Kevin Gosse is a Microsoft MVP and .NET expert specializing in performance, debugging, and memory management.
53 articles from this blog
Explains a .NET Framework VerificationException when using readonly structs in partial trust environments and the underlying IL safety checks.
Part 3 of a series on writing a .NET profiler in C#, focusing on creating a source generator to automate boilerplate code for the profiling API.
Explains the risks of using .NET performance counters and how to read them directly from the registry for reliability.
A technical guide on implementing a .NET profiler in C#, focusing on mapping COM objects to .NET instances and using UnmanagedCallersOnly.
Explains a subtle bug where GC.KeepAlive fails to prevent garbage collection of a delegate in async code involving native methods.
Explains why function pointers fail with instance methods and large structs in C#, detailing a stack corruption issue.
Explores writing a .NET profiler in C# using NativeAOT to overcome traditional C++ limitations and self-profiling issues.
Explains how to write native WinDbg debugging extensions using C# and .NET 7's NativeAOT feature for better interoperability.
A technical guide on using WinDbg to locate and switch to a specific managed thread by its ID in a .NET memory dump.
A technical guide on how AsyncLocal values are stored in .NET and the process of retrieving them from a memory dump using WinDbg.
Introducing DynaMD, a C# library that simplifies .NET memory dump analysis with a more natural syntax than ClrMD.
How to disable PerfView's grouping of unresolved CPU frames under '?!?' to better analyze performance bottlenecks.
A deep dive into debugging a NullReferenceException crash on ARM64 Linux, revealing a missing null check in the .NET runtime's exception handling.
A technical walkthrough of debugging a native deadlock in a .NET application running on Linux, using tools like dotnet-dump and analyzing thread stacks.
A deep dive into debugging an AccessViolationException in .NET's ObjectNative::IsLockHeld method, tracing orphaned locks in an Orchard application.
A deep-dive investigation into an AccessViolation crash in the .NET runtime's ObjectNative::IsLockHeld method, encountered while testing a tracer.
Final part of debugging an InvalidProgramException caused by a profiler bug, focusing on analyzing faulty IL code from a memory dump.
Debugging an InvalidProgramException in a profiler by finding generated IL code in a memory dump (part 2 of a series).
A deep dive into debugging a rare .NET InvalidProgramException caused by faulty IL generation in Datadog's automated instrumentation.
A developer explains a tricky bug caused by global WebRequest overrides in .NET and the simple fix using CreateHttp.
