Jmeter Day3 Satya
Transcript of 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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