[libvirt-users] Need help of virDomainInterfaceStats
张章
zhang_zhang at live.com
Tue Sep 4 01:45:17 UTC 2012
hi,all
I am using virDomainInterfaceStats to monitor the network flow of VM. But there is some strange things.
the description of vnet in xml is:
<interface type='bridge'>
<mac address='00:16:3e:5d:aa:a8'/>
<source bridge='br0'/>
<target dev='vnet0'/>
<model type='virtio'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
but when I call virDomainInterfaceStats to get network flow from vnet0, I get some wrong data:
rx: 139972719907412 tx:7311107385599290735
after 2 seconds, I call it again and I get:
rx: 31 tx:7311107385599290735
another 2 seconds:
rx:155 tx:7311107385599290735
and...
rx:110 tx:7311107385599290735
(rx:receive, tx:transmit)
what do these data mean? Why there is no difference in tx at all? And why the difference in rx is so weird?
Many thanks!
regards
zhangzhang
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