[Perf] Windows/arm64: 5 Regressions on 6/8/2023 3:52:42 PM

### Run Information

Name | Value
-- | --
Architecture | arm64
OS | Windows 10.0.25094
Queue | AmpereWindows
Baseline | [dd715a0747ebeb85a234c8abec7e01bb6652c8ce](https://github.com/dotnet/runtime/commit/dd715a0747ebeb85a234c8abec7e01bb6652c8ce)
Compare | [9bcf52342b5a6573ecd2c81fbfd541df0ebc42f4](https://github.com/dotnet/runtime/commit/9bcf52342b5a6573ecd2c81fbfd541df0ebc42f4)
Diff | [Diff](https://github.com/dotnet/runtime/compare/dd715a0747ebeb85a234c8abec7e01bb6652c8ce...9bcf52342b5a6573ecd2c81fbfd541df0ebc42f4)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Collections.Tests.DictionarySequentialKeys

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[TryGetValue_17_Int_Int - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.25094/System.Collections.Tests.DictionarySequentialKeys.TryGetValue_17_Int_Int.html>) | 5.88 ns | 7.40 ns | 1.26 | 0.72 | False | | |
[TryGetValue_3k_Int_Int - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.25094/System.Collections.Tests.DictionarySequentialKeys.TryGetValue_3k_Int_Int.html>) | 5.61 ns | 7.64 ns | 1.36 | 0.68 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_15_2023/refs/heads/main_arm64_Windows%2010.0.25094_Regression/System.Collections.Tests.DictionarySequentialKeys_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_15_2023/refs/heads/main_arm64_Windows%2010.0.25094_Regression/System.Collections.Tests.DictionarySequentialKeys_2.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_15_2023/refs/heads/main_arm64_Windows%2010.0.25094_Regression/System.Collections.Tests.DictionarySequentialKeys.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-4c54b1ca-0eb1-462c-9d95-cc3ca481b180da58a3ec2a1474aaf/2fa3e136-0b1a-43cf-8a10-fa580f8e3338.zip?sv=2021-08-06&se=2023-07-07T21%3A37%3A13Z&sr=c&sp=rl&sig=b1zRCKHt62oPiV6fXytgY7Vq3I%2F3Nb3R140kQirlK6Y%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-47f50acd-3cbf-4847-81be-b442e356f733a0d11fac47041c79e/40a8cce1-161f-4c79-b916-9f4ece960f85.zip?sv=2021-08-06&se=2023-07-09T02%3A14%3A11Z&sr=c&sp=rl&sig=Opj7crwJahAdOHiwtCYnR%2FYdX7nCVYcw%2FKkyCgHquaM%3D>)

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.Tests.DictionarySequentialKeys*'
```

<details>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-4c54b1ca-0eb1-462c-9d95-cc3ca481b180da58a3ec2a1474aaf/2fa3e136-0b1a-43cf-8a10-fa580f8e3338.zip?sv=2021-08-06&se=2023-07-07T21%3A37%3A13Z&sr=c&sp=rl&sig=b1zRCKHt62oPiV6fXytgY7Vq3I%2F3Nb3R140kQirlK6Y%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-47f50acd-3cbf-4847-81be-b442e356f733a0d11fac47041c79e/40a8cce1-161f-4c79-b916-9f4ece960f85.zip?sv=2021-08-06&se=2023-07-09T02%3A14%3A11Z&sr=c&sp=rl&sig=Opj7crwJahAdOHiwtCYnR%2FYdX7nCVYcw%2FKkyCgHquaM%3D>)
### Histogram

#### System.Collections.Tests.DictionarySequentialKeys.TryGetValue_17_Int_Int

```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 7.395976936880073 > 5.7943076452128945.
IsChangePoint: Marked as a change because one of 3/31/2023 7:02:21 PM, 5/26/2023 9:55:14 AM, 6/8/2023 5:31:08 AM, 6/14/2023 3:35:53 PM falls between 6/5/2023 10:43:22 AM and 6/14/2023 3:35:53 PM.
IsRegressionStdDev: Marked as regression because -7.695170562714825 (T) = (0 -8.018789895969261) / Math.Sqrt((0.18774556681341403 / (12)) + (1.3012597196780862 / (13))) is less than -2.0686576104106944 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (12) + (13) - 2, .025) and -0.484735265675485 = (5.40082133249599 - 8.018789895969261) / 5.40082133249599 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.

```
### JIT Disasms

#### System.Collections.Tests.DictionarySequentialKeys.TryGetValue_3k_Int_Int

```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 7.641963550983901 > 5.879509724413551.
IsChangePoint: Marked as a change because one of 5/26/2023 9:55:14 AM, 6/8/2023 5:31:08 AM, 6/14/2023 3:35:53 PM falls between 6/5/2023 10:43:22 AM and 6/14/2023 3:35:53 PM.
IsRegressionStdDev: Marked as regression because -13.113548564576806 (T) = (0 -8.743435290828566) / Math.Sqrt((0.17092856038841 / (12)) + (0.6791435685309158 / (13))) is less than -2.0686576104106944 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (12) + (13) - 2, .025) and -0.6305911085842962 = (5.362126191415179 - 8.743435290828566) / 5.362126191415179 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.

```
### JIT Disasms



### 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

Name | Value
-- | --
Architecture | arm64
OS | Windows 10.0.25094
Queue | AmpereWindows
Baseline | [dd715a0747ebeb85a234c8abec7e01bb6652c8ce](https://github.com/dotnet/runtime/commit/dd715a0747ebeb85a234c8abec7e01bb6652c8ce)
Compare | [9bcf52342b5a6573ecd2c81fbfd541df0ebc42f4](https://github.com/dotnet/runtime/commit/9bcf52342b5a6573ecd2c81fbfd541df0ebc42f4)
Diff | [Diff](https://github.com/dotnet/runtime/compare/dd715a0747ebeb85a234c8abec7e01bb6652c8ce...9bcf52342b5a6573ecd2c81fbfd541df0ebc42f4)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Buffers.Text.Tests.Utf8ParserTests

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[TryParseDateTimeOffset - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.25094/System.Buffers.Text.Tests.Utf8ParserTests.TryParseDateTimeOffset(value%3a%2012%2f30%2f2017%203%3a45%3a22%20AM%20-08%3a00).html>) | 5.97 ns | 7.64 ns | 1.28 | 0.83 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_15_2023/refs/heads/main_arm64_Windows%2010.0.25094_Regression/System.Buffers.Text.Tests.Utf8ParserTests_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_15_2023/refs/heads/main_arm64_Windows%2010.0.25094_Regression/System.Buffers.Text.Tests.Utf8ParserTests.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-4c54b1ca-0eb1-462c-9d95-cc3ca481b180da58a3ec2a1474aaf/2fa3e136-0b1a-43cf-8a10-fa580f8e3338.zip?sv=2021-08-06&se=2023-07-07T21%3A37%3A13Z&sr=c&sp=rl&sig=b1zRCKHt62oPiV6fXytgY7Vq3I%2F3Nb3R140kQirlK6Y%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-47f50acd-3cbf-4847-81be-b442e356f733a0d11fac47041c79e/40a8cce1-161f-4c79-b916-9f4ece960f85.zip?sv=2021-08-06&se=2023-07-09T02%3A14%3A11Z&sr=c&sp=rl&sig=Opj7crwJahAdOHiwtCYnR%2FYdX7nCVYcw%2FKkyCgHquaM%3D>)

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Buffers.Text.Tests.Utf8ParserTests*'
```

<details>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-4c54b1ca-0eb1-462c-9d95-cc3ca481b180da58a3ec2a1474aaf/2fa3e136-0b1a-43cf-8a10-fa580f8e3338.zip?sv=2021-08-06&se=2023-07-07T21%3A37%3A13Z&sr=c&sp=rl&sig=b1zRCKHt62oPiV6fXytgY7Vq3I%2F3Nb3R140kQirlK6Y%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-47f50acd-3cbf-4847-81be-b442e356f733a0d11fac47041c79e/40a8cce1-161f-4c79-b916-9f4ece960f85.zip?sv=2021-08-06&se=2023-07-09T02%3A14%3A11Z&sr=c&sp=rl&sig=Opj7crwJahAdOHiwtCYnR%2FYdX7nCVYcw%2FKkyCgHquaM%3D>)
### Histogram

#### System.Buffers.Text.Tests.Utf8ParserTests.TryParseDateTimeOffset(value: 12/30/2017 3:45:22 AM -08:00)

```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 7.640911329696776 > 6.302415903491371.
IsChangePoint: Marked as a change because one of 5/26/2023 9:55:14 AM, 6/8/2023 5:31:08 AM, 6/14/2023 3:35:53 PM falls between 6/5/2023 10:43:22 AM and 6/14/2023 3:35:53 PM.
IsRegressionStdDev: Marked as regression because -7.262938294741985 (T) = (0 -9.710078430474258) / Math.Sqrt((0.9973057405368995 / (12)) + (2.751057774974143 / (13))) is less than -2.0686576104106944 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (12) + (13) - 2, .025) and -0.6836997855265233 = (5.7671079570980295 - 9.710078430474258) / 5.7671079570980295 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.

```
### JIT Disasms



### 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

Name | Value
-- | --
Architecture | arm64
OS | Windows 10.0.25094
Queue | AmpereWindows
Baseline | [dd715a0747ebeb85a234c8abec7e01bb6652c8ce](https://github.com/dotnet/runtime/commit/dd715a0747ebeb85a234c8abec7e01bb6652c8ce)
Compare | [9bcf52342b5a6573ecd2c81fbfd541df0ebc42f4](https://github.com/dotnet/runtime/commit/9bcf52342b5a6573ecd2c81fbfd541df0ebc42f4)
Diff | [Diff](https://github.com/dotnet/runtime/compare/dd715a0747ebeb85a234c8abec7e01bb6652c8ce...9bcf52342b5a6573ecd2c81fbfd541df0ebc42f4)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Tests.Perf_String

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Replace_String - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.25094/System.Tests.Perf_String.Replace_String(text%3a%20%22This%20is%20a%20very%20nice%20sentence%22%2c%20oldValue%3a%20%22nice%22%2c%20newValue%3a%20%22bad%22).html>) | 73.13 ns | 103.03 ns | 1.41 | 0.58 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_15_2023/refs/heads/main_arm64_Windows%2010.0.25094_Regression/System.Tests.Perf_String_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_15_2023/refs/heads/main_arm64_Windows%2010.0.25094_Regression/System.Tests.Perf_String.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-4c54b1ca-0eb1-462c-9d95-cc3ca481b180da58a3ec2a1474aaf/2fa3e136-0b1a-43cf-8a10-fa580f8e3338.zip?sv=2021-08-06&se=2023-07-07T21%3A37%3A13Z&sr=c&sp=rl&sig=b1zRCKHt62oPiV6fXytgY7Vq3I%2F3Nb3R140kQirlK6Y%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-47f50acd-3cbf-4847-81be-b442e356f733a0d11fac47041c79e/40a8cce1-161f-4c79-b916-9f4ece960f85.zip?sv=2021-08-06&se=2023-07-09T02%3A14%3A11Z&sr=c&sp=rl&sig=Opj7crwJahAdOHiwtCYnR%2FYdX7nCVYcw%2FKkyCgHquaM%3D>)

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Tests.Perf_String*'
```

<details>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-4c54b1ca-0eb1-462c-9d95-cc3ca481b180da58a3ec2a1474aaf/2fa3e136-0b1a-43cf-8a10-fa580f8e3338.zip?sv=2021-08-06&se=2023-07-07T21%3A37%3A13Z&sr=c&sp=rl&sig=b1zRCKHt62oPiV6fXytgY7Vq3I%2F3Nb3R140kQirlK6Y%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-47f50acd-3cbf-4847-81be-b442e356f733a0d11fac47041c79e/40a8cce1-161f-4c79-b916-9f4ece960f85.zip?sv=2021-08-06&se=2023-07-09T02%3A14%3A11Z&sr=c&sp=rl&sig=Opj7crwJahAdOHiwtCYnR%2FYdX7nCVYcw%2FKkyCgHquaM%3D>)
### Histogram

#### System.Tests.Perf_String.Replace_String(text: "This is a very nice sentence", oldValue: "nice", newValue: "bad")

```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 103.02587738588925 > 79.04393196166279.
IsChangePoint: Marked as a change because one of 5/26/2023 9:55:14 AM, 6/8/2023 5:31:08 AM, 6/14/2023 3:35:53 PM falls between 6/5/2023 10:43:22 AM and 6/14/2023 3:35:53 PM.
IsRegressionStdDev: Marked as regression because -6.95275929703907 (T) = (0 -93.03306473253484) / Math.Sqrt((15.875856829350282 / (12)) + (64.28241464298715 / (13))) is less than -2.0686576104106944 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (12) + (13) - 2, .025) and -0.23016574351153538 = (75.62644726796724 - 93.03306473253484) / 75.62644726796724 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.

```
### JIT Disasms



### 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

Name | Value
-- | --
Architecture | arm64
OS | Windows 10.0.25094
Queue | AmpereWindows
Baseline | [dd715a0747ebeb85a234c8abec7e01bb6652c8ce](https://github.com/dotnet/runtime/commit/dd715a0747ebeb85a234c8abec7e01bb6652c8ce)
Compare | [9bcf52342b5a6573ecd2c81fbfd541df0ebc42f4](https://github.com/dotnet/runtime/commit/9bcf52342b5a6573ecd2c81fbfd541df0ebc42f4)
Diff | [Diff](https://github.com/dotnet/runtime/compare/dd715a0747ebeb85a234c8abec7e01bb6652c8ce...9bcf52342b5a6573ecd2c81fbfd541df0ebc42f4)
Configs | CompilationMode:tiered, RunKind:micro


### Regressions in System.Text.Json.Tests.Perf_Get

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[GetUInt16 - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.25094/System.Text.Json.Tests.Perf_Get.GetUInt16.html>) | 1.28 μs | 1.42 μs | 1.11 | 0.67 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_15_2023/refs/heads/main_arm64_Windows%2010.0.25094_Regression/System.Text.Json.Tests.Perf_Get_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/06_15_2023/refs/heads/main_arm64_Windows%2010.0.25094_Regression/System.Text.Json.Tests.Perf_Get.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-4c54b1ca-0eb1-462c-9d95-cc3ca481b180da58a3ec2a1474aaf/2fa3e136-0b1a-43cf-8a10-fa580f8e3338.zip?sv=2021-08-06&se=2023-07-07T21%3A37%3A13Z&sr=c&sp=rl&sig=b1zRCKHt62oPiV6fXytgY7Vq3I%2F3Nb3R140kQirlK6Y%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-47f50acd-3cbf-4847-81be-b442e356f733a0d11fac47041c79e/40a8cce1-161f-4c79-b916-9f4ece960f85.zip?sv=2021-08-06&se=2023-07-09T02%3A14%3A11Z&sr=c&sp=rl&sig=Opj7crwJahAdOHiwtCYnR%2FYdX7nCVYcw%2FKkyCgHquaM%3D>)

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

<details>


### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-4c54b1ca-0eb1-462c-9d95-cc3ca481b180da58a3ec2a1474aaf/2fa3e136-0b1a-43cf-8a10-fa580f8e3338.zip?sv=2021-08-06&se=2023-07-07T21%3A37%3A13Z&sr=c&sp=rl&sig=b1zRCKHt62oPiV6fXytgY7Vq3I%2F3Nb3R140kQirlK6Y%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-47f50acd-3cbf-4847-81be-b442e356f733a0d11fac47041c79e/40a8cce1-161f-4c79-b916-9f4ece960f85.zip?sv=2021-08-06&se=2023-07-09T02%3A14%3A11Z&sr=c&sp=rl&sig=Opj7crwJahAdOHiwtCYnR%2FYdX7nCVYcw%2FKkyCgHquaM%3D>)
### Histogram

#### System.Text.Json.Tests.Perf_Get.GetUInt16

```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 1.4243274439721787 > 1.1817496321292034.
IsChangePoint: Marked as a change because one of 5/19/2023 4:22:12 AM, 5/26/2023 9:55:14 AM, 6/8/2023 5:31:08 AM, 6/14/2023 3:35:53 PM falls between 6/5/2023 10:43:22 AM and 6/14/2023 3:35:53 PM.
IsRegressionStdDev: Marked as regression because -7.208603559815226 (T) = (0 -1474.2133425890993) / Math.Sqrt((6162.145617042773 / (12)) + (15447.056533549852 / (13))) is less than -2.0686576104106944 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (12) + (13) - 2, .025) and -0.25268554569773194 = (1176.8423030442 - 1474.2133425890993) / 1176.8423030442 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.

```
### JIT Disasms



### 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>

Name	Value
Architecture	arm64
OS	Windows 10.0.25094
Queue	AmpereWindows
Baseline	dd715a0747ebeb85a234c8abec7e01bb6652c8ce
Compare	9bcf52342b5a6573ecd2c81fbfd541df0ebc42f4
Diff	Diff
Configs	CompilationMode:tiered, RunKind:micro

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
TryGetValue_17_Int_Int - Duration of single invocation	5.88 ns	7.40 ns	1.26	0.72	False
TryGetValue_3k_Int_Int - Duration of single invocation	5.61 ns	7.64 ns	1.36	0.68	False

[Perf] Windows/arm64: 5 Regressions on 6/8/2023 3:52:42 PM #18864

Description

Run Information

Regressions in System.Collections.Tests.DictionarySequentialKeys

Repro

Payloads

Payloads

Histogram

System.Collections.Tests.DictionarySequentialKeys.TryGetValue_17_Int_Int

Description of detection logic

JIT Disasms

System.Collections.Tests.DictionarySequentialKeys.TryGetValue_3k_Int_Int

Description of detection logic

JIT Disasms

Docs

Run Information

Regressions in System.Buffers.Text.Tests.Utf8ParserTests

Repro

Payloads

Payloads

Histogram

System.Buffers.Text.Tests.Utf8ParserTests.TryParseDateTimeOffset(value: 12/30/2017 3:45:22 AM -08:00)

Description of detection logic

JIT Disasms

Docs

Run Information

Regressions in System.Tests.Perf_String

Repro

Payloads

Payloads

Histogram

System.Tests.Perf_String.Replace_String(text: "This is a very nice sentence", oldValue: "nice", newValue: "bad")

Description of detection logic

JIT Disasms

Docs

Run Information

Regressions in System.Text.Json.Tests.Perf_Get

Repro

Payloads

Payloads

Histogram

System.Text.Json.Tests.Perf_Get.GetUInt16

Description of detection logic

JIT Disasms

Docs

Metadata

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