Hi all,
I'm running ~13 virtual machines in production on KVM 62 (unfortunately
the best ubuntu-stable can provide for me :/) and i've noticed a lot of
TX overruns, is this something i should be worried about? Are my
machines losing data?
These machines are all bridged with options like this:
-net nic,macaddr=00:16:3e:00:00:05,vlan=0,model=e1000 -net
tap,fd=17,script=,vlan=0 (where fd differs for each machine)
ifconfig output enclosed below:
br0 Link encap:Ethernet HWaddr 00:15:17:6b:2d:14
inet addr:my.ip.address Bcast:my.ip.addr.255 Mask:255.255.255.0
inet6 addr: my.ipv6 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:610572463 errors:0 dropped:0 overruns:0 frame:0
TX packets:108729730 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:824841768 (786.6 MB) TX bytes:3829964354 (3.5 GB)
eth0 Link encap:Ethernet HWaddr 00:15:17:6b:2d:14
inet6 addr: my.ipv6 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1521528058 errors:0 dropped:108777021 overruns:0
frame:0
TX packets:276414465 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:417285897 (397.9 MB) TX bytes:3547313532 (3.3 GB)
Base address:0xef00 Memory:fdde0000-fde00000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:64334 errors:0 dropped:0 overruns:0 frame:0
TX packets:64334 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:7516953 (7.1 MB) TX bytes:7516953 (7.1 MB)
vnet0 Link encap:Ethernet HWaddr ca:c2:8b:75:ee:83
inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0
inet6 addr: fe80::c8c2:8bff:fe75:ee83/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:468 (468.0 B)
vnet1 Link encap:Ethernet HWaddr 00:ff:c1:ca:e0:18
inet6 addr: fe80::2ff:c1ff:feca:e018/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:306211 errors:0 dropped:0 overruns:0 frame:0
TX packets:208417450 errors:0 dropped:0 overruns:292 carrier:0
collisions:0 txqueuelen:500
RX bytes:84842203 (80.9 MB) TX bytes:3341249731 (3.1 GB)
vnet2 Link encap:Ethernet HWaddr 00:ff:55:94:72:9b
inet6 addr: fe80::2ff:55ff:fe94:729b/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:243806 errors:0 dropped:0 overruns:0 frame:0
TX packets:227992073 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:58875698 (56.1 MB) TX bytes:1147433844 (1.0 GB)
vnet3 Link encap:Ethernet HWaddr 00:ff:b1:b7:41:5f
inet6 addr: fe80::2ff:b1ff:feb7:415f/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:813360 errors:0 dropped:0 overruns:0 frame:0
TX packets:228960883 errors:0 dropped:0 overruns:16 carrier:0
collisions:0 txqueuelen:500
RX bytes:64048107 (61.0 MB) TX bytes:1217812685 (1.1 GB)
vnet4 Link encap:Ethernet HWaddr 00:ff:6e:87:17:7b
inet6 addr: fe80::2ff:6eff:fe87:177b/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:24463 errors:0 dropped:0 overruns:0 frame:0
TX packets:227534964 errors:0 dropped:0 overruns:501 carrier:0
collisions:0 txqueuelen:500
RX bytes:4312887 (4.1 MB) TX bytes:1060554904 (1011.4 MB)
vnet5 Link encap:Ethernet HWaddr 00:ff:50:6a:26:62
inet6 addr: fe80::2ff:50ff:fe6a:2662/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:57623 errors:0 dropped:0 overruns:0 frame:0
TX packets:203904515 errors:0 dropped:0 overruns:491 carrier:0
collisions:0 txqueuelen:500
RX bytes:9015385 (8.5 MB) TX bytes:2856817773 (2.6 GB)
vnet6 Link encap:Ethernet HWaddr 00:ff:3f:ff:32:86
inet6 addr: fe80::2ff:3fff:feff:3286/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:377799 errors:0 dropped:0 overruns:0 frame:0
TX packets:233685442 errors:0 dropped:0 overruns:1 carrier:0
collisions:0 txqueuelen:500
RX bytes:67794919 (64.6 MB) TX bytes:2100174866 (1.9 GB)
vnet7 Link encap:Ethernet HWaddr 00:ff:79:fd:64:94
inet6 addr: fe80::2ff:79ff:fefd:6494/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:306667 errors:0 dropped:0 overruns:0 frame:0
TX packets:228114579 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:42935219 (40.9 MB) TX bytes:1879470986 (1.7 GB)
vnet9 Link encap:Ethernet HWaddr 00:ff:b4:9c:e6:31
inet6 addr: fe80::2ff:b4ff:fe9c:e631/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:227503853 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:0 (0.0 B) TX bytes:1057149624 (1008.1 MB)
vnet10 Link encap:Ethernet HWaddr 00:ff:6a:2f:08:5e
inet6 addr: fe80::2ff:6aff:fe2f:85e/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:29123 errors:0 dropped:0 overruns:0 frame:0
TX packets:227532228 errors:0 dropped:0 overruns:218 carrier:0
collisions:0 txqueuelen:500
RX bytes:1591885 (1.5 MB) TX bytes:1058977339 (1009.9 MB)
vnet11 Link encap:Ethernet HWaddr 00:ff:d4:76:9d:de
inet6 addr: fe80::2ff:d4ff:fe76:9dde/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:218597 errors:0 dropped:0 overruns:0 frame:0
TX packets:227728885 errors:0 dropped:0 overruns:566 carrier:0
collisions:0 txqueuelen:500
RX bytes:31377899 (29.9 MB) TX bytes:1084583551 (1.0 GB)
vnet12 Link encap:Ethernet HWaddr d2:11:1d:f4:46:c0
inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0
inet6 addr: fe80::d011:1dff:fef4:46c0/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 B) TX bytes:468 (468.0 B)
vnet13 Link encap:Ethernet HWaddr 00:ff:77:a1:0c:2a
inet6 addr: fe80::2ff:77ff:fea1:c2a/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:30510393 errors:0 dropped:0 overruns:0 frame:0
TX packets:249244012 errors:0 dropped:0 overruns:2036 carrier:0
collisions:0 txqueuelen:500
RX bytes:3854788416 (3.5 GB) TX bytes:2761388091 (2.5 GB)
Cheers,
Henri
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