Table of Contents
How do you generate a random number in LoadRunner?
This is a pre-defined function in LoadRunner. rand() function generates a random value in the range 0 to 32767….Actually, there are three methods to generate a random number in LoadRunner:
- Using rand() Function.
- By Random Parameter.
- By Date/Time Parameter.
How do I use LoadRunner controller?
There are two type of scenarios in Loadrunner See the below step by step instructions on how to start the load test. Launch Controller (Version 2020) and upload the script. Select type of scenario to design, from the left pane select the script you want to upload and click on Add button then click ok. As shown below.
What is lr_eval_string in LoadRunner?
lr_eval_string() is an important function in LoadRunner which helps to convert LoadRunner variable into language-specific variable. Whenever you want to use the value of LoadRunner variable in a language-specific function then you need to first evaluate the parameter.
What is SLA in LoadRunner?
Service level agreements (SLAs) are specific goals that you define for your performance test. After a test run, LoadRunner Analysis compares these goals against performance related data that was gathered and stored during the course of the run, and determines whether the SLA passed or failed.
What is Web_set_sockets_option in LoadRunner?
This will then return details of the web servers SSL configuration. Other usefull commands to use in LoadRunner Web protocol scripts are as follows: web_set_sockets_option(“SHUTDOWN_MODE”, “FAST”);Allows the disconnection of the SSL session to be completed quickly.
What is web_url in LoadRunner?
The web_url function is an action function that loads the web page (GET request) specified by the URL argument. (Each Web Action Function in a script causes the browser to display a new web page or frame. All Web Action functions can be recorded by VuGen.) The web_url function does not require a context.
What is difference between pacing & think time?
Pacing in load testing refers to the time between the iterations of your test scenarios. This is unlike Think Time, which refers to the delay between actions or interactions inside iterations. Pacing allows the load test to better simulate the time gap between two sessions.
What is granularity in LoadRunner analysis?
Load Runner Solution: Granularity: Granularity is known as scale that is used to represent how easy and understandable a graph is and also to analyze the graph on different scale. The Granularity of the graph can be set in milliseconds, minutes and hours. Therefore, all of these are the correct answer.
What is SLA in load testing?
How do you find the bottleneck in performance testing?
Performance testing and APM monitoring go hand in hand to find the root cause of bottlenecks quickly and efficiently.
- Test your application performance much before it goes live.
- Test the application under various load scenarios.
- Test with realistic scenarios by adding think time, pacing, etc.
Why do we need pacing in loadrunner?
Pacing is used to regulate the rate of requests hitting to the server. Using Pacing, you can accurately achieve the required TPS rate against your system instead of just mindlessly hammering it. Pacing creates a realistic scenario which adds more accuracy in the performance test result.
How is pacing calculated in loadrunner?
Here RT+TT is Script Execution Time SET which you can calculate by running script once and adding up all the RT of transactions and all think times. Assume SET to be 60 seconds. Now Putting all values in Little’s Law: 50 = 16.66 (60 – Pacing) Pacing = 60 – 50/16.66 Pacing = 57 secs (approx).
What is first buffer time in LoadRunner?
The Time To First Buffer is an indication of how heavy the processing for a given workload is or even an indication of how long does it take to open up a connection to a particular resource for the first time due to various buffering requirements.
What is NFR in performance testing?
Nonfunctional Requirements (NFRs) define system attributes such as security, reliability, performance, maintainability, scalability, and usability. They serve as constraints or restrictions on the design of the system across the different backlogs.
How do you stop bottleneck performance?
3 Common Application Performance Bottleneck And How to Avoid Them. Correlate performance metrics with business outcomes. Provide a flawless user experience, every time. Improve application performance (APM) and ensure quality software delivery.
What are the types of performance bottlenecks in performance testing?
The most common system bottlenecks are slow response time, poor scalability, too long load time, system downtime, software breaks and others. Unoptimized work of database, foreground events, server issues, memory utilizations, OS limitations and high traffic can cause performance issues.
How to generate a random number in LoadRunner?
Actually, there are three methods to generate a random number in LoadRunner: Following is the description of each method along with the example, Pros and Cons: 1. Using rand () Function This is a pre-defined function in LoadRunner. rand () function generates a random value in the range 0 to 32767.
What is the scope of the generated random number?
The scope of the generated random number is throughout the iteration. If a different random number needs to be passed within the same iteration then this function needs to be recalled, so that another random number can be generated.
How to generate a random number from a date and time?
With the help of the combination of date and time, a random number can be generated. In this method, a parameter of type Date/Time needs to be defined and the number format is created by using the combination of year, month, day, hour, minute and second.
How to return array of values from function in LoadRunner?
There are are many situations in LoadRunner where function returns set of values. Let us consider example of correlation . Correlation uses function Web_Reg_save_Param function which sometimes returns list of values that we may say that it returns array of values. Suppose this function returns four values.