Jmeter Day3 Satya

8/14/2019 Jmeter Day3 Satya

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Day3Session


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Questionnaire?

1.What are the important resources to be considered before

conducting a load test?

2.What is the peak load a machine can with stand?3.Why should we distribute load ?

4.What is Soak test?

5.What is aWeb-Service?

6.List some Statistical Metrics.


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Agenda Load-Distribution

Purpose

Pre-requisites

Process Adding a Plug-in

Protocols in Jmeter

JDBC

SOAP LDAP

Listeners

Results and Analysis


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Purpose:

Load Distribution is the process of controlling load

generator machines centrally .It generates load in more

realistic manner and also give back accurate test results.

Pre-requisites:

For load distribution

Ensure that Jmeter installed in the systems is of sameversion.

The firewall on both Master and Slave systems

should be disabled.

Load Distribution:


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Architecture


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Process :

Slave Machine: Go to Jmeter > bin directory and run jmeter-server.bat

Open jmeter-server.bat and search for START rmiregistry

Replace rmiregistry with C:\j2sdk1.4.2\jre\bin\rmiregistry.

Example: START C:\j2sdk1.4.2\jre\bin\rmiregistry.

Master Machine:

OpenJmeter>bin>jmeter.properties file.

Replace remote hosts=127.0.0.1 with the IP address of

slave machine.

(For eg:172.26.3.213,172.26.2.144).


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Adding plug-in Plug-ins incorporate the feature of extensibility in the tool. To

Enhance the functionality of the tool, add the readily available

.jarfiles toD:\Jmeter\lib or D:\Jmeter\lib\extas per the

requirement.

Customization:

Download Jmeters source version to get the source code.Required tool customization can be done by this.


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Protocols

Apart from HTTP and HTTPS Jmeter supports wide range

of protocols viz JDBC ,SOAP ,LDAP .In Jmeterterminology a protocol is represented by Sampler.

Some Of them are:-

JDBC

SOAP

LDAP


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JDBC

Pre-requisites: To use MySQL driver, its .jarfile should be copied to

the JMeter lib directory.

Create a database and insert data into tables.


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JDBC

Process:

JDBC Sampler

1) Create a basic test plan to test a database server.

2) Add users to the thread group.

3) Right click on Thread Group>Add>Sampler>JDBC Request.

4) Right click on Thread group>Add>Configuration Element> JDBC

Connection Configuration.

Click on JDBC Request and give the variable name as MySQL

Select a query type

Enter the appropriate Query in the Query Field. For Example Enter Select

* from table name.


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JDBC

Connection Configuration:Click on JDBC Connection Configuration and give the following

details

Variable name : MySQL (this is the same name given in

the variable name of JDBC Request).Database URL : [jdbc]:[database type]://[hostname:

port]/[database name]i.e.

jdbc:mysql://127.0.0.1:8080/application.

JDBC Driver class: com.mysql.jdbc.DriverUsername: root ( Default user name of MySql)

Password: mysql (Default password of MySql)


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Simple JDBC Result


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Web-Service

What is a Web Service?

Web Service is a software system designed to support

interoperable Machine to Machine interaction over a

Network.

It is based on already existing and well-known HTTP

protocol.

It refers to clients and servers that communicate using

XML messages that follow the SOAP standard.


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Web-Service(SOAP)Request

Pre-Requisites:

The sampler requires mail.jar and activation.jar. This is

because Apache SOAP requires these libraries.

An application server running behind.

A Web Service deployed on the application server.

A WSDL URL to test


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Process:i) Write the functionality in java (or any other)

ii) Write build file in xml

iii) Start application server (JBoss).

iv) Deploy java files using ant

v) Web service created successfullyvi) Send SOAP request

vii) Receive SOAP response

Note:

Here is a Calculator Web service deployed in JBoss Appserver,with methods add() and subtract () is being tested usingJMETER. We use Jmeter to send the SOAP request, themethods of Web service in the Appserver process the SOAPrequest and response obtained is seen in JMETER.


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SOAP Sampler

a) Go to JBoss run.bat file to start the application server.

In the Internet Explorer type :

http://localhost:8080 to view the home page of JBoss.http://localhost:8080/jbossws/services to view list of web-

services.

b)In Jmeter go to:

Thread Group->Add->Sampler->Web Service (SOAP)Request to add Sampler.

c)Copy the URL into WSDL URL column of JMETER and

press Load WSDL.


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SOAP Request Schema:

invoking subtract method

5000 arguments passed

3000


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SOAP Response Schema:

2000 SOAP response


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Simple SOAP Result


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LDAP The Lightweight Directory Access Protocol, or LDAP is an

application protocol for querying and modifying directory

services running over TCP/IP.

A client starts an LDAP session by connecting to an LDAP

server, by default on TCP port 389. The client then sends anoperation request to the server, and the server sends responses

in turn.

Examples:

Centralized up-to-date phone book in an organization. Printers connected over network.


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There are four test scenarios of testing LDAP.

Add Test

This will add a pre-defined entry in the LDAP Server and calculate theexecution time.

Modify Test

This will create a pre-defined entry first, then will modify the created entry

in the LDAP Server. And calculate the execution time.

Search Test

This will create the entry first, then will search if the attributes are

available. It calculates the execution time of the search query..

Delete Test

This will create a pre-defined entry first, then it will be deleted from theLDAP Server. The execution time is calculated.


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ListenersA listener is a component that shows the results of the samples.

The results can be shown in the form of a tree, tables, graphs

or simply written to a log file.

Types of listeners:

Graph Results

View Results Tree

View Results in a Table

Summary Report

Aggregate Graph

Aggregate Report


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Graph Results listener:

It generates a simple graph that plots all sample times. The

throughput number represents actual number of

requests/minute the server handled + delays added to test and

JMeter's own internal processing time.

It includes:

Data - plot the actual data values

Average - plot the Average Median - plot the Median (midway value)

Deviation - plot the Standard Deviation

Throughput - plot the number of samples per unit of time


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Graph Results


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View Results Tree:

It is a tree of all sample responses, the time a sample took toget this response and some response codes.

Request panel only shows the headers added by Jmeter.

View Results in a Table:

This visualizer creates a row for every sample result.

Summary Report:The summary report creates a table row for each differently

named requestin your test. This is similar to the Aggregate

Graph, except that it uses less memory.


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View Results Tree:


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View Results In a Table:


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Summary Report:


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Aggregate report :

Creates a table row for each differently named request in the

test. For each request, it totals the response information and

provides request count, min, max, average, error rate,

approximate throughput (request/second) and Kilobytes per

second throughput.

Aggregate graph :

Is similar to the aggregate report and provides an easy way togenerate bar graphs and save the graph.


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Aggregate Report


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Aggregate Graph


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Results and AnalysisFactors involved:

Throughput

Response Time Latency

Tuning

Benchmarking

Capacity Planning


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Latency:

Is the delay caused by the application ,Operating system and

by the environment that are calculated separately.

N1

N4 N3

Network Latency = N1+N2=N3+N4

Product Latency = A1+A2+A3

Actual Response Time=Network Latency + Product Latency

clien

t

A1

Web

Serve

r

A3

DataBase

A2

ServerInte

rnet


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Tuning:

Is a method by which product performance is enhanced by

setting different values to the parameters of the Product ,O.S

and other components.

Benchmarking:Comparing various parameters of the product(e.g. response

time , throughput etc) with those of competitive products.

Capacity Planning:

Exercise to find out what resources and configurations areneeded prior to installation or upgrade of the product.


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Mean:

Sum of the samples divided by the number of samples.Performance numbers are to be reproducible. To ensure this,

all performance tests are repeated multiple times and the

average or mean is taken.

Some special cases:

a)Noise Removal and Re-plotting and re- calculating mean,

standard deviation.

b)Differentiating data that is coming from Cache and Server.


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Standard Deviation:

Standard Deviation represents how much data varies from the

mean.

S.D shows how consistently are the performance numbers

reproducible.

90% Graph:

Percentage of transactions that were performed with in a given

time range.

e.g. say if the graph shows 90 percentile against 4.5 sec means90 percentage of the times your transaction is served within 4.5

sec.


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References:http://jakarta.apache.org/

Download Jakarta 2.3.2 from

http://jakarta.apache.org/site/news/news-2008- q2.html#20080614.1.


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Queries?


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Documents

Jmeter Day3 Satya