What is the meaning of "response time" in Jmeter?
Is the average response time equivalent to Page load time, or is it something different?
As per The Load Reports guide
RESPONSE TIME is the amount of time the system takes to process a
request after it has received one. This parameter does not include
time that it needed to transmit HTTP/s requests over network to
web-server under test.
LATENCY is the delay involved for your request
to reach the server.
The response time that is required to receive a response from the
server is the sum of the response time + latency.
Response time is individual for each request and consists of server response time itself + time required for request to reach the server (latency)
Average response time is being calculated as arithmetical mean of all requests response times.
For instance, you have
Request 1 - 4s
Request 2 - 2s
Request 3 - 5s
So Average Time would be (4 + 3 + 5) / 3 == 4 seconds.
It depends.
How do you define page load time?
JMeter will tell you exactly how long it took to transfer over the network all of elements you want to include as part of a "page load". This can include:
Just the HTML page
The HTML page and all embedded resources on the HTML page (images, css, js)
The HTML page, all embedded resources and additional elements that are loaded after the initial HTML (such as elements that require Javascript / Ajax to load.)
What JMeter won't factor in is how long it took to execute any JS that ran on the page.
Enable "Retrieve All Embedded Resources" in the HTTP Request Sampler.
your Average Response time = Page Load Time
By Default "Retrieve All Embedded Resources" will be unchecked.
In order to measure the response time including the JS, CSS & Images (exactly as in the browser) this property should be checked before running the test.
Hope this will help.
Related
There is substantial difference between response times of Parallel controller ( with requests for all resources, and 6 connections) and HTTP Sampler of main request( with "download embedded resources" checked, with 6 connection). Why is that?
If you're seeing different response times it means that you either not sending the same requests or sending them in a different way. The best way to check is using a network sniffer tool to compare the network footprint of both approaches.
HTTP Request sampler duration is calculated as:
main request
plus the largest response time of 1st chunk of 6 resources
plus the largest response time of 2nd chunk of 6 resources
etc.
Parallel Controller acts the same but it doesn't add the main request duration to the overall response time
Also if you have more than one/request and/or iteration and HTTP Cache Manager added to the test plan
In general you should not be comparing HTTP Request's response with a plugin, you should compare it with the real browser
While navigating to e.x landing page the blazemeter recorder gives 10 HTTP requests. In this case, how can i get, how much time taken to navigate landing page.
If I summarize all the requests time based on View Results in Table listener, it is more than the reponse time of chrome time hence couldn't get the exact time.
Note: HTTP Request might be sequential or parallel.
Chrome Response time is 4sec but View Results in Table listener sum value is 12sec
I don't think you should have 10 requests, most probably you should have only 1 request.
If remaining 9 requests are for images, scripts, styles, fonts, sounds, etc. - you don't need to add them manually, instead you need to tick Retrieve all embedded resources and Parallel Downloads boxes on "Advanced" tab of the HTTP Request sampler (or even better, HTTP Request Defaults:
If the requests are AJAX - you need to put them under Parallel Controller
I'm basically trying to calculate in JMeter 5.1 the server processing time for a HTTP request. I've read the JMeter documentation (specially https://jmeter.apache.org/usermanual/glossary.html) to know more about Elapsed time, Latency and Connect time.
Let's say I have a test plan with one thread which does successively 3 identical HTTP requests to one server. The thing is that for the first request, Connect time is (obviously) not equal to 0, but it is for second and third request.
However, from my understanding, Latency includes Connect time, hence for my first request, the Latency is always (much) larger than for the second and third request, and it does not reflect the time spent waiting (server processing time) for this first request.
Can I assume that, if I substract the Connect time from the Latency (Latency - Connect time), it gives me a meaningfull value of the server processing time (+ download content time maybe?)
See w3c time-taken HTTP request log field. Just turn this on and post process the HTTP request logs at the end of your test. You will have the complete processing time for each individual request.
I have 416 webservice API's to test . I am loading those url's from a CSV file . my test need to find an API which takes more than 2 sec to respond . I couldn't find a way to measure response time for an API .
I am using
Thread Users - 416
Ramp up Period - 1
Loop Count - 1
I have tried "View Results in Table" listener which shows the sample time . But the sample time does not show individual response time .
Please let me know if you find any solution ?
You shouldn't use listeners as View Results in Table in Load test because it consumes a lot of resources
this visualizer uses a lot of memory.
Use Duration Assertion instead, defined it with 2000 milliseconds in your case
Duration Assertion tests that each response was received within a given amount of time. Any response that takes longer than the given number of milliseconds (specified by the user) is marked as a failed response.
Add listener Summary report which has columns as average, minimum and maximum response time taken by a hit.You can also save this report by clicking on Save Table data button.
Also, add View Results Tree listener in which Sampler Result tab has all the details corresponding to that hit.
On the "Advanced" tab of the HTTP Request sampler (or even better HTTP Request Defaults) there is Timeouts section where you can define maximum value for establishing the connection and/or getting the response.
If JMeter fails to get the response within the time frame (in milliseconds) the relevant sampler will be marked as failed.
In order to see individual response times - add the variable from the CSV file as HTTP Request label (or prefix or postfix) - this way you will see the associated URLs in the listeners and in the HTML Reporting Dashboard :
How can I measure the following points
Server Processing Time
Page Loading Time
Page Rendering Time
Page Size
from Apache Jmeter?
Is there any suitable listener to measure all these points?
With aggregate report Or csv / xml results you get nearly all the infos you can regarding response times BUT:
Server Processing Time: you cannot get this one as jmeter act on client side it includes network time, so you need to add some profiling data or look at access logs
Page Loading Time : if it's page response time yes
Page Rendering Time : no as jmeter is not a browser, furthermore rendering occurs on client side so what interests you in load testing is time to get response.
Page Size: yes
I suggest you read:
http://jmeter.apache.org/usermanual/index.html
http://jmeter.apache.org/usermanual/test_plan.html
http://jmeter.apache.org/usermanual/component_reference.html#Aggregate_Report
Regards
Philippe M.
http://www.ubik-ingenierie.com/-Solutions-
Server processing time = time to first byte - request sent
Page loading time = time to last byte - time to first byte
Page size = Response size
Page rendering time - you'll have to use GUI testing tools for this one.
E.g.
Chrome has Ctrl+Shift+i > Timeline tab
Firefox has Firebug > Net tab.
See here for more info on these phrases mentioned above.