Today, I learnt something new with SQL Server Profiler while doing performance testing of an internal Microsoft application. It is about SQL Server Blocked Process Report. Using SQL Server Blocked Process report, one can find the portion of the code that...

Performance Development Lifecycle for IT (PDL-IT) is systematic approach developed by Microsoft’s ACE team in order to improve the application performance of Microsoft’s line of business (LOB) and web applications built on top of Microsoft...

PerformancePoint planning server 2007 is a multi-tier architecture consisting of technologies such as Microsoft SQL Server 2005, SQL Analysis services, web services and ASP.NET web applications hosted on IIS and Microsoft Office Excel plug-in. With all...

Several white papers have been published by the PerformancePoint Product team on the best practices of PerformancePoint Server 2007. We recommend the architects, developers, testers, deployment engineers and Operational engineers to read and follow best...

The Microsoft Anti-Cross Site Scripting Library V3.0 (Anti-XSS V3.0) is an encoding library designed to help developers protect their ASP.NET web-based applications from XSS attacks. It differs from most encoding libraries in that it uses the white-listing...

In several of the performance tuning projects I have done, the web pages with security settings such as SSL or Windows authentication are generally slow compared to other pages. In this post, I analyze how SSL performance can be monitored in IIS 6.0 As...

I happened to use this new performance tool called Visual Round trip analyzer for one of my recent projects. Here’s a little description given on the VRTA download page . The Visual Round Trip Analyzer tool helps web developers and testers visualize...

“Effects of Recession” is the burning topic of the moment and everyone is concerned about cost-cuts and other measures to overcome the crisis. I attended few talks by business leaders on economic collapse and crisis that’s going on. It is fascinating...

From my past experience I have learned that most of the project teams are not aware of App Pool properties of IIS. They tend to rely on the default values of App Pool. Even though the default values are chosen to give better performance in general, the...

There are various reasons for a deadlock can occur on the web server. In this blog post, I would be pointing out the various ways to resolve aspnet_isapi.dll related deadlocks on web server. If the deadlock has occurred on the web server, you should notice...

These are the resources I have found on Performance testing and tuning of Exchange server. To be frank, I haven’t done any performance testing on Exchange server till date. Sharing these resources for those who are about to begin performance testing for...

I was amazed when I observed “UTC” time tag associated with IIS logs. In this blog post, I would be explaining what UTC time is, how it is different from GMT, how it is been used in IIS logs and the difference it makes. Being physics enthusiastic, it...

Sort warnings are raised by the SQL server where there is insufficient available memory on the server to carry out sort operations within a query. In such cases, sort operation is divided into multiple steps affecting the overall performance of the query...

One of the important process that you need to monitor while doing Performance testing is w3wp.exe process. It is an IIS related process and runs whenever IIS is configured in Worker Process Isolation mode. By default, IIS runs in Worker process Isolation...

That’s the phrase you see assigned to the hidden variable in hotmail passport authentication. You might notice this phrase when you record the web test for a webpage containing passport authentication. The form post parameters of the passport authentication...

Customer satisfaction is always a tough commitment given by a Service Provider to its clients but then it’s a must for a business to run. The behavior of a Customer is always unpredictable and it’s the responsibility of the Service Provider to be prepared...

WCF offers significant performance results compared to the other existing distributed technologies such as ASMX and WSE. In terms of throughput, i.e. number of transactions per second, WCF is 25-50% faster than traditional ASP.NET Web Services. A detailed...

Hi, I am Mohd Abubakr, Performance Engineer at ACE Team, Microsoft. My basic intension of starting this new blog space on Web Application Performance is to educate developers and software community about the importance of Performance in Web Applications...