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Diffstat (limited to 'virt-top/virt-top.txt')
| -rw-r--r-- | virt-top/virt-top.txt | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/virt-top/virt-top.txt b/virt-top/virt-top.txt index da737b8..de0681e 100644 --- a/virt-top/virt-top.txt +++ b/virt-top/virt-top.txt @@ -269,6 +269,19 @@ INIT FILE file override options specified on the command line. This is a bug and this behaviour may change in the future. +NOTES + NETWORK RX BYTES AND PACKETS + Libvirt/virt-top has no way to know that a packet transmitted to a guest + was received (eg. if the guest is not listening). In the network RX + stats, virt-top reports the packets transmitted to the guest, on the + basis that the guest might receive them. + + In particular this includes broadcast packets. Because of the way that + Linux bridges work, if the guest is connected to a bridge, it will + probably see a steady "background noise" of RX packets even when the + network interface is idle or down. These are caused by STP packets + generated by the bridge. + SEE ALSO top(1), virsh(1), <http://www.libvirt.org/ocaml/>, <http://www.libvirt.org/>, <http://people.redhat.com/~rjones/>, |