How could I measure the time for live-migration?
I want to compare live-migration on 1 Gb network with the same on 10 Gb. Is there a way to measure downtime?
The ask.openstack.org website will be read-only from now on. Please ask questions on the openstack-discuss mailing-list, stackoverflow.com for coding or serverfault.com for operations.
If you are doing true live migration, with shared storage of the VM, the only data transfer should be that of the memory state. The down time should be in seconds. The only way I can think of is to set the VM to ping, and take packet capture and see how long it goes dark.