English 中文(简体)
OutOfMemoryException, large Private Data
原标题:

In previous series:

OutOfMemoryException, stack size is huge, large number of threads

I have a .net windows service that consumes a lot of memory. The GC heap is not big. Also the stack size is not big. What is big is something called a private data. Also I can see in task manager that my application consumes a lot something that taskmanager calls a handle. My application consumes 2326 handles. I believe that these handles are some windows handles that occupy private data. I can see that this private data is occupied by blocks marked as Thread Environment Block. What is that?

Screenshot of my application memory usage by VMMap

Screenshot of my application memory usage by Task Manager

UPDATE

I run ProcessExplorer. I have two instances of my service running at the moment. I can see that they consume a lot of virtual memory for Gen2 GC. This look suspicios. Also total reserved for GC Heap size is the same for two processes.

alt text

最佳回答

It seems that you have classic memory leak, when newly created objects can not be collected because they are referenced from a garbage collection roots.

The most effective way to get rid of such problem - use WinDBG + SOS and !gcroot command. Example of memory leak bug investigation can be found here: http://blogs.msdn.com/tess/archive/2008/04/03/net-debugging-demos-lab-7-memory-leak-review.aspx

Good luck!

问题回答

Yes, quite a resource hog. I m guessing at variables you ve marked with the [ThreadStatic] attribute. You ve got way too many threads.





相关问题
Manually implementing high performance algorithms in .NET

As a learning experience I recently tried implementing Quicksort with 3 way partitioning in C#. Apart from needing to add an extra range check on the left/right variables before the recursive call, ...

Anyone feel like passing it forward?

I m the only developer in my company, and am getting along well as an autodidact, but I know I m missing out on the education one gets from working with and having code reviewed by more senior devs. ...

How do I compare two decimals to 10 decimal places?

I m using decimal type (.net), and I want to see if two numbers are equal. But I only want to be accurate to 10 decimal places. For example take these three numbers. I want them all to be equal. 0....

Exception practices when creating a SynchronizationContext?

I m creating an STA version of the SynchronizationContext for use in Windows Workflow 4.0. I m wondering what to do about exceptions when Post-ing callbacks. The SynchronizationContext can be used ...

Show running instance in single instance application

I am building an application with C#. I managed to turn this into a single instance application by checking if the same process is already running. Process[] pname = Process.GetProcessesByName("...

How to combine DataTrigger and EventTrigger?

NOTE I have asked the related question (with an accepted answer): How to combine DataTrigger and Trigger? I think I need to combine an EventTrigger and a DataTrigger to achieve what I m after: when ...

热门标签