iis

High memory in IIS due to scriptproxy.dll

One of my customers had a problem on his IIS server, where the IIS process hosting his web application was suffering from very high memory utilization over time. Eventually the process got so high in memory that the web application became completely unresponsive and incoming requests were no longer getting served. Based on these details, we began troubleshooting the issue as a memory leak/high memory issue. The first step was to capture a memory dump of the problematic process, when its memory usage...( read more ) Read More...

Troubleshooting System.OutOfMemoryExceptions in ASP.NET

When the .NET Framework was first released, many developers believed the introduction of the garbage collector meant never having to worry about memory management ever again. In fact, while the garbage collector is efficient in managing memory in a managed application, it's still possible for an application's design to cause memory problems. One of the more common issues we see regarding memory involves System.OutOfMemoryExceptions. After years of helping developers troubleshoot OutOfMemoryExceptions...( read more ) Read More...

POP QUIZ: What’s wrong with this code – part 3

Imagine you are a developer and your boss comes to you complaining that your piece of code has been deemed to be taking up too much memory and causing problems for the application.  You take a look at your code and you see the following, assume that Read More......( read more ) Read More...

High Memory part 6 – Fragmentation revisited

I have talked about a bunch of commands used to troubleshoot a managed memory problem in the past and given some situations of using them like: High memory, CPU, or other performance problems with .NET High Memory continued - Datatables High Memory part Read More......( read more ) Read More...

How do you test the performance of your web site?

I wanted to get a feel for what tools people are using to test the performance of their website.  My questions are: Do you check page-load times?  Do you dig in to see which files are taking the time How do you track down a page that uses a Read More......( read more ) Read More...

ASP.NET Tips: Finding what is taking up memory

There are some times that you want to figure out what is taking up your memory.  There are a few ways that you can do this and some limitations put on this by .NET and ASP.NET. Memory in a dump file If you are looking at a dump file, the first thing Read More......( read more ) Read More...

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 Read More......( read more ) Read More...

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 Read More......( read more ) Read More...

ASP.NET Tips: What to gather to troubleshoot - part 6 - Recycle due to memoryLimit

Here is another situation that you may come across and what to do in order to gather information about it. The following steps will configure DebugDiag to automatically capture a memory dump of the ASPNET_WP.exe process recycling when it exceeds the memoryLimit Read More......( read more ) Read More...

ASP.NET Tips: What to gather to troubleshoot - part 5 - OutOfMemoryException

So we already talked about what to gather when you are experiencing high memory .  But what if you are actually getting a System.OutOfMemoryException?  Here is how you capture a dump at the time you are running out of memory. The following steps Read More......( read more ) Read More...