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Wednesday, November 7 • 2:30pm - 3:00pm
Live Migration: Even faster, Now With a Dedicated Thread! - Orit Wasserman, Red Hat

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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)


Orit Wasserman

Orit is a senior software engineer on the Red Hat virtualization team where she works on QEMU/KVM live migration. Previously she worked on nested virtualization on Intel x86 (nested VMX) for KVM at IBM Haifa Research Labs. Prior to that Orit was engaged i

Wednesday November 7, 2012 2:30pm - 3:00pm CET
L'ARIA Restaurant

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