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Topic: Load testing

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	Load testing - Wikipedia, the free encyclopedia
		Load testing is usually carried out to a load 1.5x the SWL (Safe Working Load) periodic recertification is required.
		When the load placed on the system is raised beyond normal usage patterns, in order to test the system's response at unusually high or peak loads, it is known as Stress testing.
		The load is usually so great that error conditions are the expected result, although there is a gray area between the two domains and no clear boundary exists when an activity ceases to be a load test and becomes a stress test.
	en.wikipedia.org /wiki/Load_testing (321 words)

	Load Testing.
		An important variation of the load test is the Network Sensitivity Test, which incorporates WAN segments into a load test as most applications are deployed beyond a single LAN.
		The important thing to understand in executing such a load test is that the load is generated at a protocol level, by the load generators, that are running scripts developed with the VUGen tool.
		Most load tests would not employ a WinRunner PC to measure actual response times from the client perspective, but is highly recommended where complex and variable processing is performed on the desktop after data has been delivered to the client.
	www.loadtest.com.au /types_of_tests/load_tests.htm (994 words)

	Software testing - Wikipedia, the free encyclopedia
		Testing during the beta phase, informally called 'beta testing, is generally constrained to fl box techniques although a core of test engineers are likely to continue with white box testing in parallel to the beta tests.
		Load testing Is the practice of modeling the expected usage of a software program by simulating multiple users accessing the program's services concurrently.
		Portability testing is testing the ease with which an application or component can be moved from one environment (e.g., hardware, operating system, and browser) to another.
	en.wikipedia.org /wiki/Software_testing (4660 words)

	SF AIDS Fdn: AIDS 101 -- Viral Load Testing
		The RT-PCR test chemically multiplies viral RNA that exists in the sample by a factor of approximately one million (this is the "chain reaction" which its name describes.) The amount of RNA in the sample is then easy to measure, but that amount is calculated, so this test measures the RNA indirectly.
		Sensitivity of a test is its ability to detect the virus when it is present, and to not report "false negative." Specificity of a test is its ability to detect only HIV and nothing else, so as not to report false positive.
		Because viral load testing is still a relatively new diagnostic tool, baseline viral load is used as one indicator of viral activity, but is not yet determined to be an absolute.
	www.sfaf.org /aids101/viral_testing.html (2035 words)

	Load Testing
		In load testing the software under test in subjected to various levels of "load", to test its behaviour.
		The testing has to be conducted within a structured framework otherwise its results are open to question.
		If it can only be tested once the integration has taken place and a fault occurs, was the problem with the cart or somewhere else in the system.
	www.loadtesting.force9.co.uk /aloadtesta461.htm (731 words)

	TTN On-Line Edition for September 2002
		The use of these terms in the QA literature varies to the point that sometimes load testing is defined as a type of performance test, or performance test is a type of load test, or (somewhat common, actually) load testing is not worth mentioning explicitly.
		Load Testing Definition: Any type of testing where the outcome of a test is dependent on a workload (realistic or hyper-realistic) explicitly characterized, simulated and submitted to the SUT.
		Scalability testing is a subtype of performance test where performance requirements for response time, throughput, and/or utilization are tested as load on the SUT is increased over time.
	www.soft.com /News/QTN-Online/qtnsep02.html (3282 words)

	QA Forums: FAQ - Performance & Load Testing
		Load Test — Most commonly collects various performance related measurements based on tests that model varying loads and activities that the application is expected to encounter when delivered to real users.
		Load Testing tools work at protocol level to generate the traffic/requests which would normally be generated by users driving the User Interface of your application.
		However, in the scope of Load Testing these users are often simulated by using a functional/GUI testing tool to drive a ‘real GUI’ in order to capture the performance overhead/cost of the GUI as versus the protocol level requests generated by the Virtual Users.
	www.qaforums.com /ultimatebb.php?ubb=get_topic;f=2;t=000901 (712 words)

	Load Testing by RPM Solutions Pty Ltd
		We are passionate about load testing and system performance, and we want to contribute to the success of your enterprise.
		RPM Solutions Pty Ltd is a Mercury GOLD Solutions Partner and provides load testing and performance test consulting services to facilitate optimization of corporate information technology at a variety of levels, from low level infrastructure testing to time critical business process validation.
		The principles of load testing distill down to mathematics and common sense, and are not limited to computer based systems.
	www.loadtest.com.au (672 words)

	Web Performance Testing and Load Testing - Webmetrics
		Schedule: Web performance testing engagements usually consist of three executions and can be as short as a few days or as long as a year, but typically take place within a 30-day window.
		It is imperative that the servers be monitored during the duration of a load test.
		To ensure all customer requests and requirements are addressed for each load test execution, all project-related tasks and communications between you and Webmetrics are managed and archived via a centralized email system.
	www.webmetrics.com /loadtesting.html (898 words)

	HIV Viral Load: The Test
		Viral load tests are reported as the number of HIV copies in a milliliter of blood.
		Viral load testing should not be used for diagnosing HIV; the HIV antibody test is still the preferred method of choice for this.
		Viral load testing done by the PCR method is incredibly sensitive, which can give rise to false-positive results.
	www.labtestsonline.org /understanding/analytes/viral_load/test.html (522 words)

	Load Testing (Site not responding. Last check: 2007-08-16)
		Load testing usually requires the use of lots of hardware driven by expensive test-driving software.
		Load testing support budgets well in excess of $1M are often required for testing enterprise and on-line applications.
		Most load testing driver solutions create "virtual users" that are basically packet generators, not full clients.
	www.metricalab.com /LoadTesting.html (378 words)

	Web Test Tools
		Can be used to simulate a heavy load on a server, network or object to test its strength or to analyze overall performance under different load types; can make a graphical analysis of performance or test server/script/object behavior under heavy concurrent load.
		Test creation involves associating GUI events with 'use case commands' created to describe what is intended in terms of the domain, utilizing the 'title' attribute of appropriate HTML tags.
		Allows developers to test down to the unit level by simulating the internal software interfaces (message queues, mailboxes, etc.) Tool can learn what request/response scenarios are being tested for future tests and can work with any protocol, any message definitions, and any network.
	www.softwareqatest.com /qatweb1.html (13104 words)

	Technorati Tag: load testing (Site not responding. Last check: 2007-08-16)
		Load with realistic mix of 1000's of users and monitors with end to end performances of the application.
		Load Testing for Slings and Rigging Marine and Industrial Supply is capable of a 650,000 lb.
		Load Testing and Monitoring Whether rolling out new functionality or a marketing campaign to drive new traffic Alertsite can help you ensure your site will scale to meet user demand.
	www.technorati.com /tags/load+testing (466 words)

	Load Testing (Site not responding. Last check: 2007-08-16)
		Various elements need to be considered before engaging in Load Testing.
		In construction smaller components can be tested as they added incrementally and then as an integrated whole system.
		Testers looking at load testing may want to consider using Monte Carlo simulations.
	www.softwaretest.force9.co.uk /cont461.htm (761 words)

	Performance Testing \| Performance Evaluation \| Load and Stress Testing- ReadyTestGo
		ReadyTestGo's load and stress testing services include testing the application for normal load, heavy load (stress), sudden increase in load (spike) and sustained load (endurance).
		Test beds are set up and load, stress and endurance tests are executed to check if your application can meet your performance objectives before going live.
		Monitors are deployed on all components of the application under test.
	www.readytestgo.com /load-and-stress-testing.htm (216 words)

	Load testing, stress testing - ANTS Load
		ANTS Load is used to predict a web application's behavior and performance under the stress of a multiple user load.
		ANTS Load Entry Level Edition is ideal for proof-of-concept testing, testing early on in the life cycle, or load testing small to medium-sized web applications prior to release.
		ANTS Load Professional Edition is ideal for load testing medium-sized web applications at all times throughout the development life cycle.
	www.red-gate.com /products/ants_load (206 words)

	Load Testing tools (Site not responding. Last check: 2007-08-16)
		Siege is an http regression testing and benchmarking utility.
		QuotiumPRO is a load testing solution able to measure and predict the behavior and performance of an application on a global scale.
		QuotiumPRO lets you load test both your infrastructure and the architecture of an application by simulating a large number of users with many different profiles.
	www.softwaretest.force9.co.uk /loadtest_tools.htm (477 words)

	Load Testing Software - Automated Performance Testing and Web Testing Software (Site not responding. Last check: 2007-08-16)
		Load testing from Mercury includes the load testing software LoadRunner, the industry-standard performance testing product for predicting system behavior and performance.
		With Mercury LoadRunner load testing software, you can obtain an accurate picture of end-to-end system load testing and verify that new or upgraded applications meet specified performance load requirements.
		It is the industry-standard load testing solution for predicting system behavior and performance, and the only integrated load testing, tuning, and diagnostics solution in the market today.
	www.mercury.com /us/products/performance-center/loadrunner (478 words)

	Load Testing Tools (Site not responding. Last check: 2007-08-16)
		QuotiumPRO - load testing solution provided by Quotium able to measure and predict the behavior and performance of an application on a global scale.
		it lets you load test both your infrastructure and the architecture of an application by simulating a large number of users with many different profiles.
		The vendor is Facilita witch provides load testing solutions across the enterprise and throughout the development life-cycle.
	www.load-testing-tools.com (382 words)

	Software Testing FAQ: Load and Performance Tools
		It creates test scripts that are used to simulate application transactions on the client/server system without involving end users or their equipment.
		A market leader with a track record in enterprise testing for over 20 years with an ISO 9000 certification, TPNS can be used to determine system performance and response time, to evaluate network design, to perform functional testing, and to automate regression testing.
		The same test suite used for server functional testing can also be used as a load test suite that not only monitors the servers response rate with the specified number and mixture of simultaneous requests, but also verifies whether the test loads cause functionality problems.
	www.testingfaqs.org /t-load.html (4449 words)

	Web Application Load Testing Software \| Load Testing Tool
		OpenLoad provides the first viable alternative to high priced and overly complex commercial load testing tools and low-end performance testing tools that are largely unsupported and lack the robust feature set required to adequately test today's enterprise-level Web applications.
		Open Load Tester V5.0 is the industry’s first easy to use, browser based, performance optimization solution for functional and load testing as well as performance monitoring of dynamic Web sites and applications.
		Open Load Tester V5.0 is powered by IBM WebSphere Application Server 5.0, and fully integrated with IBM WebSphere Studio Application Developer 5.0, an industry standard IDE with a full-featured code-editing, debugging, unit testing and management environment, making it easier for developers to test and fix bugs through a single interface.
	www.opendemand.com /openload (343 words)

	The Grinder, a Java Load Testing Framework
		The Grinder makes it easy to orchestrate the activities of a test script in many processes across many machines, using a graphical console application.
		The Grinder comes with a mature plug-in for testing HTTP services, as well as a tool which allows HTTP scripts to be automatically recorded.
		The Grinder 3 uses the powerful scripting language Jython, and allows any Java code to be tested without the need to write a plug-in.
	grinder.sourceforge.net (251 words)

	Load testing software - loadtesting.com
		Load testing increases your uptime of your mission-critical systems by helping you spot bottlenecks in your systems under large user stress scenarios before they happen in a production environment.
		Watch your system handle (or not) the load of thousands of concurrent users hitting your site before you deploy and launch it for all the world to visit.
		It is a shame when so much effort is put into building a web project only to realize that it won't scale after it has been deployed.
	www.loadtesting.com (229 words)

	WAPT - Web Application Load, Stress and Performance Testing
		WAPT 4.0 is a load and stress testing tool that provides you with an easy-to-use, consistent and cost-effective way of testing web sites, web servers, and intranet applications with web interfaces.
		You may test and analyze the performance characteristics under various load conditions to find bottlenecks of your web applications.
		This means that you should perform load testing to know how many concurrent visitors your site can serve flawlessly.
	www.loadtestingtool.com (312 words)

	Empirix - e-Load®
		It also allows you to monitor the performance of your back-end application infrastructure, during your load test, to identify bottlenecks and help you tune application performance.
		Scalable load generation allows you to simulate hundreds or thousand of users and more while minimizing the hardware required to run your test.
		Collaborative load testing allows multiple distributed users to share e-Load results during a running load test session and collaborate on application performance testing and tuning.
	www.empirix.com /?action=article&ID=418 (350 words)

	Software testing tool for load testing / performance testing web applications. (Site not responding. Last check: 2007-08-16)
		Software testing tool for load testing / performance testing web applications.
		Award-winning WebLOAD allows you to test the performance and scalability of your Web applications so you can deploy these applications with the confidence that they can handle the demands of actual usage.
		Since WebLOAD was built specifically to test Web applications, it has a series of unique advantages that make it the smart choice for your performance testing needs.
	www.radview.com /products/WebLOAD.asp (129 words)

	Segue refines Web load-testing package
		During the tests, the software checks if the content being delivered to end users is accurate and error-free, the company says.
		The software also reduces the risk of "swamping the system" by only reporting on the errors that occur during the test, rather than sending all the performance data at once.
		SilkPerformer V is available for $50,000 for unlimited load testing for up to 100 virtual users.
	www.networkworld.com /news/2001/1217apps.html (575 words)

	Compuware QALoad - Testing for application performance under heavy load
		Today's client/server systems are expected to perform reliably under loads ranging from hundreds to thousands of simultaneous users.
		Organizations need to perform repeatable load testing and determine the ultimate performance and potential limits of a system.
		QALoad helps you achieve loads that mimic realistic business usage as well as validate that the system can meet acceptable service levels.
	www.compuware.com /products/qacenter/qaload (185 words)

	Load Testing Software - Web Performance, Inc.
		Load testing software seems to come in two categories: high-end software that costs a year's salary, and low end utilities that are cheap but don't have all of the features you need.
		With WPT™ the new Application State Management™ feature will analyze the test case and configure dynamic variables for most websites automatically.
		After exploring other applications, and entertaining the idea of in house development, WPT allowed us to load test SSL enabled web applications with ease.
	www.webperformanceinc.com /load_testing (282 words)

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