Performance Test Terminology for EtherNet/IP Devices - ODVA

Performance Test Terminology for EtherNet/IP DevicesAbstractThis document discusses and defines a number of terms that are used in describing performancetests and the results for EtherNet/IP devices. The terms and definitions presented in thisdocument will be used in additional documents to describe performance tests and the suggestedformat in reporting the results for these tests. This document is a product of the EtherNet/IPPerformance Workgroup of the Open DeviceNet Vendor Association (ODVA) EtherNet/IPImplementors Workshop.Table of Contents1 Introduction .......................................................................................................12 Metrics................................................................................................................22.1 Term (Definition Format) ............................................................................................... 22.2 Action Latency................................................................................................................ 22.3 Jitter/Variability .............................................................................................................. 32.4 Latency............................................................................................................................ 32.5 Overload Behavior.......................................................................................................... 42.6 Response Latency (a.k.a. Response Time) ..................................................................... 42.7 Throughput...................................................................................................................... 53 Types of Equipment ..........................................................................................63.1 Term (Definition Format) ............................................................................................... 63.2 Device Under Test (DUT) .............................................................................................. 63.3 Network Analyzer........................................................................................................... 63.4 Network Infrastructure Equipment ................................................................................. 73.5 Protocol Analyzer ...........................................................................................................73.6 Test Equipment ............................................................................................................... 83.7 Traffic Generator ............................................................................................................ 84 Other Terms ......................................................................................................94.1 Unloaded......................................................................................................................... 94.2 Loaded............................................................................................................................. 94.3 Within-Spec .................................................................................................................... 94.4 Outside-Spec................................................................................................................... 95 EtherNet/IP Performance Workgroup Members........................................106 Acknowledgments ...........................................................................................107 References ........................................................................................................101 IntroductionThe specifications used to define the performance characteristics of network devices are oftenwritten in different ways from different vendors. This makes it difficult for users to comparesimilar devices from without doing painstaking searching through manuals or hours contactingengineers from the vendors to determine how the different performance characteristics relate.This document and follow-up documents attempt to define a specific set of terminology and teststhat vendors can use to measure and report the performance characteristics of network devices.March 14, 2005 1 PUB00080R11