Performance Testing, LoadRunner Tips & Tricks This page is dedicated to performance testing using LoadRunner. Current development also includes tuning on various technologies and business perspective in load testing and usage of other load testing tools. Statistics Unique Visitors: Total Unique Visitors: Outgoing: Total Outgoing: 0 0 57 3372

Articles from Performance Testing, LoadRunner Tips & Tricks

Monitors: The Other Way? II 2007-06-25 01:58:00 The organisation that I worked in have frequent port clearance to perform prior the load test and this is often a troublesome matter to do. As you know that for monitoring to be successful, it requires certain ports to be opened as described in the article titled, "Monitors: How does the monitoring work?". So for this requirement, port-clearance becomes part and parcel of the performance tester job (or for me in particular). This kind of situation exists for some other organisations too. With that, I introduce you to monitor in an alternative way by monitoring locally on the machine and logging the data. The monitoring fundamental for LoadRunner is almost the same for all monitors, as such, you can collect the performance on the machine locally then port it to Analysis to be imported. Analysis provide an import feature that allows external monitor to be ported into the results of the load test. The import feature is straight forward in the usage. More information (a short one) ...

General: Maximum amount of Vusers generated by a single load generator 2007-06-19 09:34:00 How many vusers can a Load Generator generate?There is a straight forward answer in this KB article, KB 11808, "How many Vusers can run on a given computer" from Mercury/HP. Also, you can refer to the following article, KB 3629, "Recommended hardware and OS tuning for optimal Vuser performance" to get information of recommended hardware for vuser performance. As per metioned in the articles, the question of maximum load relates closely to the CPU and Memory on a given hardware. Before we dwell deeper into the technical details, it is best to ensure that common blunders are removed, such as, (1) the Controller have sufficient license to run the amount of vusers stated in the Scenario. (2) Furthermore, ensure that there are no limits enforced on the Load Generators with are configured in the Scenario Settings.To start with, we must understand what happens during a scenarion execution. Refer to General: Scenario Execution for an understanding of the scenarion execution. Furthermor ...

Basics: Transaction Response TIme 2007-06-18 09:52:00 What is Transaction Response Time? Transaction Response Time represents the time taken for the application to complete a defined transaction or business process.Why is important to measure Transaction Response Time? The objective of a performance test is to ensure that the application is working perfectly under load. However, the definition of “perfectly” under load may vary with different systems.By defining an initial acceptable response time, we can benchmark the application if it is performing as anticipated. The importance of Transaction Response Time is that it gives the project team/ application team an idea of how the application is performing in the measurement of time. With this information, they can relate to the users/customers on the expected time when processing request or understanding how their application performed.What does Transaction Response Time encompass? The Transaction Response Time encompasses the time taken for the request made to the web server, there af ...

Products: SiteScope 2007-06-17 02:26:00 SiteScope is another Mercury/HP product that provides agentless monitoring to the users. Agentless monitoring in this context means that there is no need to have additional installation of components to the target servers to perform monitoring.Similar to the LoadRunner Controller, SiteScope requires the designated server to be able to perform monitoring of its own which SiteScope will be able to draw data from it. Depending on the user, they have a choice of using SiteScope to perform the monitoring or use the Controller. Below is a list of links written by Charles Laudia that provides SiteScope-related information. What is SiteScope?What are SiteScope components?How does SiteScope work? How does the licensing work in SiteScope? SiteScope for Windows QuickStartRelated TopicsContent Page - Products ...

Working with Web (HTTP/HTML) V: File Download/Export 2007-06-08 07:58:00 Frequently, I've observed that there are always questions relating to file download functionalities or file export not being recorded by Vugen for Web (HTTP/HTML) protocol in Web applications, such as clicking a link and the file will be downloaded. In this article, I will describe the possibilities of the problem based on my experiences. We will elaborate using a Winword file. When you click on the link or button to access the file, the file gets loaded in the browser. From here, the business process requires you to click on a link to export it or save it to the local machine. There are two possibilities that will happen. The Winword is either saved over the network or at the OS level. In the context of network level, the client makes a request to the server (as per norm) to download the file which translates to network traffic going to and fro between the client and server. This will be recorded. In the context of OS level, the client issues a OS command to "save-as" the fi ... Download

General: Virtualization with LoadRunner 2007-06-06 04:14:00 There was the question posted in the Yahoo discussion group on the topic of virtualization with LoadRunner. That is to use virtualization tools such as VmWare and its support and compatibility with LoadRunner.James Pulley who often posts in the group came together a list of recommendations with regards to his experience in such a topic here. The recommendations consist of what could be installed on the virtual machines. I personally appreciated that he put in these information.I believed that the recommendations will be very useful for individuals or organisations looking for some answers with the proliferation of the virtualization tools and therefore extracted the content of the discussion and publish here.The recommendation by James were in order of the least influenced to the most influenced by virtualization.AnalysisThe core issue associated with virtualization is the state of the virtualized system clock which is inconsistent in operation, so much so that time critical events do ...

Protocols: Working with CORBA-Java 2007-06-01 01:52:00 The blog by Stuart Moncrieff has great resources on load testing and particularly one of them is CORBA-Java. It comes really handy with a downloadable document at the end of the article and when Java-related protocol resources are hard to find.The article "Tips for Load Testing CORBA Applications with LoadRunner" covers recording, replaying, workarounds and scripting. Click on the link here to be redirected. Related TopicsContent Page - Protocols ...

Products: Diagnostics 2007-05-30 23:17:00 The Mercury Diagnostics Software is a standalone software of its own that is functional by itself. Its main functionality is to profile the J2EE, .NET or ERP/CRM application and allowing drill down of the modules to understand the actual problem cause (depending on what you’ve purchased and installed).If you would like to hear from the sales, click here.The discussion here will be specified to performance testing (LoadRunner/Performance Center) and J2EE.The Diagnostics setup comprises of the Probe/Profiler and the Server (Commander). Note that Probe and Profiler will be use interchangeably in this article. Previous version of Diagnostics, 4.2 and earlier have the Probe/Mediator/Commander however that was been incorporated into just the Probe and Commander. Note as of this writing, the latest Diagnostics is 6.5The Profiler/Probe is also able to function on its own by collecting data of the instrumented application server. This can be displayed via the browser via port 35000 by default ...

General: Vugen/Controller Crash or Abnormal Behavior 2007-05-28 04:56:00 In the event that Vugen, Mercury/HP has provided a document that assists the user in troubleshooting the problem. The document, KB 31731 provided is rather old but still relevant.Download the document and follow the steps sequentially not to miss any of it. Do take note on the following three which you can start with which usually resolves the problem.1. Login as administrator2. Run the batch file3. Reinitializing the ini fileThe definition of administrator here is it is a default administrator on the OS without any changes to its roles or privileges.Similarly, for crashing or abnormal behavior of Controller, you can refer to KB 12532. Take note that for both KB, you will need a valid login to the support website to access them.On top of the list of solutions provided by Mercury/HP, you may want to verify the following too.1. Ensure that there are no other Mercury/HP product (especially QTP or WinRunner). It is advisable to install only LoadRunner components on the machine. 2. Ensure t ...