Performance testing is a subset of performance engineering, an emerging computer science practice which strives to build performance into the implementation, design and architecture of a system.

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19
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1answer
21k views

Where can I find good JMeter tutorials?

I have just been assigned the tasks of doing some research and doing some JMeter tests of my own to get familiar with performance testing. As I have never used this tool before, I would just like to ...
11
votes
9answers
752 views

Performance testing - a way in?

We have an a browser based application that is built on the Microsoft Stack, specifically .NET 3.5. It also uses Ajax, iframes, jQuery etc. At the moment we are just guessing at the concurrency ...
11
votes
2answers
245 views

Measuring test performance when there is high variance

I am running single purpose performance tests on a daily basis. Currently, I run each test 3 times and average them out. But I get fluctuations from day to day which make it difficult to detect ...
9
votes
5answers
10k views

How do you calculate the number of virtual concurrent users to use in a load test given data on actual site traffic?

When working on performance testing, one of the problems I've faced is trying to translate real-world web application traffic to simulated traffic. A practical example is for an eCommerce site. ...
6
votes
3answers
238 views

Should you preload DLL's in performance tests?

When running automated performance tests, is it better to preload any DLL's which would slow the first run of a test? This would improve the consistency of the test results but would not reflect the ...
6
votes
3answers
163 views

performance-testing systems on virtual machines that normally run on physical machines

My employer runs some of our systems on physical machines with attached hard drives. I am charged with performance-testing those systems. For cost reasons, I've been asked to test those systems ...
5
votes
5answers
557 views

What Are Some Unobvious Differences Between Testing a Web Application and a Desktop Application?

In the same flavour of this question, what are some unobvious differences between testing a web application and a desktop application? I've recently started looking at automating some GUI tests for a ...
5
votes
4answers
2k views

Looking for open source, Java-based tool for performance testing

Goal: I have an enterprise application written in java to test for performance. I need to do it separately, so I will be basically simulating a user interaction over http/https. My findings: ...
4
votes
5answers
165 views

Making sense of performance regressions

Imagine a situation in performance regression testing where commit A is very deleterious to page performance, but does not trigger a failure - it's just under the level required to do that. Commit B ...
4
votes
3answers
634 views

Load test with multiple credentials

Okay so I have created a very simple webtest. The purpose of this webtest is to attempt to login whilst simulating a few failing attempts. The webtest has the obvious credentials associated with it:- ...
4
votes
8answers
482 views

What are the deliverables of the QA department?

The company I work for conducts quarterly performance reviews. As a member of our small QA team I've been ask to help define this process. A lot of what I do is identifying issues and collaborating ...
4
votes
5answers
2k views

Performance Testing a cloud application

What are the best approaches and what concerns are there about performance testing a web application that is hosted in the cloud?
4
votes
1answer
2k views

How to stop thread in JMeter?

I need to stop thread in JMeter when some condition is satisfied. How can i do this? I suppose there should be some method like Thread.Stop() or something like this but can't find concrete info.
4
votes
1answer
108 views

In performance testing, when have MFAT approaches been successfully applied (in addition to an OFAT approach)?

Background: MFAT = "Multiple Factors at a Time" OFAT = "One Factor at a Time" In the field of Design of Experiments, practitioners in a large variety of fields (including software testing) have ...
3
votes
2answers
632 views

What are the most useful KPIs for tester

There are many KPI (Key Performance Indicators) suggested to measure the performance of software tester. My concern is what are the most useful/ efficiency KPIs for a tester?
3
votes
5answers
133 views

Should I do performance testing of my web application having two instances behind a load balancer?

My organization recently created a Performance testing environment. Our primary goal of performance testing is to catch performance degradation with future releases of our application. In Production, ...
3
votes
6answers
4k views

Tools to measuring page rendering time

I'm using Jmeter at my organization for performance testing. The application is a secured web portal that provides a lot of reports and documents to its user. A major issue that I've run into is ...
3
votes
1answer
110 views

How to estimate “how many servers our company sould purchase for this web app” with load/performance testing?

this is a question I faced in an interview: A web app is going to go online and the manager want you to find out how many servers the company should purchase. We have one server(used by testers) and ...
3
votes
2answers
764 views

Jmeter's threads got stuck and never end

I'm working on some Jmeter scripts, everything seems to work just fine; they got recorded and run properly (for a couple of users anyway). The problem appears when I run the scripts for more than ...
3
votes
1answer
88 views

Can a Business Intelligence solution be tested?

I'm developing a business intelligence solution using Microsoft BI Development Studio. I'm Mainly using SSIS , SSAS and SSRS. The users will be accessing the reports from a web application (ASP.NET ...
3
votes
1answer
302 views

Unix Performance testing - training content

My company is involved with performing performance testing and now they want to perform couple of training related with executing those tests on the servers based on Unix systems. We will test ...
2
votes
5answers
638 views

Learning resources for Performance Testing and LoadRunner

This question might be off-topic and/or Subjective but I am asking this question because I could not fine any suitable answers via Google. I am a Manual tester with knowledge of Java, SQL Server. ...
2
votes
3answers
591 views

JMeter Concurrent Users Count Practice

I have a web application which is working in production and there are 2000+ users of my application. Now I have to perform performance testing on the system so is there any idea how many concurrent ...
2
votes
3answers
138 views

Is my test a perf unit functional smoke test or something else?

Or how I learned to stop worrying and love the bomb. Each test is different. Some are big and talk to databases, others quick and self contained. We all know we'd prefer the fastest and most robust ...
2
votes
3answers
2k views

What are the best tools available to test performance of a MVC web site

I am new to QA. I need to find best tools available to test performance of a MVC web site. Please help me.
2
votes
1answer
143 views

Finding client-side bottlenecks in Silverlight

I'm in charge of load testing and finding bottlenecks in a Silverlight application - no functionality testing, just load and performance testing. I don't know much about the underlying core of ...
2
votes
2answers
117 views

How do I compare the performance of two .toString() methods?

Say I want to compare the performance of Java's StringBuilder.toString() with new String(char[]) for strings from one to 3000 characters in length. I do know beforehand how long the resulting string ...
2
votes
4answers
343 views

Why LR tool is not able to capture browser rendering time?

How can I capture the browser rendering time?
2
votes
1answer
1k views

Passing a dynamically created query string between requests in web tests?

So we have the following type of a URL: http://www.myurl.com/mypage.aspx?suid=145db467-907e-4e3d-b944-c1666f9d08d6 This suid query string is generated dynamically and is unique to the specific ...
2
votes
1answer
45 views

How do I test Aspects (AOP)?

I have recently written a bunch of aspects (using PostSharp in C#) that will be applied to methods in some high traffic sites. How should I make sure they are going to perform? Can anyone recommend ...
2
votes
2answers
213 views

Open source Projects for Performance/Load/Stress Testing

I am a Software Testing Enthusiast and i have mostly worked on Functional Testing(Manual). I am interested in performance testing and i have worked on a very small project where i used LoadRunner. I ...
2
votes
0answers
348 views

How to deserialize and correlate Binary Large Objects in Load Runner 11.5 Web Custom Request?

I'm working on a Silverlight based application. We've recorded the scripts using Load Runner 11.5 and while replaying to find dynamic values for correlation, we found out that the entire data in a ...
1
vote
4answers
279 views

Performance testing resources

Please share any good performance testing resources which you have come across in past or referred to while working or learning about performance testing.
1
vote
3answers
769 views

When should I start doing performance testing of a web-app?

Our company has started developing a new big web application. In a few months we testers will start integration testing, functional testing and regression testing both manual and automatic. I am ...
1
vote
2answers
682 views

Visual Studio 2010 Performance Testing Javascript not supported

Quite simply the question in the title, when I run test it by default runs it within my visual studio. This doesn't seem to support JavaScript which makes all my test's invalid. Is there anyway to ...
1
vote
2answers
2k views

Speed up launch of WebDriver Firefox Window

When WebDriver initializes, there is a long waiting time when a browser window launches before the actual automated test begins. How can I speed this up? Is there a way to have a browser window ...
1
vote
2answers
95 views

JMeter - Unable to capture the request after click on download link

I am facing one of the problem in my application at the time of downloading a file. I am unable to capture the request after click on download link. So may be anybody can guide me how to capture these ...
1
vote
1answer
76 views

How to detect performance issues within native Android app

What tools or techniques can be used to performance/load test a native Android application? Are there any that can detect the root cause of performance issues and suggest a solution?
1
vote
5answers
158 views

Lightweight load & performance testing frameworks

Which lightweight load and/or performance testing frameworks could you recommend? some considerations: Configuration with not too much coding (some JS would be okay) command line + text editor ...
1
vote
2answers
170 views

Is my approach to performance testing in Linux environment correct?

I want to do performance testing in linux environment for a C++ application. I need to measure the CPU usage, Memory usage of the application. This application is a multi threaded application. In ...
1
vote
1answer
119 views

Simulating a click in web performance tests

I am working with web-test in visual studio test system, without writing a code test, is there a way to invoke a click on a link/button/submit item? I am thinking of doing this by adding a request in ...
1
vote
3answers
163 views

Using Charles Proxy to test mobile app network

I would like to test the behavior of my app in case of slow network. Can Charles Proxy do it? please give me some guidance. Many thanks.
1
vote
2answers
34 views

SmartBear WeloadUI doesn't stop

I'm new at WebloadUI and although seems to be an amazing tool, I'm having problems simulating concurrent users. I record the test using the methodology explained in the SmartBear documentation, I ...
1
vote
1answer
157 views

How to test latency and performance of application virtualization?

I have a solution where user can access desktop application in browser using application virtualization that is implemented with the help of ThinRDP. I would like to know, what is the latency of this ...
1
vote
1answer
204 views

How to simulate low RAM on a machine?

On an old build there was a problem with one component that consumed a lot of RAM. As a result, another component started failing with a wrong error message. The first component has been fixed and ...
1
vote
3answers
221 views

Performance / Bottle Neck Monitoring Tool

I'm looking for a performance monitoring tool that is capable of generating different performance parameters for web-application(s). The tool should be able to detect bottle necks (if any) and should ...
1
vote
1answer
228 views

Visual studio web performance testing for invalid input

I am trying to test an input field to make sure it is behaving correctly with invalid input. But when I try to insert text with quotes and add a validation rule for it, the test fails. It seems that I ...
1
vote
1answer
49 views

Scoring a performance test

We run performance tests in QA. They follow a familiar pattern. A multi-threaded client generates sends traffic to a server. The traffic pattern is configurable: it might be a constant number of ...
1
vote
1answer
249 views

Are there any good tutorials on how to set up JMeter to load test a deployed ASP. NET web app?

I'm having trouble finding a decent tutorial on how to set up JMeter to load test a deployed ASP.NET web app? Does it have to run on localhost or can it be used to test a deployed app? I would like ...
1
vote
1answer
246 views

Performance testing tool suggestion for Node.js and ASP.NET

I am to carry out performance tests on Node.js and .NET. This is an academic exercise. I have searched on Google for performance testing tools, and I came across such tools as HP LoadRunner, and ...