An inherent desire to create a culture of interaction between the members of business community is the driving force for the Asian Leadership Awards. Types, Process Important Metrics What is Performance Testing Performance Testing is a type of testing to ensure software applications will perform well under their expected workload. Features and Functionality supported by a software system is not the only concern. A software applications performance like its response time, reliability, resource usage and scalability do matter. The goal of Performance Testing is not to find bugs but to eliminate performance bottlenecks. The focus of Performance Testing is checking a software programs Speed Determines whether the application responds quickly Scalability Determines maximum user load the software application can handle. Stability Determines if the application is stable under varying loads Performance Testing is popularly called as Perf Testing and is a subset of performance engineering. Why do Performance Testing Performance Testing is done to provide stakeholders with information about their application regarding speed, stability and scalability. More importantly, Performance Testing uncovers what needs to be improved before the product goes to market. Without Performance Testing, software is likely to suffer from issues such as running slow while several users use it simultaneously, inconsistencies across different operating systems and poor usability. Performance testing will determine whether or not their software meets speed, scalability and stability requirements under expected workloads. Applications sent to market with poor performance metrics due to non existent or poor performance testing are likely to gain a bad reputation and fail to meet expected sales goals. Also, mission critical applications like space launch programs or life saving medical equipments should be performance tested to ensure that they run for a long period of time without deviations. How To Create Loyalty Programs In Sap Crm Tutorial' title='How To Create Loyalty Programs In Sap Crm Tutorial' />Types of Performance Testing. Load testing checks the applications ability to perform under anticipated user loads. The objective is to identify performance bottlenecks before the software application goes live. Stress testing involves testing an application under extreme workloads to see how it handles high traffic or data processing. The objective is to identify breaking point of an application. Download Vb.Net Hide Program On Taskbar. CRM_Analyticke.jpg' alt='How To Create Loyalty Programs In Sap Crm Tutorial' title='How To Create Loyalty Programs In Sap Crm Tutorial' />
Endurance testing is done to make sure the software can handle the expected load over a long period of time. Spike testing tests the softwares reaction to sudden large spikes in the load generated by users. Volume testing Under Volume Testing large no. Data is populated in database and the overall software systems behavior is monitored. The objective is to check software applications performance under varying database volumes. Scalability testing The objective of scalability testing is to determine the software applications effectiveness in scaling up to support an increase in user load. It helps plan capacity addition to your software system. Common Performance Problems Most performance problems revolve around speed, response time, load time and poor scalability. Speed is often one of the most important attributes of an application. Senturus comprehensive library of Cognos and Business Intelligence presentations and information. All of them are free and we add new resources regularly. A service for streaming logs into Hadoop Apache Flume is a distributed, reliable, and available service for efficiently collecting, aggregating, and moving. A slow running application will lose potential users. Performance testing is done to make sure an app runs fast enough to keep a users attention and interest. Take a look at the following list of common performance problems and notice how speed is a common factor in many of them Long Load time Load time is normally the initial time it takes an application to start. This should generally be kept to a minimum. While some applications are impossible to make load in under a minute, Load time should be kept under a few seconds if possible. Poor response time Response time is the time it takes from when a user inputs data into the application until the application outputs a response to that input. How To Create Loyalty Programs In Sap Crm Tutorial' title='How To Create Loyalty Programs In Sap Crm Tutorial' />Generally this should be very quick. Again if a user has to wait too long, they lose interest. Poor scalability A software product suffers from poor scalability when it cannot handle the expected number of users or when it does not accommodate a wide enough range of users. Load Testing should be done to be certain the application can handle the anticipated number of users. Bottlenecking Bottlenecks are obstructions in system which degrade overall system performance. Bottlenecking is when either coding errors or hardware issues cause a decrease of throughput under certain loads. Bottlenecking is often caused by one faulty section of code. The key to fixing a bottlenecking issue is to find the section of code that is causing the slow down and try to fix it there. Bottle necking is generally fixed by either fixing poor running processes or adding additional Hardware. Some common performance bottlenecks are CPU utilization Memory utilization Network utilization Operating System limitations Disk usage Performance Testing Process The methodology adopted for performance testing can vary widely but the objective for performance tests remain the same. It can help demonstrate that your software system meets certain pre defined performance criteria. Or it can help compare performance of two software systems. It can also help identify parts of your software system which degrade its performance. Below is a generic performance testing process Identify your testing environment Know your physical test environment, production environment and what testing tools are available. Understand details of the hardware, software and network configurations used during testing before you begin the testing process. It will help testers create more efficient tests. It will also help identify possible challenges that testers may encounter during the performance testing procedures. Identify the performance acceptance criteria This includes goals and constraints for throughput, response times and resource allocation. It is also necessary to identify project success criteria outside of these goals and constraints. Testers should be empowered to set performance criteria and goals because often the project specifications will not include a wide enough variety of performance benchmarks. Sometimes there may be none at all. When possible finding a similar application to compare to is a good way to set performance goals. Plan design performance tests Determine how usage is likely to vary amongst end users and identify key scenarios to test for all possible use cases. It is necessary to simulate a variety of end users, plan performance test data and outline what metrics will be gathered. Configuring the test environment Prepare the testing environment before execution. Also, arrange tools and other resources. Implement test design Create the performance tests according to your test design. Run the tests Execute and monitor the tests. Analyze, tune and retest Consolidate, analyze and share test results. Then fine tune and test again to see if there is an improvement or decrease in performance. Since improvements generally grow smaller with each retest, stop when bottlenecking is caused by the CPU. Then you may have the consider option of increasing CPU power. Performance Parameters Monitored The basic parameters monitored during performance testing include Processor Usage amount of time processor spends executing non idle threads. Memory use amount of physical memory available to processes on a computer. Disk time amount of time disk is busy executing a read or write request. Bandwidth shows the bits per second used by a network interface.