By synchronizing, timer JMeter spike testing can be achieved. Synchronizing timer, blocks thread until a specific amount of threads has been blocked and then release them all together thus creating large instantaneous load.
Posted Date:- 2021-10-16 06:11:59
Script creation in JMeter is somewhat different from normal automated script creation. Mostly, a script can be created by recording or using JMeter UI. Followed by parameterization of tests, correlation, and configuration of different test parameters.
Having said that, coding is required in some scenarios and can be done with Beanshell scripting.
Posted Date:- 2021-10-16 06:10:31
When it comes to testing the loading of an app, only a few users are considered then all for effectively studying the behavior of the app. This also derives a lot of useful information to know the overall performance of the app. Of course, it takes some time in making all the users in the running state. This time period is generally called the Ramp uptime. It is different from different apps depending on the overall number of users, data, and several other factors.
Posted Date:- 2021-10-16 06:07:58
The name of this element is Thread Group
Posted Date:- 2021-10-16 06:06:48
<> Using config elements like "CSV Data Set Config", "User Defined Variables", etc for greater data reuse.
<> Modularizing shared tasks and invoking them via a "Module Controller".
<> Writing your own BeanShell functions, and reusing them.
Posted Date:- 2021-10-16 06:01:52
It is basically a process of enticing the data from the previous calls and then sending it to consecutive requests in the form of parameters. It is very helpful in making the scripting easy and the good this is it cut a lot of complexity from the process of handling sessions.
Posted Date:- 2021-10-16 05:59:50
You can ensure re-usability in the following ways:
1. Using config elements like “CSV Data Set Config“, “User Defined Variables“, etc for greater data reuse.
2. Modularizing shared tasks and invoking them via a “Module Controller“.
3. Writing your own BeanShell functions, and reusing them.
Posted Date:- 2021-10-16 05:58:27
Master-Slave configuration is considered as a part of Distributed Testing in which case more than one machine is used to perform load testing of the server under test. Such that it becomes important that all machines are on the same network and all have the same version of Jmeter. Also in distributed testing, one machine is made as the Master and the others are kept as slaves by doing some configurations.
Steps to perform master-slave configuration are -
1. Edit the jmeter.properties file on the master machine, and add the IP addresses of slave machines against the remote_host field in the file.
2. Next save the file and open the Jmeter again.
3. Now from the RUN menu in Jmeter, select Remote Start and choose the IP of the machine to be invoked.
4. Choose RUN menu and select Remote Start all to start all the slave machines for testing.
Posted Date:- 2021-10-16 05:56:17
Jmeter can record HTTP or https request going to the server from your mobile application also. Therefore Mobile and Jmeter should be on the same network.
The configuration required to record actions from Mobile,
1. First configure the proxy server in JMeter to run at a specified port.
2. Second set up a proxy on the mobile wifi settings and then enter the same port number that is used in the recorder.
3. Third install the Root CA certificate on the mobile.
4. Fourth hit server request from the mobile and observe it getting captured by the specified controller.
Posted Date:- 2021-10-16 05:53:39
Co-relation is basically a process in which the values can be extracted from the server response and stored in a variable which is then then used in any other request which is to follow.
For instance in order to test any login functionality if you have to use session ID/cookie ID , you can then extract the value from the response of GET request of the login page and then dynamically use the same while making POST request for login.
Posted Date:- 2021-10-16 05:52:55
With the help of a timer, JMeter can delay the time between each request, which a thread makes. It can solve the overload problem of the server.
Posted Date:- 2021-10-16 05:52:05
Both Gaussian and Poisson Timers work on a mathematical formula with some constant delay and additional offset. Difference between the two lies in the fact that how the lambda value is calculated in the case of Poisson timer and how deviation is calculated in the case of Gaussian Timer.
Posted Date:- 2021-10-16 05:51:18
You can eliminate all embedded resources from being explicitly called. Requests have a checkbox at the bottom that says “retrieve embedded resources.†It would grab all CSS, JPG, etc. It is a brilliant way to find resources and broken link in a web App.
Posted Date:- 2021-10-16 05:50:23
Distributed load testing is the process through which numerous systems can be used for simulating a load of a large number of users. By using the master-slave configuration, JMeter can do distribute load testing.
Posted Date:- 2021-10-16 05:49:43
Normally, you can capture script by recording.
<> First, you have to Threadgroup in Testplan and then make HTTPProxyServer in Workbench.
<> After that, set port number in the Global Setting box (e.g., 8911) and modify your connection setting in IE as localhost in address 8911 as in port Then you can start http proxy server in JMeter and run your application for login.
Posted Date:- 2021-10-16 05:48:59
It depends on the hardware configuration of your system which includes a processor, JVM, allocated memory -Xmx, etc.
Other factors that impact thread count are the number of components in your test plan i.e. the number of config elements or processors and it also depends on whether you are using GUI/Non-GUI Mode.
Posted Date:- 2021-10-16 05:47:38
By synchronizing, timer JMeter spike Testing can be achieved. Synchronizing timer blocks thread until a specific amount of threads has been blocked and then release them all together thus creating large instantaneous load.
Posted Date:- 2021-10-16 05:46:47
To reduce the resource requirements in JMeter
<> Use non-GUI mode: jmeter –n –t test.jmx –l test.jtl.
<> During the load, a test doesn’t use “view results tree†or “view results in table†listeners, use them only during the scripting phase.
<> Don’t use functional mode.
<> Instead of using lots of similar samplers, use the same sampler in a loop and use the variable to vary the sample.
Posted Date:- 2021-10-16 05:46:05
Test fragment is also a type of element like Thread Group element. The only difference is test fragment is not implemented unless it is referenced by either a Module controller or an Include controller.
Posted Date:- 2021-10-16 05:44:06
Following is the execution order of the test plan elements:
1. Configuration elements
2. Pre-Processors
3. Timers
4. Sampler
5. Post-Processors (unless SampleResult is null)
6. Assertions (unless SampleResult is null)
7. Listeners (unless SampleResult is null)
Posted Date:- 2021-10-16 05:43:16
Configuration Elements allow you to create defaults and variables to be used by Samplers. They are used to add or modify requests made by Samplers.
They are executed at the start of the scope of which they are part, before any Samplers that are located in the same scope. Therefore, a Configuration Element is accessed only from inside the branch where it is placed.
Posted Date:- 2021-10-16 05:41:44
JMeter has two types of Controllers:
<> Samplers Controllers : Samplers allow JMeter to send specific types of requests to a server. They simulate a user's request for a page from the target server. For example, you can add a HTTP Request sampler if you need to perform a POST, GET, DELETE on a HTTP service
<> Logical Controllers : Logic Controllers let you control order of processing of Samplers in a Thread. Logic Controllers can change the order of request coming from any of their child elements. Some examples are: ForEach Controller, While Controller, Loop Controller, IF Controller, Run Time Controller, Interleave Controller, Throughput Controller, Run Once Controller.
Posted Date:- 2021-10-16 05:41:13
Thread Group elements are the beginning points of your test plan. As the name suggests, the thread group elements control the number of threads JMeter will use during the test.
Posted Date:- 2021-10-16 05:40:26
The protocols supported by JMeter are:
Web: HTTP, HTTPS sites 'web 1.0' web 2.0 (ajax, flex and flex-ws-amf)
Web Services: SOAP / XML-RPC
Database via JDBC drivers
Directory: LDAP
Messaging Oriented service via JMS
Service: POP3, IMAP, SMTP
FTP Service
Posted Date:- 2021-10-16 05:39:53
This test is an attempt to break the system by overwhelming its resources.
Posted Date:- 2021-10-16 05:38:41
This test is basically used for exercisingdiscovering the system under the top load it was designed to operate under.
Posted Date:- 2021-10-16 05:38:18
Basically there are two types of processors in JMeter namely Pre-Processor and Post Processor.
Pre-Processors execute before the main sampler and can change the scope of the sampler whereas Post Processors execute after the main sampler and are applicable to all samplers in the same scope of Test Plan. They can be used to extract some fields from the server response and store them in variables.
Posted Date:- 2021-10-16 05:37:43
Basically, this is done with the help of Samplers. There are several samplers that are present in the JMeter and a few of them that are used commonly are:
1. Junit request
2. JDBC request
3. HTTP request
Posted Date:- 2021-10-16 05:37:00
A JMeter thread by default will send requests continuously without any pause. Timers are used to get a pause between the request.
The different types of Timer in JMeter are:
>> Constant Timer – This element delays each request in a Thread Group for the same amount of time.
>> Gaussian Timer – This element is used to delay each user request for a random period of time.
>> Synchronizing Timer – This element is used to release number of threads at given point.
>> Uniform Random Timer – This element is used to delay each request for a random period of time.
Posted Date:- 2021-10-16 05:35:45
A JMeter thread by default will send requests continuously without any pause. To get a pause between the request, Timers are used. Some of the Timers used are Constant Timer, Gaussian Random Timer, Synchronizing Timer, Uniform Random Timer and so on.
Posted Date:- 2021-10-16 05:34:30
A configuration element works parallel with a Sampler. To set up defaults and variables for later use by samplers configuration elements can be used. At the start of the scope, these elements are processed before any samplers in the same scope.
Posted Date:- 2021-10-16 05:34:04
In the regular expression, contains indicates that the regular expression matched at least some part of the target. While matches mean the regular expression matched the whole target. So, ‘alphabet’ is “matched†by ‘al.*t.’
Posted Date:- 2021-10-16 05:33:33
A pre-processor is something that will happen before the sampler executes. To configure the sample request prior to its execution or to update variables that are not extracted from response text pre-processor elements are used.
Some of the pre-processor elements are
<> HTTP URL re-writing modifier
<> HTTP user parameter modifier
<> HTML link parser
<> BeanShell PreProcessor
Posted Date:- 2021-10-16 05:32:59
The two types of JMeter are:
<> Pre-processor
<> Post processor
Posted Date:- 2021-10-16 05:32:08
Regular Expression is used for extracting some values dynamically from the responses.These values can be used in the subsequent request or can be saved for reporting purposes. Regular Expression is used in both Pre-Processors as well as Post Processors.
Posted Date:- 2021-10-16 05:31:14
Usually, Test Plan are saved in their XML format, so there is nothing to do with any particular O.S. It can be run on any OS where JMeter can run.
Posted Date:- 2021-10-16 05:30:51
Distributed Testing means using multiple machines for load testing in which one of the machines can be made master and others can be kept as a slave. It is very important to note that all the machines should be on the same network and should have the same version of Java and JMeter.
Posted Date:- 2021-10-16 05:30:29
Samplers – Sampler generates one or more sample results. These sample results have many attributes like elapsed time, data size, etc. It allows JMeter to send specific types of requests to the server, through samplers, thread group decides which type of request it need to make. Some of the useful samplers are HTTP request, FTP request, JDBC request etc.
Thread Groups – JMeter is the beginning part of thread group elements. It is an important element of JMeter, where you can set number of users and time to load all the users given in the thread group.
Posted Date:- 2021-10-16 05:30:06
The recommendation of maximum threads on a single system is based on the hardware configuration of the system which includes a processor, JVM, allocated memory -Xmx, etc.
There are other factors as well that impact this such as the number of components in the test plan like the number of config elements or processors and it also depends on whether you are using GUI/Non-GUI Mode.
Posted Date:- 2021-10-16 05:29:36
The objective of data parametrization is to make the scripts reusable where the values need not be hardcoded for the same request with different parameters.
The data parametrization that is supported in Jmeter are -
1. CSV Data Set Config
2. User Defined Variables
Posted Date:- 2021-10-16 05:28:57
A Test Plan provides a layout of the web application as well as the client-server application. It can be viewed as a container for running tests. A complete test plan will consist of one or more elements such as thread groups, logic controllers, sample-generating controllers, listeners, timers, assertions, and configuration elements. A test plan must have at least one thread group.
Posted Date:- 2021-10-16 05:28:34
The protocols supported by JMeter are:
* Web: HTTP, HTTPS sites ‘web 1.0’ web 2.0
* Web Services: SOAP / XML-RPC
* Database via JDBC drivers
* Directory: LDAP
* Messaging Oriented service via JMS
* Service: POP3, IMAP, SMTP
* FTP Service
Posted Date:- 2021-10-16 05:28:15
Regular Expressions are used to search and manipulate text. JMeter is used for interpreting forms of regular expression or patterns being used throughout a JMeter test plan.
Posted Date:- 2021-10-16 05:27:33
Jmeter does not support the actual browser behavior as it does not render the HTML webpages as the normal browser.
Such that response can be seen in HTML format but the actual timings are not there in the generated samples.
Posted Date:- 2021-10-16 05:26:09
No, JMeter does not support the actual browser behavior. It does not render the HTML webpages as the normal browser does. The response can be viewed in HTML format but the actual timings are not present in the generated samples.
Posted Date:- 2021-10-16 05:25:53
Based on the pattern, a regular expression is used to search and manipulate text. JMeter is useful in interpreting forms of regular expression or patterns being used throughout a JMeter test plan.
Posted Date:- 2021-10-16 05:25:38
Variables and functions can be written into any field of any test component.
Posted Date:- 2021-10-16 05:25:10
JMeter acts like a group of users sending requests to a target server. It collects response from the target server and other statistics which show the performance of the application or server via graphs or tables.
Posted Date:- 2021-10-16 05:24:47
Jmeter is a Java-based open-source application that is basically designed for the purpose of Load Testing. It supports all major protocols that are supported in Load Runner. Unlike any browser, JMeter works on levels of protocols and does not execute JavaScript present in HTML web pages.
Posted Date:- 2021-10-16 05:24:18
JMeter is a Java tool, which is used for performance Load Testing.
Posted Date:- 2021-10-16 05:23:43