Load Testing Blog
Showing posts tagged “Load Testing”
Case study: Lenox Finds a Baseline in the Cloud
For Lenox, makers of fine china and crystal, e-commerce has been an important aspect of the business for over ten years. When Lynch needed to test the Lenox website user capacity on short notice, Load Tester was the right tool for the job. It offered the features and flexibility to build complex, realistic test cases and identify performance bottlenecks. Read more about their experience.
Interview with Lawrence Nuanez of ProtoTest
ProtoTest, provider of consulting services in specialized software quality and test projects, uses Load Tester to help their clients determine how many users their websites can handle. I spoke with Lawrence Nuanez, Senior Consultant, to find out more.
Load Testing Fallacies: The Test Scenarios Must Be Completely Accurate
Last time, I talked about why it is ok to start testing early in the development process. I’m going to continue that thought process to discuss load testing without complete performance requirements. This Load Testing 101 article says “If the real end user is going to do work with your application in a totally different way than you test you are as good as with no testing at all.” While there is a nugget of truth hidden in there, it is easy to take away the wrong understanding.
One interpretation of that statement would be that “you must have … Continue reading »
How User Ramping Works – Part One
How we add new virtual users to a test can be confusing when you’re first starting out with Load Tester, and sometimes can result in tests that do not ramp up to the number of users you expect or otherwise behave strangely.
User Capacity Analysis
How to measure the maximum capacity of your website in terms of concurrent users.
Web Performance Load Tester 3.6 Gives Web Developers Easier, More Accurate Tests
New software includes click to configure test case development, visual performance indicators, user-level analysis and expanded compatibility with AJAX and .NET.
Durham, NC – May 7, 2009 – Web Performance, Inc. (WPI) released the most recent version of its industry-leading load testing application last week. Web Performance Load Tester version 3.6 includes a number of new features that make it even easier to use and more intuitive for its non-programmer user base.
One of the application’s most appealing new features is its use of visual displays and video demonstrations that let users with zero programming experience create test cases, run load … Continue reading »
Velocity Conference – Day 1
My first day at Velocity was long, but fun. I breathed a sigh of relief when my luggage finally arrived…10 hours after I did.
I attended part of a Load Testing workshop early in the afternoon that raised some interesting topics:
Why are steady ramps bad? They showed some examples of how this approach can result in the wrong conclusions about system capacity. I agreed heartily – I’ve blogged on the merits of a stepped ramp in load tests previously.
Abandonment rates – This is a feature that I’d like to get into Load Tester sooner rather than later. A basic … Continue reading »
How-To: Dynamic Field Names and Multi-Variable Extractors
Overview
You’re recording test cases, configuring them, replaying them, and running load tests. One day, you attempt to test a new web application. However, every time you attempt to run a replay, the replay throws an extractor error; it is unable to find a field in the page content of the replay to extract. ASM configured this field automatically, so why isn’t it working? You look at the replay content … and the field name isn’t there.
The usual culprit that causes this problem is a dynamic field name: a variable in a dynamic web page that not only changes in value, … Continue reading »
Search view added for Load Tester 3.6
As web applications become more sophisticated, configuration of testcases used to test the application becomes more difficult. The need for customization, beyond the automatic configuration provided in Load Tester, means that testers need to spend more time understanding the application. One common scenario finds the tester searching through the application pages to determine where a field is assigned, in order to configure a custom extractor to get the value dynamically. Several of the features added in Load Tester 3.6 makes this process much easier.
In the example below, the Search View is used to find a field with dropUsers in the … Continue reading »
Measuring the Performance Effects of Dynamic Compression in IIS 7.0
Enabling dynamic compression in IIS 7.0 can reduce the bandwidth usage on a particular file by up to 70%, but also reduces the maximum load a server can handle and may actually reduce site performance if the site compresses large dynamic files. Read the full report for a complete analysis.