docs/testing/user/userguide/nsb/tc_prox_context_buffering_port.rst

   1 .. This work is licensed under a Creative Commons Attribution 4.0 International
   2 .. License.
   3 .. http://creativecommons.org/licenses/by/4.0
   4 .. (c) OPNFV, 2017 Intel Corporation.
   5
   6 **********************************************************
   7 Yardstick Test Case Description: NSB PROX Packet Buffering
   8 **********************************************************
   9
  10 +-----------------------------------------------------------------------------+
  11 |NSB PROX test for NFVI characterization                                      |
  12 |                                                                             |
  13 +--------------+--------------------------------------------------------------+
  14 |test case id  | tc_prox_{context}_buffering-{port_num}                       |
  15 |              |                                                              |
  16 |              | * context = baremetal or heat_context                        |
  17 |              | * port_num = 1                                               |
  18 |              |                                                              |
  19 +--------------+--------------------------------------------------------------+
  20 |metric        | * Network Throughput;                                        |
  21 |              | * TG Packets Out;                                            |
  22 |              | * TG Packets In;                                             |
  23 |              | * VNF Packets Out;                                           |
  24 |              | * VNF Packets In;                                            |
  25 |              | * Dropped packets;                                           |
  26 |              |                                                              |
  27 +--------------+--------------------------------------------------------------+
  28 |test purpose  | This test measures the impact of the condition when packets  |
  29 |              | get buffered, thus they stay in memory for the extended      |
  30 |              | period of time, 125ms in this case.                          |
  31 |              |                                                              |
  32 |              | The Packet Buffering test cases are implemented to run in    |
  33 |              | baremetal and heat context.                                  |
  34 |              |                                                              |
  35 |              | The test runs only on the first port of the SUT.             |
  36 |              |                                                              |
  37 +--------------+--------------------------------------------------------------+
  38 |configuration | The Packet Buffering test cases are listed below:            |
  39 |              |                                                              |
  40 |              | * tc_prox_baremetal_buffering-1.yaml                         |
  41 |              | * tc_prox_heat_context_buffering-1.yaml                      |
  42 |              |                                                              |
  43 |              | Test duration is set as 300sec for each test.                |
  44 |              | The minimum packet size for Buffering test is 64 bytes. This |
  45 |              | is set in the traffic profile and can be configured to use   |
  46 |              | a higher packet size for the test.                           |
  47 |              |                                                              |
  48 +--------------+--------------------------------------------------------------+
  49 |test tool     | PROX                                                         |
  50 |              | PROX is a DPDK application that can simulate VNF workloads   |
  51 |              | and can generate traffic and used for NFVI characterization  |
  52 |              |                                                              |
  53 +--------------+--------------------------------------------------------------+
  54 |applicability | The PROX Packet Buffering test cases can be configured with  |
  55 |              |  different:                                                  |
  56 |              |                                                              |
  57 |              |  * packet sizes;                                             |
  58 |              |  * test durations;                                           |
  59 |              |  * tolerated loss;                                           |
  60 |              |                                                              |
  61 |              | Default values exist.                                        |
  62 |              |                                                              |
  63 +--------------+--------------------------------------------------------------+
  64 |pre-test      | For Openstack test case image (yardstick-samplevnfs) needs   |
  65 |conditions    | to be installed into Glance with Prox and Dpdk included in   |
  66 |              | it. The test need multi-queue enabled in Glance image.       |
  67 |              |                                                              |
  68 |              | For Baremetal tests cases Prox and Dpdk must be installed in |
  69 |              | the hosts where the test is executed. The pod.yaml file must |
  70 |              | have the necessary system and NIC information                |
  71 |              |                                                              |
  72 +--------------+--------------------------------------------------------------+
  73 |test sequence | description and expected result                              |
  74 |              |                                                              |
  75 +--------------+--------------------------------------------------------------+
  76 |step 1        | For Baremetal test: The TG and VNF are started on the hosts  |
  77 |              | based on the pod file.                                       |
  78 |              |                                                              |
  79 |              | For Heat test: Two host VMs are booted, as Traffic generator |
  80 |              | and VNF(Packet Buffering workload) based on the test flavor. |
  81 |              |                                                              |
  82 +--------------+--------------------------------------------------------------+
  83 |step 2        | Yardstick is connected with the TG and VNF by using ssh.     |
  84 |              | The test will resolve the topology and instantiate the VNF   |
  85 |              | and TG and collect the KPI's/metrics.                        |
  86 |              |                                                              |
  87 +--------------+--------------------------------------------------------------+
  88 |step 3        | The TG will send packets to the VNF. If the number of        |
  89 |              | dropped packets is more than the tolerated loss the line     |
  90 |              | rate or throughput is halved. This is done until the dropped |
  91 |              | packets are within an acceptable tolerated loss.             |
  92 |              |                                                              |
  93 |              | The KPI in this test is the maximum number of packets that   |
  94 |              | can be forwarded given the requirement that the latency of   |
  95 |              | each packet is at least 125 millisecond.                     |
  96 |              |                                                              |
  97 +--------------+--------------------------------------------------------------+
  98 |step 4        | In Baremetal test: The test quits the application and unbind |
  99 |              | the dpdk ports.                                              |
 100 |              |                                                              |
 101 |              | In Heat test: Two host VMs are deleted on test completion.   |
 102 |              |                                                              |
 103 +--------------+--------------------------------------------------------------+
 104 |test verdict  | The test case will achieve a Throughput with an accepted     |
 105 |              | minimal tolerated packet loss.                               |
 106 +--------------+--------------------------------------------------------------+
 107