dotnet / dotnet/aspnetcore

Perf improvement: kestrel-header-symbols, kestrel-header-symbols

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area-perf perf-improvement
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C#
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Description

| Scenario | Environment | Date | Old RPS | New RPS | Change | Deviation | StDev | Dependencies |
| -------- | ----------- | ---- | ------- | ------- | ------ | --------- | ----- | ------------ |
| kestrel-header-symbols | Kestrel Linux: Invalid Header 11- Trends idna-intel-lin | 08/27/2026 23:59:51 | 1,292 | 1,329 | 0.00 % (37) :thumbsup: | 2.02 σ | 18.36 | Changes NameVersionDiff Microsoft.AspNetCore.Antiforgery.dll `11.0.0-rc.2.26425.121` -> `11.0.0-rc.2.26426.116` https://github.com/dotnet/dotnet/compare/e20a5af9c83aaf22b041bc9911de0cbfff9c7317...ba2e95a66f46b0e685fbec8e950b3c42bf7c583c Microsoft.AspNetCore.App `11.0.0-rc.2.26425.121` -> `11.0.0-rc.2.26426.116` https://github.com/dotnet/dotnet/compare/e20a5af9c83aaf22b041bc9911de0cbfff9c7317...ba2e95a66f46b0e685fbec8e950b3c42bf7c583c Microsoft.NETCore.App `11.0.0-rc.2.26425.121` -> `11.0.0-rc.2.26426.116` https://github.com/dotnet/dotnet/compare/e20a5af9c83aaf22b041bc9911de0cbfff9c7317...ba2e95a66f46b0e685fbec8e950b3c42bf7c583c |
| kestrel-header-symbols [Fixed] | Kestrel Linux: Invalid Header 11- Trends idna-intel-lin | 08/28/2026 10:43:04 | 1,303 | 1,344 | 0.00 % (41) :thumbsup: | 2.73 σ | 15.04 | Changes NameVersionDiff Microsoft.AspNetCore.Antiforgery.dll `11.0.0-rc.2.26425.121` -> `11.0.0-rc.2.26427.118` https://github.com/dotnet/dotnet/compare/e20a5af9c83aaf22b041bc9911de0cbfff9c7317...b1fab8293ff883daf3489c5776ec6e207a2ddbfe Microsoft.AspNetCore.App `11.0.0-rc.2.26425.121` -> `11.0.0-rc.2.26427.118` https://github.com/dotnet/dotnet/compare/e20a5af9c83aaf22b041bc9911de0cbfff9c7317...b1fab8293ff883daf3489c5776ec6e207a2ddbfe Microsoft.NETCore.App `11.0.0-rc.2.26425.121` -> `11.0.0-rc.2.26427.118` https://github.com/dotnet/dotnet/compare/e20a5af9c83aaf22b041bc9911de0cbfff9c7317...b1fab8293ff883daf3489c5776ec6e207a2ddbfe |

[PowerBI Dashboard](https://aka.ms/aspnet/benchmarks)

@sebastienros

Contributor guide

Open the contributing guide

Research direction

The body contains benchmark results for the Kestrel Linux invalid-header scenario and links the PowerBI dashboard, but names no source file, test, or entry point. Start by locating the benchmark definition for kestrel-header-symbols; done is not specified beyond improving the reported result, so scope and validation need maintainer clarification.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp, linux
Domain
backend, networking, performance
Issue type
Refactor
Difficulty
5/5
Estimated time
Over a week
Activity status
Active
Clarity
Needs clarification
Newbie friendliness
20/100

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