Tim Wood
2006-Jul-23 18:01 UTC
[Xen-users] strange network usage in VMs immediately after a migration
Hi, I''ve been doing some monitoring of resource usage on my VMs and I noticed something strange: When I migrate a VM to a new host, there is a burst of network traffic for all of the VMs already residing on the destination host. If I check the TX bytes before and after migrating a VM which is allocated 128mb of ram, I find that about 80mb of data has been transfered by every single VM on the destination machine. I''m getting these numbers by looking at the RX/TX bytes reported in ifconfig for each VIF interface. Dom0 also sees about 150mb of data transfer, but that makes sense b/c that is the data for the VM being migrated. Can anyone explain why there is network activity on the other domains? It doesn''t seem to hurt anything, I''m just curious... -Tim _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users