)
	status: active
	vlan: 103 parent interface: em1
pppoe0: flags=88d1 <up,pointopoint,running,noarp,simplex,multicast>metric 0 mtu 1492
	inet [!!THIS DATA REMOVED!!] netmask 0xffffffff 
	inet6 fe80::21b:21ff:feb7:7b93%pppoe0 prefixlen 64 scopeid 0xa 
	nd6 options=3 <performnud,accept_rtadv>ovpns1: flags=8051 <up,pointopoint,running,multicast>metric 0 mtu 1500
	options=80000 <linkstate>inet6 fe80::21b:21ff:feb7:7b93%ovpns1 prefixlen 64 scopeid 0xb 
	inet 10.0.1.1 --> 10.0.1.2 netmask 0xffffffff 
	nd6 options=3 <performnud,accept_rtadv>Opened by PID 5990
ovpns2: flags=8051 <up,pointopoint,running,multicast>metric 0 mtu 1500
	options=80000 <linkstate>inet6 fe80::21b:21ff:feb7:7b93%ovpns2 prefixlen 64 scopeid 0xc 
	inet 10.0.2.1 --> 10.0.2.2 netmask 0xffffffff 
	nd6 options=3 <performnud,accept_rtadv>Opened by PID 12623
ovpns4: flags=8051 <up,pointopoint,running,multicast>metric 0 mtu 1500
	options=80000 <linkstate>inet6 fe80::21b:21ff:feb7:7b93%ovpns4 prefixlen 64 scopeid 0xd 
	inet 10.0.4.1 --> 10.0.4.2 netmask 0xffffffff 
	nd6 options=3 <performnud,accept_rtadv>Opened by PID 21912</performnud,accept_rtadv></linkstate></up,pointopoint,running,multicast></performnud,accept_rtadv></linkstate></up,pointopoint,running,multicast></performnud,accept_rtadv></linkstate></up,pointopoint,running,multicast></performnud,accept_rtadv></up,pointopoint,running,noarp,simplex,multicast></full-duplex></performnud,accept_rtadv></rxcsum,txcsum></up,broadcast,running,simplex,multicast></full-duplex></performnud,accept_rtadv></rxcsum,txcsum></up,broadcast,running,simplex,multicast></promisc></performnud,accept_rtadv></rxcsum,txcsum></up,loopback,running,multicast></full-duplex></performnud,accept_rtadv></rxcsum,txcsum,vlan_mtu,vlan_hwtagging,vlan_hwcsum,wol_magic></up,broadcast,running,simplex,multicast></full-duplex></performnud,accept_rtadv></rxcsum,txcsum,vlan_mtu,vlan_hwtagging,vlan_hwcsum,linkstate></up,broadcast,running,simplex,multicast></full-duplex></performnud,accept_rtadv></rxcsum,txcsum,vlan_mtu,vlan_hwtagging,vlan_hwcsum,tso4,wol_magic></up,broadcast,running,simplex,multicast>


$ vmstat -i
interrupt                          total       rate
irq14: ata0                           68          0
irq16: bge0 em1                   219925         51
irq20: atapci1                     14286          3
irq21: uhci0 ehci0                    16          0
cpu0: timer                      8597332       1999
irq256: em0:rx 0                  134365         31
irq257: em0:tx 0                  125812         29
irq258: em0:link                       2          0
cpu1: timer                      8597079       1999
Total                           17688885       4114


$ top -S
last pid: 15208;  load averages:  0.00,  0.01,  0.00  up 0+01:12:26    15:16:35
114 processes: 3 running, 90 sleeping, 21 waiting

Mem: 47M Active, 16M Inact, 50M Wired, 944K Cache, 32M Buf, 868M Free
Swap: 2048M Total, 2048M Free

  PID USERNAME    THR PRI NICE   SIZE    RES STATE   C   TIME   WCPU COMMAND
   11 root          2 171 ki31     0K    16K CPU0    0 141:14 200.00% idle
 6368 root          1  49    0 53596K 20236K piperd  0   0:03  0.20% php
    0 root         10 -68    0     0K    72K -       1   0:44  0.00% kernel
   12 root         21 -60    -     0K   168K WAIT    0   0:21  0.00% intr
 6357 root          1  76    0 54620K 22896K accept  0   0:04  0.00% php
10548 root          1  64   20  5116K  3916K select  0   0:02  0.00% openvpn
 5621 root          1  76    0 54620K 18860K accept  0   0:02  0.00% php
 5716 root          1  76    0 53596K 17688K accept  0   0:02  0.00% php
 4658 root          1  44    0  7612K  4844K kqread  1   0:01  0.00% lighttpd
26447 root          1  44    0  4944K  2512K select  0   0:01  0.00% syslogd
24247 nobody        1  44    0  5556K  2644K select  1   0:01  0.00% dnsmasq
   14 root          1 -16    -     0K     8K -       1   0:01  0.00% yarrow
23304 root          1  76   20  3656K  1520K wait    0   0:01  0.00% sh
21237 root          1  44    0  3316K  1356K select  1   0:00  0.00% apinger
    3 root          1  -8    -     0K     8K -       0   0:00  0.00% g_up
    4 root          1  -8    -     0K     8K -       1   0:00  0.00% g_down
21546 dhcpd         1  44    0  8436K  5444K select  0   0:00  0.00% dhcpd
27559 root          1  44    0  3316K   924K piperd  1   0:00  0.00% logger

cpu.png_thumb

brainloss

Upgrade to latest stable and a reboot seems to have cured it ;-0