If broken it is, fix it you should

Using the powers of the debugger to solve the problems of the world - and a bag of chips    by Tess Ferrandez, ASP.NET Escalation Engineer (Microsoft)

January, 2008

  • If broken it is, fix it you should

    ASP.NET hang/slowness on startup

    After making some changes to their domains one of my customers noticed that their ASP.NET 2.0 applications didn't respond anymore. HTML pages and images were serving just fine as well as their ASP.NET 1.1. sites, but all their 2.0 sites on all servers seemed to hang when browsing to them in IE. Looking at the IIS logs they noticed that they had two 401 requests to their pages but never got the 200 OK request for them which is usually the case when a page is served ok. When they ran aspnet_regiis...
  • If broken it is, fix it you should

    Learning .NET debugging

    I often get questions like How do I learn .net debugging? What books should I read? Where can I find more information? I know everyones learning style is different so this might not be the best way for you, but the way I try to learn things is by "teaching". For example the way I started out with .net debugging was by putting together a really silly .net debugging web cast series with one of my colleagues. Looking back at them now they make me laugh, both because seeing yourself on video is just...
  • If broken it is, fix it you should

    ASP.NET Hang and OutOfMemory exceptions caused by STA components

    I have talked about blocked finalizers before and this issue is a special case of blocked finalizers where we are not really finalizing a .NET object but rather cleaning up all Com Callable Wrappers (CCWs) and getting stuck doing that. Problem description: The situation we are facing is that the ASP.NET process starts to go hey wire both in response times and in memory usage. All of a sudden memory just starts growing and growing and we need to figure out why. Troubleshooting: We took...
  • If broken it is, fix it you should

    Using Reflector to search through code and resolve .NET issues

    As you already know, i spend my days analyzing dumps for customers, and more often than not I don't have access to the customers code. I could probably ask for it but it usually takes a long time and even then I often just get partial code, and sometimes, if the customer has multiple environments or if there has been recent changes, the code I would get may not correspond exactly to what was running in production when the dump was taken. I'm sure many of you are familiar with Lutz Roeder's Reflector...
  • If broken it is, fix it you should

    More ASP.NET debugging with SOS

    One of my colleagues has started a blog that is worth reading if you like this blog. His name is Tom and he is also an Escalation Engineer in the ASP.NET team but not only that, he is also one of the developers of sos.dll. Read his blog here: http://blogs.msdn.com/tom/ Tess
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