Page tree

Versions Compared


  • This line was added.
  • This line was removed.
  • Formatting was changed.


Testbed: Intel Pod12




For all the tests, unless specified otherwise, we consider bi-directional traffic with single-flow. Bidirectional scenario is considered to be the most precise way how to perform test testing as it is running one separate stream in each direction that is evaluated on the other endpoint.

The Ethernet frames used in the tests are based on Ethernet standard. The packet-size distribution is compliant to RFC 2544 specification, covering the most important frame sizes that might be present in average network -  64, 128, 256, 512, 1024, 1280, 1518 Bytes.



The tests are based on the Level Test Design (LTD) Specification, which is one of the products of the OPNFV vsperf project. The approach VSPERF has adopted is to take existing tests that are relevant to performance benchmarking of physical switches and applying them to benchmarking virtual switching (to allow for a fair comparison with their physical counterparts). Out of many tests that are part of the VSPERF LTD, we use two tests - RFC 2544 Throughput and RFC 2544 Back to Back frame tests.


The back-to-back test is used to test the equipment’s behavior with presence of  bursty traffic or in other words test the operation of buffers. This test attempts to characterize the longest "burst" of back-to-back frames that the DUT can process without loss, as per section 26.4 of RFC 2544. This benchmark should be repeated, and result consistency examined, as results with physical devices have been unstable in some cases.


Performance Metrics

In this work, we consider the following performance metrics