dotnet / dotnet/aspnetcore

Perf improvement: kestrel-header-symbols

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area-perf perf-regression
Dominant language
C#
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Description

| Scenario | Environment | Date | Old RPS | New RPS | Change | Deviation | StDev | Dependencies |
| -------- | ----------- | ---- | ------- | ------- | ------ | --------- | ----- | ------------ |
| kestrel-header-symbols | Kestrel Linux: Invalid Header 7- Trends Amd Lin2 | 02/28/2026 13:52:48 | 7,896 | 9,031 | 0.00 % (1,135) :thumbsup: | 4.45 σ | 254.96 | Changes NameVersionDiff Microsoft.AspNetCore.App `11.0.0-preview.3.26124.102` -> `11.0.0-preview.3.26127.120` https://github.com/dotnet/aspnetcore/compare/36ea4de4a4409ace6bdf48c2dae2b6713f47c1b9...e95736fe223fcbea38c903fae50e0dcfd07daf99 Microsoft.NETCore.App `11.0.0-preview.3.26124.102` -> `11.0.0-preview.3.26127.120` https://github.com/dotnet/runtime/compare/36ea4de4a4409ace6bdf48c2dae2b6713f47c1b9...e95736fe223fcbea38c903fae50e0dcfd07daf99 Microsoft.AspNetCore.Antiforgery.dll `11.0.0-preview.3.26127.120` (__New__ ) n/a Microsoft.AspNetCore.Antiforgery.dll `11.0.0-preview.3.26124.102` (__Removed__) n/a |

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

@sebastienros

Contributor guide

Open the contributing guide

Research direction

The issue contains only a kestrel-header-symbols benchmark result for Kestrel on Linux and links to the ASP.NET Core benchmarks dashboard. Start by reviewing that scenario and its dependency changes; done would require a clearly defined performance task and a reproducible benchmark improvement, neither of which the issue currently specifies.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
performance
Issue type
Bug
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
20/100

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