[libvirt-users] using transport protocol in live migration

Hello, I am working on live migration of virtual machine using xen and kvm.If i use qemu+ssh:///system then is the transport protocol used during live migration tcp or ssh?I mean i want to evaluate the performance of transport protocil during live migration using wireshark and netperf tool,so using this command will show tcp performance? Orelse i will have to use qemu+tcp:/// ?