jmeter performance testing your webapp 1203622239433273 3

8/8/2019 Jmeter Performance Testing Your Webapp 1203622239433273 3

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JMeter(http://jakarta.apache.org/jmeter/)

A tool for performance testing your webapp

Amit Solankihttp://[email protected]


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Testing - Performance/Load/Stress

Performance testing how fast an app performs under a particular workload validation, verication of quality attributes (scalability, reliability, resource

usage) demonstrates that the system meets performance criteria Load Testing

modeling the expected usage by simulating multiple users accessing the webservices concurrently

raised beyond normal usage - stress testing

Stress Testing determination of stability of an application tries to break the app by overwhelming its resources


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Before starting

What is our anticipated average number of users (normal load) ? What is our anticipated peak number of users ? When is a good time to load-test our application (i.e. off-hours or week-ends),

bearing in mind that this may very well crash one or more of our servers ?

What is the testing intended to achieve? Sequential

functional (low-volume) benchmark (the average number of users)

load-test (the maximum number of users) test destructively (what is our hard limit?)


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JMeter - Introduction

Features 100% pure java, open source desktop application originally developed by Stefano Mazzocchi designed for functional/load/performance/stress testing Extensible write your own test Simulate heavy load (application, server and network) Gives instant visual feedback distributed testing various protocols - HTTP, FTP, JDBC, JMS, LDAP, SOAP multi-platform Full multithreading framework Caching and ofine analysis/replaying of test results.


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Application Overview

GUI, command line interface Tests can be run and analyzed interactively, or run in batch

mode and analyzed ofine

Test plans consist of Thread groups : organize threads of execution Samplers : sends requests to a server Logical controllers : control ow of test plan (loops, conditionals,

ordering, etc.)

Listeners : record, summarize and display record and response data Timers : introduce delays in test plan

Assertions : assert facts about responses, for functional testing Conguration elements Pre-processors and post-processors


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Testing Process

Plan TestCreate Thread

GroupCreate Test

Script Run Test Plan Analyze Result

Thread GroupScheduler

SamplersTimers

ListenersTest Plan


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Elements of test planThread group

Samplers

Logic Controllers

Listeners

Timers

Assertions

Pre-Processor Elements

Post-Processor Elements

Conguration Elements


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Demo


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Distributed Testing

jmeter -server192.168.1.6

jmeter192.168.1.2







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Distributed Testing (contd...)

Check : -

rewalls turned off jmeter & jmeter -servers on same subnet jmeter can access all jmeter -servers same version of jmeter on all systems


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Drawbacks

Complex terminology

Manual distributed execution Graphic representation quite confusing Difcult to build for beginners


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Thank You!!!

jmeter performance testing your webapp 1203622239433273 3

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