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diff --git a/docs/testing/user/userguide/opnfv_yardstick_tc011.rst b/docs/testing/user/userguide/opnfv_yardstick_tc011.rst new file mode 100644 index 000000000..48bdef497 --- /dev/null +++ b/docs/testing/user/userguide/opnfv_yardstick_tc011.rst @@ -0,0 +1,123 @@ +.. 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 | The purpose of TC011 is to evaluate the IaaS network | +| | performance with regards to network jitter (packet delay | +| | variation). | +| | It measures the packet delay variation sending the packets | +| | from one VM to the other. | +| | | +| | The purpose is also to be able to spot the trends. | +| | Test results, graphs and similar shall be stored for | +| | comparison reasons and product evolution understanding | +| | between different OPNFV versions and/or configurations. | +| | | ++--------------+--------------------------------------------------------------+ +|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.) | +| | | ++--------------+--------------------------------------------------------------+ +|test | iperf3 test is invoked between a host VM and a target VM. | +|description | | +| | Jitter calculations are continuously computed by the server, | +| | as specified by RTP in RFC 1889. The client records a 64 bit | +| | second/microsecond timestamp in the packet. The server | +| | computes the relative transit time as (server's receive time | +| | - client's send time). The client's and server's clocks do | +| | not need to be synchronized; any difference is subtracted | +| | outin the jitter calculation. Jitter is the smoothed mean of | +| | differences between consecutive transit times. | +| | | ++--------------+--------------------------------------------------------------+ +|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. | +| | | ++--------------+--------------------------------------------------------------+ +|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. | +| | | ++--------------+--------------------------------------------------------------+ +|usability | This test case is one of Yardstick's generic test. Thus it | +| | is runnable on most of the scenarios. | +| | | ++--------------+--------------------------------------------------------------+ +|references | iperf3_ | +| | | +| | ETSI-NFV-TST001 | +| | | ++--------------+--------------------------------------------------------------+ +|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 | Two host VMs with iperf3 installed are booted, as server and | +| | client. | +| | | ++--------------+--------------------------------------------------------------+ +|step 2 | Yardstick is connected with the host VM by using ssh. | +| | A iperf3 server is started on the server VM via the ssh | +| | tunnel. | +| | | ++--------------+--------------------------------------------------------------+ +|step 3 | iperf3 benchmark is invoked. Jitter is calculated and check | +| | against the SLA. Logs are produced and stored. | +| | | +| | Result: Logs are stored. | +| | | ++--------------+--------------------------------------------------------------+ +|step 4 | The host VMs are deleted. | +| | | ++--------------+--------------------------------------------------------------+ +|test verdict | Test should not PASS if any jitter is above the optional SLA | +| | value, or if there is a test case execution problem. | +| | | ++--------------+--------------------------------------------------------------+ |