Wednesday, December 24, 2008
Loadrunner certification sample questions
Loadrunner important Topics
Overview
HP LoadRunner is a load testing product that determines application scalability, behavior, and performance. It emulates thousands of virtual users, and identifies and isolates performance bottlenecks acrossand within each tier.
- Discuss the value of load testing
- Plan for effective load testing
- Establish load test goals
- Run load test scenarios
- Load and overload when executing scenarios
- Analyze and interpret load test results
Introduction
- Define VuGen
- Identify the main components of the VuGen interface
Recording for the Web
- Create a VuGen script by recording user steps with VuGen in the web environment
- Describe the basics of HTML and URL recording levels
Replay
- Identify and configure the appropriate web runtime setting for replay
- Replay the script in VuGen to verify script functionality
- Recognize the debugging tools available in VuGen
Transactions
- Explain the function of a transaction in a script
- Insert a transaction in a script during and after recording
Parameters
- Explain what parameters are and how they work
- Solve playback problems with parameterization
- Parameterize a script for load testing
Auto Correlation After Recording
- Define Correlation
- Correlate dynamic values found by using the Auto Correlation tool
Verification
- Recognize why and when to use verification
- Identify visual cues to check for during load testing
- Add Text Checkpoints during and after recording
Actions
- Create multiple Actions for a web script
- Configure Actions to achieve load testing goals
Introduction to Script View
- Identify when Script view is necessary
- Send customized output messages to the Replay Log
- Identify basic C code including statements, variables, and functions
- Apply basic debugging techniques in VuGen
Advanced Scripting Techniques
- Recognize general LoadRunner functions
- Recognize protocol specific functions
Manual Correlation
- Determine when manual correlation is required
- Correlate dynamic values using the create parameter option
Auto Correlation During Recording
- Create correlation rules to auto correlate during recording
- Import and export correlation rules
Introduction to Scenarios
- Explain elements that make a LoadRunner scenario
- Identify different types of scenarios
- How to choose the scenario
- Present the basic steps for creating a scenario
Scenario Execution
- Prepare for a scenario run
- Identify techniques to efficiently run a scenario
Scheduling Scenarios
- Scheduling by group and by scenario
- Prepare VuGen User (Vuser) initialization
- Configure duration scheduling
- Configure scenario ramp up and ramp down
Performance Monitors
- Value of Performance Monitors
- Select Performance Monitors
- Add measurements to Performance Monitors
Results Analysis
- Value of root cause analysis
- Diagnose errors with LoadRunner
Tuesday, December 16, 2008
What do we want to know(skills) for having good knowldge on Loadrunner
For having the knowledge on Load RunnerSpecifically, we need to know the following knowledge and skills:
Components such as web servers, application servers, database servers, operating systems, networks and network elements such as load balancers.
You need not have "guru" level knowledge of each of the components but should have operational knowledge and an understanding of the performance issues associated with the components.
For example, a load tester should know what multi-way joins, indexes and spin counts are and what affect they have on a database server.
Protocol(s) used between the client and server such as HTTP/HTML, ODBC, SQL*NET, and DCOM.
The LoadRunner script language is ANSI C. It helps to know the C language, but the scripts are generated and manipulated by LoadRunner, so there is usually no need to directly edit the code. There is also a icon script view which completely hides the C code.
Load testing is not a heads down coding exercise. You will work with many parts of an organization to coordinate activities, schedules and resources.
Daily interaction with a variety of people requires good oral and written communication skills as well as good people skills. If you prefer to sit in a cube by yourself, you should stay in functional testing or development.
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Performance Testing News:
- Targeting an April 2012 Development release. Not sure when it will be available for public.
- Customers can participate in the beta program after legal procedures are completed.
- Availability of LR Mobile protocol. Performance testing for mobile (both web browser based as well as native mobile device) – Supports HP Palm Pre, iPhone (3GS, 4), Android, Blackberry phones and many other actual mobile devices.
- Support for Windows7, TruClient IE9.
- VUGen will be completely redesigned and new IDE (called Sharp Develop) will be built.