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Tag: memory

5 posts

2026-07-27 csharp dotnet dotnet-11

How to diagnose a managed memory leak with dotnet-gcdump and dotnet-dump

A complete workflow for finding a managed memory leak in .NET 11: confirm growth with dotnet-counters, take two gcdumps and diff them, then collect a dump and use dumpheap, gcroot, and objsize in dotnet-dump analyze to find what is still holding the reference.

2026-06-20 csharp dotnet performance

What is Span<T> in C#, and when does it actually make your code faster?

Span<T> is a stack-only ref struct that points at memory you already own, so it has no backing allocation. It speeds code up in exactly three situations: replacing a heap buffer with stackalloc, slicing without copying, and tight loops where the JIT elides bounds checks. Everywhere else it changes nothing, and across an await it does not compile.

2026-06-01 flutter dart memory

How to Dispose Controllers in Flutter to Avoid Memory Leaks

AnimationController, TextEditingController, and ScrollController hold resources that Dart's GC cannot reclaim until you dispose them. Here is the correct pattern, the ordering rules, and how to catch leaks before they ship.

2026-05-25 comparison csharp dotnet

List<T> vs Span<T> vs ReadOnlySpan<T> in C#: when to reach for which

List<T> is a growable heap collection; Span<T> and ReadOnlySpan<T> are stack-only views over memory you already own. Use List<T> for anything you store, return from async, or grow; Span<T> for a mutable allocation-free view in a synchronous method; ReadOnlySpan<T> for read-only parsing over strings, u8 literals, and slices.

2026-05-04 csharp dotnet performance

How to convert T[] to ReadOnlyMemory<T> in C# (implicit operator and explicit constructor)

Three ways to wrap a T[] in a ReadOnlyMemory<T> in .NET 11: the implicit conversion, the explicit constructor, and AsMemory(). When each is the right call.