Analyzing .Net Application Memory Usage And Issues
1 like1,518 views
.NET applications can experience memory issues despite having garbage collection. The document discusses the use of profiling tools like .NET Memory Profiler, ANTS Profiler, and CLR Profiler 2.0 to track memory allocations, manage leaks, and analyze memory usage effectively. It also provides resources for further reading and improving .NET application performance.
Analyzing .Net Application Memory Usage And Issues
- 1. Analyzing .NET Application Memory Usage and Issues Using Free and Commercial Profiling Tools Presented by Greg Sohl © 2006, Gregory M. Sohl
- 2. Memory Issues? Huh? .NET has Garbage Collection. I don’t have to worry about memory anymore! Users have lots of memory now. I don’t have to worry about using lots of memory anymore! Windows has virtual memory space. I don’t have to worry about using lots of memory anymore!
- 3. Common .NET Memory Issues Too much allocation Memory allocations are long lived Managed memory leaks – reference leaks Work “with” the Garbage Collector. It’s your friend - but only if you are nice to it.
- 4. Why Use a Profiling Tool? To understand how your allocations correspond with the assumptions made by the GC Track unintentional references to instances (leaks) Track references that are being held too long
- 5. 3 Allocation Profilers .NET Memory Profiler – SciTech Commercial – best of breed Ants Profiler – Red Gate Commercial – Useful, but light weight feature set CLR Profiler 2.0 – Microsoft Free – Powerful, but challenging to use Others listed in resources
- 6. Definitions Root – The base object holding references to other objects Examples: A static field, a local variable or a method parameter. Root Path - The path of referees from the selected instance to a root Garbage Collection – The process by which objects with no root (unreachable objects) are cleaned up from the heap.
- 7. Sample - Conway’s Game of Life A simulation of cellular automation. http://en.wikipedia.org/wiki/Conway's_Game_of_Life Pulsar Pattern
- 8. Demo - .NET Memory Profiler Cream of the crop profilers Can attach to running processes Show native memory usage Great real-time view Copy grids to clipboard Low impact mode
- 9. Demo - CLR Profiler 2.0 For the MacGyver in you. A robust tool, without all the modern conveniences.
- 10. Demo - Ants Profiler Good tool with basic features Memory analysis a recent addition to execution analysis No real-time or IDisposble analysis Best thread support
- 11. Resources .NET Memory Profiler http://memprofiler.com/ Ants Profiler http://www.red-gate.com CLR Profiler 2.0 http://www.microsoft.com/downloads/details.aspx?familyid=A362781C-3870-43BE-8926-862B40AA0CD0&displaylang=en Or http://tinyurl.com/ozsgr
- 12. Resources DevPartner Studio Professional Includes a memory profiler http://www.compuware.com/products/devpartner/studio.htm
- 13. Resources Introduction to the CLR Profiler http://msdn.microsoft.com/msdntv/episode.aspx?xml=episodes/en/20050217CLRPS/manifest.xml Profiling Managed Code with the CLR Profiler http://msdn.microsoft.com/msdntv/episode.aspx?xml=episodes/en/20030729clrgn/manifest.xml How To: Use CLR Profiler http://msdn2.microsoft.com/en-us/library/ms979205.aspx CLR Profiler (v1.1) http://www.microsoft.com/downloads/details.aspx?familyid=86ce6052-d7f4-4aeb-9b7a-94635beebdda&displaylang=en
- 14. Resources Improving Managed Code Performance (P&P) http://msdn2.microsoft.com/en-us/library/ms998547.aspx Code Review: .NET Application Performance http://msdn2.microsoft.com/en-us/library/ms998574.aspx Checklist: Managed Code Performance http://msdn2.microsoft.com/en-us/library/ms979052.aspx Improving .NET Application Performance and Scalability (full Patterns and Practices book) http://msdn2.microsoft.com/en-us/library/ms998530.aspx
- 15. Resources Rico Mariani's Performance Tidbits (Blog) http://blogs.msdn.com/ricom/default.aspx Garbage Collection: Automatic Memory Management in the Microsoft .NET Framework (Jeffery Richter) http://msdn.microsoft.com/msdnmag/issues/1100/gci/ Garbage Collector Basics and Performance Hints (Rico Mariani) http://msdn2.microsoft.com/en-us/library/ms973837.aspx
- 16. Thank You! Questions?