Streaming video performance is poor via Spice in a RHEV environment

Solution In Progress - Updated -

Issue

  • Streaming video display in Windows 7 guests becomes choppy at times.

  • It's not just the number of active users that causes performance to degenerate, it's related to the number of total qemu-kvm processes. For example, 50 guests doing streaming video on one host may be fine, but 30 guests doing streaming video plus 110 "idle" guests seem to cause the problem to occur.

Environment

  • Red Hat Enterprise Virtualization (RHEV) 3.4
  • Red Hat Enterprise Virtualization Hypervisor (RHEV-H) 6.5

and;

  • Red Hat Enterprise Virtualization (RHEV) 3.5
  • Red Hat Enterprise Virtualization Hypervisor (RHEV-H) 7.1

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