dotnet / dotnet/aspnetcore

Perf improvement: kestrel-header-symbols, mTls-handshakes-kestrel, tls-handshakes-kestrel

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area-perf perf-improvement
Dominant language
C#
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Avg merge
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Merged PRs (30d)
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Description

| Scenario | Environment | Date | Old RPS | New RPS | Change | Deviation | StDev | Dependencies |
| -------- | ----------- | ---- | ------- | ------- | ------ | --------- | ----- | ------------ |
| kestrel-header-symbols | Kestrel Linux: Invalid Header 14- Trends cobalt-hosted-lin-28 | 08/21/2026 09:36:40 | 5,067 | 5,876 | 0.00 % (809) :thumbsup: | 4.38 σ | 184.50 | Changes NameVersionDiff |
| mTls-handshakes-kestrel | Kestrel Linux: mTLS Handshakes 14- Trends cobalt-hosted-lin-28 | 08/21/2026 09:33:37 | 2,943 | 3,822 | 0.00 % (879) :thumbsup: | 8.31 σ | 105.79 | Changes NameVersionDiff |
| tls-handshakes-kestrel | Kestrel Linux: TLS Handshakes 14- Trends cobalt-hosted-lin-28 | 08/21/2026 09:31:46 | 3,796 | 4,408 | 0.00 % (612) :thumbsup: | 3.23 σ | 189.75 | Changes NameVersionDiff |

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

@sebastienros

Contributor guide

Open the contributing guide

Research direction

The report names the Kestrel Linux scenarios kestrel-header-symbols, mTls-handshakes-kestrel, and tls-handshakes-kestrel, but no source files, tests, or entry points. Start with the linked PowerBI benchmark dashboard and the benchmark definitions for these scenarios; the issue needs a requested change and measurable acceptance criteria before completion can be determined.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
backend, performance
Issue type
Refactor
Difficulty
5/5
Estimated time
Over a week
Activity status
Active
Clarity
Needs clarification
Newbie friendliness
25/100

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