Debugging from an ASP.NET and Azure Engineer. Posts are from customer issues and things I feel may be useful.
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Now Available: Psscor4 – Debugger Extension for .NET 4.0
I am very happy to announce that Psscor4 is now available for download. You can download it from: Psscor4 Managed-Code Debugging Extension for WinDbg This should have the same functionality as Psscor2 does but it works against the .NET 4.0 Framework. Please let me know if you run into any...
28 Apr 2011
Web Site Stops Responding for 15-25 seconds
There are a number of reasons that a web site could have a delay (hang) that could cause problems. I am going to talk about a common one that we see which is the CRL. What we have seen in the past is the Crypto API’s are trying to update the Certificate Revocation List (CRL) from the internet....
28 Oct 2008
ASP.NET and Performance
I wanted to talk about monitoring performance in ASP.NET for a bit. I have already posted a few postings that talk around this issue, namely: ASP.NET Debugging - High Memory part 5 – Fragmentation ASP.NET Debugging - ASP.NET Tips- How to use DebugDiag to track down But there are some other things...
23 Jun 2008
ASP.NET Tips: What to gather to troubleshoot
So now that I am done with all the individual posts, I thought I would wrap them all together. So here are all of the posts that I created on gathering information when you are having a problem. Please keep in mind that these are geared towards the type of information you would be sending to Microsoft...
21 May 2008
ASP.NET Tips: What to gather to troubleshoot - part 4 - Deadlocks
There are two ways to gather data in a Deadlock situation. If you are using Windows 2003 or later (IIS 6.0 or later), then follow the steps in the KB 828222 If you are using an older version of IIS, then follow the steps below: Before the issue occurs A. Download DebugDiag: ===================...
14 May 2008
POP QUIZ: How to Troubleshoot a Hang
For this quiz. Let’s say that you run a web server and your customers complain that the site is running slow. What do you do to troubleshoot it? As a follow-up, if you figure out that one page is the problem, what do you do to look into what is causing that page to be slow? I’ll accept answers...
7 May 2008
ASP.NET Tips: What to gather to troubleshoot – part 1 – High CPU or Hang
On machines running IIS5 and IIS5.1, these are the Inetinfo.exe, DLLHost.exe and/or ASPNET_WP.exe processes. On machines running IIS 6 or 7, this is the w3wp.exe process. The following steps will allow us to get log files of the processes hosting the IIS or ASP.NET applications, as well as obtain the...
2 May 2008
ASP.NET Tips: How to use DebugDiag to track down where a performance problem is coming from
We recently had a case where the customer was having performance problems. They were seeing requests take a few minutes to return and didn’t know what was happening. So they took some dumps while the problem was happening. So we ran this dump through DebugDiag using the Crash/Hang script and looked at...
25 Apr 2008
Hangs and how to solve them - part 2 - Queuing
So in a previous post, we began discussing hangs, Hangs and how to solve them - part 1 - Deadlocks . So we will now move on to another common problem we see with ASP.NET... Request Queuing. How to tell Queuing is happening So the first step is to see if this is really your problem. One way to see...
25 Mar 2008
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