Load Testing Interview Questions

->For a testing a manual tester must add lot of documents and test the work flow , locked or not
->Test the system performance[ie,wen adding more documents it affects system speed or performance]

In load testing we need to test all of the performance objectives .
There are few to judge the client side performance and few are for server side performance

Hi
It is possible but not feasible in any organization to Load test or Stress test an application Esp a web application.
It basically needs user in huge number.So we do it Using tool which does it very effectively and efficiently

sure but we dont have the accuracy.preveously performance done with manually.

Load testing is simply testing up to how much simultaneous user can use/avail the application. Hence we need to test the application with hell lot of user which is not always possible in real world sc...

Virtual User means the user, But not a real user. When we perform testing we just create users which are as like as real users. For giving the continual load to the application we create virtual users...

Performance testing verifies many non-functional features of the software but load testing tool focuses on the load up to which it can sustain.

Performance Testing: It determines end ot end timing of various time critical business processes and transactions, while the system is under low load, but with a production sized database (all the dat...

Baseline testing is testing to rule out possibility that large number of users causing system degradation, which is usually to expose problem that are not related to the actual load. That might be functional problem etc. Usually performed with as lowest number of users as possible, i.e. just 1 user.

Performance baseline testing is called Benchmart test. This is the first test under performance testing which is done by the performance test engineer to  Compares the performance of a new or unk...

Sometimes you may not get any http errors and may think that the page loaded successfully but it may happen that some of the content like image or text did not load. placing image and text checks in t...

Many times the internet contents are not downloaded and dispalyed completely.  To ensure that all business processes have completed end to end, while server is handling concurrent requests, we need verification checks.

we can select web transactions from task distribution diagram and transaction profile.

select web testing option  in add-in

The original post is about parameterization, not correlation.You would know that your script has been parameterized if you see custom variables in the script. for example here is one for login: www.ya...

The script should fail when replayed may signifies a dynamic variable.  In this case, watch out for "sessionid" or related type of variables.  Also, a good way is to re-record the script to detect the differences. 

- papayamilkshake

I did a google search and was not able to find any info on "deferred graph." AFAIK, the standard terminology for the graphs that give  information about CPU, throughput, Error rates, etc, are called "correlation graphs", aka "reports graphs"

Load testing is used to find the the minimum and maximum load where the application can handle. It ensures the usage of the fixed number of users using the application frequently or concurrently this ...

Here is an example list of protocols supported by a tool called LoadUI. the protocols you can test will depend on the protocls supported by your app and the load test tool."loadUI is a tool for L...

Web(http/html) protocol

N-Tier Architechture (Typical): Client Tier(User Machine) <-->Presentation Tier(Webserver)<--> Application Tier (App Server) <--> Data Storage Tier (Database)

In Load runner, protocol do not have an architecture. As always with protocols, it defines the communication standards. Any 2 tire application will have a back end database server like oracle, sybase ...

- you have to pay thousands of dollars to use it

You need to understand the need for any commercial tool with respect to the kind of technologies you use in your organisation. A tool that do not support the techniologies is waste of time and money. If it can fit into your requirements, there is a considerable ROI...

Thanks, Kanthraj.
9212264980.

Duplicate question. Do a search for "correlation" to see the many answers.

Few things to consider here during the requirement gathering and planning phase.Benchmark the performance of the application.Benchmark the hardware resourecs required for the application for a given l...

For testing the application, we need to have the basic scenarios done first,
Second step will be to do the End to End testing with E2E scenarios,
Third test will be to do the rigorous testing.
Final step will be to do the load testing.

If some users are logged into the site already, then its under some load. It would be in stress when you exceeds the limit of specified load( by the business people)and site is behaving in unexpected way or degradation in the performance or application break down

Hi dear A page in under load is depends on how much users are accessing that perticuler page, then u have to match with client requirement and check how much time it's taking to view. You can increase the user to get more stress on that perticuler page and watch the response.

Generally, parameterization has two advantages:

1. Makes scripts smaller/easier to understand
2. Helps you use unique data in your script

Also, in LR you can use parameterization while working with data & time, when you have data dependancy and in the case of data caching.

- Anshoo Arora

parameterization is done to check how your application performs the same operation with different data.In load runner it is necessary to make a single user to refer the page for several times similar in case of database server.