Loadrunner Architecture

General Architecture of Loadrunner:

• LoadRunner works by creating virtual users who take the place of real users operating client software, such as Web-page on this website Exploreranother sending requests over the HTTP protocol to IIS or Apache web servers.

• The claims of many customers fake user "load-generator," create a burden on the servers of the various sub-Teston of this page

• These load generator agents started and stopped with the controller.

The Controller controls load test on "scenarios" appeal is based on compiled "Scripts" and associated "Run-Time Settings."

Scripts will be with the script generator of virtual users (so-called "VU Gen"), the script generates code in C performed by virtual users to capture network traffic between client and server Internet applications.

• With Java clients, VuGen recorded calls by hooking into the client JVM.

• During the race, the state of each machine is controlled by the controller.

After each execution, combining the controller the control of the newspapers of logs obtained from load generators, and makes them available for analysis "program, which can then be exported to create reports and charts to Microsoft Word, Crystal Reports, Web page or HTML browser.

Each page of the HTML report generated by the analysis show contains a link to the results to a text file, the Microsoft Excel for further analysis.

virtual users (VUsers)

Unlike WinRunneranother a page on this web site, the work stations with a single user on a client emulates, LoadRunner can emulate thousands of virtual users.

Load generators are of VuGen scripts that control the non-GUI API calls using the same protocols as the client to the test output. But WinRunner GUI VUsers emulate keystrokes, mouse clicks and actions of other users on the client interface for testing a single user interface can be run from a machine unless LoadRunner Terminal Services Manager manages machines remotely via Terminal Server Agent enabled and registration in a Terminal Services client session.

During execution, VUsers threaded share a common memory. Sun threading more VUsers at the expense of the generator.

The state of VUsers to all types of goods from "Running" and click on "Ready" Having a part of the initialization script. VUsers are "finished" in the past or not the final status. VUsers are automatically "Stopped" if the load generator overloaded.

No additional license is required to standard Web (HTTP) follow-server (Apache, IIS, and Netscape).

In order for Monitoring Web Services SOAP and XML, a separate license is required and must VUsers Web Services Add-in for Mercury Feature Pack (FP1) installed


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Set the screen version of the product

9.51 Patch Version 9.50 (File file KM750376 LR_03009.zip, dated July 6, 2009, is a 201 MB zip. AJAX allows a better identification and description of the properties of DOM elements. GACSetup.exe and Magentconfig.exe, imposing Vista users.

Version 9.50 Available June 2009

The version 9.10 installation available in February 2008, is 2.31 GB after expansion. However, the folder created after installing 931MB is in English.

LR81FP4P136.exe Version 8.1 Feature Pack 4 patch installation 7786800 bytes, was signed 2nd January 2007 File in 8.1.4.0 (Build: 1735) is Recorder Version: 1290th

Version 8.1 Feature Pack 4 installer was signed LR81FP4.exe to 194,644,720 bytes, 15 December 2006 file version 8.1.4.0 (Build: 2249) is Recorder Version: 1289th This requires an upgrade to 2.0 MS.NET customers.

Version 8.1 Feature Pack 3 Setup LR81FP3.exe to 116,601,240 bytes, was signed June 18, 2006, when the file version 8.1.3.0 (Build 2085). Programme>) Microsoft WSE (Web Services Enhancements) 2.0 SP3, um Sicherheitsrichtlinien für Sytems läuft umzusetzen." onmouseover="this.style.backgroundColor='#ebeff9'" onmouseout="this.style.backgroundColor='#fff'">It installs (one item on the Start> Programs)> Microsoft WSE (Web Services Enhancements) 2.0 SP3 to implement security policies for Sytems runs. NET Framework 1.1.

Version 8.1 is to be available since October 2005. In VuGen adds a view of the workflow, guided workflow ", and a memory leak that is fixed with a patch for download from December 2005. Rename the execution VuGen log "in the log record.

Version 8.0 is to be available since August 2004. He added: "Additional Attributes" for the execution parameters. It also adds (additional cost) analysis and optimization, allowing time for the settlement of transactions Break Down Break Down Maintenance at various levels of the Transaction Server (Web Server, Oracle 11i and PeopleSoft 8 application servers, databases) layers. Separate SQL execution time to analyze and take your time.

Version 7.8 Feature Pack 1 adds support for Windows XP.

Version 7.8 is to be available since September 2003.

6.5 in June 2000, available version offers new technologies TurboLoad "- a completely new engine, the thousands of replays VUsers runs with a single operating system thread.

Different types of performance risks:

The typical risks involved while doing performance testing includes:
Application speed Risks,
Scalability Risks,
Stability risks.

Application Speed risks:
Application Speed risks can be defined in this way.
Check whether the application is responding with enough speed so that the end users are satisfied with its response time.
Check if the application in enough fast to process the data on time. For example if a customer request data needs to be processed with in 1 hour after submission, but the application takes 1.3 hrs?
Check if the application gives updated and accurate data every time when needed? I.e. data related to share quotes, flight timings, currency values etc..

To avoid the above mentioned speed related risks make sure you take the below precautions before releasing the product.

Compare the finished application/product with the existing competitors product and see if your product speed is more than or equal to that.

Compare your application’s speed with the older versions of the same applications to check if the new built is faster than the old version.

Conduct performance testing parallel to some downloads, uploads from and to the application or while some virus scanning is going on.

Conduct performance testing by putting heavy loads on the application just as in real time.

Know the feed back of the application end users about your application.

Scalability Risks:
Scalability Risks include the below.
Check whether the application performs as desired under peak load and at maximum loads at peak hours.
Check if the application can process all the data under peak loads applied to it.
Check if the application functionality is as desired even when heavy loads applied.

Stability Risks:

Base line testing

Base lines are commonly used as metrics to compare the results with future test results to know the applications performance. Base lines can be prepared for individual or entire layers of the application, i.e. for single component, a group of components or entire application. Base lines can be prepared independently for application, database servers, application servers etc.

Before capturing the baselines for the application, one should know in and out of the application. Then only baselines can be captured properly. After every change done to the application, it will undergo a series of performance testing again and compared the results with baselines to see if there are any considerable changes. Base line results can be normally response times, throughput, no of transactions per sec, no of web pages delivered per sec etc…

You can not always take the base lines as a standard comparison every time. It is because when the application changes over time, you need to take new base lines again as a standard. It happens mainly when there is lot of change in the application at the time when you first captured base lines and the application in today’s time.