Benchmarks for dotnet/runtime#125781 (for @EgorBo)

[EgorBot]

Processing benchmark request from issue dotnet/runtime#125781.

Targets: macos15_helix_arm64, ubuntu24_azure_cobalt100
Commits: 133f6a80839ace9578094ed356a9cd70988427b6;133f6a80839ace9578094ed356a9cd70988427b6~1

• macos15_helix_arm64: live logs
• ubuntu24_azure_cobalt100: live logs

Results will be posted here once they are ready.

[EgorBot]

Results for macos15_helix_arm64

@EgorBo

BenchmarkDotNet v0.15.8, macOS Sequoia 15.4.1 (24E263) [Darwin 24.4.0]
Apple M4, 1 CPU, 10 logical and 10 physical cores
.NET SDK 11.0.100-preview.3.26168.109
  [Host]     : .NET 10.0.5 (10.0.5, 10.0.526.15411), Arm64 RyuJIT armv8.0-a

Method	Toolchain	arguments	Mean	Error	Ratio
EncodeUtf16	133f6a80	Url,&(...)et,16 [34]	45.07 ns	0.141 ns	1.00
EncodeUtf16	133f6a80~1	Url,&(...)et,16 [34]	27.84 ns	0.030 ns	0.62

BDN profiler traces (speedscope)

• System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf16(arguments_ Url,&lorem ipsum=dolor sit amet,16)-_133f6a80_corerun-20260319-153109
• System.Text.Encodings.Web.Tests.Perf_Encoders.EncodeUtf16(arguments_ Url,&lorem ipsum=dolor sit amet,16)-_133f6a80~1_corerun-20260319-153131

Full logs

[EgorBot]

Results for ubuntu24_azure_cobalt100

@EgorBo

BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
Neoverse-N2, 8 physical cores
.NET SDK 11.0.100-preview.3.26168.109
  [Host]     : .NET 10.0.5 (10.0.5, 10.0.526.15411), Arm64 RyuJIT armv8.0-a

Method	Toolchain	arguments	Mean	Error	Ratio
EncodeUtf16	133f6a80	Url,&(...)et,16 [34]	87.52 ns	0.018 ns	1.00
EncodeUtf16	133f6a80~1	Url,&(...)et,16 [34]	55.25 ns	0.056 ns	0.63

Profiling artifacts

System.Text.Encodings.Web.Tests.Perf.Encoders.EncodeUtf16:

	133f6a80839ace9578094ed356a9cd70988427b6	133f6a80839ace9578094ed356a9cd70988427b6~1
flamegraph	link	link
functions	link	link
asm	link	link
stats	link	link
speedscope	link	link

Full logs