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