[Perf] Linux/arm64: 19 Regressions on 5/19/2025 6:24:41 PM +00:00

[performanceautofiler]

Run Information

Name	Value
Architecture	arm64
OS	ubuntu 22.04
Queue	AmpereUbuntu
Baseline	a50dedf326cf31e2320cbc97d3ae721b26a1f2b2
Compare	d1f333e9b23ecd5c5bd0f6a81065cf1df355e8bd
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Text.Json.Tests.Perf_Strings

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
WriteStringsUtf8 - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	9.96 ms	10.86 ms	1.09	0.05	False
WriteStringsUtf8 - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	10.62 ms	11.76 ms	1.11	0.01	False
WriteStringsUtf8 - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	10.50 ms	11.65 ms	1.11	0.02	False
WriteStringsUtf8 - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	9.86 ms	11.03 ms	1.12	0.06	False
WriteStringsUtf16 - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	13.41 ms	14.63 ms	1.09	0.01	False
WriteStringsUtf16 - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	12.96 ms	13.94 ms	1.08	0.11	False
WriteStringsUtf16 - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	13.46 ms	14.48 ms	1.08	0.02	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Tests.Perf_Strings*'

System.Text.Json.Tests.Perf_Strings.WriteStringsUtf8(Formatted: False, SkipValidation: True, Escaped: OneEscaped)

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System.Text.Json.Tests.Perf_Strings.WriteStringsUtf8(Formatted: True, SkipValidation: False, Escaped: OneEscaped)

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System.Text.Json.Tests.Perf_Strings.WriteStringsUtf8(Formatted: True, SkipValidation: True, Escaped: OneEscaped)

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System.Text.Json.Tests.Perf_Strings.WriteStringsUtf8(Formatted: False, SkipValidation: False, Escaped: OneEscaped)

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System.Text.Json.Tests.Perf_Strings.WriteStringsUtf16(Formatted: True, SkipValidation: True, Escaped: OneEscaped)

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System.Text.Json.Tests.Perf_Strings.WriteStringsUtf16(Formatted: False, SkipValidation: False, Escaped: OneEscaped)

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System.Text.Json.Tests.Perf_Strings.WriteStringsUtf16(Formatted: True, SkipValidation: False, Escaped: OneEscaped)

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Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

---

Run Information

Name	Value
Architecture	arm64
OS	ubuntu 22.04
Queue	AmpereUbuntu
Baseline	a50dedf326cf31e2320cbc97d3ae721b26a1f2b2
Compare	d1f333e9b23ecd5c5bd0f6a81065cf1df355e8bd
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Buffers.Tests.RentReturnArrayPoolTests<Byte>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
SingleSerial - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	40.93 ns	47.26 ns	1.15	0.05	False
MultipleSerial - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	1.05 μs	1.44 μs	1.37	0.32	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Buffers.Tests.RentReturnArrayPoolTests<Byte>*'

System.Buffers.Tests.RentReturnArrayPoolTests<Byte>.SingleSerial(RentalSize: 4096, ManipulateArray: False, Async: False, UseSharedPool: False)

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System.Buffers.Tests.RentReturnArrayPoolTests<Byte>.MultipleSerial(RentalSize: 4096, ManipulateArray: False, Async: True, UseSharedPool: False)

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Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

---

Run Information

Name	Value
Architecture	arm64
OS	ubuntu 22.04
Queue	AmpereUbuntu
Baseline	a50dedf326cf31e2320cbc97d3ae721b26a1f2b2
Compare	d1f333e9b23ecd5c5bd0f6a81065cf1df355e8bd
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Globalization.Tests.StringEquality

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
Compare_DifferentFirstChar - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	9.02 ns	14.65 ns	1.62	0.23	False
Compare_DifferentFirstChar - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	7.29 ns	13.26 ns	1.82	0.21	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Globalization.Tests.StringEquality*'

System.Globalization.Tests.StringEquality.Compare_DifferentFirstChar(Count: 1024, Options: (en-US, Ordinal))

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System.Globalization.Tests.StringEquality.Compare_DifferentFirstChar(Count: 1024, Options: (en-US, OrdinalIgnoreCase))

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Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

---

Run Information

Name	Value
Architecture	arm64
OS	ubuntu 22.04
Queue	AmpereUbuntu
Baseline	a50dedf326cf31e2320cbc97d3ae721b26a1f2b2
Compare	d1f333e9b23ecd5c5bd0f6a81065cf1df355e8bd
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Text.Json.Document.Tests.Perf_ParseThenWrite

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
ParseThenWrite - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	2.28 μs	2.67 μs	1.17	0.02	False
ParseThenWrite - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	1.98 ms	2.39 ms	1.21	0.60	False
ParseThenWrite - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	11.35 μs	12.63 μs	1.11	0.01	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Document.Tests.Perf_ParseThenWrite*'

System.Text.Json.Document.Tests.Perf_ParseThenWrite.ParseThenWrite(IsDataIndented: True, TestCase: Json400B)

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System.Text.Json.Document.Tests.Perf_ParseThenWrite.ParseThenWrite(IsDataIndented: True, TestCase: Json400KB)

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System.Text.Json.Document.Tests.Perf_ParseThenWrite.ParseThenWrite(IsDataIndented: False, TestCase: DeepTree)

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Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

---

Run Information

Name	Value
Architecture	arm64
OS	ubuntu 22.04
Queue	AmpereUbuntu
Baseline	a50dedf326cf31e2320cbc97d3ae721b26a1f2b2
Compare	d1f333e9b23ecd5c5bd0f6a81065cf1df355e8bd
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Text.Json.Tests.Perf_Deep

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
WriteDeepUtf8 - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	4.50 ms	4.85 ms	1.08	0.03	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Tests.Perf_Deep*'

System.Text.Json.Tests.Perf_Deep.WriteDeepUtf8(Formatted: False, SkipValidation: True)

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Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

---

Run Information

Name	Value
Architecture	arm64
OS	ubuntu 22.04
Queue	AmpereUbuntu
Baseline	a50dedf326cf31e2320cbc97d3ae721b26a1f2b2
Compare	d1f333e9b23ecd5c5bd0f6a81065cf1df355e8bd
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Buffers.Tests.RentReturnArrayPoolTests<Object>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
MultipleSerial - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	396.05 ns	455.58 ns	1.15	0.02	False
SingleSerial - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	42.05 ns	49.13 ns	1.17	0.04	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Buffers.Tests.RentReturnArrayPoolTests<Object>*'

System.Buffers.Tests.RentReturnArrayPoolTests<Object>.MultipleSerial(RentalSize: 4096, ManipulateArray: False, Async: False, UseSharedPool: False)

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System.Buffers.Tests.RentReturnArrayPoolTests<Object>.SingleSerial(RentalSize: 4096, ManipulateArray: False, Async: False, UseSharedPool: False)

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JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

---

Run Information

Name	Value
Architecture	arm64
OS	ubuntu 22.04
Queue	AmpereUbuntu
Baseline	a50dedf326cf31e2320cbc97d3ae721b26a1f2b2
Compare	d1f333e9b23ecd5c5bd0f6a81065cf1df355e8bd
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Buffers.Tests.NonStandardArrayPoolTests<Byte>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
RentNoReturn - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	37.91 ns	52.94 ns	1.40	0.01	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Buffers.Tests.NonStandardArrayPoolTests<Byte>*'

System.Buffers.Tests.NonStandardArrayPoolTests<Byte>.RentNoReturn(RentalSize: 64, UseSharedPool: False)

ETL Files

Histogram

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Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

---

Run Information

Name	Value
Architecture	arm64
OS	ubuntu 22.04
Queue	AmpereUbuntu
Baseline	a50dedf326cf31e2320cbc97d3ae721b26a1f2b2
Compare	d1f333e9b23ecd5c5bd0f6a81065cf1df355e8bd
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Regressions in System.Buffers.Tests.NonStandardArrayPoolTests<Object>

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio
RentNoReturn - Duration of single invocation 📝 - Benchmark Source ADX - Test Multi Config Graph	65.07 ns	77.66 ns	1.19	0.01	False

Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Buffers.Tests.NonStandardArrayPoolTests<Object>*'

System.Buffers.Tests.NonStandardArrayPoolTests<Object>.RentNoReturn(RentalSize: 64, UseSharedPool: False)

ETL Files

Histogram

JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

[LoopedBard3]

Likely caused by #115119 from range: d94ebe0...3e6d25a.

Related Regressions:

• [Perf] Windows/arm64: 1 Regression on 5/19/2025 6:24:41 PM +00:00 perf-autofiling-issues#55949
• [Perf] Windows/x64: 37 Regressions on 5/19/2025 4:32:47 PM +00:00 perf-autofiling-issues#56199
• [Perf] Windows/x64: 25 Regressions on 5/19/2025 4:32:47 PM +00:00 perf-autofiling-issues#56161
• [Perf] Linux/x64: 22 Regressions on 5/19/2025 4:32:47 PM +00:00 perf-autofiling-issues#56208
• [Perf] Linux/x64: 20 Regressions on 5/19/2025 4:32:47 PM +00:00 perf-autofiling-issues#56153
• [Perf] Linux/x64: 1 Regression on 5/19/2025 12:29:04 PM +00:00 perf-autofiling-issues#56152

Improvements:

• [Perf] Linux/arm64: 65 Improvements on 5/19/2025 6:24:41 PM +00:00 perf-autofiling-issues#55996
• [Perf] Windows/x64: 124 Improvements on 5/19/2025 4:32:47 PM +00:00 perf-autofiling-issues#56248
• [Perf] Linux/x64: 100 Improvements on 5/19/2025 4:32:47 PM +00:00 perf-autofiling-issues#56243
• [Perf] Windows/x64: 99 Improvements on 5/19/2025 4:32:47 PM +00:00 perf-autofiling-issues#56183
• [Perf] Linux/x64: 63 Improvements on 5/19/2025 4:32:47 PM +00:00 perf-autofiling-issues#56171
• [Perf] Windows/x64: 7 Improvements on 5/19/2025 8:58:33 PM +00:00 perf-autofiling-issues#56249
• [Perf] Linux/x64: 2 Improvements on 5/19/2025 8:58:33 PM +00:00 perf-autofiling-issues#56172
• [Perf] Linux/x64: 3 Improvements on 5/19/2025 12:29:04 PM +00:00 perf-autofiling-issues#56242
• [Perf] Linux/x64: 3 Improvements on 5/19/2025 2:55:33 AM +00:00 perf-autofiling-issues#56170
• [Perf] Linux/x64: 2 Improvements on 5/19/2025 1:28:45 AM +00:00 perf-autofiling-issues#56169