Can someone please give me an explanation of AJAX Defaults Config or what is the role of it in Jmeter?
I tried to search for an answer in Google but I can't find a definite definition of it.
As of JMeter 5.1.1 there is no such a thing as AJAX Defaults Config in JMeter Components so most probably you're using some form of JMeter Plugin which is not publicly available. If this is the case you should reach out to the plugin developers/maintainers for the clarification.
For the vanilla JMeter, as per JMeter project main page:
JMeter is not a browser, it works at protocol level. As far as web-services and remote services are concerned, JMeter looks like a browser (or rather, multiple browsers); however JMeter does not perform all the actions supported by browsers. In particular, JMeter does not execute the Javascript found in HTML pages. Nor does it render the HTML pages as a browser does (it's possible to view the response as HTML etc., but the timings are not included in any samples, and only one sample in one thread is ever displayed at a time).
Therefore JMeter is not capable of automatically execute AJAX requests because J letter stands for JavaScript
If you need to properly simulate AJAX requests you need to add a separate HTTP Request sampler per AJAX call and put them under Parallel Controller to ensure
Related
I am using "Retrieve all Embedded resources" advanced option to retrieve all static content.
It work fine but does not retrieve below .js. Is there any Filter or option in JMeter to get below files ?
I don't see any "below .js", just in case be aware of the following limitation:
As per JMeter project main page:
JMeter is not a browser, it works at protocol level. As far as web-services and remote services are concerned, JMeter looks like a browser (or rather, multiple browsers); however JMeter does not perform all the actions supported by browsers. In particular, JMeter does not execute the Javascript found in HTML pages. Nor does it render the HTML pages as a browser does (it's possible to view the response as HTML etc., but the timings are not included in any samples, and only one sample in one thread is ever displayed at a time).
so if an "embedded resource" is being triggered by the client-side JavaScript - JMeter won't be able to process the JavaScript hence won't download the associated piece of content. If this is your case - you will need to download it using a separate HTTP Request sampler and put both "main" HTTP Request and the second one under the Transaction Controller to get the cumulative time. If there are multiple occurrences of such assets - put them under a Parallel Controller
How to get the page load time of an application which has n number of CSS, js, images, etc? How to do the configuration in JMeter?I have tried integrating selenium, but I can only find the scenario load time not the exact load time of a page.
There is a special setting responsible for parsing the DOM and retrieval of so called "embedded resources": images, CSS, JavaScript, sounds, fonts, etc.
It lives under "Advanced" tab of the HTTP Request sampler
If you have more than one HTTP Request sampler - consider adding HTTP Request Defaults configuration element, if you define the setting there - it will be applied to all HTTP Request samplers in the HTTP Request Defaults scope.
You can use Dmitri T's solution, but I think that solution is to simulate new users every time. You need to treat Jmeter as a protocol tool rather than a smart fully featured browser. I suggest you do scripts recording and put parallel controller in place and put recorded scripts under the parallel controller.
You need to make sure you understand each time a page is loading, which ones are cache, which ones are not. Using recording scripts to add them under parallel controller, I think you can download the parallel controller in Jmeter plugin manager..
How to find the exact time taken for my web page to load using jmeter? Since i am getting 3 sec as response time but manually it takes more than that to load the page.
Most likely you didn't check Retrieve All Embedded Resources box in the HTTP Request sampler (or even better HTTP Request Defaults) so your request basically gets only HTTP response but doesn't resolve any nested content (images, styles, scripts, fonts) which have much more "weight"
See Web Testing with JMeter: How To Properly Handle Embedded Resources in HTML Responses article to learn more about how to work with these "embedded resources"
Another inconsistency can be caused by JMeter not executing AJAX requests, i.e. if your application relies on JavaScript-generated requests and rendering their responses. JMeter is not a browser and it doesn't automatically execute JavaScript found in the HTML response so if this is the case you will need to manually add these requests to your Test Plan (or record them using HTTP(S) Test Script Recorder) and measure cumulative time via i.e. Transaction Controller.
As a follow on to Dmitri's post, take the page in question and examine it using the developer tools of your chosen browser. Examine very specifically the split between client side actions (JavaScript, Rendering, Painting, ...) and server side requests. In all likelihood you are timing A with Jmeter and B with your eyes
I am trying to do load testing for a webpage(angular 2), the response data i am getting in tool is "Loading Appcomponent content here ..".
I need the full html to be displayed in response data. Can anyone help?
As per JMeter project main page:
JMeter is not a browser, it works at protocol level. As far as web-services and remote services are concerned, JMeter looks like a browser (or rather, multiple browsers); however JMeter does not perform all the actions supported by browsers. In particular, JMeter does not execute the Javascript found in HTML pages. Nor does it render the HTML pages as a browser does (it's possible to view the response as HTML etc., but the timings are not included in any samples, and only one sample in one thread is ever displayed at a time).
So if your application content is being loaded via JavaScript calls (the technology is known as AJAX) JMeter won't trigger JavaScript-driven requests as it is not capable of parsing them.
However you can capture the relevant requests using HTTP(S) Test Script Recorder and see the responses, most probably they will come as XML or JSON so you won't see the "real" page, but you will get the data and will be able to measure the requests timings.
Also AJAX requests need to be handled a little bit differently comparing to "normal" sequential HTTP requests as in the majority of cases browsers execute them in parallel, see How to Load Test AJAX/XHR Enabled Sites With JMeter article for more details.
I have a search form which would open a list when 2 characters are typed. I would like to measure that time it takes to open and load the list in jmeter. How can I do it?
If you look into your "Network" tab of your favourite browser developer tools you will see that each time you type a letter or digit in the search field the browser sends a HTTP request to the backend server and it responds with search suggestions:
So all you need to do is to simulate these requests using JMeter and measure the response time.
You can even record these requests using HTTP(S) Test Script Recorder, Badboy, JMeter Chrome Extension, whatever
There are two things, I would like to quote:
JMeter is not a browser
JMeter is not a browser, it works at protocol level. As far as
web-services and remote services are concerned, JMeter looks like a
browser (or rather, multiple browsers); however JMeter does not
perform all the actions supported by browsers. In particular, JMeter
does not execute the Javascript found in HTML pages. Nor does it
render the HTML pages as a browser does (it's possible to view the
response as HTML etc., but the timings are not included in any
samples, and only one sample in one thread is ever displayed at a
time).
From JMeter Wiki
JMeter does not process Javascript or applets embedded in HTML pages.
JMeter can download the relevant resources (some embedded resources
are downloaded automatically if the correct options are set), but it
does not process the HTML and execute any Javascript functions.
If the page uses Javascript to build up a URL or submit a form, you
can use the Proxy Recording facility to create the necessary sampler.
If this is not possible, then manual inspection of the code may be
needed to determine what the Javascript is doing.
Solution #1
Whenever you type each character, check any service call to the server. This can be captured using browser developer tools > Network tab.
E.g.
If you type iPhone, there will be six service calls to the server. By measuring each call individually, you will be able to understand, how your application behaves under the load.
Again this is a service call, not the UI rendering.
https://example.com?q=i
https://example.com?q=iP
https://example.com?q=iPh
https://example.com?q=iPho
https://example.com?q=iPhon
https://example.com?q=iPhone
Solution #2
By leveraging Selenium WebDriver in your JMeter Test plan, you can measure the end-to-end response time.
Please refer this Blazemeter article and this blog for more details.
Visit JMeter Plugins website and search for Selenium to read more details about Selenium WebDriver.