migration/xbzrle: add encoding rate
Users may need to check the xbzrle encoding rate to know if the guest memory is xbzrle encoding-friendly, and dynamically turn off the encoding if the encoding rate is low. Signed-off-by: NYi Sun <yi.y.sun@intel.com> Signed-off-by: NWei Wang <wei.w.wang@intel.com> Message-Id: <1588208375-19556-1-git-send-email-wei.w.wang@intel.com> Reviewed-by: NDr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: NDr. David Alan Gilbert <dgilbert@redhat.com>
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