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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 stream is defined above this and is correct: const String myConstStr = "CurrentFile" ; const String stylesheet = "..\\..\\XSLTFile1.xslt" ; int i = 0;   for (i = 0; i < 1000; i++) { XslTransform xslt = new XslTransform(); xslt.Load(stylesheet);   //Load the XML data file. String filename = myConstStr + i.ToString() + ".xml" ; XPathDocument doc = new XPathDocument(filename);   //Create an XmlTextWriter to write to the stream. XmlTextWriter writer...

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 3 - Native Heap High Memory part 4 - Managed Strings High Memory part 5 – Fragmentation There is another way that we could see a problem that involves fragmentation.  Let’s consider the situation where we see the same situation we saw before, namely: But we do see a bunch of files listed when we look in lm .  So what should this tell us about the problem?  Well, first off, since the files are showing up in lm, we know the problem isn’t the same as, Dynamic Assemblies and what to...

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 lot of memory How do you track down a high CPU consuming page I don’t want to list any possible tools as I’d like to hear what people are using without me putting any suggestions out. If I don’t see some being mentioned, I’ll be sure to bring it up so we have a holistic view of the tools. Look forward to seeing what people use. Read More...

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...

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...

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...

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...

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...

Identifying a Memory leak A Memory Leak in an IIS process (INETINFO.EXE, DLLHOST.EXE, W3WP.EXE) occurs when Memory Usage in Task Manager continues to consume more than 50% of the physical RAM until running out of system memory or until the process stops...

A common problem we see when moving to .NET all revolves around the finalizer.  There are a few reasons that this happens: Developers move from C/C++ to C# and are used to created classes with a constructor and destructor. Developers don’t understand...