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diff --git a/docs/userguide/02-methodology.rst b/docs/userguide/02-methodology.rst new file mode 100644 index 000000000..7fdb5f64f --- /dev/null +++ b/docs/userguide/02-methodology.rst @@ -0,0 +1,192 @@ +.. 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. + +=========== +Methodology +=========== + +Abstract +======== + +This chapter describes the methodology implemented by the Yardstick project for +verifying the :term:`NFVI` from the perspective of a :term:`VNF`. + +ETSI-NFV +======== + +.. _NFV-TST001: https://docbox.etsi.org/ISG/NFV/Open/Drafts/TST001_-_Pre-deployment_Validation/ +.. _Yardsticktst: https://wiki.opnfv.org/_media/opnfv_summit_-_bridging_opnfv_and_etsi.pdf + + +The document ETSI GS NFV-TST001_, "Pre-deployment Testing; Report on Validation +of NFV Environments and Services", recommends methods for pre-deployment +testing of the functional components of an NFV environment. + +The Yardstick project implements the methodology described in chapter 6, "Pre- +deployment validation of NFV infrastructure". + +The methodology consists in decomposing the typical :term:`VNF` work-load +performance metrics into a number of characteristics/performance vectors, which +each can be represented by distinct test-cases. + +The methodology includes five steps: + +* *Step1:* Define Infrastruture - the Hardware, Software and corresponding + configuration target for validation; the OPNFV infrastructure, in OPNFV + community labs. + +* *Step2:* Identify :term:`VNF` type - the application for which the + infrastructure is to be validated, and its requirements on the underlying + infrastructure. + +* *Step3:* Select test cases - depending on the workload that represents the + application for which the infrastruture is to be validated, the relevant + test cases amongst the list of available Yardstick test cases. + +* *Step4:* Execute tests - define the duration and number of iterations for the + selected test cases, tests runs are automated via OPNFV Jenkins Jobs. + +* *Step5:* Collect results - using the common API for result collection. + +.. seealso:: Yardsticktst_ for material on alignment ETSI TST001 and Yardstick. + +Metrics +======= + +The metrics, as defined by ETSI GS NFV-TST001, are shown in +:ref:`Table1 <table2_1>`, :ref:`Table2 <table2_2>` and +:ref:`Table3 <table2_3>`. + +In OPNFV Brahmaputra release, generic test cases covering aspects of the listed +metrics are available; further OPNFV releases will provide extended testing of +these metrics. +The view of available Yardstick test cases cross ETSI definitions in +:ref:`Table1 <table2_1>`, :ref:`Table2 <table2_2>` and :ref:`Table3 <table2_3>` +is shown in :ref:`Table4 <table2_4>`. +It shall be noticed that the Yardstick test cases are examples, the test +duration and number of iterations are configurable, as are the System Under +Test (SUT) and the attributes (or, in Yardstick nomemclature, the scenario +options). + +.. _table2_1: + +**Table 1 - Performance/Speed Metrics** + ++---------+-------------------------------------------------------------------+ +| Category| Performance/Speed | +| | | ++---------+-------------------------------------------------------------------+ +| Compute | * Latency for random memory access | +| | * Latency for cache read/write operations | +| | * Processing speed (instructions per second) | +| | * Throughput for random memory access (bytes per second) | +| | | ++---------+-------------------------------------------------------------------+ +| Network | * Throughput per NFVI node (frames/byte per second) | +| | * Throughput provided to a VM (frames/byte per second) | +| | * Latency per traffic flow | +| | * Latency between VMs | +| | * Latency between NFVI nodes | +| | * Packet delay variation (jitter) between VMs | +| | * Packet delay variation (jitter) between NFVI nodes | +| | | ++---------+-------------------------------------------------------------------+ +| Storage | * Sequential read/write IOPS | +| | * Random read/write IOPS | +| | * Latency for storage read/write operations | +| | * Throughput for storage read/write operations | +| | | ++---------+-------------------------------------------------------------------+ + +.. _table2_2: + +**Table 2 - Capacity/Scale Metrics** + ++---------+-------------------------------------------------------------------+ +| Category| Capacity/Scale | +| | | ++---------+-------------------------------------------------------------------+ +| Compute | * Number of cores and threads- Available memory size | +| | * Cache size | +| | * Processor utilization (max, average, standard deviation) | +| | * Memory utilization (max, average, standard deviation) | +| | * Cache utilization (max, average, standard deviation) | +| | | ++---------+-------------------------------------------------------------------+ +| Network | * Number of connections | +| | * Number of frames sent/received | +| | * Maximum throughput between VMs (frames/byte per second) | +| | * Maximum throughput between NFVI nodes (frames/byte per second) | +| | * Network utilization (max, average, standard deviation) | +| | * Number of traffic flows | +| | | ++---------+-------------------------------------------------------------------+ +| Storage | * Storage/Disk size | +| | * Capacity allocation (block-based, object-based) | +| | * Block size | +| | * Maximum sequential read/write IOPS | +| | * Maximum random read/write IOPS | +| | * Disk utilization (max, average, standard deviation) | +| | | ++---------+-------------------------------------------------------------------+ + +.. _table2_3: + +**Table 3 - Availability/Reliability Metrics** + ++---------+-------------------------------------------------------------------+ +| Category| Availability/Reliability | +| | | ++---------+-------------------------------------------------------------------+ +| Compute | * Processor availability (Error free processing time) | +| | * Memory availability (Error free memory time) | +| | * Processor mean-time-to-failure | +| | * Memory mean-time-to-failure | +| | * Number of processing faults per second | +| | | ++---------+-------------------------------------------------------------------+ +| Network | * NIC availability (Error free connection time) | +| | * Link availability (Error free transmission time) | +| | * NIC mean-time-to-failure | +| | * Network timeout duration due to link failure | +| | * Frame loss rate | +| | | ++---------+-------------------------------------------------------------------+ +| Storage | * Disk availability (Error free disk access time) | +| | * Disk mean-time-to-failure | +| | * Number of failed storage read/write operations per second | +| | | ++---------+-------------------------------------------------------------------+ + +.. _table2_4: + +**Table 4 - Yardstick Generic Test Cases** + ++---------+-------------------+----------------+------------------------------+ +| Category| Performance/Speed | Capacity/Scale | Availability/Reliability | +| | | | | ++---------+-------------------+----------------+------------------------------+ +| Compute | TC003 [1]_ | TC003 [1]_ | TC013 [1]_ | +| | TC004 [1]_ | TC004 [1]_ | TC015 [1]_ | +| | TC014 | TC010 | | +| | TC024 | TC012 | | +| | | | | ++---------+-------------------+----------------+------------------------------+ +| Network | TC002 | TC001 | TC016 [1]_ | +| | TC011 | TC008 | TC018 [1]_ | +| | | TC009 | | +| | | | | ++---------+-------------------+----------------+------------------------------+ +| Storage | TC005 | TC005 | TC017 [1]_ | +| | | | | ++---------+-------------------+----------------+------------------------------+ + +.. note:: The description in this OPNFV document is intended as a reference for + users to understand the scope of the Yardstick Project and the + deliverables of the Yardstick framework. For complete description of + the methodology, refer to the ETSI document. + +.. rubric:: Footnotes +.. [1] To be included in future deliveries. |