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diff --git a/docs/testing/user/userguide/opnfv_yardstick_tc002.rst b/docs/testing/user/userguide/opnfv_yardstick_tc002.rst new file mode 100644 index 000000000..c98780fd5 --- /dev/null +++ b/docs/testing/user/userguide/opnfv_yardstick_tc002.rst @@ -0,0 +1,126 @@ +.. This work is licensed under a Creative Commons Attribution 4.0 International +.. License. +.. http://creativecommons.org/licenses/by/4.0 +.. (c) OPNFV, Ericsson AB and others. + +************************************* +Yardstick Test Case Description TC002 +************************************* + +.. _cirros-image: https://download.cirros-cloud.net +.. _Ping: https://linux.die.net/man/8/ping + ++-----------------------------------------------------------------------------+ +|Network Latency | +| | ++--------------+--------------------------------------------------------------+ +|test case id | OPNFV_YARDSTICK_TC002_NETWORK LATENCY | +| | | ++--------------+--------------------------------------------------------------+ +|metric | RTT (Round Trip Time) | +| | | ++--------------+--------------------------------------------------------------+ +|test purpose | The purpose of TC002 is to do a basic verification that | +| | network latency is within acceptable boundaries when packets | +| | travel between hosts located on same or different compute | +| | blades. | +| | | +| | 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 | ping | +| | | +| | Ping is a computer network administration software utility | +| | used to test the reachability of a host on an Internet | +| | Protocol (IP) network. It measures the round-trip time for | +| | packet sent from the originating host to a destination | +| | computer that are echoed back to the source. | +| | | +| | Ping is normally part of any Linux distribution, hence it | +| | doesn't need to be installed. It is also part of the | +| | Yardstick Docker image. | +| | (For example also a Cirros image can be downloaded from | +| | cirros-image_, it includes ping) | +| | | ++--------------+--------------------------------------------------------------+ +|test topology | Ping packets (ICMP protocol's mandatory ECHO_REQUEST | +| | datagram) are sent from host VM to target VM(s) to elicit | +| | ICMP ECHO_RESPONSE. | +| | | +| | For one host VM there can be multiple target VMs. | +| | Host VM and target VM(s) can be on same or different compute | +| | blades. | +| | | ++--------------+--------------------------------------------------------------+ +|configuration | file: opnfv_yardstick_tc002.yaml | +| | | +| | Packet size 100 bytes. Test duration 60 seconds. | +| | One ping each 10 seconds. Test is iterated two times. | +| | SLA RTT is set to maximum 10 ms. | +| | | ++--------------+--------------------------------------------------------------+ +|applicability | This test case can be configured with different: | +| | | +| | * packet sizes; | +| | * burst sizes; | +| | * ping intervals; | +| | * test durations; | +| | * test iterations. | +| | | +| | Default values exist. | +| | | +| | SLA is optional. The SLA in this test case serves as an | +| | example. Considerably lower RTT is expected, and also normal | +| | to achieve in balanced L2 environments. However, to cover | +| | most configurations, both bare metal and fully virtualized | +| | ones, this value should be possible to achieve and | +| | acceptable for black box testing. Many real time | +| | applications start to suffer badly if the RTT time is higher | +| | than this. Some may suffer bad also close to this RTT, while | +| | others may not suffer at all. It is a compromise that may | +| | have to be tuned for different configuration purposes. | +| | | ++--------------+--------------------------------------------------------------+ +|usability | This test case is one of Yardstick's generic test. Thus it | +| | is runnable on most of the scenarios. | +| | | ++--------------+--------------------------------------------------------------+ +|references | Ping_ | +| | | +| | ETSI-NFV-TST001 | +| | | ++--------------+--------------------------------------------------------------+ +|pre-test | The test case image (cirros-image) needs to be installed | +|conditions | into Glance with ping included in it. | +| | | +| | No POD specific requirements have been identified. | +| | | ++--------------+--------------------------------------------------------------+ +|test sequence | description and expected result | +| | | ++--------------+--------------------------------------------------------------+ +|step 1 | Two host VMs are booted, as server and client. | +| | | ++--------------+--------------------------------------------------------------+ +|step 2 | Yardstick is connected with the server VM by using ssh. | +| | 'ping_benchmark' bash script is copyied from Jump Host to | +| | the server VM via the ssh tunnel. | +| | | ++--------------+--------------------------------------------------------------+ +|step 3 | Ping is invoked. Ping packets are sent from server VM to | +| | client VM. RTT results are calculated and checked against | +| | the SLA. Logs are produced and stored. | +| | | +| | Result: Logs are stored. | +| | | ++--------------+--------------------------------------------------------------+ +|step 4 | Two host VMs are deleted. | +| | | ++--------------+--------------------------------------------------------------+ +|test verdict | Test should not PASS if any RTT is above the optional SLA | +| | value, or if there is a test case execution problem. | +| | | ++--------------+--------------------------------------------------------------+ |