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+.. This work is licensed under a Creative Commons Attribution 4.0 International
+.. License.
+.. http://creativecommons.org/licenses/by/4.0
+.. (c) OPNFV, Huawei Technologies Co.,Ltd and others.
+
+*************************************
+Yardstick Test Case Description TC011
+*************************************
+
+.. _iperf3: https://iperf.fr/
+
++-----------------------------------------------------------------------------+
+|Packet delay variation between VMs |
+| |
++--------------+--------------------------------------------------------------+
+|test case id | OPNFV_YARDSTICK_TC011_Packet delay variation between VMs |
+| | |
++--------------+--------------------------------------------------------------+
+|metric | jitter: packet delay variation (ms) |
+| | |
++--------------+--------------------------------------------------------------+
+|test purpose | Measure the packet delay variation sending the packets from |
+| | one VM to the other. |
+| | |
++--------------+--------------------------------------------------------------+
+|configuration | File: opnfv_yardstick_tc011.yaml |
+| | |
+| | * options: |
+| | protocol: udp # The protocol used by iperf3 tools |
+| | bandwidth: 20m # It will send the given number of packets |
+| | without pausing |
+| | * runner: |
+| | duration: 30 # Total test duration 30 seconds. |
+| | |
+| | * SLA (optional): |
+| | jitter: 10 (ms) # The maximum amount of jitter that is |
+| | accepted. |
+| | |
++--------------+--------------------------------------------------------------+
+|test tool | iperf3 |
+| | |
+| | iPerf3 is a tool for active measurements of the maximum |
+| | achievable bandwidth on IP networks. It supports tuning of |
+| | various parameters related to timing, buffers and protocols. |
+| | The UDP protocols can be used to measure jitter delay. |
+| | |
+| | (iperf3 is not always part of a Linux distribution, hence it |
+| | needs to be installed. It is part of the Yardstick Docker |
+| | image. |
+| | As an example see the /yardstick/tools/ directory for how |
+| | to generate a Linux image with pktgen included.) |
+| | |
++--------------+--------------------------------------------------------------+
+|references | iperf3_ |
+| | |
+| | ETSI-NFV-TST001 |
+| | |
++--------------+--------------------------------------------------------------+
+|applicability | Test can be configured with different |
+| | |
+| | * bandwidth: Test case can be configured with different |
+| | bandwidth |
+| | |
+| | * duration: The test duration can be configured |
+| | |
+| | * jitter: SLA is optional. The SLA in this test case |
+| | serves as an example. |
+| | |
++--------------+--------------------------------------------------------------+
+|pre-test | The test case image needs to be installed into Glance |
+|conditions | with iperf3 included in the image. |
+| | |
+| | No POD specific requirements have been identified. |
+| | |
++--------------+--------------------------------------------------------------+
+|test sequence | description and expected result |
+| | |
++--------------+--------------------------------------------------------------+
+|step 1 | The hosts are installed, as server and client. iperf3 is |
+| | invoked and logs are produced and stored. |
+| | |
+| | Result: Logs are stored. |
+| | |
++--------------+--------------------------------------------------------------+
+|test verdict | Test should not PASS if any jitter is above the optional SLA |
+| | value, or if there is a test case execution problem. |
+| | |
++--------------+--------------------------------------------------------------+