presentation j meter

8/12/2019 Presentation j Meter

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Overview


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SUMMARY Introduction

What is Jmeter ? Why ?

Preparing tests Step 1 Proxy server Step 2 Organization Step 3 Genericity Step 4 Assertions

Running tests Non GUI mode Distributed testing

Analyzing Test


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Introduction Definition :

JMeteris an Apache Jakarta project that can be used as aload testing tool for analyzing and measuring theperformance of a variety of services, with a focus on webapplications.

Why ? :

JMeter can be used as a unit test tool for JDBC databaseconnection, FTP, LDAP, WebServices,J MS, HTTP andgeneric TCP connections. JMeter can also be configuredas a monitor, although this is typically considered an ad-hoc solution in lieu of advanced monitoring solutions.


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Proxy ServerRole

Record Http requests run byusers.

Stick to the exact httprequest a lambda user .

Record only what ismeaningful.

To be organized. Warning

Doesnt record https.


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OrganizationThread groups Loop controllers

Determine

How many users, willconcurrently run the tests

How long between 2 launchof the test

How many times the testswill be run

Determine in a thread group

How long between 2 launchof the same sampler

How many times the set of

tests will be run.


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OrganizationThread groups Loop controllers


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OrganizationThroughput Controller

Make variable pause duringthe test run to simulate bettera client behavior.

Because the thread groupdoesnt take in count the

server, can take severalseconds before responding.


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GenericityVariabilisation :

In order not to modify a test to run it on differentmachines

Example : user and password changing from a shelf to another


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Genericity Http default Request

Allows you to put a default ip port and path for all theHttp Request contained in the scope

Gives you an easy way to run your test from a device toan other one just by changing the default adress.


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Genericity Regular Expression extractor

If the data has to be used several times along the test

Like a sessionId for instance.


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Assertions Response assertion

To match a pattern in the response code

The response code for instance.

Xpath assertion

Using the DOM of the response to check if an elementappear.

A research result for instance. Size assertion

To know if the size of the response received match withthe size expected

To verify if the file received is the good one.


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Distributed testingWhy ?

To simulate stressed environment with a lot of clients.

How ?

Edit remote_hosts=127.0.0.1 in jmeter.properties

Start jmeter_server.bat on the host machines

Run jmeter.bat


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Analyzing TestAggregated graph Result tree

Gives all the statisticsconcerning the tests

May be recorded in aspecified file for furthertreatment (data mining)

Gives in a tree form, all thesamplers results, therequests, and the samplerdata.

May also be recorded in aspecified file for further

treatment


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Analyzing TestAggregated graph Result tree

presentation j meter

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