Perf improvement: httpsys-hostheader-mismatch, json, json

| Scenario | Environment | Date | Old RPS | New RPS | Change | Deviation | StDev | Dependencies |
| -------- | ----------- | ---- | ------- | ------- | ------ | --------- | ----- | ------------ |
| httpsys-hostheader-mismatch | HttpSys Windows: Host Header Mismatch 6- Trends Gold Win | 12/18/2025 12:54:02 | 12,035 | 12,466 | 3.58 % (431) :thumbsup: | 6.84 σ | 63.00 | Changes NameVersionDiff |
| json | Json Platform Inline 13- Trends Cobalt Hosted Lin Server | 12/18/2025 21:00:00 | 326,767 | 953,970 | 191.94 % (627,203) :thumbsup: | 5.77 σ | 108,713.66 | Changes NameVersionDiff PlatformBenchmarks.dll `1.0.0` -> `1.0.0` https://github.com/aspnet/Benchmarks/compare/5643540884666d2fcf76e2b46df0dfef9929f0f2...bc8e7cf5a314cf9565e1762207ff08a67f602211 Npgsql.dll `9.0.3` -> `9.0.4` https://github.com/npgsql/npgsql/compare/97dc1739c6cf5890acf450f20f04e64c14c7ffd5...3b6c74c505c4dbc68a39b05e7440153b3bf511f4 |
| json | Json 13- Trends Cobalt Hosted Lin Server | 12/18/2025 21:11:39 | 398,656 | 861,131 | 116.01 % (462,475) :thumbsup: | 3.88 σ | 119,170.48 | Changes NameVersionDiff xunit.assert.dll `2.4.2` -> `2.9.2` /compare/f110e5bee5...82543a6df6 SQLitePCLRaw.batteries_v2.dll `2.1.10` -> `2.1.11` n/a Microsoft.DotNet.RemoteExecutor.dll `9.0.0-beta.24516.2` -> `10.0.0-beta.25531.102` https://github.com/dotnet/arcade/compare/3c393bbd85ae16ddddba20d0b75035b0c6f1a52d...ba86126261026d26f7c30cd3434680d3965a88cf Microsoft.AspNetCore.InternalTesting.dll `9.0.0-rtm.24529.3` -> `10.0.0-rtm.25531.102` https://github.com/dotnet/aspnetcore/compare/af22effae4069a5dfb9b0735859de48820104f5b...ba86126261026d26f7c30cd3434680d3965a88cf Benchmarks.dll `1.0.0` -> `1.0.0` https://github.com/aspnet/Benchmarks/compare/5643540884666d2fcf76e2b46df0dfef9929f0f2...bc8e7cf5a314cf9565e1762207ff08a67f602211 Npgsql.EntityFrameworkCore.PostgreSQL.dll `9.0.4` -> `10.0.0` https://github.com/npgsql/efcore.pg/compare/fd2380957bee5cd86f336466af36b08c0163f1a5...7624373747b28d693b45cea8174471d4b312e2a5 Npgsql.dll `9.0.3` -> `10.0.0` https://github.com/npgsql/npgsql/compare/97dc1739c6cf5890acf450f20f04e64c14c7ffd5...a18021849f244716d3b68eefd705677f131f9ace Microsoft.AspNetCore.Antiforgery.dll `10.0.0-rtm.25513.102` (__New__ ) n/a Microsoft.Extensions.Configuration.Binder.dll `10.0.0` (__New__ ) n/a Microsoft.Data.Sqlite.dll `10.0.1` (__New__ ) n/a Microsoft.AspNetCore.Antiforgery.dll `10.0.0-rtm.25513.102` (__Removed__) n/a Microsoft.Data.Sqlite.dll `9.0.0-rc.2.24474.1` (__Removed__) n/a Microsoft.Extensions.DependencyModel.dll `9.0.0-rc.2.24473.5` (__Removed__) n/a Microsoft.EntityFrameworkCore.Abstractions.dll `9.0.1` (__Removed__) n/a System.ServiceProcess.ServiceController.dll `9.0.0` (__Removed__) n/a |

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@sebastienros