Distributed Load Testing with JMeter (2023)

Distributed Testing with JMeter

When one JMeter client is not able to offer amount of threads required for load testing then distributed testing is used. In distributed testing -

  • One instance of JMeter client can control number of JMeter instances and collect data from them

  • Test plan does not need to be copied to each server, the client sends it to all servers

note - JMeter will run all the threads on all the servers, hence 100 threads on 5 JMeter server would pump 500 threads in total.

If many server instances are used, the client JMeter can become overloaded and so the client network connection. This has been improved in latest versions of JMeter by switching to Stripped modes, but you should always check that your client is not overloaded

When Client (master) and Server (slave) nodes are on same network (no SSH required)

Configure Client Node

Herein client is referred as the machine controlling test execution on other JMeter nodes. This is also referred as “master node” since it controls the test execution while “server Node” are referred as “slave node” since they execute the actual test

Distributed Load Testing with JMeter (1)

Image Source - http://gerardnico.com/

Add Server IP to Client Properties file

Edit property - /bin/jmeter.properties in client JMeter machine, find property “remote_hosts” and add value of JMeter servers IP address. Multiple servers can be added comma-delimited.

A more convenient way to specify remote host is from command line. Use -R command line to specify which remote host to use (example described below).

Specify client RMI port

Specify client.rmi.localport in jmeter.properties file (for example - client.rmi.localport=25000). This is the port on which the local JMeter instance will listen for the Remote Method Invocation (i.e. RMI connections) from the slave nodes. Results would be sent to client from slave nodes on this port

Configure Server Nodes

      • Server nodes should be running same version of JMeter and java as client
      • Test datafiles are not sent across by client, hence they should be available in appropriate directory in each server. You can keep test data file in /bin folder in each JMeter server. It gets you rid of specifying full qualified path of test data file on each server instance.
      • To use different values for properties use corresponding values for user.properties and system.properties on each server
      • server.rmi.localport- By default, RMI uses a dynamic port for the JMeter server engine. This may cause issues with firewalls, so with versions of JMeter after 2.3.2 you can define the JMeter property server.rmi.localport to control this port number. To use a specific port for the JMeter server engine, define server.rmi.localport property before starting the server

Start Server

JMeter server component is available in following directory -

    • unix/mac - JMETER_HOME/bin/jmeter-server

    • Windows - JMETER_HOME/bin/jmeter-server.bat

and start server as -

unix/mac -

./jmeter-server -Djava.rmi.server.hostname=10.161.142.227

windows -

jmeter-server.bat -Djava.rmi.server.hostname=10.161.142.227

java.rmi.server.hostname is specified when starting the server, else you may end up with “loopback address” error.

On starting server you would receive message like -

Created remote object: UnicastServerRef [liveRef: [endpoint:[10.161.142.227:60000](local),objID:[-1c51de21:14fd1765827:-7fff, 7690653623616494857]]]

Herein endpoint is IP - 10.161.142.227(the IP address of server node) with port 60000 (this is server.rmi.localport specified during server node configuration)

Note that you would have to chmod +x on /jmeter-server and /jmeter-server files before you can start jmeter-server file on unix

There can be only one jmeter server on each node unless different RMI ports are used

Check Configuration

Start JMeter client > Remote Start and Remote Stop should contain the client set in properties file -

Distributed Load Testing with JMeter (2)

Start JMeter in non GUI mode

Start test on remote server in non GUI mode as -

jmeter -n -t script.jmx -r

Herein flag -r is to Start remote servers (as defined in remote_hosts property on the master no). Hence this command will start test on remote_hosts

(Video) Distributed Load testing - JMeter Tutorial 21

As specified earlier, a more convenient way to execute tests on remote server is to specify server from command line as following -

jmeter -n -t script.jmx -R server1,server2...

If you want to exit remote server after test is over then use flag -X as following -

jmeter -n -t script.jmx -R server1,server2 -X

When Client (master) and Server (slave) nodes are on different networks (SSH required)

When running test from remote server machines (i.e. aws or google cloud), we need to establish ssh tunneling to make servers available to jmeter client machine. Herein communication between jmeter client and servers is established using JMeter connection and Remote Method Invocation (RMI).

JMeter connection is started by JMeter client (master node) while TCP connection for RMI is started by both JMeter client (master node) and servers (slave node). Hence it results in creation of three connections -

Distributed Load Testing with JMeter (3)

We will use ssh port forwarding (or ssh tunneling) to establish connection b/w JMeter client and server. We will use the localhost address and forward certain ports.

As illustrated above, two connections are required from “L”ocal JMeter client to remote server while one connection is required from “R”emote JMeter server(s) to local JMeter client. Hence we create three tunnels, two out going (“L”ocal JMeter client to remote servers) and one incoming (“R”emote JMeter server to local client)

Following command will set up forwarding on three ports -

ssh -L 24001:127.0.0.1:24001 \

-R 25000:127.0.0.1:25000 \

-L 26001:127.0.0.1:26001 -N -f <username>@<server>

Distributed Load Testing with JMeter (4)

Of course, you would not be pumping load from just one JMeter server, you can set up more ssh tunnelling as -

ssh -L 24002:127.0.0.1:24002 \

-R 25000:127.0.0.1:25000 \

-L 26002:127.0.0.1:26002 -N -f <username>@<server>

and so on…

-N and -f options are used since you only need to set up SSH port forwarding and will not execute remote commands. Hence you will not get shell to execute commands.

Port forwarding syntax - 24001:127.0.0.1:24001 may seem a little confusing. Herein 127.0.0.1 means localhost (i.e. 127.0.0.1) from the server perspective and not your machine. It means forward my localport 24001 to port 24001 on server. Hence it is -

ssh -L LocalPort:RemoteIP:RemotePort User@RemoteIP

For 26001:127.0.0.1:26001 - First you need to specify the port on which the remote server will listen, which in this case is 26001, and next follows localhost for your local machine, and the local port, which in this case is 26001.

Configure Client -

Now configure jmeter.properties file in JMeter client as -

remote_hosts=127.0.0.1:24001 (can also be specified from command line using -R option as specified earlier)
client.rmi.localport=25000 (the port on which results are collected and connection established by one of the RMI)
mode=Statistical

Notice that we define mode of data transfer on client (master) machine and not on slave machine. This is according to jmeter properties file -

# How is Sample sender implementations configured:

# - true (default) means client configuration will be used

# - false means server configuration will be used

#sample_sender_client_configured=true

If you want slave machine to decide (probably you would never want that) on mode of sampling then set `sample_sender_client_configured` to false and set mode on each slave machine.

Using any mode which writes results back to master would eventually affect the max throughput of test. According to JMeter -

(Video) Distributed Load Testing on AWS using JMeter

<<

Listeners in the test plan send their results back to the client JMeter which writes the results to the specified files By default, samples are sent back synchronously as they are generated. This can affect the maximum throughput of the server test; the sample result has to be sent back before the thread can continue.

>>

Hence I use mode DiskStore or StrippedDiskStore to have test results sent back to client after test run. Given that you would not have test results being sent to client machine till end of test run, you would like to print result summary on client to know summary of results during test run. Since jmeter version 2.13 I did not have to do anything extra to get summary of test result printed on console :-)

In DiskStore/StrippedDiskStore mode result is saved in java.io.tmpdir. Notice that slave jmeter instance should have permission to write to this file (/tmp or /var/tmp in unix system) else following message would be logged in jmeter-server.log file -

jmeter.samplers.DiskStoreSampleSender: Using DiskStoreSampleSender for this test run

ERROR - jmeter.samplers.DiskStoreSampleSender: Failed to create output file java.io.IOException: Permission denied

at java.io.UnixFileSystem.createFileExclusively(Native Method)

at java.io.File.createNewFile(File.java:1006)

at java.io.File.createTempFile(File.java:1989)

at java.io.File.createTempFile(File.java:2040)

at org.apache.jmeter.samplers.DiskStoreSampleSender.readResolve(DiskStoreSampleSender.java:157)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:606)

at java.io.ObjectStreamClass.invokeReadResolve(ObjectStreamClass.java:1104)

at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1807)

at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)

at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1990)

at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1915)

at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)

To overcome this you can specify your own directory which should be used to used to save test result when starting the jmeter server on slave -

./jmeter-server -Djava.rmi.server.hostname=127.0.0.1 -Dsun.net.inetaddr.ttl=0 -Djava.io.tmpdir=/home/<user>/testresult

Notice that you would have to create directory if it does not exist. In the following section of this post there are some shell script which could do this for you.

Once the test execution is over then test results would be sent back to jmeter client and stored in the file which was specified using -l parameter when starting the test.Be patient, it takes time for test results to be sent back to client machine ;-) You can verify n/w activity on client machine usingiftop -ncommand once test execution is over. You would usually see higher n/w activity which is an indication of test results being sent to Client machine.

Once all test results have been transferred then you should see following message in client console -

summary + 117 in 5s = 23.4/s Avg: 13 Min: 8 Max: 30 Err: 0 (0.00%) Active: 0 Started: 704 Finished: 720

summary = 181813 in 1027s = 177.0/s Avg: 590 Min: 7 Max: 4464 Err: 0 (0.00%)

Tidying up remote @ Tue Feb 16 15:03:05 CET 2016 (1455631385107)

... end of run

Once test results is transported to client then you can plot graph using jmeter listeners.

If you have highly responsive server then you may end up with following error on jmeter-server.log -

jmeter.threads.JMeterThread: Test failed! java.lang.OutOfMemoryError: GC overhead limit exceeded

Then it is time to reduce thread count or user more powerful test agent till this error disappears.Notice thatthis error is different than usual Out of memory error in jmeter which can be fixed by setting JVM memory arguments in jmeter.sh file. To know more about GC overhead limit exceeded error followSO thread

We had described other properties earlier, except mode. It specifies how results are sent back from server to client. Statistical mode results in reduction of data transfer between server and client hence helps in not overloading JMeter client machine.

Configure Server -

Now configure jmeter.properties file in JMeter server as -

server_port=24001 (port used by JMeter connection. This connection is started by only JMeter client, see SSH tunnelling client above)
server.rmi.localhostname=127.0.0.1
server.rmi.localport=26001 (a second port on which connection is established using RMI)

(Video) 0043 - 📈 Guide to Load testing with JMeter - Distributed load generators tutorial

Notice that port numbers 24001 and 26001 are the ones on which port forwarding is established from local JMeter client to remote JMeter servers.

I did not find property server.rmi.localhostname in JMeter version 2.13, hence added it myself in jmeter.properties file.

Start the remote Server -

When starting JMeter server you need to tell JMeter to user localhost (127.0.0.1) as its RMI server -

bin/jmeter-server -Djava.rmi.server.hostname=127.0.0.1

This starts JMeter server and accepts connections from JMeter client.

Now you can start test from jmeter client and specify localhost as RMI server -

jmeter -n -t script.jmx -R 127.0.0.1:24001, 127.0.0.1:24002 -Djava.rmi.server.hostname=127.0.0.1

And then you would see following message on JMeter client -

Created the tree successfully using <Your_Test_Plan>.jmx

Configuring remote engine: 127.0.0.1:24001

Configuring remote engine: 127.0.0.1:24002

Starting remote engines

Starting the test @ Mon Nov 09 15:36:53 CET 2015 (1447079813692)

Remote engines have been started

Waiting for possible shutdown message on port 4445

summary + 3 in 6s = 0.5/s Avg: 139 Min: 58 Max: 191 Err: 0 (0.00%) Active: 1 Started: 2 Finished: 1

summary + 122 in 1s = 214.4/s Avg: 72 Min: 54 Max: 289 Err: 0 (0.00%) Active: 0 Started: 2 Finished: 2

summary = 125 in 6.1s = 20.3/s Avg: 74 Min: 54 Max: 289 Err: 0 (0.00%)

Tidying up remote @ Mon Nov 09 15:37:01 CET 2015 (1447079821532)

... end of run

And following on JMeter server -

Starting the test on host 127.0.0.1:24001 @ Mon Nov 09 12:28:20 UTC 2015 (1447072100754)

Finished the test on host 127.0.0.1:24001 @ Mon Nov 09 12:28:26 UTC 2015 (1447072106728)

that’s all :-)

Tips:

  • I got following error when establishing ssh tunnel using command -

<ssh -L 24001:127.0.0.1:24001 -R 25000:127.0.0.1:25000

-L 26001:127.0.0.1:26001 -N -f tbhadauria@10.145.53.224>

<<Warning: remote port forwarding failed for listen port 25000>>

I updated client.rmi.localport to 24000 in jmeter.properties file of Client JMeter and changed the port 25000 to 24000 in the above command above and error disappeared. Refer SO post for more on this error.

  • SSH tunnelling to multiple servers -

The process of establishing ssh tunnelling and launching individual server may become tedious when you have high number of load test agents. To overcome this, I created following crappy shell script which establishes ssh tunnelling and launches Jmeter server on remote servers -

#######################################################

local_port_begin_index1=240

local_port_begin_index2=260

#server_port is the server ip address followed by port end index used in subsequent script

for server_port in 10.145.53.223-01 10.145.53.224-02 10.145.53.225-03 10.145.53.84-04 10.145.48.204-05 10.145.48.202-06 10.145.48.203-07 10.145.50.42-08 10.145.50.41-09 10.145.50.40-10; do

server=$(echo $server_port|cut -f1 -d-)

port_end_index=$(echo $server_port|cut -f2 -d-)

local_to_remote_port1=$local_port_begin_index1$port_end_index

(Video) JMeter Intermediate Tutorial 8 - How to build a Distributed Load Test (Throughput Controller)

local_to_remote_port2=$local_port_begin_index2$port_end_index

$local_to_remote_port2:127.0.0.1:$local_to_remote_port2

# start jmeter server on remote instance

ssh tbhadauria@$server 'bash -s' < startserver.sh

# set up ssh tunnelling to JMeter servers

ssh -L $local_to_remote_port1:127.0.0.1:$local_to_remote_port1 -R 24000:127.0.0.1:24000 -L$local_to_remote_port2:127.0.0.1:$local_to_remote_port2 -N -f tbhadauria@$server

done

#######################################################

And shell script startserver.sh looks as -

#######################################################

# quit existing screens

for session in $(screen -ls | grep -o '[0-9]\{4\}')

do

screen -S "${session}" -X quit;

done

#create directory for testresult

rm -r testresult/

mkdir testresult/

chmod 777 testresult/

# start jmeter server

screen -d -m -S loadtest; screen -S loadtest -X stuff "cd apache-jmeter-2.13/bin/;./jmeter-server -Djava.rmi.server.hostname=127.0.0.1 -Dsun.net.inetaddr.ttl=0 -Djava.io.tmpdir=/home/tbhadauria/testresult;"`echo -ne '\015'`;

#######################################################

  • Specify parameters from command line -

We have learned that we can specify parameters from command line using ‘-J’ literal. But during distributed testing we should use literal ‘-G’

hence if you use customer property i.e. -

-JCUSTOMERS_DURATION=1800 \

then it changes to -

-GCUSTOMERS_DURATION=1800 \

Notice that default JMeter property would remain as it is -

-Jjmeter.save.saveservice.output_format=csv \

The overall JMeter property configuration looks as -

-D[prop_name]=[value] - defines a java system property value.

-J[prop name]=[value] - defines a local JMeter property.

-G[prop name]=[value] - defines a JMeter property to be sent to all remote servers.

-G[propertyfile] - defines a file containing JMeter properties to be sent to all remote servers.

-L[category]=[priority] - overrides a logging setting, setting a particular category to the given priority level.

The -L flag can also be used without the category name to set the root logging level.

Further Reading -

FAQs

Can distributed testing is done by JMeter? ›

Distributed testing enables having a local JMeter (master) that handles the test execution, together with multiple remote JMeter instances (slaves) that will send the request to our target server. But before being able to run JMeter in a distributed way, there are a couple of simple steps you must perform.

What are the limitations of JMeter? ›

Limited support: JMeter doesn't support ajax, javascript etc. We can't render it like a browser so we can't run the Javascript in the web application. It has limited support for the flash and other scripting languages, which will affect the accuracy of the application.

Is JMeter difficult? ›

Friendly GUI: JMeter is extremely user-friendly therefore easy to use and doesn't take time to get familiar with it. Full multithreading framework. JMeter allows concurrent and simultaneous sampling of different functions by a separate strand group.

Which tool is best for load testing? ›

Top 10 Load Testing Software
  • SOAPUI.
  • Apache JMeter.
  • Micro Focus LoadRunner Cloud.
  • k6.
  • LoadView.
  • Micro Focus Silk Performer.
  • LoadNinja.
  • Tricentis Neoload.
14 Nov 2022

What Cannot be tested by JMeter? ›

JMeter is NOT a browser and works at the protocol level. This makes it difficult when trying to run performance tests from the user's perspective. For example, JMeter does not support JavaScript, and therefore, cannot support AJAX requests, so in this case, JMeter can only simulate HTTP traffic.

How do you solve a distributed load? ›

You calculate each force separately and then use a weighted equation to find the total distance the force acts from a point that you select. F = w d Sometimes called intensity, distributed loads have units of force over distance: N/m or lb/ft.

What is an example of a distributed load? ›

A continuously distributed external force is referred to as a distributed load. For example, the weight of a pile of snow on a roof is distributed over the area of the roof (Fig. 3.33). This means every unit of area bears some part of the total weight of the snow pile on the roof.

Which is better postman or JMeter? ›

I find JMeter a better fit for complexity, strong scripting, CICD inclusion, simple end-point, total load, and performance testing, allowing test re-use. Keep in mind, both tools can perform all of the above operations.

Can we run 1000 users in JMeter? ›

This depends on the test plan and the number of listeners, but users have reported successfully running 1000 threads in a single JMeter instance. Also, note that JMeter can place a much higher load on a system than a human user can, as it can make requests much faster.

What is the maximum load in JMeter? ›

In conclusion, we can say that you can simulate up to 10,000 users on a JMeter load test even on a regular laptop. This depends on following 4 simple rules: Use JMeter listeners for debugging purposes only. Run JMeter performance tests in non-GUI mode.

Which tool is better than JMeter? ›

Loadrunner from Micro Focus is a widely used Load Testing tool. It is one of the best alternatives to JMeter that offers a user-friendly monitoring and analysis interface with colored charts and graphics. Features: Supports continuous testing.

How many days it will take to learn JMeter? ›

JMeter Tutorial for Beginners: Learn in 7 Days.

Does JMeter need coding? ›

Knowledge: Jmeter does not require extensive programming knowledge.

Do we need coding for JMeter? ›

The major important thing is for JMeter is that there is no need to have any coding skills. Advantages of JMeter API: Open source. Quick API testing.

Which is better LoadRunner vs JMeter? ›

The LoadRunner is more efficient and faster to detect the bus present in the application compared to JMeter software. All the system-level performance information can be collected using the LoadRunner software.

Which is best Selenium or JMeter? ›

The main difference between JMeter and Selenium is that JMeter is best for load and stress testing while Selenium offers full test automation and cross-browser testing. Read on to learn more about the differences!

Is JMeter a load testing tool? ›

What is JMeter? The Apache JMeter is an open-source, purely Java-based software. The software is used to perform performance testing, functional testing, and load testing of web applications. It is used to test load testing functional behavior and measuring performance.

How do you run a JMeter in 30 minutes? ›

1 Answer
  1. Tick Infinite box next to "Loop Count"
  2. Tick Specify Thread Lifetime box and provide the desired test duration (for example below setup gives you another 30 minutes with 1500 users)
16 Oct 2020

Is JMeter outdated? ›

While JMeter is considered old technology, it is still being developed and enhanced in line with technology changes.

What are the challenges you faced in JMeter? ›

How to Solve 3 Issues With JMeter Scripts
  • The Console Freezes. The JMeter testing console running in GUI mode can consume a lot of CPU and memory. ...
  • The Console Doesn't Collect Engine Data (it's frozen again) - Using Distributed Architecture. ...
  • The Engine is Running Out of Memory.
10 Jun 2021

What are types of distributed loads? ›

Pressure, load, weight density and stress are all names commonly used for distributed loads. Distributed load is a force per unit length or force per unit area depicted with a series of force vectors joined together at the top, and will be designated as w(x) to indicate that the distributed loading is a function of x.

Why do we test distributed load? ›

Distributed load testing allows you to mimic the same behavior at different times against your environment outside of your own network. You first created a functional test. You added some data to it, to make it more realistic. Then, you could generate a scenario with a bunch of test steps.

What is distributed load testing how can it be achieved? ›

Distributed load testing is running a test on several different computers at a time. It makes possible simulating a large number of virtual users and involves generating a lot of traffic. That is why using a single computer is not enough.

What causes a distributed load? ›

Distributed loads are forces which are spread out over a length, area, or volume. Most real-world loads are distributed, including the weight of building materials and the force of wind, water, or earth pushing on a surface.

What does a distributed load mean? ›

What is a Distributed Load? • A load applied across. a length or area. instead of at one. point.

What is a good example of a distributed application? ›

One example of a distributed application is an e-commerce platform that distributes different functions of the application to different computers in its network. The servers or computers host different functions, such as the following: Accept payment from customers at checkout.

Which tool is best for API performance testing? ›

Top 15 API Testing Tools on the Market
  • Katalon Studio. ...
  • Postman.
  • Apigee.
  • JMeter. ...
  • Rest-assured.
  • Assertible.
  • Soap UI.
  • Karate DSL.

Does JMeter need JDK or JRE? ›

Because JMeter uses only standard Java APIs, please do not file bug reports if your JRE fails to run JMeter because of JRE implementation issues. Although you can use a JRE, it is better to install a JDK as for recording of HTTPS, JMeter needs keytool utility from JDK.

Is Java mandatory for JMeter? ›

There is just one prerequisite for downloading and installing JMeter: to have Java installed in your system.

How do I run a 1 hour JMeter test? ›

First will try if this could be achieved with a single machine available to you.
  1. You need to create the users in advance or create them before the test within a Setup Thread Group.
  2. Create a CSV file with the 5000 users' credentials.
  3. Read the data from the CSV file using CSV Data Set config element.
28 Dec 2020

How many threads JMeter can handle? ›

JMeter allows you to run multiple processes in the same box, and it's usually pretty reliable generating up to 200 threads per JMeter instance. If you need more than that, I'd recommend using multiple JMeter instances. A modern machine with some tweaking can easily generate 500 to 1000 threads.

How much memory does JMeter need? ›

RAM: At least 16Gb RAM, 32GB recommended. Avoid using more than 50% RAM. ECC RAM is not really required, it provides only a marginal stability improved for long running applications. Also, RAM speed has little to no effect on performance.

What are the limitations of load test? ›

Disadvantages of Load Testing

Load test script creation requires scripting knowledge of the language supported by the tool. Incorrectly configured or scripted load test plan/script can lead to false performance issues which take a considerable amount of time and resources.

What is 99th Percentile in JMeter? ›

99% Line (99th Percentile) means 99% of the samples took NO MORE THAN this time.

Is higher throughput better in JMeter? ›

Throughput is the significant way of finding the performance of the application, higher the throughput good result is considered although throughput may vary from the number of threads per second. Throughput is considered as the number of requests sent to the server per second.

Which testing tool is in demand 2022? ›

LambdaTest is by far one of the best automation testing tools for 2022 because of its ability to run automated Selenium scripts on a scalable cloud grid. This cross-platform web and application automated testing tool also allows testers to perform interactive live testing on 2,000+ real web browser environments.

Which testing is most popular? ›

  1. Selenium. Selenium is arguably the most popular automated software testing tool among web developers and testers. ...
  2. Appium. Appium is an automated software testing tool for use with native, hybrid, and mobile web apps. ...
  3. Katalon Studio. ...
  4. Cucumber. ...
  5. Eggplant Functional.

Which is easy JMeter or Selenium? ›

JMeter and Selenium are both used for web application testing. But the main difference is that JMeter is mostly used to test the performance of web applications under load and stress. On the other hand, Selenium is best suited for automation and cross browser testing of a website.

Which language is used in JMeter? ›

The Groovy language is used as a scripting language for JMeter. When it comes to improving JMeter's functionality, Groovy has proven to be a powerful, and yet lightweight, language in terms of performance.

How much Java is required for JMeter? ›

JMeter is a pure Java desktop application. It requires a fully compliant JVM 6 or higher. You need to download and install the latest version of Java SE Development Kit.

Is JMeter free or licensed tool? ›

Free of cost: JMeter is an open-source application that has no licensing cost. Performance testing of applications: The application is used to perform performance testing on different types of applications, like Web applications, web services, LDAP, database, and shell scripts.

Is JMeter a DevOps tool? ›

Apache JMeter is an open source load testing tool. It is designed to measure the performance of websites. This load testing tool can be used in DevOps methodology.

Is JMeter A automation tool? ›

Page - JMeter. A range of automated testing tools are existing in the market to test application features in real time. We use Apache JMeter automation tool to perform load test and measure performance of web sites. Apart from the above we also offer performance, stress and scalability.

Does JMeter use Selenium? ›

Jmeter can be integrated with Selenium via WebDriver Plugin support. Download the plugin and copy the jars in your “lib” folder and “ext” folder. The WebDriver sampler comes with config elements plugins for IE, Chrome, Mozilla and other browsers so that they can be invoked via selenium code written in your sampler.

Is Selenium and JMeter are same? ›

JMeter and Selenium are both used for web application testing. But the main difference is that JMeter is mostly used to test the performance of web applications under load and stress. On the other hand, Selenium is best suited for automation and cross browser testing of a website.

Is JMeter completely free? ›

It is free, very intuitive and has all the possibilities you need to automate your work. Another big advantage of JMeter: open source. You can download the source and make modifications to it if you like.

How pass JMeter test data? ›

1. Using External Files
  1. Name. Theelement name as it will be used in the JMeter tree.
  2. Filename. The name of the input file. ...
  3. File Encoding. Encoding of input file, if it's not the platform default.
  4. Variable Names. ...
  5. Ignore First Line. ...
  6. Delimiter. ...
  7. Allow Quoted Data. ...
  8. Recycle on EOF.
31 Mar 2021

What type of tests can be done using JMeter? ›

The Apache JMeter is an open-source, purely Java-based software. The software is used to perform performance testing, functional testing, and load testing of web applications. It is used to test load testing functional behavior and measuring performance.

Which testing is used for distributed systems? ›

Distributed and Non-Distributed Testing

On the contrary, distributed testing means that a test consists of several parts and each of them is performed on a separate computer. However, the term “distributed” means not only a simultaneous run of tests on a number of machines, which is specific for parallel testing.

How do you test a distributed system? ›

How do you test your distributed system?
  1. Unit test: testing the classes and the code.
  2. Integration test: testing a service with its attached resources.
  3. End to end/ functional test: testing how different system components and services work together.
13 Jun 2018

What is distributed testing? ›

Distributed testing is applied for testing web sites and server applications when they work with multiple clients simultaneously. Distributed tests consist of two or more parts performed on different workstations in the network.

Why JMeter is better than LoadRunner? ›

In addition to easier configuration of elements, JMeter doesn't require adding beginning or ending transaction elements, which LoadRunner does. In LoadRunner, arranging scripts takes up more time and resources, and it is more complex because it requires managing different agents.

What are the 4 types of testing data? ›

Some of the types of test data included in this method are valid, invalid, null, standard production data, and data set for performance.

Why do we do distributed testing? ›

Distributed Testing is a kind of testing which use multiple systems to perform Stress Testing. Distributed testing is applied for testing websites and server applications when they are working with multiple clients simultaneously.

What are the four 4 types of systems tests? ›

There are four main stages of testing that need to be completed before a program can be cleared for use: unit testing, integration testing, system testing, and acceptance testing.

What are three issues of a distributed system? ›

Issues in Distributed Systems
  • the lack of global knowledge.
  • naming.
  • scalability.
  • compatibility.
  • process synchronization (requires global knowledge)
  • resource management (requires global knowledge)
  • security.
  • fault tolerance, error recovery.

What are two common issues in distributed systems? ›

  • Heterogeneity : Heterogeneity is applied to the network, computer hardware, operating system and implementation of different developers. ...
  • Openness: The openness of the distributed system is determined primarily by the degree to which new resource-sharing services can be made available to the users.

What is an example of distributed? ›

Telephone and cellular networks are also examples of distributed networks. Telephone networks have been around for over a century and it started as an early example of a peer to peer network.

What port does JMeter use? ›

By default, JMeter uses the standard RMI port 1099. It is possible to change this. For this to work successfully, all the following need to agree: On the server, start rmiregistry using the new port number.

Videos

1. JMeter tutorial 19 - How to perform Remote/Distributed Testing JMeter | Master Slave Mechanism
(Quality Assurance Lab)
2. JMeter Beginner Tutorial 28 - Remote Testing | Master Slave | Distributed Testing
(Automation Step by Step)
3. Distributed Load Testing Using Jmeter and Locust | MediaAgility’s Tech Talk Tuesdays Week 22
(MediaAgility - Part of Persistent Systems)
4. Jmeter Remote Distributed Load Testing Demo (Master Slave Jmeter Apache Load Test )
(がでぃあんちゃん)
5. Learn JMeter Series #62 - Distributed Load Testing using VirtualBox
(QAInsights)
6. Online Webinar - Distributed Load Testing with JMeter
(Testinium)
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