[Perf] Linux/x64: 77 Regressions on 12/21/2022 11:29:15 AM

### Run Information

Architecture | x64
-- | --
OS | ubuntu 18.04
Baseline | [279fb0436f475fbc35ffeff68330f970ee77831a](https://github.com/dotnet/runtime/commit/279fb0436f475fbc35ffeff68330f970ee77831a)
Compare | [23059de6fbb664613c975131712559ccca50c702](https://github.com/dotnet/runtime/commit/23059de6fbb664613c975131712559ccca50c702)
Diff | [Diff](https://github.com/dotnet/runtime/compare/279fb0436f475fbc35ffeff68330f970ee77831a...23059de6fbb664613c975131712559ccca50c702)


### Regressions in System.Text.Json.Serialization.Tests.ReadJson&lt;SimpleStructWithProperties&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[DeserializeFromString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.ReadJson(SimpleStructWithProperties).DeserializeFromString(Mode%3a%20Reflection).html>) | 635.53 ns | 671.84 ns | 1.06 | 0.01 | False | | |
[DeserializeFromString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.ReadJson(SimpleStructWithProperties).DeserializeFromString(Mode%3a%20SourceGen).html>) | 666.67 ns | 704.45 ns | 1.06 | 0.00 | False | | |

[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/12_27_2022/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=false_Regression/System.Text.Json.Serialization.Tests.ReadJson(SimpleStructWithProperties).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Serialization.Tests.ReadJson&lt;SimpleStructWithProperties&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-a8e0f77c-7be0-4905-88b6-b8e6cc775bc0798df94a78a4ee5b9/7581b9f5-ae95-44dd-8ec0-3e5371fda5b1.zip?sv=2021-08-06&se=2023-01-20T06%3A17%3A04Z&sr=c&sp=rl&sig=uNifJ6Qe8k%2BE4Ag%2BnB1SKiwPpa7IQ54zyAh29z00d0k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-8c5ceb6b-c964-40db-832f-29d6c7729a6fd3b1b0249c048ea9e/9fa29db3-c559-490f-adab-70a8acc1b405.zip?sv=2021-08-06&se=2023-01-20T16%3A47%3A51Z&sr=c&sp=rl&sig=0QdbzNXTd1rUiJyz7YZZVYy2W%2BqsuaHl7d4WqVXaB3I%3D>)
### Histogram

#### System.Text.Json.Serialization.Tests.ReadJson&lt;SimpleStructWithProperties&gt;.DeserializeFromString(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 671.8423643592581 > 668.5774539053499.
IsChangePoint: Marked as a change because one of 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -28.392906477601986 (T) = (0 -676.0908990397227) / Math.Sqrt((17.45796218906637 / (32)) + (23.127198436526296 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.06023965598256064 = (637.6774300270498 - 676.0908990397227) / 637.6774300270498 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;SimpleStructWithProperties&gt;.DeserializeFromString(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 704.4519084995876 > 695.1266650050139.
IsChangePoint: Marked as a change because one of 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -29.148608111136923 (T) = (0 -705.8950804384264) / Math.Sqrt((26.340632578085096 / (32)) + (19.91482631595129 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.06084942888159289 = (665.4055337359428 - 705.8950804384264) / 665.4055337359428 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 | x64
-- | --
OS | ubuntu 18.04
Baseline | [279fb0436f475fbc35ffeff68330f970ee77831a](https://github.com/dotnet/runtime/commit/279fb0436f475fbc35ffeff68330f970ee77831a)
Compare | [23059de6fbb664613c975131712559ccca50c702](https://github.com/dotnet/runtime/commit/23059de6fbb664613c975131712559ccca50c702)
Diff | [Diff](https://github.com/dotnet/runtime/compare/279fb0436f475fbc35ffeff68330f970ee77831a...23059de6fbb664613c975131712559ccca50c702)


### Regressions in System.Text.Json.Serialization.Tests.WriteJson&lt;HashSet&lt;String&gt;&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[SerializeToUtf8Bytes - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(HashSet(String)).SerializeToUtf8Bytes(Mode%3a%20Reflection).html>) | 22.17 μs | 23.72 μs | 1.07 | 0.01 | False | | |
[SerializeToUtf8Bytes - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(HashSet(String)).SerializeToUtf8Bytes(Mode%3a%20SourceGen).html>) | 20.48 μs | 22.23 μs | 1.09 | 0.01 | False | | |
[SerializeToWriter - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(HashSet(String)).SerializeToWriter(Mode%3a%20Reflection).html>) | 21.41 μs | 23.15 μs | 1.08 | 0.01 | False | | |
[SerializeToWriter - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(HashSet(String)).SerializeToWriter(Mode%3a%20SourceGen).html>) | 20.29 μs | 21.47 μs | 1.06 | 0.01 | False | | |
[SerializeToStream - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(HashSet(String)).SerializeToStream(Mode%3a%20Reflection).html>) | 21.87 μs | 23.67 μs | 1.08 | 0.01 | False | | |
[SerializeToStream - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(HashSet(String)).SerializeToStream(Mode%3a%20SourceGen).html>) | 20.55 μs | 22.11 μs | 1.08 | 0.01 | False | | |

[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/12_27_2022/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=false_Regression/System.Text.Json.Serialization.Tests.WriteJson(HashSet(String)).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Serialization.Tests.WriteJson&lt;HashSet&lt;String&gt;&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-a8e0f77c-7be0-4905-88b6-b8e6cc775bc0798df94a78a4ee5b9/7581b9f5-ae95-44dd-8ec0-3e5371fda5b1.zip?sv=2021-08-06&se=2023-01-20T06%3A17%3A04Z&sr=c&sp=rl&sig=uNifJ6Qe8k%2BE4Ag%2BnB1SKiwPpa7IQ54zyAh29z00d0k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-8c5ceb6b-c964-40db-832f-29d6c7729a6fd3b1b0249c048ea9e/9fa29db3-c559-490f-adab-70a8acc1b405.zip?sv=2021-08-06&se=2023-01-20T16%3A47%3A51Z&sr=c&sp=rl&sig=0QdbzNXTd1rUiJyz7YZZVYy2W%2BqsuaHl7d4WqVXaB3I%3D>)
### Histogram

#### System.Text.Json.Serialization.Tests.WriteJson&lt;HashSet&lt;String&gt;&gt;.SerializeToUtf8Bytes(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 23.722381299608966 > 23.05005926126403.
IsChangePoint: Marked as a change because one of 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -60.010794037349804 (T) = (0 -23594.071658681518) / Math.Sqrt((7798.724719306144 / (32)) + (8909.918142917486 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.07426305570329186 = (21963.029942638303 - 23594.071658681518) / 21963.029942638303 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.WriteJson&lt;HashSet&lt;String&gt;&gt;.SerializeToUtf8Bytes(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 22.23029101266572 > 21.567770277638274.
IsChangePoint: Marked as a change because one of 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -77.70312536904908 (T) = (0 -22201.29154244032) / Math.Sqrt((10623.136991051262 / (32)) + (1089.5976068772843 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.07450620686236256 = (20661.855092740443 - 22201.29154244032) / 20661.855092740443 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.WriteJson&lt;HashSet&lt;String&gt;&gt;.SerializeToWriter(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 23.147714685487863 > 22.514176152707257.
IsChangePoint: Marked as a change because one of 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -37.300941721569444 (T) = (0 -23103.85526295302) / Math.Sqrt((13912.968937705908 / (32)) + (22200.238925190493 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.07059520021902937 = (21580.383751231355 - 23103.85526295302) / 21580.383751231355 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.WriteJson&lt;HashSet&lt;String&gt;&gt;.SerializeToWriter(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 21.466303422619045 > 21.300966394992304.
IsChangePoint: Marked as a change because one of 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -33.810774540228486 (T) = (0 -21659.682208639835) / Math.Sqrt((14823.52814222481 / (32)) + (19193.498917316956 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.06501910129613642 = (20337.36501277755 - 21659.682208639835) / 20337.36501277755 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.WriteJson&lt;HashSet&lt;String&gt;&gt;.SerializeToStream(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 23.670422570088043 > 23.021876799246705.
IsChangePoint: Marked as a change because one of 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -58.51983784382132 (T) = (0 -23608.57830955342) / Math.Sqrt((7870.487074676849 / (32)) + (9812.933299862832 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.07494441676457213 = (21962.603778725454 - 23608.57830955342) / 21962.603778725454 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.WriteJson&lt;HashSet&lt;String&gt;&gt;.SerializeToStream(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 22.11029728107345 > 21.582137599070013.
IsChangePoint: Marked as a change because one of 12/5/2022 3:14:07 PM, 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -52.614393281316985 (T) = (0 -22047.00121386997) / Math.Sqrt((8985.163497200292 / (32)) + (7962.303734669277 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.0685757416160883 = (20632.137110399508 - 22047.00121386997) / 20632.137110399508 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 | x64
-- | --
OS | ubuntu 18.04
Baseline | [279fb0436f475fbc35ffeff68330f970ee77831a](https://github.com/dotnet/runtime/commit/279fb0436f475fbc35ffeff68330f970ee77831a)
Compare | [23059de6fbb664613c975131712559ccca50c702](https://github.com/dotnet/runtime/commit/23059de6fbb664613c975131712559ccca50c702)
Diff | [Diff](https://github.com/dotnet/runtime/compare/279fb0436f475fbc35ffeff68330f970ee77831a...23059de6fbb664613c975131712559ccca50c702)


### Regressions in System.IO.Compression.Deflate

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Compress - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.IO.Compression.Deflate.Compress(level%3a%20Fastest%2c%20file%3a%20%22sum%22).html>) | 243.43 μs | 301.68 μs | 1.24 | 0.03 | False | | |

[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/12_27_2022/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=false_Regression/System.IO.Compression.Deflate.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.IO.Compression.Deflate*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-a8e0f77c-7be0-4905-88b6-b8e6cc775bc0798df94a78a4ee5b9/7581b9f5-ae95-44dd-8ec0-3e5371fda5b1.zip?sv=2021-08-06&se=2023-01-20T06%3A17%3A04Z&sr=c&sp=rl&sig=uNifJ6Qe8k%2BE4Ag%2BnB1SKiwPpa7IQ54zyAh29z00d0k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-8c5ceb6b-c964-40db-832f-29d6c7729a6fd3b1b0249c048ea9e/9fa29db3-c559-490f-adab-70a8acc1b405.zip?sv=2021-08-06&se=2023-01-20T16%3A47%3A51Z&sr=c&sp=rl&sig=0QdbzNXTd1rUiJyz7YZZVYy2W%2BqsuaHl7d4WqVXaB3I%3D>)
### Histogram

#### System.IO.Compression.Deflate.Compress(level: Fastest, file: "sum")

```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 301.6836044871795 > 255.74273451923077.
IsChangePoint: Marked as a change because one of 10/3/2022 11:00:05 AM, 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -57.257931939497546 (T) = (0 -301009.2306571983) / Math.Sqrt((5091060.134006686 / (32)) + (15364924.313884027 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.23674239806537403 = (243388.78583613253 - 301009.2306571983) / 243388.78583613253 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 | x64
-- | --
OS | ubuntu 18.04
Baseline | [279fb0436f475fbc35ffeff68330f970ee77831a](https://github.com/dotnet/runtime/commit/279fb0436f475fbc35ffeff68330f970ee77831a)
Compare | [23059de6fbb664613c975131712559ccca50c702](https://github.com/dotnet/runtime/commit/23059de6fbb664613c975131712559ccca50c702)
Diff | [Diff](https://github.com/dotnet/runtime/compare/279fb0436f475fbc35ffeff68330f970ee77831a...23059de6fbb664613c975131712559ccca50c702)


### Regressions in System.Text.Json.Serialization.Tests.WriteJson&lt;Hashtable&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[SerializeToStream - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(Hashtable).SerializeToStream(Mode%3a%20Reflection).html>) | 46.48 μs | 49.70 μs | 1.07 | 0.01 | False | | |
[SerializeToUtf8Bytes - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(Hashtable).SerializeToUtf8Bytes(Mode%3a%20SourceGen).html>) | 46.93 μs | 50.39 μs | 1.07 | 0.01 | False | | |
[SerializeToWriter - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(Hashtable).SerializeToWriter(Mode%3a%20Reflection).html>) | 46.51 μs | 48.97 μs | 1.05 | 0.01 | False | | |
[SerializeToStream - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(Hashtable).SerializeToStream(Mode%3a%20SourceGen).html>) | 46.82 μs | 49.97 μs | 1.07 | 0.00 | False | | |
[SerializeToWriter - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(Hashtable).SerializeToWriter(Mode%3a%20SourceGen).html>) | 46.33 μs | 49.19 μs | 1.06 | 0.01 | False | | |
[SerializeToUtf8Bytes - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(Hashtable).SerializeToUtf8Bytes(Mode%3a%20Reflection).html>) | 46.75 μs | 49.50 μs | 1.06 | 0.01 | False | | |

[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/12_27_2022/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=false_Regression/System.Text.Json.Serialization.Tests.WriteJson(Hashtable).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Serialization.Tests.WriteJson&lt;Hashtable&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-a8e0f77c-7be0-4905-88b6-b8e6cc775bc0798df94a78a4ee5b9/7581b9f5-ae95-44dd-8ec0-3e5371fda5b1.zip?sv=2021-08-06&se=2023-01-20T06%3A17%3A04Z&sr=c&sp=rl&sig=uNifJ6Qe8k%2BE4Ag%2BnB1SKiwPpa7IQ54zyAh29z00d0k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-8c5ceb6b-c964-40db-832f-29d6c7729a6fd3b1b0249c048ea9e/9fa29db3-c559-490f-adab-70a8acc1b405.zip?sv=2021-08-06&se=2023-01-20T16%3A47%3A51Z&sr=c&sp=rl&sig=0QdbzNXTd1rUiJyz7YZZVYy2W%2BqsuaHl7d4WqVXaB3I%3D>)
### Histogram

#### System.Text.Json.Serialization.Tests.WriteJson&lt;Hashtable&gt;.SerializeToStream(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 49.70172786777315 > 48.92493422159432.
IsChangePoint: Marked as a change because one of 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -50.79675549963927 (T) = (0 -49720.31266448799) / Math.Sqrt((58569.410913883155 / (32)) + (29692.2718224499 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.06413263239997215 = (46723.79283431257 - 49720.31266448799) / 46723.79283431257 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.WriteJson&lt;Hashtable&gt;.SerializeToUtf8Bytes(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 50.3910282824223 > 49.43088350036836.
IsChangePoint: Marked as a change because one of 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -42.78220948810945 (T) = (0 -49995.85867413949) / Math.Sqrt((21895.38625192418 / (32)) + (75874.68201330835 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.06371316688899059 = (47001.25957861446 - 49995.85867413949) / 47001.25957861446 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.WriteJson&lt;Hashtable&gt;.SerializeToWriter(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 48.97167736789073 > 48.37214084290158.
IsChangePoint: Marked as a change because one of 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -47.75304606116451 (T) = (0 -49163.30867887841) / Math.Sqrt((89583.52499200152 / (32)) + (17167.5280794242 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.0632713446405469 = (46237.78203624845 - 49163.30867887841) / 46237.78203624845 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.WriteJson&lt;Hashtable&gt;.SerializeToStream(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 49.967329130534004 > 49.048492135583345.
IsChangePoint: Marked as a change because one of 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -48.06702490721386 (T) = (0 -49992.820067675784) / Math.Sqrt((124543.38195887156 / (32)) + (11345.692334281033 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.06912712449322103 = (46760.40755337956 - 49992.820067675784) / 46760.40755337956 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.WriteJson&lt;Hashtable&gt;.SerializeToWriter(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 49.192429556878295 > 48.548468041335134.
IsChangePoint: Marked as a change because one of 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -29.78794517602734 (T) = (0 -49497.785081372705) / Math.Sqrt((214331.97494417 / (32)) + (72336.76017085396 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.06643832791347169 = (46414.10926988817 - 49497.785081372705) / 46414.10926988817 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.WriteJson&lt;Hashtable&gt;.SerializeToUtf8Bytes(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 49.50157211234177 > 49.05684516832343.
IsChangePoint: Marked as a change because one of 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -43.72621000953317 (T) = (0 -49681.30022004978) / Math.Sqrt((46308.28939034832 / (32)) + (55032.709059133136 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.06277916525590523 = (46746.58842045241 - 49681.30022004978) / 46746.58842045241 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 | x64
-- | --
OS | ubuntu 18.04
Baseline | [279fb0436f475fbc35ffeff68330f970ee77831a](https://github.com/dotnet/runtime/commit/279fb0436f475fbc35ffeff68330f970ee77831a)
Compare | [23059de6fbb664613c975131712559ccca50c702](https://github.com/dotnet/runtime/commit/23059de6fbb664613c975131712559ccca50c702)
Diff | [Diff](https://github.com/dotnet/runtime/compare/279fb0436f475fbc35ffeff68330f970ee77831a...23059de6fbb664613c975131712559ccca50c702)


### Regressions in System.Text.Json.Serialization.Tests.WriteJson&lt;ArrayList&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[SerializeToUtf8Bytes - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(ArrayList).SerializeToUtf8Bytes(Mode%3a%20Reflection).html>) | 25.32 μs | 26.88 μs | 1.06 | 0.02 | False | | |

[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/12_27_2022/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=false_Regression/System.Text.Json.Serialization.Tests.WriteJson(ArrayList).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Serialization.Tests.WriteJson&lt;ArrayList&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-a8e0f77c-7be0-4905-88b6-b8e6cc775bc0798df94a78a4ee5b9/7581b9f5-ae95-44dd-8ec0-3e5371fda5b1.zip?sv=2021-08-06&se=2023-01-20T06%3A17%3A04Z&sr=c&sp=rl&sig=uNifJ6Qe8k%2BE4Ag%2BnB1SKiwPpa7IQ54zyAh29z00d0k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-8c5ceb6b-c964-40db-832f-29d6c7729a6fd3b1b0249c048ea9e/9fa29db3-c559-490f-adab-70a8acc1b405.zip?sv=2021-08-06&se=2023-01-20T16%3A47%3A51Z&sr=c&sp=rl&sig=0QdbzNXTd1rUiJyz7YZZVYy2W%2BqsuaHl7d4WqVXaB3I%3D>)
### Histogram

#### System.Text.Json.Serialization.Tests.WriteJson&lt;ArrayList&gt;.SerializeToUtf8Bytes(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 26.884430372995418 > 26.57197619440857.
IsChangePoint: Marked as a change because one of 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -7.815749094596565 (T) = (0 -26923.270713271013) / Math.Sqrt((1043733.3107062455 / (32)) + (12003.89355571311 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.05592291751614322 = (25497.38268452669 - 26923.270713271013) / 25497.38268452669 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 | x64
-- | --
OS | ubuntu 18.04
Baseline | [279fb0436f475fbc35ffeff68330f970ee77831a](https://github.com/dotnet/runtime/commit/279fb0436f475fbc35ffeff68330f970ee77831a)
Compare | [23059de6fbb664613c975131712559ccca50c702](https://github.com/dotnet/runtime/commit/23059de6fbb664613c975131712559ccca50c702)
Diff | [Diff](https://github.com/dotnet/runtime/compare/279fb0436f475fbc35ffeff68330f970ee77831a...23059de6fbb664613c975131712559ccca50c702)


### Regressions in System.Text.Json.Serialization.Tests.WriteJson&lt;SimpleStructWithProperties&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[SerializeToString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(SimpleStructWithProperties).SerializeToString(Mode%3a%20Reflection).html>) | 594.85 ns | 638.81 ns | 1.07 | 0.01 | False | | |
[SerializeToString - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(SimpleStructWithProperties).SerializeToString(Mode%3a%20SourceGen).html>) | 481.18 ns | 525.69 ns | 1.09 | 0.01 | False | | |
[SerializeToWriter - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(SimpleStructWithProperties).SerializeToWriter(Mode%3a%20SourceGen).html>) | 245.51 ns | 258.10 ns | 1.05 | 0.01 | False | | |

[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/12_27_2022/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=false_Regression/System.Text.Json.Serialization.Tests.WriteJson(SimpleStructWithProperties).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Serialization.Tests.WriteJson&lt;SimpleStructWithProperties&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-a8e0f77c-7be0-4905-88b6-b8e6cc775bc0798df94a78a4ee5b9/7581b9f5-ae95-44dd-8ec0-3e5371fda5b1.zip?sv=2021-08-06&se=2023-01-20T06%3A17%3A04Z&sr=c&sp=rl&sig=uNifJ6Qe8k%2BE4Ag%2BnB1SKiwPpa7IQ54zyAh29z00d0k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-8c5ceb6b-c964-40db-832f-29d6c7729a6fd3b1b0249c048ea9e/9fa29db3-c559-490f-adab-70a8acc1b405.zip?sv=2021-08-06&se=2023-01-20T16%3A47%3A51Z&sr=c&sp=rl&sig=0QdbzNXTd1rUiJyz7YZZVYy2W%2BqsuaHl7d4WqVXaB3I%3D>)
### Histogram

#### System.Text.Json.Serialization.Tests.WriteJson&lt;SimpleStructWithProperties&gt;.SerializeToString(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 638.8124421296295 > 625.5727349610523.
IsChangePoint: Marked as a change because one of 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -19.485085294322392 (T) = (0 -639.386563033632) / Math.Sqrt((23.097168316469585 / (32)) + (72.74152008806084 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.07124723125484733 = (596.8618115210077 - 639.386563033632) / 596.8618115210077 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.WriteJson&lt;SimpleStructWithProperties&gt;.SerializeToString(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 525.6901811655168 > 509.35095050074.
IsChangePoint: Marked as a change because one of 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -54.802906309549385 (T) = (0 -522.6348063115538) / Math.Sqrt((4.512418401362847 / (32)) + (6.843588374040357 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.08190323635039103 = (483.0698243167936 - 522.6348063115538) / 483.0698243167936 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.WriteJson&lt;SimpleStructWithProperties&gt;.SerializeToWriter(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 258.0963235661159 > 256.42636459992553.
IsChangePoint: Marked as a change because one of 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -27.695692904090166 (T) = (0 -260.01154845654264) / Math.Sqrt((2.348402895200715 / (32)) + (3.935486877067521 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.06107690678111887 = (245.04496026146987 - 260.01154845654264) / 245.04496026146987 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 | x64
-- | --
OS | ubuntu 18.04
Baseline | [279fb0436f475fbc35ffeff68330f970ee77831a](https://github.com/dotnet/runtime/commit/279fb0436f475fbc35ffeff68330f970ee77831a)
Compare | [23059de6fbb664613c975131712559ccca50c702](https://github.com/dotnet/runtime/commit/23059de6fbb664613c975131712559ccca50c702)
Diff | [Diff](https://github.com/dotnet/runtime/compare/279fb0436f475fbc35ffeff68330f970ee77831a...23059de6fbb664613c975131712559ccca50c702)


### Regressions in System.Text.Json.Serialization.Tests.WriteJson&lt;ImmutableDictionary&lt;String, String&gt;&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[SerializeToUtf8Bytes - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(ImmutableDictionary(String%2c%20String)).SerializeToUtf8Bytes(Mode%3a%20SourceGen).html>) | 48.38 μs | 51.27 μs | 1.06 | 0.01 | False | | |
[SerializeToStream - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(ImmutableDictionary(String%2c%20String)).SerializeToStream(Mode%3a%20Reflection).html>) | 52.79 μs | 55.48 μs | 1.05 | 0.00 | False | | |
[SerializeToWriter - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(ImmutableDictionary(String%2c%20String)).SerializeToWriter(Mode%3a%20SourceGen).html>) | 47.07 μs | 50.83 μs | 1.08 | 0.01 | False | | |
[SerializeToStream - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04_LLVM=false_MonoAOT=false_MonoInterpreter=false/System.Text.Json.Serialization.Tests.WriteJson(ImmutableDictionary(String%2c%20String)).SerializeToStream(Mode%3a%20SourceGen).html>) | 47.83 μs | 51.07 μs | 1.07 | 0.01 | False | | |

[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/12_27_2022/refs/heads/main_x64_ubuntu%2018.04_LLVM=false_MonoAOT=false_MonoInterpreter=false_Regression/System.Text.Json.Serialization.Tests.WriteJson(ImmutableDictionary(String,%20String)).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Serialization.Tests.WriteJson&lt;ImmutableDictionary&lt;String, String&gt;&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-a8e0f77c-7be0-4905-88b6-b8e6cc775bc0798df94a78a4ee5b9/7581b9f5-ae95-44dd-8ec0-3e5371fda5b1.zip?sv=2021-08-06&se=2023-01-20T06%3A17%3A04Z&sr=c&sp=rl&sig=uNifJ6Qe8k%2BE4Ag%2BnB1SKiwPpa7IQ54zyAh29z00d0k%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-8c5ceb6b-c964-40db-832f-29d6c7729a6fd3b1b0249c048ea9e/9fa29db3-c559-490f-adab-70a8acc1b405.zip?sv=2021-08-06&se=2023-01-20T16%3A47%3A51Z&sr=c&sp=rl&sig=0QdbzNXTd1rUiJyz7YZZVYy2W%2BqsuaHl7d4WqVXaB3I%3D>)
### Histogram

#### System.Text.Json.Serialization.Tests.WriteJson&lt;ImmutableDictionary&lt;String, String&gt;&gt;.SerializeToUtf8Bytes(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 51.27312737704918 > 50.79655101739112.
IsChangePoint: Marked as a change because one of 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -53.77218559419003 (T) = (0 -51241.20517576477) / Math.Sqrt((44452.25035075539 / (32)) + (26333.79525594033 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.05937043182658445 = (48369.487797968664 - 51241.20517576477) / 48369.487797968664 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.WriteJson&lt;ImmutableDictionary&lt;String, String&gt;&gt;.SerializeToStream(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 55.47882582344517 > 55.27044142834596.
IsChangePoint: Marked as a change because one of 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -48.66520902630139 (T) = (0 -55776.092793517404) / Math.Sqrt((52383.57858714056 / (32)) + (50113.323803391606 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.061587040677713804 = (52540.2917107109 - 55776.092793517404) / 52540.2917107109 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.WriteJson&lt;ImmutableDictionary&lt;String, String&gt;&gt;.SerializeToWriter(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 50.83218599369381 > 49.56745644427314.
IsChangePoint: Marked as a change because one of 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -42.25131086867199 (T) = (0 -50679.429206170695) / Math.Sqrt((68873.75961925043 / (32)) + (65544.94196715008 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.06775773008270503 = (47463.41588390583 - 50679.429206170695) / 47463.41588390583 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.WriteJson&lt;ImmutableDictionary&lt;String, String&gt;&gt;.SerializeToStream(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 51.07251237785016 > 50.21897424347747.
IsChangePoint: Marked as a change because one of 12/5/2022 3:14:07 PM, 12/21/2022 9:23:17 AM, 12/26/2022 8:24:36 PM falls between 12/17/2022 10:44:50 PM and 12/26/2022 8:24:36 PM.
IsRegressionStdDev: Marked as regression because -51.13245469923749 (T) = (0 -51077.05288699844) / Math.Sqrt((66777.62851061621 / (32)) + (22003.157312873886 / (18))) is less than -2.010634757623041 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (32) + (18) - 2, .025) and -0.06110706550937817 = (48135.626033626686 - 51077.05288699844) / 48135.626033626686 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	x64
OS	ubuntu 18.04
Baseline	279fb0436f475fbc35ffeff68330f970ee77831a
Compare	23059de6fbb664613c975131712559ccca50c702
Diff	Diff

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
DeserializeFromString - Duration of single invocation	635.53 ns	671.84 ns	1.06	0.01	False
DeserializeFromString - Duration of single invocation	666.67 ns	704.45 ns	1.06	0.00	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
SerializeToUtf8Bytes - Duration of single invocation	22.17 μs	23.72 μs	1.07	0.01	False
SerializeToUtf8Bytes - Duration of single invocation	20.48 μs	22.23 μs	1.09	0.01	False
SerializeToWriter - Duration of single invocation	21.41 μs	23.15 μs	1.08	0.01	False
SerializeToWriter - Duration of single invocation	20.29 μs	21.47 μs	1.06	0.01	False
SerializeToStream - Duration of single invocation	21.87 μs	23.67 μs	1.08	0.01	False
SerializeToStream - Duration of single invocation	20.55 μs	22.11 μs	1.08	0.01	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
SerializeToStream - Duration of single invocation	46.48 μs	49.70 μs	1.07	0.01	False
SerializeToUtf8Bytes - Duration of single invocation	46.93 μs	50.39 μs	1.07	0.01	False
SerializeToWriter - Duration of single invocation	46.51 μs	48.97 μs	1.05	0.01	False
SerializeToStream - Duration of single invocation	46.82 μs	49.97 μs	1.07	0.00	False
SerializeToWriter - Duration of single invocation	46.33 μs	49.19 μs	1.06	0.01	False
SerializeToUtf8Bytes - Duration of single invocation	46.75 μs	49.50 μs	1.06	0.01	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
SerializeToString - Duration of single invocation	594.85 ns	638.81 ns	1.07	0.01	False
SerializeToString - Duration of single invocation	481.18 ns	525.69 ns	1.09	0.01	False
SerializeToWriter - Duration of single invocation	245.51 ns	258.10 ns	1.05	0.01	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
SerializeToUtf8Bytes - Duration of single invocation	48.38 μs	51.27 μs	1.06	0.01	False
SerializeToStream - Duration of single invocation	52.79 μs	55.48 μs	1.05	0.00	False
SerializeToWriter - Duration of single invocation	47.07 μs	50.83 μs	1.08	0.01	False
SerializeToStream - Duration of single invocation	47.83 μs	51.07 μs	1.07	0.01	False

[Perf] Linux/x64: 77 Regressions on 12/21/2022 11:29:15 AM #11104

Description

performanceautofileropenedon Dec 27, 2022

Run Information

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

Repro

Payloads

Histogram

System.Text.Json.Serialization.Tests.ReadJson<SimpleStructWithProperties>.DeserializeFromString(Mode: Reflection)

Description of detection logic

Description of detection logic

Docs

Regressions in System.Text.Json.Serialization.Tests.WriteJson<HashSet<String>>

Repro

Payloads

Histogram

System.Text.Json.Serialization.Tests.WriteJson<HashSet<String>>.SerializeToUtf8Bytes(Mode: Reflection)

Description of detection logic

Description of detection logic

Description of detection logic

Description of detection logic

Description of detection logic

Description of detection logic

Docs

Run Information

Regressions in System.IO.Compression.Deflate

Repro

Payloads

Histogram

System.IO.Compression.Deflate.Compress(level: Fastest, file: "sum")

Description of detection logic

Docs

Run Information

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

Repro

Payloads

Histogram

System.Text.Json.Serialization.Tests.WriteJson<Hashtable>.SerializeToStream(Mode: Reflection)

Description of detection logic

Description of detection logic

Description of detection logic

Description of detection logic

Description of detection logic

Description of detection logic

Docs

Run Information

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

Repro

Payloads

Histogram

System.Text.Json.Serialization.Tests.WriteJson<ArrayList>.SerializeToUtf8Bytes(Mode: Reflection)

Description of detection logic

Docs

Run Information

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

Repro

Payloads

Histogram

System.Text.Json.Serialization.Tests.WriteJson<SimpleStructWithProperties>.SerializeToString(Mode: Reflection)

Description of detection logic

Description of detection logic

Description of detection logic

Docs

Run Information

Regressions in System.Text.Json.Serialization.Tests.WriteJson<ImmutableDictionary<String, String>>

Repro

Payloads

Histogram

System.Text.Json.Serialization.Tests.WriteJson<ImmutableDictionary<String, String>>.SerializeToUtf8Bytes(Mode: SourceGen)

Description of detection logic

Description of detection logic

Description of detection logic

Description of detection logic

Docs

Metadata

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performanceautofiler
openedon Dec 27, 2022