On 06/03/2019 1:09 pm, Eugene Grosbein wrote:
04.06.2019 0:49, Larry Rosenman wrote:On 06/03/2019 12:23 pm, Eugene Grosbein wrote:03.06.2019 22:56, Larry Rosenman wrote:I have a mrtg job that runs every 5 minutes on a FreeBSD-CURRENT box and gets this randomly:SNMP Error: send_query: No buffer space available[skip]How can I debug this?Your outgoing network interface stalls for some reason. Where is this traffic directed to? Some kind of VPN tunnel? Physical NIC that looses link? Some Wifi or mobile network?physical NIC on the same physical network (all Ubiquiti gear). ⌂66% [l...@borg.lerctr.org:~] $ ifconfig lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384 options=680003<RXCSUM,TXCSUM,LINKSTATE,RXCSUM_IPV6,TXCSUM_IPV6> inet6 ::1 prefixlen 128 inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1 inet 127.0.0.1 netmask 0xff000000 groups: lo nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>bce0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500 options=c01bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,VLAN_HWTSO,LINKSTATE>ether a4:ba:db:29:66:95 media: Ethernet autoselect (1000baseT <full-duplex>) status: active nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> bce1: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500options=c01bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,VLAN_HWTSO,LINKSTATE>ether a4:ba:db:29:66:97 media: Ethernet autoselect nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> bce2: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500options=c01bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,VLAN_HWTSO,LINKSTATE>ether a4:ba:db:29:66:99 media: Ethernet autoselect nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL> bce3: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500options=c01bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,TSO4,VLAN_HWTSO,LINKSTATE>ether a4:ba:db:29:66:9b media: Ethernet autoselect nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>bridge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500ether 02:d7:b8:51:f2:00 inet6 fe80::d7:b8ff:fe51:f200%bridge0 prefixlen 64 scopeid 0x6 inet6 2600:1700:210:b180:d7:b8ff:fe51:f200 prefixlen 64 autoconf inet 192.168.200.4 netmask 0xfffffc00 broadcast 192.168.203.255 id 00:00:00:00:00:00 priority 32768 hellotime 2 fwddelay 15 maxage 20 holdcnt 6 proto rstp maxaddr 2000 timeout 1200 root id 00:00:00:00:00:00 priority 32768 ifcost 0 port 0 member: bce0 flags=143<LEARNING,DISCOVER,AUTOEDGE,AUTOPTP> ifmaxaddr 0 port 2 priority 128 path cost 55 groups: bridge nd6 options=23<PERFORMNUD,ACCEPT_RTADV,AUTO_LINKLOCAL> ⌂68% [l...@borg.lerctr.org:~] $ bridge0 via bce0 to the "main-switch" . and all the AP's,switches, etc.You should search system logs for possible link problems and check counters shown by "netstat -idnh" (errs/drop/coll). Also check counters by "netstat -m" for mbufs/mbuf clusters.
⌂79% [l...@borg.lerctr.org:~] $ netstat -idnhName Mtu Network Address Ipkts Ierrs Idrop Opkts Oerrs Coll Drop lo0 16K <Link#1> lo0 27M 0 0 27M 0 0 0 lo0 - ::1/128 ::1 582k - - 582k - - - lo0 - fe80::%lo0/64 fe80::1%lo0 0 - - 0 - - - lo0 - 127.0.0.0/8 127.0.0.1 190k - - 26M - - - bce0 1.5K <Link#2> a4:ba:db:29:66:95 715M 186k 0 533M 0 0 15M bce1* 1.5K <Link#3> a4:ba:db:29:66:97 0 0 0 0 0 0 0 bce2* 1.5K <Link#4> a4:ba:db:29:66:99 0 0 0 0 0 0 0 bce3* 1.5K <Link#5> a4:ba:db:29:66:9b 0 0 0 0 0 0 0 bridg 1.5K <Link#6> 02:d7:b8:51:f2:00 715M 0 0 533M 15M 0 0 bridg - fe80::%bridge fe80::d7:b8ff:fe5 7.2k - - 7.2k - - - bridg - 2600:1700:210 2600:1700:210:b18 578M - - 476M - - - bridg - 192.168.200.0 192.168.200.4 161M - - 72M - - -
⌂86% [l...@borg.lerctr.org:~] $ netstat -m 3212/18193/21405 mbufs in use (current/cache/total) 2078/11604/13682/8175421 mbuf clusters in use (current/cache/total/max)2045/8075 mbuf+clusters out of packet secondary zone in use (current/cache) 6/9355/9361/4087710 4k (page size) jumbo clusters in use (current/cache/total/max)
0/0/0/1211173 9k jumbo clusters in use (current/cache/total/max) 0/0/0/681285 16k jumbo clusters in use (current/cache/total/max) 4983K/65176K/70159K bytes allocated to network (current/cache/total) 0/0/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters) 0/0/0 requests for mbufs delayed (mbufs/clusters/mbuf+clusters) 0/0/0 requests for jumbo clusters delayed (4k/9k/16k) 0/0/0 requests for jumbo clusters denied (4k/9k/16k) 0 sendfile syscalls 0 sendfile syscalls completed without I/O request 0 requests for I/O initiated by sendfile 0 pages read by sendfile as part of a request 0 pages were valid at time of a sendfile request 0 pages were valid and substituted to bogus page 0 pages were requested for read ahead by applications 0 pages were read ahead by sendfile 0 times sendfile encountered an already busy page 0 requests for sfbufs denied 0 requests for sfbufs delayed ⌂83% [l...@borg.lerctr.org:~] $ Hrm. I may be able to move directly away from the bridge..... ⌂83% [l...@borg.lerctr.org:~] $ grep bce0 /var/log/messages ⌂80% [l...@borg.lerctr.org:~] 1 $ grep bridge /var/log/messagesJun 3 02:48:30 borg kernel: arp: 192.168.200.54 moved from 04:c9:d9:63:22:87 to 04:c9:d9:63:22:89 on bridge0 Jun 3 02:49:49 borg kernel: arp: 192.168.200.54 moved from 04:c9:d9:63:22:89 to 04:c9:d9:63:22:87 on bridge0
⌂83% [l...@borg.lerctr.org:~] $ uptime 1:15PM up 1 day, 18:11, 1 user, load averages: 20.08, 18.82, 18.13 ⌂83% [l...@borg.lerctr.org:~] $ -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 214-642-9640 E-Mail: l...@lerctr.org US Mail: 5708 Sabbia Dr, Round Rock, TX 78665-2106 _______________________________________________ freebsd-net@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
