starlingx/docs
Code Issues Proposed changes
docs/doc/source/planning/openstack/pci-passthrough-ethernet-interfaces.rst
Ron Stone 3143d86b69 Openstack planning 
Updates for patchset 2 review comments
Changed link depth of main Planning index and added some narrative guidance
Added planning/openstack as sibling of planning/kubernetes
Related additions to abbrevs.txt
Added max-workers substitution to accomodate StarlingX/vendor variants

Signed-off-by: Ron Stone <ronald.stone@windriver.com>
Change-Id: Ibff9af74ab3f2c00958eff0e33c91465f1dab6b4
Signed-off-by: Stone <ronald.stone@windriver.com>
2021-01-25 08:36:47 -05:00

1.0 KiB
Executable File
Raw Blame History

PCI Passthrough Ethernet Interfaces

A passthrough Ethernet interface is a physical Ethernet on a compute node to which a virtual machine is granted direct access.

This minimizes packet processing delays but at the same time demands special operational considerations.

For all purposes, a passthrough interface behaves as if it were physically attached to the virtual machine. Therefore, any potential throughput limitations coming from the virtualized environment, such as the ones introduced by internal copying of data buffers, are eliminated. However, by bypassing the virtualized environment, the use of passthrough Ethernet devices introduces several restrictions that you must take into consideration. They include:

  • no support for , , , or host interface monitoring
  • no support for live migration