In this session we cover two aspects of live migration:

• We discuss the work of moving the execution of outgoing live migration to a separate dedicated thread in QEMU.
• Using a separate thread for live migration reduces contention with the IO thread and vcpus which results in higher throughput and more reliable downtime.

We analyze Live Migration performance state:

• Performance on very large guests and the issues we encounter with such a guest. This discussion will include convergence and actual downtime (compared to user configured downtime). 
• Live migration effects on the running guest (downtime and performance impact on the guest workload)
• Resource consumption (network bandwidth and CPU usage)