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Diffstat (limited to 'virt-top/virt-top.1')
| -rwxr-xr-x | virt-top/virt-top.1 | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/virt-top/virt-top.1 b/virt-top/virt-top.1 index 1cd5843..2665e27 100755 --- a/virt-top/virt-top.1 +++ b/virt-top/virt-top.1 @@ -437,6 +437,20 @@ init file. Note that in the current implementation, options specified in the init file override options specified on the command line. This is a bug and this behaviour may change in the future. +.SH "NOTES" +.IX Header "NOTES" +.SS "\s-1NETWORK\s0 \s-1RX\s0 \s-1BYTES\s0 \s-1AND\s0 \s-1PACKETS\s0" +.IX Subsection "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 \s-1RX\s0 stats, virt-top reports the packets transmitted to the +guest, on the basis that the guest might receive them. +.PP +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 \*(L"background noise\*(R" of \s-1RX\s0 packets even when +the network interface is idle or down. These are caused by \s-1STP\s0 +packets generated by the bridge. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fItop\fR\|(1), |