Regressions in System.Globalization.Tests.StringSearch

### Run Information

Architecture | arm64
-- | --
OS | Windows 10.0.19041
Baseline | [4820105ba85531da5b388e7b2e98fdcdae9ced07](https://github.com/dotnet/runtime/commit/4820105ba85531da5b388e7b2e98fdcdae9ced07)
Compare | [2b1f57e08b26879e4fa99670df078b77c848d9e0](https://github.com/dotnet/runtime/commit/2b1f57e08b26879e4fa99670df078b77c848d9e0)
Diff | [Diff](https://github.com/dotnet/runtime/compare/4820105ba85531da5b388e7b2e98fdcdae9ced07...2b1f57e08b26879e4fa99670df078b77c848d9e0)


### Regressions in System.Globalization.Tests.StringSearch

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[IsPrefix_DifferentFirstChar - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.Globalization.Tests.StringSearch.IsPrefix_DifferentFirstChar(Options%3a%20(en-US%2c%20OrdinalIgnoreCase%2c%20False)).html>) | 6.07 ns | 9.74 ns | 1.60 | 0.32 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_17_2022/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Globalization.Tests.StringSearch_1.png>)
[Test Report](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/11_17_2022/refs/heads/main_arm64_Windows%2010.0.19041_Regression/System.Globalization.Tests.StringSearch.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Globalization.Tests.StringSearch*'
```

### Related Issues

#### Regressions

* [[Perf] Linux/arm64: 1 Regression on 11/11/2022 1:18:55 PM](<https://github.com/dotnet/perf-autofiling-issues/issues/9844>)
#### Improvements
* [[Perf] Linux/arm64: 3 Improvements on 11/11/2022 1:18:55 PM](<https://github.com/dotnet/perf-autofiling-issues/issues/9846>)

<details>

### Payloads

[Baseline](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-b418f36d-7a9b-418c-9cbe-eb5a5f9fc258a2878d9723f456cbe/d90acd97-b207-4546-a503-94adbb997dad.zip?sv=2021-08-06&se=2022-12-11T04%3A22%3A22Z&sr=c&sp=rl&sig=cH80PIcp9tCp%2FUc8HZI%2FUMeV8J%2BpfSspzakUQgNepAg%3D>)
[Compare](<https://helixdi107v0xdeko0k025g8.blob.core.windows.net/helix-job-4ab0581a-7a71-4d0f-a03c-3176f51f21eb8ec2a9b2a8e42f08a/c0a49253-9a12-4841-bea3-85a727b17577.zip?sv=2021-08-06&se=2022-12-11T20%3A42%3A03Z&sr=c&sp=rl&sig=v8DL1rJW0PQBTeYITiMyj31drq5UdpaAmPJPn7DjnXI%3D>)
### Histogram

### Edge Detector Info

[Collection Data](<https://pvscmdupload.blob.core.windows.net/autofilereport/reports/11_17_2022/refs/heads/main_arm64_Windows 10.0.19041/System.Globalization.Tests.StringSearch.IsPrefix_DifferentFirstChar(Options- (en-US, OrdinalIgnoreCase, False)).txt?sv=2018-03-28&sr=c&sig=XY91HfJ33gUz%2F6reRXA6dLc1DMCMz2Jx1g9tAdCYuJo%3D&se=2022-12-08T12%3A14%3A05Z&sp=racwdl>)
#### System.Globalization.Tests.StringSearch.IsPrefix_DifferentFirstChar(Options: (en-US, OrdinalIgnoreCase, False))

```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.
IsRegressionWindowed: Marked as regression because 9.739572823923629 > 6.5487494770685135.
IsChangePoint: Marked as a change because one of 8/17/2022 3:53:31 PM, 11/11/2022 8:39:50 AM, 11/17/2022 1:45:21 AM falls between 11/8/2022 10:18:07 AM and 11/17/2022 1:45:21 AM.
IsRegressionStdDev: Marked as regression because -20.734846741647367 (T) = (0 -9.442781279773007) / Math.Sqrt((0.08514831912942529 / (19)) + (0.29674831130818136 / (17))) is less than -2.0322445093148245 = MathNet.Numerics.Distributions.StudentT.InvCDF(0, 1, (19) + (17) - 2, .025) and -0.48198912743797667 = (6.371694032666377 - 9.442781279773007) / 6.371694032666377 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.
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>


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Regressions in System.Globalization.Tests.StringSearch #78512

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