Accelerated .NET Memory Dump Analysis
Accelerated .NET Memory Dump Analysis
Training Course Transcript and WinDbg Practice Exercises for .NET Core and Framework, Fourth Edition
About the Book
The full transcript of Software Diagnostics Services training with 20 step-by-step exercises, notes, source code of specially created modeling applications and selected Q&A. The course covers 22 .NET memory dump analysis patterns plus additional 15 unmanaged patterns. Learn how to analyze .NET Core 5 and .NET Framework CLR 4 application and service crashes and freezes, navigate through memory dump space (managed and unmanaged code) and diagnose corruption, leaks, CPU spikes, blocked threads, deadlocks, wait chains, resource contention, and much more. The training consists of practical step-by-step exercises using Microsoft WinDbg debugger to diagnose patterns in 64-bit and 32-bit process memory dumps. The training uses a unique and innovative pattern-oriented analysis approach to speed up the learning curve. The fourth edition has 7 new .NET Core exercises added for the latest WinDbg version and Windows 10 and updated command highlighting for the existing 12 .NET Framework exercises from the previous edition. This edition also includes a possibility to use a Docker WinDbg image with required symbol files instead of a local Debugging Tools for Windows installation. Prerequisites: Basic .NET programming and debugging. Audience: Software technical support and escalation engineers, system administrators, DevOps, performance and reliability engineers, software developers, and quality assurance engineers.
Table of Contents
About the Author 5
Introduction 7
Practice Exercises (.NET Core) 23
Exercise 0: Download, setup and verify your WinDbg or WinDbg Preview installation or Docker WinDbg image 28
Exercise Core.PN1: Analysis of an application process dump (ApplicationA, 64-bit) 41
Exercise Core.PN2: Analysis of an application process dump (ApplicationA, 32-bit) 70
Exercise Core.PN3: Analysis of an application process dump (LINQPadB, 64-bit) 92
Exercise Core.PN5: Analysis of an application process dump (LINQPadC, 64-bit) 126
Exercise Core.PN7: Analysis of an application process dump (ApplicationD, 64-bit) 146
Exercise Core.PN9: Analysis of an application process dump (LINQPadD, 64-bit) 161
Exercise Core.PN11: Analysis of an application process dump (LINQPadE, 64-bit) 177
Practice Exercises (.NET Framework) 183
Exercise Framework.PN1: Analysis of an application process dump (ApplicationA, 64-bit) 188
Exercise Framework.PN2: Analysis of an application process dump (ApplicationA, 32-bit) 207
Exercise Framework.PN3: Analysis of an application process dump (LINQPadB, 64-bit) 223
Exercise Framework.PN4: Analysis of an application process dump (LINQPadB, 32-bit) 246
Exercise Framework.PN5: Analysis of an application process dump (LINQPadC, 64-bit) 269
Exercise Framework.PN6: Analysis of an application process dump (LINQPadC, 32-bit) 284
Exercise Framework.PN7: Analysis of an application process dump (ApplicationD, 64-bit) 303
Exercise Framework.PN8: Analysis of an application process dump (ApplicationD, 32-bit) 330
Exercise Framework.PN9: Analysis of an application process dump (LINQPadD, 64-bit) 345
Exercise Framework.PN10: Analysis of an application process dump (LINQPadD, 32-bit) 361
Exercise Framework.PN11: Analysis of an application process dump (LINQPadE, 64-bit) 378
Exercise Framework.PN12: Analysis of an application process dump (LINQPadE, 32-bit) 388
Conclusion 399
Application Source Code 407
ApplicationA 409
LinqB 410
LinqC 411
ApplicationD 413
LinqD 415
LinqE 417
Selected Q&A 419
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