[Perf] Windows/arm64: 10 Regressions on 2/20/2023 2:00:07 PM


### Run Information

Architecture | arm64
-- | --
OS | Windows 10.0.19041
Baseline | [fccf04f8d7c97448e6707de933781ee9df0896a8](https://github.com/dotnet/runtime/commit/fccf04f8d7c97448e6707de933781ee9df0896a8)
Compare | [ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec](https://github.com/dotnet/runtime/commit/ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec)
Diff | [Diff](https://github.com/dotnet/runtime/compare/fccf04f8d7c97448e6707de933781ee9df0896a8...ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec)


### Regressions in System.Formats.Cbor.Tests.Perf_CborWriter

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[WriteCoseKey - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.Formats.Cbor.Tests.Perf_CborWriter.WriteCoseKey(publicKey%3a%20ECDSA_P521).html>) | 712.21 ns | 866.66 ns | 1.22 | 0.27 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_23_2023/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Formats.Cbor.Tests.Perf_CborWriter_1.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_23_2023/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Formats.Cbor.Tests.Perf_CborWriter.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-46ef3f46-a6fe-4e28-9814-e1a79251f16998f5191b8c749f0ae/e1ab69f4-5c4e-428a-b7ef-0f31c2d5ae26.zip?sv=2021-08-06&se=2023-03-22T02%3A19%3A45Z&sr=c&sp=rl&sig=b%2FrinnieqT2P6eQCwYvl4%2F%2BBg%2B35tTaVcKlXgua4mX4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-1bedd279-71b8-45c8-aa4e-731debc9af508febb989e074e38b8/9b52d26f-430b-4560-bafe-d90b3d467ba1.zip?sv=2021-08-06&se=2023-03-22T21%3A04%3A06Z&sr=c&sp=rl&sig=B5U0JPpOd9z%2B6EcpFq38STcwC%2F7tXA%2FTFzSdmzoGmYo%3D>)

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Formats.Cbor.Tests.Perf_CborWriter*'
```

<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-46ef3f46-a6fe-4e28-9814-e1a79251f16998f5191b8c749f0ae/e1ab69f4-5c4e-428a-b7ef-0f31c2d5ae26.zip?sv=2021-08-06&se=2023-03-22T02%3A19%3A45Z&sr=c&sp=rl&sig=b%2FrinnieqT2P6eQCwYvl4%2F%2BBg%2B35tTaVcKlXgua4mX4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-1bedd279-71b8-45c8-aa4e-731debc9af508febb989e074e38b8/9b52d26f-430b-4560-bafe-d90b3d467ba1.zip?sv=2021-08-06&se=2023-03-22T21%3A04%3A06Z&sr=c&sp=rl&sig=B5U0JPpOd9z%2B6EcpFq38STcwC%2F7tXA%2FTFzSdmzoGmYo%3D>)
### Histogram

#### System.Formats.Cbor.Tests.Perf_CborWriter.WriteCoseKey(publicKey: ECDSA_P521)

```log

```
### Description of detection logic
```IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 866.6575576747906 > 751.2458460625311.
IsChangePoint: Marked as a change because one of 1/9/2023 6:56:09 PM, 1/10/2023 12:53:48 PM, 2/20/2023 3:29:46 AM, 2/21/2023 5:46:41 AM falls between 2/12/2023 2:35:10 PM and 2/21/2023 5:46:41 AM.
IsRegressionStdDev: Marked as regression because -19.710595238559318 (T) = (0 -868.0096632329506) / Math.Sqrt((1769.7293474973467 / (39)) + (3.6563788808144353 / (2))) is less than -2.0226909200346674 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (39) + (2) - 2, .025) and -0.18485861272148643 = (732.5850138686425 - 868.0096632329506) / 732.5850138686425 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>

### Run Information

Architecture | arm64
-- | --
OS | Windows 10.0.19041
Baseline | [fccf04f8d7c97448e6707de933781ee9df0896a8](https://github.com/dotnet/runtime/commit/fccf04f8d7c97448e6707de933781ee9df0896a8)
Compare | [ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec](https://github.com/dotnet/runtime/commit/ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec)
Diff | [Diff](https://github.com/dotnet/runtime/compare/fccf04f8d7c97448e6707de933781ee9df0896a8...ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec)


### Regressions in System.Text.Json.Serialization.Tests.ReadJson&lt;ImmutableSortedDictionary&lt;String, String&gt;&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[DeserializeFromStream - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.Text.Json.Serialization.Tests.ReadJson(ImmutableSortedDictionary(String%2c%20String)).DeserializeFromStream(Mode%3a%20Reflection).html>) | 90.59 μs | 101.39 μs | 1.12 | 0.13 | False | | |
[DeserializeFromUtf8Bytes - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.Text.Json.Serialization.Tests.ReadJson(ImmutableSortedDictionary(String%2c%20String)).DeserializeFromUtf8Bytes(Mode%3a%20Reflection).html>) | 89.04 μs | 101.24 μs | 1.14 | 0.16 | False | | |
[DeserializeFromReader - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.Text.Json.Serialization.Tests.ReadJson(ImmutableSortedDictionary(String%2c%20String)).DeserializeFromReader(Mode%3a%20Reflection).html>) | 94.47 μs | 113.03 μs | 1.20 | 0.21 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_23_2023/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Text.Json.Serialization.Tests.ReadJson(ImmutableSortedDictionary(String,%20String))_1.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_23_2023/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Text.Json.Serialization.Tests.ReadJson(ImmutableSortedDictionary(String,%20String))_2.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_23_2023/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Text.Json.Serialization.Tests.ReadJson(ImmutableSortedDictionary(String,%20String))_3.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_23_2023/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Text.Json.Serialization.Tests.ReadJson(ImmutableSortedDictionary(String,%20String)).html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-46ef3f46-a6fe-4e28-9814-e1a79251f16998f5191b8c749f0ae/e1ab69f4-5c4e-428a-b7ef-0f31c2d5ae26.zip?sv=2021-08-06&se=2023-03-22T02%3A19%3A45Z&sr=c&sp=rl&sig=b%2FrinnieqT2P6eQCwYvl4%2F%2BBg%2B35tTaVcKlXgua4mX4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-1bedd279-71b8-45c8-aa4e-731debc9af508febb989e074e38b8/9b52d26f-430b-4560-bafe-d90b3d467ba1.zip?sv=2021-08-06&se=2023-03-22T21%3A04%3A06Z&sr=c&sp=rl&sig=B5U0JPpOd9z%2B6EcpFq38STcwC%2F7tXA%2FTFzSdmzoGmYo%3D>)

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Serialization.Tests.ReadJson&lt;ImmutableSortedDictionary&lt;String, String&gt;&gt;*'
```

<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-46ef3f46-a6fe-4e28-9814-e1a79251f16998f5191b8c749f0ae/e1ab69f4-5c4e-428a-b7ef-0f31c2d5ae26.zip?sv=2021-08-06&se=2023-03-22T02%3A19%3A45Z&sr=c&sp=rl&sig=b%2FrinnieqT2P6eQCwYvl4%2F%2BBg%2B35tTaVcKlXgua4mX4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-1bedd279-71b8-45c8-aa4e-731debc9af508febb989e074e38b8/9b52d26f-430b-4560-bafe-d90b3d467ba1.zip?sv=2021-08-06&se=2023-03-22T21%3A04%3A06Z&sr=c&sp=rl&sig=B5U0JPpOd9z%2B6EcpFq38STcwC%2F7tXA%2FTFzSdmzoGmYo%3D>)
### Histogram

#### System.Text.Json.Serialization.Tests.ReadJson&lt;ImmutableSortedDictionary&lt;String, String&gt;&gt;.DeserializeFromStream(Mode: Reflection)

```log

```
### Description of detection logic
```IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 101.3856449656288 > 95.45414714996764.
IsChangePoint: Marked as a change because one of 2/8/2023 4:01:29 AM, 2/20/2023 3:29:46 AM, 2/21/2023 5:46:41 AM falls between 2/12/2023 2:35:10 PM and 2/21/2023 5:46:41 AM.
IsRegressionStdDev: Marked as regression because -25.340132813672906 (T) = (0 -101754.1992648918) / Math.Sqrt((1087423.0545155974 / (39)) + (271664.543010471 / (2))) is less than -2.0226909200346674 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (39) + (2) - 2, .025) and -0.11205376477708384 = (91501.1508326568 - 101754.1992648918) / 91501.1508326568 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Serialization.Tests.ReadJson&lt;ImmutableSortedDictionary&lt;String, String&gt;&gt;.DeserializeFromUtf8Bytes(Mode: Reflection)

```log

```
### Description of detection logic
```IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 101.23746505376346 > 93.37042737926139.
IsChangePoint: Marked as a change because one of 2/19/2023 7:20:18 PM, 2/21/2023 5:46:41 AM falls between 2/12/2023 2:35:10 PM and 2/21/2023 5:46:41 AM.
IsRegressionStdDev: Marked as regression because -12.153531063201832 (T) = (0 -99884.95779234989) / Math.Sqrt((15000879.162828723 / (37)) + (822374.8967735283 / (4))) is less than -2.0226909200346674 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (37) + (4) - 2, .025) and -0.10510802022217312 = (90384.7913186521 - 99884.95779234989) / 90384.7913186521 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```#### System.Text.Json.Serialization.Tests.ReadJson&lt;ImmutableSortedDictionary&lt;String, String&gt;&gt;.DeserializeFromReader(Mode: Reflection)

```log

```
### Description of detection logic
```IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 113.02799883540375 > 100.41650462163972.
IsChangePoint: Marked as a change because one of 2/8/2023 10:48:55 AM, 2/20/2023 3:29:46 AM, 2/21/2023 5:46:41 AM falls between 2/12/2023 2:35:10 PM and 2/21/2023 5:46:41 AM.
IsRegressionStdDev: Marked as regression because -3.2632811809456417 (T) = (0 -109182.67099106096) / Math.Sqrt((9942925.094673157 / (39)) + (29573092.46095585 / (2))) is less than -2.0226909200346674 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (39) + (2) - 2, .025) and -0.13111521778295296 = (96526.56888929928 - 109182.67099106096) / 96526.56888929928 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>



### Run Information

Architecture | arm64
-- | --
OS | Windows 10.0.19041
Baseline | [fccf04f8d7c97448e6707de933781ee9df0896a8](https://github.com/dotnet/runtime/commit/fccf04f8d7c97448e6707de933781ee9df0896a8)
Compare | [ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec](https://github.com/dotnet/runtime/commit/ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec)
Diff | [Diff](https://github.com/dotnet/runtime/compare/fccf04f8d7c97448e6707de933781ee9df0896a8...ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec)


### Regressions in System.Globalization.Tests.StringEquality

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Compare_Same_Upper - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.Globalization.Tests.StringEquality.Compare_Same_Upper(Count%3a%201024%2c%20Options%3a%20(en-US%2c%20OrdinalIgnoreCase)).html>) | 2.43 μs | 2.59 μs | 1.07 | 0.01 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_23_2023/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Globalization.Tests.StringEquality_1.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_23_2023/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Globalization.Tests.StringEquality.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-46ef3f46-a6fe-4e28-9814-e1a79251f16998f5191b8c749f0ae/e1ab69f4-5c4e-428a-b7ef-0f31c2d5ae26.zip?sv=2021-08-06&se=2023-03-22T02%3A19%3A45Z&sr=c&sp=rl&sig=b%2FrinnieqT2P6eQCwYvl4%2F%2BBg%2B35tTaVcKlXgua4mX4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-1bedd279-71b8-45c8-aa4e-731debc9af508febb989e074e38b8/9b52d26f-430b-4560-bafe-d90b3d467ba1.zip?sv=2021-08-06&se=2023-03-22T21%3A04%3A06Z&sr=c&sp=rl&sig=B5U0JPpOd9z%2B6EcpFq38STcwC%2F7tXA%2FTFzSdmzoGmYo%3D>)

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Globalization.Tests.StringEquality*'
```

<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-46ef3f46-a6fe-4e28-9814-e1a79251f16998f5191b8c749f0ae/e1ab69f4-5c4e-428a-b7ef-0f31c2d5ae26.zip?sv=2021-08-06&se=2023-03-22T02%3A19%3A45Z&sr=c&sp=rl&sig=b%2FrinnieqT2P6eQCwYvl4%2F%2BBg%2B35tTaVcKlXgua4mX4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-1bedd279-71b8-45c8-aa4e-731debc9af508febb989e074e38b8/9b52d26f-430b-4560-bafe-d90b3d467ba1.zip?sv=2021-08-06&se=2023-03-22T21%3A04%3A06Z&sr=c&sp=rl&sig=B5U0JPpOd9z%2B6EcpFq38STcwC%2F7tXA%2FTFzSdmzoGmYo%3D>)
### Histogram

#### System.Globalization.Tests.StringEquality.Compare_Same_Upper(Count: 1024, Options: (en-US, OrdinalIgnoreCase))

```log

```
### Description of detection logic
```IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 2.5904708987051657 > 2.5580862230914097.
IsChangePoint: Marked as a change because one of 11/18/2022 7:31:41 AM, 12/20/2022 4:39:07 PM, 12/21/2022 10:31:08 AM, 1/5/2023 2:25:12 AM, 1/31/2023 1:54:46 PM, 2/20/2023 3:29:46 AM, 2/21/2023 5:46:41 AM falls between 2/12/2023 2:35:10 PM and 2/21/2023 5:46:41 AM.
IsRegressionStdDev: Marked as regression because -20.174213076520786 (T) = (0 -2599.0267950233247) / Math.Sqrt((228.7380646440366 / (39)) + (146.40672361416765 / (2))) is less than -2.0226909200346674 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (39) + (2) - 2, .025) and -0.07413921897261198 = (2419.636811612959 - 2599.0267950233247) / 2419.636811612959 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>



### Run Information

Architecture | arm64
-- | --
OS | Windows 10.0.19041
Baseline | [fccf04f8d7c97448e6707de933781ee9df0896a8](https://github.com/dotnet/runtime/commit/fccf04f8d7c97448e6707de933781ee9df0896a8)
Compare | [ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec](https://github.com/dotnet/runtime/commit/ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec)
Diff | [Diff](https://github.com/dotnet/runtime/compare/fccf04f8d7c97448e6707de933781ee9df0896a8...ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec)


### Regressions in System.Text.RegularExpressions.Tests.Perf_Regex_Common

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Backtracking - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.Text.RegularExpressions.Tests.Perf_Regex_Common.Backtracking(Options%3a%20IgnoreCase%2c%20Compiled).html>) | 178.03 ns | 194.25 ns | 1.09 | 0.19 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_23_2023/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Common_1.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_23_2023/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Text.RegularExpressions.Tests.Perf_Regex_Common.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-46ef3f46-a6fe-4e28-9814-e1a79251f16998f5191b8c749f0ae/e1ab69f4-5c4e-428a-b7ef-0f31c2d5ae26.zip?sv=2021-08-06&se=2023-03-22T02%3A19%3A45Z&sr=c&sp=rl&sig=b%2FrinnieqT2P6eQCwYvl4%2F%2BBg%2B35tTaVcKlXgua4mX4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-1bedd279-71b8-45c8-aa4e-731debc9af508febb989e074e38b8/9b52d26f-430b-4560-bafe-d90b3d467ba1.zip?sv=2021-08-06&se=2023-03-22T21%3A04%3A06Z&sr=c&sp=rl&sig=B5U0JPpOd9z%2B6EcpFq38STcwC%2F7tXA%2FTFzSdmzoGmYo%3D>)

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.RegularExpressions.Tests.Perf_Regex_Common*'
```

<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-46ef3f46-a6fe-4e28-9814-e1a79251f16998f5191b8c749f0ae/e1ab69f4-5c4e-428a-b7ef-0f31c2d5ae26.zip?sv=2021-08-06&se=2023-03-22T02%3A19%3A45Z&sr=c&sp=rl&sig=b%2FrinnieqT2P6eQCwYvl4%2F%2BBg%2B35tTaVcKlXgua4mX4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-1bedd279-71b8-45c8-aa4e-731debc9af508febb989e074e38b8/9b52d26f-430b-4560-bafe-d90b3d467ba1.zip?sv=2021-08-06&se=2023-03-22T21%3A04%3A06Z&sr=c&sp=rl&sig=B5U0JPpOd9z%2B6EcpFq38STcwC%2F7tXA%2FTFzSdmzoGmYo%3D>)
### Histogram

#### System.Text.RegularExpressions.Tests.Perf_Regex_Common.Backtracking(Options: IgnoreCase, Compiled)

```log

```
### Description of detection logic
```IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 194.25197285353534 > 184.69072579940084.
IsChangePoint: Marked as a change because one of 11/9/2022 4:06:23 PM, 12/5/2022 9:44:53 PM, 1/5/2023 10:03:03 PM, 1/13/2023 8:11:05 PM, 2/20/2023 3:29:46 AM, 2/21/2023 5:46:41 AM falls between 2/12/2023 2:35:10 PM and 2/21/2023 5:46:41 AM.
IsRegressionStdDev: Marked as regression because -2.6453488171814055 (T) = (0 -203.78073010728673) / Math.Sqrt((34.47304444177677 / (39)) + (181.59442960183907 / (2))) is less than -2.0226909200346674 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (39) + (2) - 2, .025) and -0.14193937206096194 = (178.4514441773779 - 203.78073010728673) / 178.4514441773779 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>



### Run Information

Architecture | arm64
-- | --
OS | Windows 10.0.19041
Baseline | [fccf04f8d7c97448e6707de933781ee9df0896a8](https://github.com/dotnet/runtime/commit/fccf04f8d7c97448e6707de933781ee9df0896a8)
Compare | [ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec](https://github.com/dotnet/runtime/commit/ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec)
Diff | [Diff](https://github.com/dotnet/runtime/compare/fccf04f8d7c97448e6707de933781ee9df0896a8...ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec)


### Regressions in System.Text.Json.Serialization.Tests.ReadJson&lt;Int32&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[DeserializeFromReader - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.Text.Json.Serialization.Tests.ReadJson(Int32).DeserializeFromReader(Mode%3a%20Reflection).html>) | 204.01 ns | 254.77 ns | 1.25 | 0.27 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_23_2023/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Text.Json.Serialization.Tests.ReadJson(Int32)_1.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_23_2023/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Text.Json.Serialization.Tests.ReadJson(Int32).html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-46ef3f46-a6fe-4e28-9814-e1a79251f16998f5191b8c749f0ae/e1ab69f4-5c4e-428a-b7ef-0f31c2d5ae26.zip?sv=2021-08-06&se=2023-03-22T02%3A19%3A45Z&sr=c&sp=rl&sig=b%2FrinnieqT2P6eQCwYvl4%2F%2BBg%2B35tTaVcKlXgua4mX4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-1bedd279-71b8-45c8-aa4e-731debc9af508febb989e074e38b8/9b52d26f-430b-4560-bafe-d90b3d467ba1.zip?sv=2021-08-06&se=2023-03-22T21%3A04%3A06Z&sr=c&sp=rl&sig=B5U0JPpOd9z%2B6EcpFq38STcwC%2F7tXA%2FTFzSdmzoGmYo%3D>)

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Serialization.Tests.ReadJson&lt;Int32&gt;*'
```

<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-46ef3f46-a6fe-4e28-9814-e1a79251f16998f5191b8c749f0ae/e1ab69f4-5c4e-428a-b7ef-0f31c2d5ae26.zip?sv=2021-08-06&se=2023-03-22T02%3A19%3A45Z&sr=c&sp=rl&sig=b%2FrinnieqT2P6eQCwYvl4%2F%2BBg%2B35tTaVcKlXgua4mX4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-1bedd279-71b8-45c8-aa4e-731debc9af508febb989e074e38b8/9b52d26f-430b-4560-bafe-d90b3d467ba1.zip?sv=2021-08-06&se=2023-03-22T21%3A04%3A06Z&sr=c&sp=rl&sig=B5U0JPpOd9z%2B6EcpFq38STcwC%2F7tXA%2FTFzSdmzoGmYo%3D>)
### Histogram

#### System.Text.Json.Serialization.Tests.ReadJson&lt;Int32&gt;.DeserializeFromReader(Mode: Reflection)

```log

```
### Description of detection logic
```IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 254.76851459642376 > 214.15736459497546.
IsChangePoint: Marked as a change because one of 12/14/2022 7:00:38 AM, 12/20/2022 4:39:07 PM, 1/10/2023 12:53:48 PM, 2/20/2023 3:29:46 AM, 2/21/2023 5:46:41 AM falls between 2/12/2023 2:35:10 PM and 2/21/2023 5:46:41 AM.
IsRegressionStdDev: Marked as regression because -22.96999442761261 (T) = (0 -254.78050147442104) / Math.Sqrt((162.87682885599105 / (39)) + (0.00028737048824303347 / (2))) is less than -2.0226909200346674 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (39) + (2) - 2, .025) and -0.22586068340850432 = (207.83805608807367 - 254.78050147442104) / 207.83805608807367 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>



### Run Information

Architecture | arm64
-- | --
OS | Windows 10.0.19041
Baseline | [fccf04f8d7c97448e6707de933781ee9df0896a8](https://github.com/dotnet/runtime/commit/fccf04f8d7c97448e6707de933781ee9df0896a8)
Compare | [ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec](https://github.com/dotnet/runtime/commit/ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec)
Diff | [Diff](https://github.com/dotnet/runtime/compare/fccf04f8d7c97448e6707de933781ee9df0896a8...ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec)


### Regressions in System.Text.Json.Serialization.Tests.WriteJson&lt;ClassRecord&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[SerializeObjectProperty - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.Text.Json.Serialization.Tests.WriteJson(ClassRecord).SerializeObjectProperty(Mode%3a%20SourceGen).html>) | 645.06 ns | 685.71 ns | 1.06 | 0.16 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_23_2023/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Text.Json.Serialization.Tests.WriteJson(ClassRecord)_1.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_23_2023/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Text.Json.Serialization.Tests.WriteJson(ClassRecord).html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-46ef3f46-a6fe-4e28-9814-e1a79251f16998f5191b8c749f0ae/e1ab69f4-5c4e-428a-b7ef-0f31c2d5ae26.zip?sv=2021-08-06&se=2023-03-22T02%3A19%3A45Z&sr=c&sp=rl&sig=b%2FrinnieqT2P6eQCwYvl4%2F%2BBg%2B35tTaVcKlXgua4mX4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-1bedd279-71b8-45c8-aa4e-731debc9af508febb989e074e38b8/9b52d26f-430b-4560-bafe-d90b3d467ba1.zip?sv=2021-08-06&se=2023-03-22T21%3A04%3A06Z&sr=c&sp=rl&sig=B5U0JPpOd9z%2B6EcpFq38STcwC%2F7tXA%2FTFzSdmzoGmYo%3D>)

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Serialization.Tests.WriteJson&lt;ClassRecord&gt;*'
```

<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-46ef3f46-a6fe-4e28-9814-e1a79251f16998f5191b8c749f0ae/e1ab69f4-5c4e-428a-b7ef-0f31c2d5ae26.zip?sv=2021-08-06&se=2023-03-22T02%3A19%3A45Z&sr=c&sp=rl&sig=b%2FrinnieqT2P6eQCwYvl4%2F%2BBg%2B35tTaVcKlXgua4mX4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-1bedd279-71b8-45c8-aa4e-731debc9af508febb989e074e38b8/9b52d26f-430b-4560-bafe-d90b3d467ba1.zip?sv=2021-08-06&se=2023-03-22T21%3A04%3A06Z&sr=c&sp=rl&sig=B5U0JPpOd9z%2B6EcpFq38STcwC%2F7tXA%2FTFzSdmzoGmYo%3D>)
### Histogram

#### System.Text.Json.Serialization.Tests.WriteJson&lt;ClassRecord&gt;.SerializeObjectProperty(Mode: SourceGen)

```log

```
### Description of detection logic
```IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 685.7057302247085 > 676.897017374289.
IsChangePoint: Marked as a change because one of 2/20/2023 3:29:46 AM, 2/21/2023 5:46:41 AM falls between 2/12/2023 2:35:10 PM and 2/21/2023 5:46:41 AM.
IsRegressionStdDev: Marked as regression because -9.753559438031802 (T) = (0 -688.5869370520086) / Math.Sqrt((212.33061066232167 / (39)) + (16.602705563361468 / (2))) is less than -2.0226909200346674 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (39) + (2) - 2, .025) and -0.055426332727297925 = (652.4253902900548 - 688.5869370520086) / 652.4253902900548 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>



### Run Information

Architecture | arm64
-- | --
OS | Windows 10.0.19041
Baseline | [fccf04f8d7c97448e6707de933781ee9df0896a8](https://github.com/dotnet/runtime/commit/fccf04f8d7c97448e6707de933781ee9df0896a8)
Compare | [ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec](https://github.com/dotnet/runtime/commit/ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec)
Diff | [Diff](https://github.com/dotnet/runtime/compare/fccf04f8d7c97448e6707de933781ee9df0896a8...ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec)


### Regressions in System.Linq.Tests.Perf_Enumerable

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[AppendPrepend - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.Linq.Tests.Perf_Enumerable.AppendPrepend(input%3a%20IEnumerable).html>) | 4.91 μs | 5.40 μs | 1.10 | 0.19 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_23_2023/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Linq.Tests.Perf_Enumerable_1.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_23_2023/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Linq.Tests.Perf_Enumerable.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-46ef3f46-a6fe-4e28-9814-e1a79251f16998f5191b8c749f0ae/e1ab69f4-5c4e-428a-b7ef-0f31c2d5ae26.zip?sv=2021-08-06&se=2023-03-22T02%3A19%3A45Z&sr=c&sp=rl&sig=b%2FrinnieqT2P6eQCwYvl4%2F%2BBg%2B35tTaVcKlXgua4mX4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-1bedd279-71b8-45c8-aa4e-731debc9af508febb989e074e38b8/9b52d26f-430b-4560-bafe-d90b3d467ba1.zip?sv=2021-08-06&se=2023-03-22T21%3A04%3A06Z&sr=c&sp=rl&sig=B5U0JPpOd9z%2B6EcpFq38STcwC%2F7tXA%2FTFzSdmzoGmYo%3D>)

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Linq.Tests.Perf_Enumerable*'
```

<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-46ef3f46-a6fe-4e28-9814-e1a79251f16998f5191b8c749f0ae/e1ab69f4-5c4e-428a-b7ef-0f31c2d5ae26.zip?sv=2021-08-06&se=2023-03-22T02%3A19%3A45Z&sr=c&sp=rl&sig=b%2FrinnieqT2P6eQCwYvl4%2F%2BBg%2B35tTaVcKlXgua4mX4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-1bedd279-71b8-45c8-aa4e-731debc9af508febb989e074e38b8/9b52d26f-430b-4560-bafe-d90b3d467ba1.zip?sv=2021-08-06&se=2023-03-22T21%3A04%3A06Z&sr=c&sp=rl&sig=B5U0JPpOd9z%2B6EcpFq38STcwC%2F7tXA%2FTFzSdmzoGmYo%3D>)
### Histogram

#### System.Linq.Tests.Perf_Enumerable.AppendPrepend(input: IEnumerable)

```log

```
### Description of detection logic
```IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 5.398595444211263 > 5.138729522417365.
IsChangePoint: Marked as a change because one of 11/2/2022 4:14:20 AM, 11/3/2022 10:37:34 AM, 2/20/2023 3:29:46 AM, 2/21/2023 5:46:41 AM falls between 2/12/2023 2:35:10 PM and 2/21/2023 5:46:41 AM.
IsRegressionStdDev: Marked as regression because -6.626781799937064 (T) = (0 -5335.299102542864) / Math.Sqrt((13392.666410228561 / (39)) + (8012.853737205236 / (2))) is less than -2.0226909200346674 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (39) + (2) - 2, .025) and -0.08922746480071551 = (4898.241437126273 - 5335.299102542864) / 4898.241437126273 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>



### Run Information

Architecture | arm64
-- | --
OS | Windows 10.0.19041
Baseline | [fccf04f8d7c97448e6707de933781ee9df0896a8](https://github.com/dotnet/runtime/commit/fccf04f8d7c97448e6707de933781ee9df0896a8)
Compare | [ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec](https://github.com/dotnet/runtime/commit/ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec)
Diff | [Diff](https://github.com/dotnet/runtime/compare/fccf04f8d7c97448e6707de933781ee9df0896a8...ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec)


### Regressions in System.Tests.Perf_Uri

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Ctor - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.Tests.Perf_Uri.Ctor(input%3a%20%22https%3a%2f%2fa.much.longer.domain.name%22).html>) | 255.76 ns | 270.35 ns | 1.06 | 0.02 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_23_2023/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Tests.Perf_Uri_1.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/02_23_2023/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Tests.Perf_Uri.html>)

### Repro
General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-46ef3f46-a6fe-4e28-9814-e1a79251f16998f5191b8c749f0ae/e1ab69f4-5c4e-428a-b7ef-0f31c2d5ae26.zip?sv=2021-08-06&se=2023-03-22T02%3A19%3A45Z&sr=c&sp=rl&sig=b%2FrinnieqT2P6eQCwYvl4%2F%2BBg%2B35tTaVcKlXgua4mX4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-1bedd279-71b8-45c8-aa4e-731debc9af508febb989e074e38b8/9b52d26f-430b-4560-bafe-d90b3d467ba1.zip?sv=2021-08-06&se=2023-03-22T21%3A04%3A06Z&sr=c&sp=rl&sig=B5U0JPpOd9z%2B6EcpFq38STcwC%2F7tXA%2FTFzSdmzoGmYo%3D>)

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_Uri*'
```

<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-46ef3f46-a6fe-4e28-9814-e1a79251f16998f5191b8c749f0ae/e1ab69f4-5c4e-428a-b7ef-0f31c2d5ae26.zip?sv=2021-08-06&se=2023-03-22T02%3A19%3A45Z&sr=c&sp=rl&sig=b%2FrinnieqT2P6eQCwYvl4%2F%2BBg%2B35tTaVcKlXgua4mX4%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-1bedd279-71b8-45c8-aa4e-731debc9af508febb989e074e38b8/9b52d26f-430b-4560-bafe-d90b3d467ba1.zip?sv=2021-08-06&se=2023-03-22T21%3A04%3A06Z&sr=c&sp=rl&sig=B5U0JPpOd9z%2B6EcpFq38STcwC%2F7tXA%2FTFzSdmzoGmYo%3D>)
### Histogram

#### System.Tests.Perf_Uri.Ctor(input: "https://a.much.longer.domain.name")

```log

```
### Description of detection logic
```IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsRegressionBase: Marked as regression because the compare was 5% greater than the baseline, and the value was not too small.
IsRegressionChecked: Marked as regression because the three check build points were 0.05 greater than the baseline.
IsRegressionWindowed: Marked as regression because 270.3484743411928 > 268.49801750527104.
IsChangePoint: Marked as a change because one of 1/17/2023 4:06:07 PM, 2/20/2023 3:29:46 AM, 2/21/2023 5:46:41 AM falls between 2/12/2023 2:35:10 PM and 2/21/2023 5:46:41 AM.
IsRegressionStdDev: Marked as regression because -29.041907426458568 (T) = (0 -270.8543594377742) / Math.Sqrt((0.35635366201389274 / (39)) + (0.5118394618862476 / (2))) is less than -2.0226909200346674 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (39) + (2) - 2, .025) and -0.05842789307060736 = (255.90251467390758 - 270.8543594377742) / 255.90251467390758 is less than -0.05.
IsImprovementBase: Marked as not an improvement because the compare was not 5% less than the baseline, or the value was too small.
IsChangeEdgeDetector: Marked not as a regression because Edge Detector said so.

```

### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>




Architecture	arm64
OS	Windows 10.0.19041
Baseline	fccf04f8d7c97448e6707de933781ee9df0896a8
Compare	ac7afb9ccb88b895eeb3264e38ab22d0c5d726ec
Diff	Diff

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
DeserializeFromStream - Duration of single invocation	90.59 μs	101.39 μs	1.12	0.13	False
DeserializeFromUtf8Bytes - Duration of single invocation	89.04 μs	101.24 μs	1.14	0.16	False
DeserializeFromReader - Duration of single invocation	94.47 μs	113.03 μs	1.20	0.21	False

Uh oh!

[Perf] Windows/arm64: 10 Regressions on 2/20/2023 2:00:07 PM #82541

Description

Run Information

Regressions in System.Formats.Cbor.Tests.Perf_CborWriter

Repro

Payloads

Payloads

Histogram

System.Formats.Cbor.Tests.Perf_CborWriter.WriteCoseKey(publicKey: ECDSA_P521)

Description of detection logic

Docs

Run Information

Regressions in System.Text.Json.Serialization.Tests.ReadJson<ImmutableSortedDictionary<String, String>>

Repro

Payloads

Payloads

Histogram

System.Text.Json.Serialization.Tests.ReadJson<ImmutableSortedDictionary<String, String>>.DeserializeFromStream(Mode: Reflection)

Description of detection logic

Description of detection logic

Description of detection logic

Docs

Run Information

Regressions in System.Globalization.Tests.StringEquality

Repro

Payloads

Payloads

Histogram

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

Description of detection logic

Docs

Run Information

Regressions in System.Text.RegularExpressions.Tests.Perf_Regex_Common

Repro

Payloads

Payloads

Histogram

System.Text.RegularExpressions.Tests.Perf_Regex_Common.Backtracking(Options: IgnoreCase, Compiled)

Description of detection logic

Docs

Run Information

Regressions in System.Text.Json.Serialization.Tests.ReadJson<Int32>

Repro

Payloads

Payloads

Histogram

System.Text.Json.Serialization.Tests.ReadJson<Int32>.DeserializeFromReader(Mode: Reflection)

Description of detection logic

Docs

Run Information

Regressions in System.Text.Json.Serialization.Tests.WriteJson<ClassRecord>

Repro

Payloads

Payloads

Histogram

System.Text.Json.Serialization.Tests.WriteJson<ClassRecord>.SerializeObjectProperty(Mode: SourceGen)

Description of detection logic

Docs

Run Information

Regressions in System.Linq.Tests.Perf_Enumerable

Repro

Payloads

Payloads

Histogram

System.Linq.Tests.Perf_Enumerable.AppendPrepend(input: IEnumerable)

Description of detection logic

Docs

Run Information

Regressions in System.Tests.Perf_Uri

Repro

Payloads

Payloads

Histogram

System.Tests.Perf_Uri.Ctor(input: "https://a.much.longer.domain.name")

Description of detection logic

Docs

Metadata

Metadata

Assignees