docs/yardstick/opnfv_yardstick_tc002.rst

   1 .. image:: ../../etc/opnfv-logo.png
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   3   :width: 200
   4   :alt: OPNFV
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   6
   7 *************************************
   8 Yardstick Test Case Description TC002
   9 *************************************
  10
  11 +-----------------------------------------------------------------------------+
  12 |Network Latency                                                              |
  13 +==============+==============================================================+
  14 |test case id  | OPNFV_YARDSTICK_TC002_NW LATENCY                             |
  15 +--------------+--------------------------------------------------------------+
  16 |metric        | RTT, Round Trip Time                                         |
  17 +--------------+--------------------------------------------------------------+
  18 |test purpose  | To do a basic verification that network latency is within    |
  19 |              | acceptable boundaries when packets travel between hosts      |
  20 |              | located on same or different compute blades.                 |
  21 |              | The purpose is also to be able to spot trends. Test results, |
  22 |              | graphs and similar shall be stored for comparison reasons and|
  23 |              | product evolution understanding between different OPNFV      |
  24 |              | versions and/or configurations.                              |
  25 +--------------+--------------------------------------------------------------+
  26 |configuration | file: opnfv_yardstick_tc002.yaml                             |
  27 |              |                                                              |
  28 |              | Packet size 100 bytes. Total test duration 600 seconds.      |
  29 |              | One ping each 10 seconds. SLA RTT is set to maximum 10 ms.   |
  30 +--------------+--------------------------------------------------------------+
  31 |test tool     | ping                                                         |
  32 |              |                                                              |
  33 |              | Ping is normally part of any Linux distribution, hence it    |
  34 |              | doesn't need to be installed. It is also part of the         |
  35 |              | Yardstick Docker image.                                      |
  36 |              | (For example also a Cirros image can be downloaded from      |
  37 |              | https://download.cirros-cloud.net, it includes ping)         |
  38 +--------------+--------------------------------------------------------------+
  39 |references    | Ping man page                                                |
  40 |              |                                                              |
  41 |              | ETSI-NFV-TST001                                              |
  42 +--------------+--------------------------------------------------------------+
  43 |applicability | Test case can be configured with different packet sizes,     |
  44 |              | burst sizes, ping intervals and test duration.               |
  45 |              | SLA is optional. The SLA in this test case serves as an      |
  46 |              | example. Considerably lower RTT is expected, and             |
  47 |              | also normal to achieve in balanced L2 environments. However, |
  48 |              | to cover most configurations, both bare metal and fully      |
  49 |              | virtualized ones, this value should be possible to achieve   |
  50 |              | and acceptable for black box testing. Many real time         |
  51 |              | applications start to suffer badly if the RTT time is higher |
  52 |              | than this. Some may suffer bad also close to this RTT, while |
  53 |              | others may not suffer at all. It is a compromise that may    |
  54 |              | have to be tuned for different configuration purposes.       |
  55 +--------------+--------------------------------------------------------------+
  56 |pre-test      | The test case image needs to be installed into Glance        |
  57 |conditions    | with ping included in it.                                    |
  58 |              |                                                              |
  59 |              | No POD specific requirements have been identified.           |
  60 +--------------+------+----------------------------------+--------------------+
  61 |test sequence | step | description                      | result             |
  62 |              +------+----------------------------------+--------------------+
  63 |              |  1   | The hosts are installed, as      | Logs are stored    |
  64 |              |      | server and client. Ping is       |                    |
  65 |              |      | invoked and logs are produced    |                    |
  66 |              |      | and stored.                      |                    |
  67 +--------------+------+----------------------------------+--------------------+
  68 |test verdict  | Test should not PASS if any RTT is above the optional SLA    |
  69 |              | value, or if there is a test case execution problem.         |
  70 +--------------+--------------------------------------------------------------+
  71