From mboxrd@z Thu Jan 1 00:00:00 1970 From: Henri Cook Subject: Network Overruns Date: Fri, 12 Sep 2008 18:29:53 +0100 Message-ID: <48CAA711.8060302@theplayboymansion.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit To: kvm@vger.kernel.org Return-path: Received: from rigel.orion-hosting.co.uk ([85.234.155.90]:35695 "EHLO rigel.orion-hosting.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753053AbYILRhn (ORCPT ); Fri, 12 Sep 2008 13:37:43 -0400 Received: from [192.168.69.169] (87-194-239-65.bethere.co.uk [87.194.239.65]) by rigel.orion-hosting.co.uk (OHS-Mailer) with ESMTPA id 8D5AF57015D for ; Fri, 12 Sep 2008 18:29:53 +0100 (BST) Sender: kvm-owner@vger.kernel.org List-ID: 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