[Perf] Changes at 7/8/2021 3:39:38 PM

### Run Information

Architecture | x64
-- | --
OS | ubuntu 18.04
Baseline | [a48a11b1c1a4d0189047d142090b68563a94c590](https://github.com/dotnet/runtime/commit/a48a11b1c1a4d0189047d142090b68563a94c590)
Compare | [ab64ce5f71479549222c99da3a15fd56f8328fe4](https://github.com/dotnet/runtime/commit/ab64ce5f71479549222c99da3a15fd56f8328fe4)
Diff | [Diff](https://github.com/dotnet/runtime/compare/a48a11b1c1a4d0189047d142090b68563a94c590...ab64ce5f71479549222c99da3a15fd56f8328fe4)


### Regressions 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
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[WriteAsync - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.IO.Tests.Perf_FileStream.WriteAsync(fileSize%3a%201048576%2c%20userBufferSize%3a%20512%2c%20options%3a%20Asynchronous).html>) | 5.04 ms | 6.78 ms | 1.35 | 0.40 | False | | |
[FlushAsync - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.IO.Tests.Perf_FileStream.FlushAsync(fileSize%3a%201024%2c%20options%3a%20None).html>) | 1.28 ms | 2.17 ms | 1.69 | 0.12 | True | | |
[FlushAsync - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.IO.Tests.Perf_FileStream.FlushAsync(fileSize%3a%201024%2c%20options%3a%20Asynchronous).html>) | 1.27 ms | 2.14 ms | 1.69 | 0.12 | True | | |
[SeekBackward - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.IO.Tests.Perf_FileStream.SeekBackward(fileSize%3a%201024%2c%20options%3a%20Asynchronous).html>) | 383.47 μs | 461.94 μs | 1.20 | 0.44 | False | | |
[LockUnlock - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.IO.Tests.Perf_FileStream.LockUnlock(fileSize%3a%201024%2c%20options%3a%20Asynchronous).html>) | 5.33 μs | 5.77 μs | 1.08 | 0.31 | False | | |
[ReadAsync - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.IO.Tests.Perf_FileStream.ReadAsync(fileSize%3a%201048576%2c%20userBufferSize%3a%20512%2c%20options%3a%20Asynchronous).html>) | 464.34 μs | 537.81 μs | 1.16 | 0.03 | True | | |
[SeekBackward - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.IO.Tests.Perf_FileStream.SeekBackward(fileSize%3a%201024%2c%20options%3a%20None).html>) | 381.56 μs | 465.12 μs | 1.22 | 0.48 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/07_13_2021/refs/heads/main_x64_ubuntu%2018.04_Regression/System.IO.Tests.Perf_FileStream_1.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/07_13_2021/refs/heads/main_x64_ubuntu%2018.04_Regression/System.IO.Tests.Perf_FileStream_2.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/07_13_2021/refs/heads/main_x64_ubuntu%2018.04_Regression/System.IO.Tests.Perf_FileStream_3.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/07_13_2021/refs/heads/main_x64_ubuntu%2018.04_Regression/System.IO.Tests.Perf_FileStream_4.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/07_13_2021/refs/heads/main_x64_ubuntu%2018.04_Regression/System.IO.Tests.Perf_FileStream_5.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/07_13_2021/refs/heads/main_x64_ubuntu%2018.04_Regression/System.IO.Tests.Perf_FileStream_6.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/07_13_2021/refs/heads/main_x64_ubuntu%2018.04_Regression/System.IO.Tests.Perf_FileStream_7.png>)
[Historical Data in Reporting System](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/07_13_2021/refs/heads/main_x64_ubuntu%2018.04_Regression/System.IO.Tests.Perf_FileStream.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f netcoreapp5.0 --filter 'System.IO.Tests.Perf_FileStream*'
```
<details>

### Payloads

[Baseline](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-df37ebf4-de9d-4bfb-a210-58eb78c19e1f9419f6d43334f37ae/f2084977-97b0-4596-86b2-0c43115b39ed.zip?sv=2019-07-07&se=2021-08-07T12%3A19%3A13Z&sr=c&sp=rl&sig=wqftMiWOhdEt6koQXv%2BYRLDusLEIuYmlGa8W7ZsecZo%3D>)
[Compare](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-295927a5-ed40-4282-ab24-624754524b514784a843ac94ee08b/bfd4a2c7-2ca1-4152-93d9-416e73a5db62.zip?sv=2019-07-07&se=2021-08-07T19%3A27%3A39Z&sr=c&sp=rl&sig=UNEypLyRHMb8KsxbQAKInUwp3sgDVJbCJEFYQTKQeuA%3D>)

### Histogram
#### System.IO.Tests.Perf_FileStream.WriteAsync(fileSize: 1048576, userBufferSize: 512, options: Asynchronous)

```log

```
#### System.IO.Tests.Perf_FileStream.FlushAsync(fileSize: 1024, options: None)

```log

```
#### System.IO.Tests.Perf_FileStream.FlushAsync(fileSize: 1024, options: Asynchronous)

```log

```
#### System.IO.Tests.Perf_FileStream.SeekBackward(fileSize: 1024, options: Asynchronous)

```log

```
#### System.IO.Tests.Perf_FileStream.LockUnlock(fileSize: 1024, options: Asynchronous)

```log

```
#### System.IO.Tests.Perf_FileStream.ReadAsync(fileSize: 1048576, userBufferSize: 512, options: Asynchronous)

```log

```
#### System.IO.Tests.Perf_FileStream.SeekBackward(fileSize: 1024, 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 | x64
-- | --
OS | ubuntu 18.04
Baseline | [a48a11b1c1a4d0189047d142090b68563a94c590](https://github.com/dotnet/runtime/commit/a48a11b1c1a4d0189047d142090b68563a94c590)
Compare | [ab64ce5f71479549222c99da3a15fd56f8328fe4](https://github.com/dotnet/runtime/commit/ab64ce5f71479549222c99da3a15fd56f8328fe4)
Diff | [Diff](https://github.com/dotnet/runtime/compare/a48a11b1c1a4d0189047d142090b68563a94c590...ab64ce5f71479549222c99da3a15fd56f8328fe4)


### Regressions in System.Tests.Perf_Int32

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[Parse - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Tests.Perf_Int32.Parse(value%3a%20%22-2147483648%22).html>) | 17.34 ns | 20.78 ns | 1.20 | 0.10 | False | | |
[ParseSpan - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Tests.Perf_Int32.ParseSpan(value%3a%20%22-2147483648%22).html>) | 17.72 ns | 20.85 ns | 1.18 | 0.14 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/07_13_2021/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Tests.Perf_Int32_1.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/07_13_2021/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Tests.Perf_Int32_2.png>)
[Historical Data in Reporting System](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/07_13_2021/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Tests.Perf_Int32.html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f netcoreapp5.0 --filter 'System.Tests.Perf_Int32*'
```
<details>

### Payloads

[Baseline](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-df37ebf4-de9d-4bfb-a210-58eb78c19e1f9419f6d43334f37ae/f2084977-97b0-4596-86b2-0c43115b39ed.zip?sv=2019-07-07&se=2021-08-07T12%3A19%3A13Z&sr=c&sp=rl&sig=wqftMiWOhdEt6koQXv%2BYRLDusLEIuYmlGa8W7ZsecZo%3D>)
[Compare](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-295927a5-ed40-4282-ab24-624754524b514784a843ac94ee08b/bfd4a2c7-2ca1-4152-93d9-416e73a5db62.zip?sv=2019-07-07&se=2021-08-07T19%3A27%3A39Z&sr=c&sp=rl&sig=UNEypLyRHMb8KsxbQAKInUwp3sgDVJbCJEFYQTKQeuA%3D>)

### Histogram
#### System.Tests.Perf_Int32.Parse(value: "-2147483648")

```log

```
#### System.Tests.Perf_Int32.ParseSpan(value: "-2147483648")

```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 | x64
-- | --
OS | ubuntu 18.04
Baseline | [a48a11b1c1a4d0189047d142090b68563a94c590](https://github.com/dotnet/runtime/commit/a48a11b1c1a4d0189047d142090b68563a94c590)
Compare | [ab64ce5f71479549222c99da3a15fd56f8328fe4](https://github.com/dotnet/runtime/commit/ab64ce5f71479549222c99da3a15fd56f8328fe4)
Diff | [Diff](https://github.com/dotnet/runtime/compare/a48a11b1c1a4d0189047d142090b68563a94c590...ab64ce5f71479549222c99da3a15fd56f8328fe4)


### Regressions in System.Memory.Span&lt;Int32&gt;

Benchmark | Baseline | Test | Test/Base | Test Quality | Edge Detector | Baseline IR | Compare IR | IR Ratio | Baseline ETL | Compare ETL
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --
[EndsWith - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Memory.Span(Int32).EndsWith(Size%3a%20512).html>) | 18.04 ns | 20.07 ns | 1.11 | 0.03 | False | | |
[StartsWith - Duration of single invocation](<https://pvscmdupload.blob.core.windows.net/reports/allTestHistory/refs/heads/main_x64_ubuntu 18.04/System.Memory.Span(Int32).StartsWith(Size%3a%20512).html>) | 17.65 ns | 19.54 ns | 1.11 | 0.03 | False | | |

![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/07_13_2021/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Memory.Span(Int32)_1.png>)
![graph](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/07_13_2021/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Memory.Span(Int32)_2.png>)
[Historical Data in Reporting System](<https://pvscmdupload.blob.core.windows.net/autofilereport/autofilereports/07_13_2021/refs/heads/main_x64_ubuntu%2018.04_Regression/System.Memory.Span(Int32).html>)

### Repro

```cmd
git clone https://github.com/dotnet/performance.git
python3 .\performance\scripts\benchmarks_ci.py -f netcoreapp5.0 --filter 'System.Memory.Span&lt;Int32&gt;*'
```
<details>

### Payloads

[Baseline](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-df37ebf4-de9d-4bfb-a210-58eb78c19e1f9419f6d43334f37ae/f2084977-97b0-4596-86b2-0c43115b39ed.zip?sv=2019-07-07&se=2021-08-07T12%3A19%3A13Z&sr=c&sp=rl&sig=wqftMiWOhdEt6koQXv%2BYRLDusLEIuYmlGa8W7ZsecZo%3D>)
[Compare](<https://helixdi8s23ayyeko0k025g8.blob.core.windows.net/helix-job-295927a5-ed40-4282-ab24-624754524b514784a843ac94ee08b/bfd4a2c7-2ca1-4152-93d9-416e73a5db62.zip?sv=2019-07-07&se=2021-08-07T19%3A27%3A39Z&sr=c&sp=rl&sig=UNEypLyRHMb8KsxbQAKInUwp3sgDVJbCJEFYQTKQeuA%3D>)

### Histogram
#### System.Memory.Span&lt;Int32&gt;.EndsWith(Size: 512)

```log

```
#### System.Memory.Span&lt;Int32&gt;.StartsWith(Size: 512)

```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>




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[Perf] Changes at 7/8/2021 3:39:38 PM #7367

Run Information

Regressions in System.IO.Tests.Perf_FileStream

Repro

Payloads

Histogram

System.IO.Tests.Perf_FileStream.WriteAsync(fileSize: 1048576, userBufferSize: 512, options: Asynchronous)

System.IO.Tests.Perf_FileStream.FlushAsync(fileSize: 1024, options: None)

System.IO.Tests.Perf_FileStream.FlushAsync(fileSize: 1024, options: Asynchronous)

System.IO.Tests.Perf_FileStream.SeekBackward(fileSize: 1024, options: Asynchronous)

System.IO.Tests.Perf_FileStream.LockUnlock(fileSize: 1024, options: Asynchronous)

System.IO.Tests.Perf_FileStream.ReadAsync(fileSize: 1048576, userBufferSize: 512, options: Asynchronous)

System.IO.Tests.Perf_FileStream.SeekBackward(fileSize: 1024, options: None)

Docs

Regressions in System.Tests.Perf_Int32

Repro

Payloads

Histogram

System.Tests.Perf_Int32.Parse(value: "-2147483648")

System.Tests.Perf_Int32.ParseSpan(value: "-2147483648")

Docs

Run Information

Regressions in System.Memory.Span<Int32>

Repro

Payloads

Histogram

System.Memory.Span<Int32>.EndsWith(Size: 512)

System.Memory.Span<Int32>.StartsWith(Size: 512)

Docs

Metadata

Assignees

Labels

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Architecture	x64
OS	ubuntu 18.04
Baseline	a48a11b1c1a4d0189047d142090b68563a94c590
Compare	ab64ce5f71479549222c99da3a15fd56f8328fe4
Diff	Diff

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector
WriteAsync - Duration of single invocation	5.04 ms	6.78 ms	1.35	0.40	False
FlushAsync - Duration of single invocation	1.28 ms	2.17 ms	1.69	0.12	True
FlushAsync - Duration of single invocation	1.27 ms	2.14 ms	1.69	0.12	True
SeekBackward - Duration of single invocation	383.47 μs	461.94 μs	1.20	0.44	False
LockUnlock - Duration of single invocation	5.33 μs	5.77 μs	1.08	0.31	False
ReadAsync - Duration of single invocation	464.34 μs	537.81 μs	1.16	0.03	True
SeekBackward - Duration of single invocation	381.56 μs	465.12 μs	1.22	0.48	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
Parse - Duration of single invocation	17.34 ns	20.78 ns	1.20	0.10	False
ParseSpan - Duration of single invocation	17.72 ns	20.85 ns	1.18	0.14	False

Benchmark	Baseline	Test	Test/Base	Test Quality	Edge Detector	Baseline IR	Compare IR	IR Ratio	Baseline ETL	Compare ETL
EndsWith - Duration of single invocation	18.04 ns	20.07 ns	1.11	0.03	False
StartsWith - Duration of single invocation	17.65 ns	19.54 ns	1.11	0.03	False

[Perf] Changes at 7/8/2021 3:39:38 PM #7367

Description

Run Information

Regressions in System.IO.Tests.Perf_FileStream

Repro

Payloads

Histogram

System.IO.Tests.Perf_FileStream.WriteAsync(fileSize: 1048576, userBufferSize: 512, options: Asynchronous)

System.IO.Tests.Perf_FileStream.FlushAsync(fileSize: 1024, options: None)

System.IO.Tests.Perf_FileStream.FlushAsync(fileSize: 1024, options: Asynchronous)

System.IO.Tests.Perf_FileStream.SeekBackward(fileSize: 1024, options: Asynchronous)

System.IO.Tests.Perf_FileStream.LockUnlock(fileSize: 1024, options: Asynchronous)

System.IO.Tests.Perf_FileStream.ReadAsync(fileSize: 1048576, userBufferSize: 512, options: Asynchronous)

System.IO.Tests.Perf_FileStream.SeekBackward(fileSize: 1024, options: None)

Docs

Regressions in System.Tests.Perf_Int32

Repro

Payloads

Histogram

System.Tests.Perf_Int32.Parse(value: "-2147483648")

System.Tests.Perf_Int32.ParseSpan(value: "-2147483648")

Docs

Run Information

Regressions in System.Memory.Span<Int32>

Repro

Payloads

Histogram

System.Memory.Span<Int32>.EndsWith(Size: 512)

System.Memory.Span<Int32>.StartsWith(Size: 512)

Docs

Metadata

Metadata

Assignees

Labels

Projects

Milestone

Relationships

Development

Issue actions