Introduction There is a file called aspnet.config in the .Net framework installation. This file is used to specify startup flags for both ASP.NET and CLR for those settings that are needed very early in the worker process lifetime, when the config...

Introduction. A couple of new features are introduced in ASP.NET 4.5 to improve startup time of web apps. Both features use a flag on the web.config to enable them. The features don’t do any magic by themself. They just enable features available...

Disclaimer: The article below discusses pre-release features and performance numbers. Some of these features could change on the RTM version. Also, the actual performance numbers could change from now until we ship. During .Net 4.5 development we tried...

Disclaimer: The article below discusses pre-release features. Some of these features could change on the RTM version. The scenario The sample scenario we considered here is the hypothetical page in which we need to aggregate the results of five...

Introduction. There was a bug in ASP.Net 2.0 in which the “ASP.NET\Requests Queued” performance counter only reported values when a request was queued in the ASP.Net Queue. It didn’t count the requests that were waiting for the CLR...

Introduction Many users seem to run into issues when using ASP.NET Performance counters. With that in mind, I decided to write this article to explain, in as much detail as possible, how the ASP.NET Performance counters were implemented. In the hope...

Introduction It’s not a secret that the less server controls you have in an ASP.NET web page the better the performance. The memory allocation of the objects is fast but processing will vary depending on many factors. Additionally, the garbage...

The tool that we are providing here will allow you to collect ETW traces for ASP.NET requests and look at them in a more friendly view

...