[Perf] Changes at 9/9/2021 7:05:50 PM

### Run Information

Architecture | arm64
-- | --
OS | Windows 10.0.19041
Baseline | [b0aa6f4928ae968024ca28f52b08a2353f87d0bc](https://github.com/dotnet/runtime/commit/b0aa6f4928ae968024ca28f52b08a2353f87d0bc)
Compare | [1dc8dfa0058396495203e18ddc7f8a632d72c165](https://github.com/dotnet/runtime/commit/1dc8dfa0058396495203e18ddc7f8a632d72c165)
Diff | [Diff](https://github.com/dotnet/runtime/compare/b0aa6f4928ae968024ca28f52b08a2353f87d0bc...1dc8dfa0058396495203e18ddc7f8a632d72c165)


### Improvemnts in System.Buffers.Tests.RentReturnArrayPoolTests&lt;Object&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[MultipleSerial - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.Buffers.Tests.RentReturnArrayPoolTests(Object).MultipleSerial(RentalSize%3a%204096%2c%20ManipulateArray%3a%20True%2c%20Async%3a%20True%2c%20UseSharedPool%3a%20True).html>) | 43.89 μs | 32.79 μs | 0.75 | 0.01 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/09_15_2021/refs/heads/main_arm64_Windows%2010.0.19041_Improvement/System.Buffers.Tests.RentReturnArrayPoolTests(Object)_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/09_15_2021/refs/heads/main_arm64_Windows%2010.0.19041_Improvement/System.Buffers.Tests.RentReturnArrayPoolTests(Object).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Buffers.Tests.RentReturnArrayPoolTests&lt;Object&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-a2cef8f8-6d2a-40b6-8f29-5f079379dacbfacea9767ef4c2699/7cb78f80-77d4-405e-88b1-dae4572e5c53.zip?sv=2019-07-07&se=2021-10-09T07%3A55%3A41Z&sr=c&sp=rl&sig=HEFI2HNuab4WhGcDgW41ITgbRBqHL036SghsETJOTtk%3D>)
[Compare](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-d1ae4c71-ff2a-4a6b-890e-b424785f459ff1c07556df24a78af/ca0fb65f-0331-4f33-a9c3-f1ca523d19d5.zip?sv=2019-07-07&se=2021-10-10T02%3A00%3A30Z&sr=c&sp=rl&sig=3hGCRyYNImNVLxsxq0UQf6LnMU093pi7Vjsfxl3QVZw%3D>)
### Histogram

#### System.Buffers.Tests.RentReturnArrayPoolTests&lt;Object&gt;.MultipleSerial(RentalSize: 4096, ManipulateArray: True, Async: True, UseSharedPool: True)

```log

```


### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>
### Run Information

Architecture | arm64
-- | --
OS | Windows 10.0.19041
Baseline | [b0aa6f4928ae968024ca28f52b08a2353f87d0bc](https://github.com/dotnet/runtime/commit/b0aa6f4928ae968024ca28f52b08a2353f87d0bc)
Compare | [1dc8dfa0058396495203e18ddc7f8a632d72c165](https://github.com/dotnet/runtime/commit/1dc8dfa0058396495203e18ddc7f8a632d72c165)
Diff | [Diff](https://github.com/dotnet/runtime/compare/b0aa6f4928ae968024ca28f52b08a2353f87d0bc...1dc8dfa0058396495203e18ddc7f8a632d72c165)


### Improvemnts in System.IO.Tests.Perf_RandomAccess

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[ReadScatterAsync - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.IO.Tests.Perf_RandomAccess.ReadScatterAsync(fileSize%3a%201048576%2c%20buffersSize%3a%2016384%2c%20options%3a%20Asynchronous).html>) | 5.54 ms | 4.76 ms | 0.86 | 0.21 | False | | |
[ReadAsync - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.IO.Tests.Perf_RandomAccess.ReadAsync(fileSize%3a%201048576%2c%20bufferSize%3a%204096%2c%20options%3a%20Asynchronous).html>) | 5.35 ms | 4.71 ms | 0.88 | 0.26 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/09_15_2021/refs/heads/main_arm64_Windows%2010.0.19041_Improvement/System.IO.Tests.Perf_RandomAccess_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/09_15_2021/refs/heads/main_arm64_Windows%2010.0.19041_Improvement/System.IO.Tests.Perf_RandomAccess_2.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/09_15_2021/refs/heads/main_arm64_Windows%2010.0.19041_Improvement/System.IO.Tests.Perf_RandomAccess.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.IO.Tests.Perf_RandomAccess*'
```
<details>

### Payloads

[Baseline](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-a2cef8f8-6d2a-40b6-8f29-5f079379dacbfacea9767ef4c2699/7cb78f80-77d4-405e-88b1-dae4572e5c53.zip?sv=2019-07-07&se=2021-10-09T07%3A55%3A41Z&sr=c&sp=rl&sig=HEFI2HNuab4WhGcDgW41ITgbRBqHL036SghsETJOTtk%3D>)
[Compare](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-d1ae4c71-ff2a-4a6b-890e-b424785f459ff1c07556df24a78af/ca0fb65f-0331-4f33-a9c3-f1ca523d19d5.zip?sv=2019-07-07&se=2021-10-10T02%3A00%3A30Z&sr=c&sp=rl&sig=3hGCRyYNImNVLxsxq0UQf6LnMU093pi7Vjsfxl3QVZw%3D>)
### Histogram

#### System.IO.Tests.Perf_RandomAccess.ReadScatterAsync(fileSize: 1048576, buffersSize: 16384, options: Asynchronous)

```log

```
#### System.IO.Tests.Perf_RandomAccess.ReadAsync(fileSize: 1048576, bufferSize: 4096, options: Asynchronous)

```log

```


### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>


### Run Information

Architecture | arm64
-- | --
OS | Windows 10.0.19041
Baseline | [b0aa6f4928ae968024ca28f52b08a2353f87d0bc](https://github.com/dotnet/runtime/commit/b0aa6f4928ae968024ca28f52b08a2353f87d0bc)
Compare | [1dc8dfa0058396495203e18ddc7f8a632d72c165](https://github.com/dotnet/runtime/commit/1dc8dfa0058396495203e18ddc7f8a632d72c165)
Diff | [Diff](https://github.com/dotnet/runtime/compare/b0aa6f4928ae968024ca28f52b08a2353f87d0bc...1dc8dfa0058396495203e18ddc7f8a632d72c165)


### Improvemnts in System.IO.Tests.Perf_FileStream

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[AppendAsync - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.IO.Tests.Perf_FileStream.AppendAsync(fileSize%3a%201048576%2c%20userBufferSize%3a%204096%2c%20options%3a%20DeleteOnClose%2c%20Asynchronous).html>) | 8.40 ms | 6.97 ms | 0.83 | 0.11 | False | | |
[ReadAsync - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.IO.Tests.Perf_FileStream.ReadAsync(fileSize%3a%20104857600%2c%20userBufferSize%3a%204096%2c%20options%3a%20Asynchronous).html>) | 631.45 ms | 531.07 ms | 0.84 | 0.11 | False | | |
[ReadAsync - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.IO.Tests.Perf_FileStream.ReadAsync(fileSize%3a%20104857600%2c%20userBufferSize%3a%204096%2c%20options%3a%20None).html>) | 485.21 ms | 181.42 ms | 0.37 | 0.41 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/09_15_2021/refs/heads/main_arm64_Windows%2010.0.19041_Improvement/System.IO.Tests.Perf_FileStream_1.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/09_15_2021/refs/heads/main_arm64_Windows%2010.0.19041_Improvement/System.IO.Tests.Perf_FileStream_2.png>)
![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/09_15_2021/refs/heads/main_arm64_Windows%2010.0.19041_Improvement/System.IO.Tests.Perf_FileStream_3.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/09_15_2021/refs/heads/main_arm64_Windows%2010.0.19041_Improvement/System.IO.Tests.Perf_FileStream.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.IO.Tests.Perf_FileStream*'
```
<details>

### Payloads

[Baseline](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-a2cef8f8-6d2a-40b6-8f29-5f079379dacbfacea9767ef4c2699/7cb78f80-77d4-405e-88b1-dae4572e5c53.zip?sv=2019-07-07&se=2021-10-09T07%3A55%3A41Z&sr=c&sp=rl&sig=HEFI2HNuab4WhGcDgW41ITgbRBqHL036SghsETJOTtk%3D>)
[Compare](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-d1ae4c71-ff2a-4a6b-890e-b424785f459ff1c07556df24a78af/ca0fb65f-0331-4f33-a9c3-f1ca523d19d5.zip?sv=2019-07-07&se=2021-10-10T02%3A00%3A30Z&sr=c&sp=rl&sig=3hGCRyYNImNVLxsxq0UQf6LnMU093pi7Vjsfxl3QVZw%3D>)
### Histogram

#### System.IO.Tests.Perf_FileStream.AppendAsync(fileSize: 1048576, userBufferSize: 4096, options: DeleteOnClose, Asynchronous)

```log

```
#### System.IO.Tests.Perf_FileStream.ReadAsync(fileSize: 104857600, userBufferSize: 4096, options: Asynchronous)

```log

```
#### System.IO.Tests.Perf_FileStream.ReadAsync(fileSize: 104857600, userBufferSize: 4096, options: None)

```log

```


### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>


### Run Information

Architecture | arm64
-- | --
OS | Windows 10.0.19041
Baseline | [b0aa6f4928ae968024ca28f52b08a2353f87d0bc](https://github.com/dotnet/runtime/commit/b0aa6f4928ae968024ca28f52b08a2353f87d0bc)
Compare | [1dc8dfa0058396495203e18ddc7f8a632d72c165](https://github.com/dotnet/runtime/commit/1dc8dfa0058396495203e18ddc7f8a632d72c165)
Diff | [Diff](https://github.com/dotnet/runtime/compare/b0aa6f4928ae968024ca28f52b08a2353f87d0bc...1dc8dfa0058396495203e18ddc7f8a632d72c165)


### Improvemnts in System.Buffers.Tests.RentReturnArrayPoolTests&lt;Byte&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[MultipleSerial - Duration of single invocation](<https://pvscmdupload.z22.web.core.windows.net/reports/allTestHistory/refs/heads/main_arm64_Windows 10.0.19041/System.Buffers.Tests.RentReturnArrayPoolTests(Byte).MultipleSerial(RentalSize%3a%204096%2c%20ManipulateArray%3a%20True%2c%20Async%3a%20True%2c%20UseSharedPool%3a%20False).html>) | 32.12 μs | 22.46 μs | 0.70 | 0.13 | False | | |

![graph](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/09_15_2021/refs/heads/main_arm64_Windows%2010.0.19041_Improvement/System.Buffers.Tests.RentReturnArrayPoolTests(Byte)_1.png>)
[Test Report](<https://pvscmdupload.z22.web.core.windows.net/autofilereport/autofilereports/09_15_2021/refs/heads/main_arm64_Windows%2010.0.19041_Improvement/System.Buffers.Tests.RentReturnArrayPoolTests(Byte).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net6.0 --filter 'System.Buffers.Tests.RentReturnArrayPoolTests&lt;Byte&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-a2cef8f8-6d2a-40b6-8f29-5f079379dacbfacea9767ef4c2699/7cb78f80-77d4-405e-88b1-dae4572e5c53.zip?sv=2019-07-07&se=2021-10-09T07%3A55%3A41Z&sr=c&sp=rl&sig=HEFI2HNuab4WhGcDgW41ITgbRBqHL036SghsETJOTtk%3D>)
[Compare](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-d1ae4c71-ff2a-4a6b-890e-b424785f459ff1c07556df24a78af/ca0fb65f-0331-4f33-a9c3-f1ca523d19d5.zip?sv=2019-07-07&se=2021-10-10T02%3A00%3A30Z&sr=c&sp=rl&sig=3hGCRyYNImNVLxsxq0UQf6LnMU093pi7Vjsfxl3QVZw%3D>)
### Histogram

#### System.Buffers.Tests.RentReturnArrayPoolTests&lt;Byte&gt;.MultipleSerial(RentalSize: 4096, ManipulateArray: True, Async: True, UseSharedPool: False)

```log

```


### Docs

[Profiling workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/profiling-workflow-dotnet-runtime.md)
[Benchmarking workflow for dotnet/runtime repository](https://github.com/dotnet/performance/blob/master/docs/benchmarking-workflow-dotnet-runtime.md)

</details>




Architecture	arm64
OS	Windows 10.0.19041
Baseline	b0aa6f4928ae968024ca28f52b08a2353f87d0bc
Compare	1dc8dfa0058396495203e18ddc7f8a632d72c165
Diff	Diff

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
ReadScatterAsync - Duration of single invocation	5.54 ms	4.76 ms	0.86	0.21	False
ReadAsync - Duration of single invocation	5.35 ms	4.71 ms	0.88	0.26	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
AppendAsync - Duration of single invocation	8.40 ms	6.97 ms	0.83	0.11	False
ReadAsync - Duration of single invocation	631.45 ms	531.07 ms	0.84	0.11	False
ReadAsync - Duration of single invocation	485.21 ms	181.42 ms	0.37	0.41	False

[Perf] Changes at 9/9/2021 7:05:50 PM #1448

Description

Run Information

Improvemnts in System.Buffers.Tests.RentReturnArrayPoolTests<Object>

Repro

Payloads

Histogram

System.Buffers.Tests.RentReturnArrayPoolTests<Object>.MultipleSerial(RentalSize: 4096, ManipulateArray: True, Async: True, UseSharedPool: True)

Docs

Improvemnts in System.IO.Tests.Perf_RandomAccess

Repro

Payloads

Histogram

System.IO.Tests.Perf_RandomAccess.ReadScatterAsync(fileSize: 1048576, buffersSize: 16384, options: Asynchronous)

System.IO.Tests.Perf_RandomAccess.ReadAsync(fileSize: 1048576, bufferSize: 4096, options: Asynchronous)

Docs

Run Information

Improvemnts in System.IO.Tests.Perf_FileStream

Repro

Payloads

Histogram

System.IO.Tests.Perf_FileStream.AppendAsync(fileSize: 1048576, userBufferSize: 4096, options: DeleteOnClose, Asynchronous)

System.IO.Tests.Perf_FileStream.ReadAsync(fileSize: 104857600, userBufferSize: 4096, options: Asynchronous)

System.IO.Tests.Perf_FileStream.ReadAsync(fileSize: 104857600, userBufferSize: 4096, options: None)

Docs

Run Information

Improvemnts in System.Buffers.Tests.RentReturnArrayPoolTests<Byte>

Repro

Payloads

Histogram

System.Buffers.Tests.RentReturnArrayPoolTests<Byte>.MultipleSerial(RentalSize: 4096, ManipulateArray: True, Async: True, UseSharedPool: False)

Docs

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