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Add runtime.md for .NET 11 Preview 2 - #10268

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richlander merged 10 commits into
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Mar 10, 2026
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Add runtime.md for .NET 11 Preview 2#10268
richlander merged 10 commits into
dotnet11-preview2from
dotnet11-preview2-runtime

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@jamesmontemagno

@jamesmontemagnojamesmontemagno commented Feb 17, 2026

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Please update the release notes here as needed for Preview 2.

/cc @richlander

@jongallowayjongalloway mentioned this pull request Feb 20, 2026
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@jongalloway

jongalloway commented Mar 6, 2026

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🚨 Please update these release notes for the March 10 release. If there’s nothing to announce for your area in this release, please comment here or close the PR. @richlander

agocke
agocke reviewed Mar 9, 2026
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### ThreadPool semaphore fixes and LIFO unification

Fixes an exponential backoff initialization bug in threadpool spinning and unifies the Windows/Unix LIFO waiting policy with adaptive spinning. Touches both CoreLib managed code and NativeAOT runtime. ([dotnet/runtime #123921](https://github.com/dotnet/runtime/pull/123921))

@agockeagockeMar 9, 2026

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This was reverted

steveisok
steveisok reviewed Mar 9, 2026
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Comment threadrelease-notes/11.0/preview/preview2/runtime.md

> **Note:** Exception stack traces (`catch (Exception ex) { Console.WriteLine(ex); }`) already look the same with or without runtime async, thanks to existing `ExceptionDispatchInfo` cleanup in the compiler-generated code. The improvement is in what you see *during* execution.

### Debugging improvements

@steveisoksteveisokMar 9, 2026

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The VS side of debugger changes has not yet merged. Should we wait to highlight this stuff until then?

agocke
agocke reviewed Mar 10, 2026
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Comment threadrelease-notes/11.0/preview/preview2/runtime.md
danroth27
danroth27 reviewed Mar 10, 2026
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danroth27
danroth27 reviewed Mar 10, 2026
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Comment threadrelease-notes/11.0/preview/preview2/runtime.md
@richlander
richlander merged commit 61a1507 into dotnet11-preview2Mar 10, 2026
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@richlander
richlander deleted the dotnet11-preview2-runtime branch March 10, 2026 18:31
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@agockeagockeagocke approved these changes
@rbhandarbhandaAwaiting requested review from rbhanda
@leecowleecowAwaiting requested review from leecow

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