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
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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..
I have to do a performance test for application(It has UI) ,It has API requests ,how to find the browser rendering time for APIs , can we do it with retrieve embedded resource. I am quite new to this ,Can someone please guide me.
Not really, 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).
The only way to measure browser rendering time is using a real browser, if you want to do this along with the existing JMeter performance tests - go for WebDriver Sampler, it provides JMeter integration with Selenium browser automation framework so you will be able to kick off a real browser and measure its rendering time (response time of the WebDriver Sampler will be the time from opening the page till the rendering finishes.
If you need the breakdown - consider using Navigation Timing API
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
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.