Regressions in System.Text.Perf_Utf8Encoding and System.Text.Tests.Perf_Encoding

### Run Information

Architecture | arm64
-- | --
OS | Windows 10.0.25094
Baseline | [279fb0436f475fbc35ffeff68330f970ee77831a](https://github.com/dotnet/runtime/commit/279fb0436f475fbc35ffeff68330f970ee77831a)
Compare | [8d66372138fca4c9c73eef07c1632f13a0887d8e](https://github.com/dotnet/runtime/commit/8d66372138fca4c9c73eef07c1632f13a0887d8e)
Diff | [Diff](https://github.com/dotnet/runtime/compare/279fb0436f475fbc35ffeff68330f970ee77831a...8d66372138fca4c9c73eef07c1632f13a0887d8e)


### Regressions in System.Text.Perf_Utf8Encoding

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[GetByteCount - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.25094/System.Text.Perf_Utf8Encoding.GetByteCount(Input%3a%20Greek).html>) | 38.55 μs | 58.79 μs | 1.52 | 0.63 | False | | |
[GetBytes - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.25094/System.Text.Perf_Utf8Encoding.GetBytes(Input%3a%20EnglishMostlyAscii).html>) | 203.89 μs | 254.92 μs | 1.25 | 0.60 | False | | |
[GetByteCount - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.25094/System.Text.Perf_Utf8Encoding.GetByteCount(Input%3a%20Chinese).html>) | 31.05 μs | 59.27 μs | 1.91 | 0.63 | False | | |
[GetByteCount - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.25094/System.Text.Perf_Utf8Encoding.GetByteCount(Input%3a%20EnglishMostlyAscii).html>) | 71.94 μs | 127.82 μs | 1.78 | 0.63 | False | | |
[GetByteCount - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.25094/System.Text.Perf_Utf8Encoding.GetByteCount(Input%3a%20Cyrillic).html>) | 23.92 μs | 47.40 μs | 1.98 | 0.65 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/12_29_2022/refs/heads/main_arm64_Windows%2010.0.25094_Regression/System.Text.Perf_Utf8Encoding_1.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/12_29_2022/refs/heads/main_arm64_Windows%2010.0.25094_Regression/System.Text.Perf_Utf8Encoding_2.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/12_29_2022/refs/heads/main_arm64_Windows%2010.0.25094_Regression/System.Text.Perf_Utf8Encoding_3.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/12_29_2022/refs/heads/main_arm64_Windows%2010.0.25094_Regression/System.Text.Perf_Utf8Encoding_4.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/12_29_2022/refs/heads/main_arm64_Windows%2010.0.25094_Regression/System.Text.Perf_Utf8Encoding_5.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/12_29_2022/refs/heads/main_arm64_Windows%2010.0.25094_Regression/System.Text.Perf_Utf8Encoding.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Perf_Utf8Encoding*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-417a7bda-c48f-4b8c-b921-206db636e6971efafa4f4af4e18bb/afa9cbe7-e7b6-48c4-8f17-0207ff95d0ac.zip?sv=2021-08-06&se=2023-01-20T04%3A52%3A30Z&sr=c&sp=rl&sig=h3a7Nh6gsO2GUfKW2k%2FyXi%2BwgZMJmNBgOymWgCkX0MI%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-b3b4e951-f9e5-47a8-9e66-3d270a8ff36dad0a9b8d3de4e41ac/aa1368b8-be13-4e57-9141-dca2745add61.zip?sv=2021-08-06&se=2023-01-20T23%3A19%3A17Z&sr=c&sp=rl&sig=ztNB3Pi4VtpXTK%2B50vz8MbZdVuIh2JBNhbCIrZ86etI%3D>)
### Histogram

#### System.Text.Perf_Utf8Encoding.GetByteCount(Input: Greek)

```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 58.78677252650176 > 38.56174266572224.
IsChangePoint: Marked as a change because one of 12/21/2022 10:31:08 AM, 12/28/2022 6:20:56 PM falls between 12/19/2022 10:34:07 PM and 12/28/2022 6:20:56 PM.
IsRegressionStdDev: Marked as regression because -24.642880356633054 (T) = (0 -61272.045484563685) / Math.Sqrt((3231635.7490745448 / (13)) + (13770696.509863114 / (20))) is less than -2.0395134463927462 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (13) + (20) - 2, .025) and -0.6375680776935077 = (37416.487484822326 - 61272.045484563685) / 37416.487484822326 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.Perf_Utf8Encoding.GetBytes(Input: EnglishMostlyAscii)

```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 254.92176315789467 > 202.5638441984954.
IsChangePoint: Marked as a change because one of 12/21/2022 10:31:08 AM, 12/28/2022 6:20:56 PM falls between 12/19/2022 10:34:07 PM and 12/28/2022 6:20:56 PM.
IsRegressionStdDev: Marked as regression because -11.030456260848213 (T) = (0 -249154.62405981254) / Math.Sqrt((201147770.39900446 / (13)) + (151574382.4788075 / (20))) is less than -2.0395134463927462 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (13) + (20) - 2, .025) and -0.2699330956401716 = (196195.0790283279 - 249154.62405981254) / 196195.0790283279 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.Perf_Utf8Encoding.GetByteCount(Input: Chinese)

```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 59.265270161290324 > 35.61435114979619.
IsChangePoint: Marked as a change because one of 12/21/2022 10:31:08 AM, 12/28/2022 6:20:56 PM falls between 12/19/2022 10:34:07 PM and 12/28/2022 6:20:56 PM.
IsRegressionStdDev: Marked as regression because -23.49290089307371 (T) = (0 -58515.49681304273) / Math.Sqrt((4190721.2612498812 / (13)) + (15601297.696510985 / (20))) is less than -2.0395134463927462 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (13) + (20) - 2, .025) and -0.7287340583031703 = (33848.755701891074 - 58515.49681304273) / 33848.755701891074 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.Perf_Utf8Encoding.GetByteCount(Input: EnglishMostlyAscii)

```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 127.81981534090906 > 80.15821677714646.
IsChangePoint: Marked as a change because one of 12/21/2022 10:31:08 AM, 12/28/2022 6:20:56 PM falls between 12/19/2022 10:34:07 PM and 12/28/2022 6:20:56 PM.
IsRegressionStdDev: Marked as regression because -20.88937159330011 (T) = (0 -122573.92458679804) / Math.Sqrt((6202223.574572832 / (13)) + (89470089.16861711 / (20))) is less than -2.0395134463927462 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (13) + (20) - 2, .025) and -0.6107971293310409 = (76095.19681581666 - 122573.92458679804) / 76095.19681581666 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.Perf_Utf8Encoding.GetByteCount(Input: Cyrillic)

```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 47.402465206185575 > 26.441110882146138.
IsChangePoint: Marked as a change because one of 12/21/2022 10:31:08 AM, 12/28/2022 6:20:56 PM falls between 12/19/2022 10:34:07 PM and 12/28/2022 6:20:56 PM.
IsRegressionStdDev: Marked as regression because -24.18386114944223 (T) = (0 -47817.66947918986) / Math.Sqrt((3340879.0019299146 / (13)) + (12035498.973049158 / (20))) is less than -2.0395134463927462 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (13) + (20) - 2, .025) and -0.8820978500452556 = (25406.579938466042 - 47817.66947918986) / 25406.579938466042 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 10.0.25094
Baseline | [279fb0436f475fbc35ffeff68330f970ee77831a](https://github.com/dotnet/runtime/commit/279fb0436f475fbc35ffeff68330f970ee77831a)
Compare | [8d66372138fca4c9c73eef07c1632f13a0887d8e](https://github.com/dotnet/runtime/commit/8d66372138fca4c9c73eef07c1632f13a0887d8e)
Diff | [Diff](https://github.com/dotnet/runtime/compare/279fb0436f475fbc35ffeff68330f970ee77831a...8d66372138fca4c9c73eef07c1632f13a0887d8e)


### Regressions in System.Text.Tests.Perf_Encoding

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[GetBytes - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.25094/System.Text.Tests.Perf_Encoding.GetBytes(size%3a%2016%2c%20encName%3a%20%22ascii%22).html>) | 39.97 ns | 50.39 ns | 1.26 | 0.65 | False | | |
[GetChars - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.25094/System.Text.Tests.Perf_Encoding.GetChars(size%3a%2016%2c%20encName%3a%20%22utf-8%22).html>) | 43.40 ns | 51.90 ns | 1.20 | 0.65 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/12_29_2022/refs/heads/main_arm64_Windows%2010.0.25094_Regression/System.Text.Tests.Perf_Encoding_1.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/12_29_2022/refs/heads/main_arm64_Windows%2010.0.25094_Regression/System.Text.Tests.Perf_Encoding_2.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/12_29_2022/refs/heads/main_arm64_Windows%2010.0.25094_Regression/System.Text.Tests.Perf_Encoding.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Tests.Perf_Encoding*'
```
<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-417a7bda-c48f-4b8c-b921-206db636e6971efafa4f4af4e18bb/afa9cbe7-e7b6-48c4-8f17-0207ff95d0ac.zip?sv=2021-08-06&se=2023-01-20T04%3A52%3A30Z&sr=c&sp=rl&sig=h3a7Nh6gsO2GUfKW2k%2FyXi%2BwgZMJmNBgOymWgCkX0MI%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-b3b4e951-f9e5-47a8-9e66-3d270a8ff36dad0a9b8d3de4e41ac/aa1368b8-be13-4e57-9141-dca2745add61.zip?sv=2021-08-06&se=2023-01-20T23%3A19%3A17Z&sr=c&sp=rl&sig=ztNB3Pi4VtpXTK%2B50vz8MbZdVuIh2JBNhbCIrZ86etI%3D>)
### Histogram

#### System.Text.Tests.Perf_Encoding.GetBytes(size: 16, encName: "ascii")

```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 50.38990552918499 > 42.86550871073043.
IsChangePoint: Marked as a change because one of 10/17/2022 3:02:22 AM, 12/21/2022 10:31:08 AM, 12/28/2022 6:20:56 PM falls between 12/19/2022 10:34:07 PM and 12/28/2022 6:20:56 PM.
IsRegressionStdDev: Marked as regression because -5.127555412582627 (T) = (0 -44.637560236603335) / Math.Sqrt((8.958820198634074 / (13)) + (10.93650399530871 / (20))) is less than -2.0395134463927462 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (13) + (20) - 2, .025) and -0.1464031449234489 = (38.93705319482878 - 44.637560236603335) / 38.93705319482878 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.Tests.Perf_Encoding.GetChars(size: 16, encName: "utf-8")

```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 51.8996410785766 > 48.899269298461725.
IsChangePoint: Marked as a change because one of 12/22/2022 9:36:43 AM, 12/28/2022 6:20:56 PM falls between 12/19/2022 10:34:07 PM and 12/28/2022 6:20:56 PM.
IsRegressionStdDev: Marked as regression because -3.395306959489965 (T) = (0 -54.93801804432714) / Math.Sqrt((20.718999452564333 / (17)) + (12.97011407759705 / (16))) is less than -2.0395134463927462 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (17) + (16) - 2, .025) and -0.09654163952613115 = (50.101169042762955 - 54.93801804432714) / 50.101169042762955 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>




Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Regressions in System.Text.Perf_Utf8Encoding and System.Text.Tests.Perf_Encoding #80247

Run Information

Regressions in System.Text.Perf_Utf8Encoding

Repro

Payloads

Histogram

System.Text.Perf_Utf8Encoding.GetByteCount(Input: Greek)

Description of detection logic

Description of detection logic

Description of detection logic

Description of detection logic

Description of detection logic

Docs

Regressions in System.Text.Tests.Perf_Encoding

Repro

Payloads

Histogram

System.Text.Tests.Perf_Encoding.GetBytes(size: 16, encName: "ascii")

Description of detection logic

Description of detection logic

Docs

Metadata

Assignees

Labels

Type

Fields

Projects

Milestone

Relationships

Development

Architecture	arm64
OS	Windows 10.0.25094
Baseline	279fb0436f475fbc35ffeff68330f970ee77831a
Compare	8d66372138fca4c9c73eef07c1632f13a0887d8e
Diff	Diff

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
GetByteCount - Duration of single invocation	38.55 μs	58.79 μs	1.52	0.63	False
GetBytes - Duration of single invocation	203.89 μs	254.92 μs	1.25	0.60	False
GetByteCount - Duration of single invocation	31.05 μs	59.27 μs	1.91	0.63	False
GetByteCount - Duration of single invocation	71.94 μs	127.82 μs	1.78	0.63	False
GetByteCount - Duration of single invocation	23.92 μs	47.40 μs	1.98	0.65	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
GetBytes - Duration of single invocation	39.97 ns	50.39 ns	1.26	0.65	False
GetChars - Duration of single invocation	43.40 ns	51.90 ns	1.20	0.65	False

Regressions in System.Text.Perf_Utf8Encoding and System.Text.Tests.Perf_Encoding #80247

Description

Run Information

Regressions in System.Text.Perf_Utf8Encoding

Repro

Payloads

Histogram

System.Text.Perf_Utf8Encoding.GetByteCount(Input: Greek)

Description of detection logic

Description of detection logic

Description of detection logic

Description of detection logic

Description of detection logic

Docs

Regressions in System.Text.Tests.Perf_Encoding

Repro

Payloads

Histogram

System.Text.Tests.Perf_Encoding.GetBytes(size: 16, encName: "ascii")

Description of detection logic

Description of detection logic

Docs

Metadata

Metadata

Assignees

Labels

Type

Fields

Projects

Milestone

Relationships

Development

Issue actions