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performanceautofiler bot opened this issue Jun 25, 2024 · 7 comments
Open

[Perf] Windows/x64: 33 Regressions on 6/21/2024 6:31:57 PM #103972

performanceautofiler bot opened this issue Jun 25, 2024 · 7 comments
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@amanasifkhalid
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arch-x64 area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI os-windows Priority:2 Work that is important, but not critical for the release runtime-coreclr specific to the CoreCLR runtime tenet-performance Performance related issue tenet-performance-benchmarks Issue from performance benchmark
Milestone
Future

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Run Information

Name Value
Architecture x64
OS Windows 10.0.22631
Queue ViperWindows
Baseline 8923c96baa4ca6f5540ca185a3e614a96fe63b34
Compare 0262a63be0f560fa902b1e31e9a10760e466352d
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Regressions in System.Text.Json.Tests.Utf8JsonReaderCommentsTests

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
69.18 ns 81.88 ns 1.18 0.08 False
110.55 ns 125.75 ns 1.14 0.08 False

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graph
Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Text.Json.Tests.Utf8JsonReaderCommentsTests*'

System.Text.Json.Tests.Utf8JsonReaderCommentsTests.Utf8JsonReaderCommentParsing(CommentHandling: Skip, SegmentSize: 100, TestCase: ShortMultiLine)

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System.Text.Json.Tests.Utf8JsonReaderCommentsTests.Utf8JsonReaderCommentParsing(CommentHandling: Skip, SegmentSize: 0, TestCase: LongSingleLine)

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JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

Run Information

Name Value
Architecture x64
OS Windows 10.0.22631
Queue ViperWindows
Baseline 8923c96baa4ca6f5540ca185a3e614a96fe63b34
Compare 0262a63be0f560fa902b1e31e9a10760e466352d
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Regressions in System.Linq.Tests.Perf_Enumerable

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
104.29 ns 118.45 ns 1.14 0.15 False
29.31 ns 39.29 ns 1.34 0.11 False
38.40 ns 62.93 ns 1.64 0.03 True
108.24 ns 122.41 ns 1.13 0.05 True
102.96 ns 125.29 ns 1.22 0.09 False
101.79 ns 124.12 ns 1.22 0.16 False
102.43 ns 121.89 ns 1.19 0.04 False
102.21 ns 117.97 ns 1.15 0.12 False
334.88 ns 355.25 ns 1.06 0.05 False
119.81 ns 131.68 ns 1.10 0.08 False
129.29 ns 147.50 ns 1.14 0.01 False
103.39 ns 121.52 ns 1.18 0.22 False
63.77 ns 89.59 ns 1.40 0.03 True
120.53 ns 135.08 ns 1.12 0.14 False
122.35 ns 143.10 ns 1.17 0.24 False
130.47 ns 148.53 ns 1.14 0.00 False
82.69 ns 109.31 ns 1.32 0.07 False
132.98 ns 153.08 ns 1.15 0.00 True
102.37 ns 122.38 ns 1.20 0.05 False
103.77 ns 126.73 ns 1.22 0.30 False
101.73 ns 119.91 ns 1.18 0.20 False

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Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

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

System.Linq.Tests.Perf_Enumerable.FirstWithPredicate_LastElementMatches(input: Array)

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System.Linq.Tests.Perf_Enumerable.ElementAt(input: IEnumerable)

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System.Linq.Tests.Perf_Enumerable.Count(input: IEnumerable)

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System.Linq.Tests.Perf_Enumerable.CastToSameType(input: IEnumerable)

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System.Linq.Tests.Perf_Enumerable.FirstWithPredicate_LastElementMatches(input: IEnumerable)

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System.Linq.Tests.Perf_Enumerable.AnyWithPredicate_LastElementMatches(input: Array)

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System.Linq.Tests.Perf_Enumerable.Sum(input: IEnumerable)

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System.Linq.Tests.Perf_Enumerable.All_AllElementsMatch(input: IEnumerable)

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System.Linq.Tests.Perf_Enumerable.Reverse(input: IEnumerable)

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System.Linq.Tests.Perf_Enumerable.Select(input: Array)

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System.Linq.Tests.Perf_Enumerable.AnyWithPredicate_LastElementMatches(input: List)

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System.Linq.Tests.Perf_Enumerable.SingleWithPredicate_LastElementMatches(input: Array)

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System.Linq.Tests.Perf_Enumerable.Repeat

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System.Linq.Tests.Perf_Enumerable.WhereFirst_LastElementMatches(input: IEnumerable)

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System.Linq.Tests.Perf_Enumerable.WhereAny_LastElementMatches(input: IEnumerable)

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System.Linq.Tests.Perf_Enumerable.FirstWithPredicate_LastElementMatches(input: List)

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System.Linq.Tests.Perf_Enumerable.Range

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System.Linq.Tests.Perf_Enumerable.SingleWithPredicate_LastElementMatches(input: List)

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System.Linq.Tests.Perf_Enumerable.Aggregate_Seed(input: IEnumerable)

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System.Linq.Tests.Perf_Enumerable.SingleWithPredicate_LastElementMatches(input: IEnumerable)

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System.Linq.Tests.Perf_Enumerable.AnyWithPredicate_LastElementMatches(input: IEnumerable)

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JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

Run Information

Name Value
Architecture x64
OS Windows 10.0.22631
Queue ViperWindows
Baseline 8923c96baa4ca6f5540ca185a3e614a96fe63b34
Compare 0262a63be0f560fa902b1e31e9a10760e466352d
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Regressions in System.Collections.IterateForEach<String>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
1.00 μs 1.26 μs 1.25 0.01 True
1.09 μs 1.44 μs 1.32 0.02 True
8.26 μs 14.23 μs 1.72 0.08 True
8.81 μs 12.91 μs 1.47 0.09 True
9.44 μs 13.60 μs 1.44 0.09 False

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Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.IterateForEach&lt;String&gt;*'

System.Collections.IterateForEach<String>.Stack(Size: 512)

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System.Collections.IterateForEach<String>.Queue(Size: 512)

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System.Collections.IterateForEach<String>.ImmutableSortedDictionary(Size: 512)

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System.Collections.IterateForEach<String>.ImmutableSortedSet(Size: 512)

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System.Collections.IterateForEach<String>.ImmutableList(Size: 512)

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JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

Run Information

Name Value
Architecture x64
OS Windows 10.0.22631
Queue ViperWindows
Baseline 8923c96baa4ca6f5540ca185a3e614a96fe63b34
Compare 0262a63be0f560fa902b1e31e9a10760e466352d
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Regressions in SciMark2.kernel

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
326.62 ms 388.15 ms 1.19 0.02 False
462.87 ms 512.19 ms 1.11 0.02 False

graph
graph
Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'SciMark2.kernel*'

SciMark2.kernel.benchSparseMult

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SciMark2.kernel.benchMonteCarlo

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Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

Run Information

Name Value
Architecture x64
OS Windows 10.0.22631
Queue ViperWindows
Baseline 8923c96baa4ca6f5540ca185a3e614a96fe63b34
Compare 0262a63be0f560fa902b1e31e9a10760e466352d
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Regressions in System.Collections.CtorFromCollection<Int32>

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
3.98 μs 7.22 μs 1.81 0.22 True
3.05 μs 6.16 μs 2.02 0.15 True

graph
graph
Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'System.Collections.CtorFromCollection&lt;Int32&gt;*'

System.Collections.CtorFromCollection<Int32>.ImmutableStack(Size: 512)

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System.Collections.CtorFromCollection<Int32>.ConcurrentStack(Size: 512)

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Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository
@performanceautofiler performanceautofiler bot added arch-x64 os-windows runtime-coreclr specific to the CoreCLR runtime untriaged New issue has not been triaged by the area owner labels Jun 25, 2024
@performanceautofiler PerformanceAutoFiler
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Run Information

Name Value
Architecture x64
OS Windows 10.0.22631
Queue ViperWindows
Baseline 8923c96baa4ca6f5540ca185a3e614a96fe63b34
Compare 0262a63be0f560fa902b1e31e9a10760e466352d
Diff Diff
Configs CompilationMode:tiered, RunKind:micro

Regressions in LinqBenchmarks

Benchmark Baseline Test Test/Base Test Quality Edge Detector Baseline IR Compare IR IR Ratio
369.44 ms 408.80 ms 1.11 0.45 False

graph
Test Report

Repro

General Docs link: https://github.com/dotnet/performance/blob/main/docs/benchmarking-workflow-dotnet-runtime.md

git clone https://github.com/dotnet/performance.git
py .\performance\scripts\benchmarks_ci.py -f net8.0 --filter 'LinqBenchmarks*'

LinqBenchmarks.Count00LinqMethodX

ETL Files

Histogram

JIT Disasms

Docs

Profiling workflow for dotnet/runtime repository
Benchmarking workflow for dotnet/runtime repository

@performanceautofiler performanceautofiler bot mentioned this issue Jun 25, 2024
Closed
@DrewScoggins DrewScoggins transferred this issue from dotnet/perf-autofiling-issues Jun 25, 2024
@ghost ghost added the area-System.Linq label Jun 25, 2024
@DrewScoggins DrewScoggins added tenet-performance Performance related issue tenet-performance-benchmarks Issue from performance benchmark and removed area-System.Linq labels Jun 25, 2024
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Seems to be related to #103785

@AndyAyersMS
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AndyAyersMS commented Jun 25, 2024 •
edited by DrewScoggins
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Regressions:

Improvements:

@AndyAyersMS AndyAyersMS mentioned this issue Jun 25, 2024
Merged
@jeffschwMSFT jeffschwMSFT added the area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI label Jul 1, 2024
@JulieLeeMSFT JulieLeeMSFT removed the untriaged New issue has not been triaged by the area owner label Jul 5, 2024
@JulieLeeMSFT JulieLeeMSFT added this to the 9.0.0 milestone Jul 5, 2024
@JulieLeeMSFT JulieLeeMSFT added the Priority:2 Work that is important, but not critical for the release label Jul 5, 2024
@amanasifkhalid amanasifkhalid mentioned this issue Jul 17, 2024
Closed
@AndyAyersMS
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Collated Regression Table

Notes Recent Score Orig Score arm64 ubuntu arm64 Windows x64 ubuntu x64 Windows amd64 Windows Benchmark
1.85 1.81 1.85
1.81		 System.Collections.CtorFromCollection(Int32).ImmutableStack(Size: 512)
1.73 1.72 1.73
1.72		 System.Collections.IterateForEach(String).ImmutableSortedDictionary(Size: 512)
1.59 1.60 1.59
1.60		 System.Collections.IterateForEachNonGeneric(String).ArrayList(Size: 512)
1.59 1.25 1.59
1.25		 System.Collections.ContainsTrueComparer(Int32).ImmutableSortedSet(Size: 512)
1.52 1.47 1.52
1.47		 System.Collections.IterateForEach(String).ImmutableSortedSet(Size: 512)
1.52 1.38 1.34
1.36		 1.74
1.40		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "(?i)Sherlock", Options: NonBacktracking)
1.50 1.50 1.50
1.50		 Benchstone.BenchI.BubbleSort2.Test
1.46 2.02 1.46
2.02		 System.Collections.CtorFromCollection(Int32).ConcurrentStack(Size: 512)
1.44 1.43 1.40
1.39		 1.49
1.48		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "(?i)Sherlock Holmes", Options: None)
1.41 1.44 1.41
1.44		 System.Collections.IterateForEach(String).ImmutableList(Size: 512)
1.40 1.40 1.40
1.40		 System.Collections.IterateForEachNonGeneric(String).Queue(Size: 512)
1.38 1.55 1.28
1.50		 1.48
1.60		 System.Collections.IterateForEachNonGeneric(Int32).ArrayList(Size: 512)
1.36 1.36 1.36
1.36		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "(?i)Sherlock", Options: None)
1.34 1.31 1.44
1.44		 1.40
1.25		 1.28
1.28		 1.29
1.29		 1.32
1.32		 System.Collections.IterateForEach(String).Queue(Size: 512)
1.34 1.38 1.39
1.39		 1.29
1.38		 System.Collections.IterateForEachNonGeneric(Int32).Queue(Size: 512)
1.32 1.38 1.39
1.40		 1.26
1.37		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "(?i)Sherlock Holmes", Options: NonBacktracking)
1.31 1.28 1.32
1.32		 1.38
1.39		 1.23
1.15		 System.Linq.Tests.Perf_Enumerable.All_AllElementsMatch(input: IEnumerable)
1.30 1.26 1.45
1.45		 1.35
1.13		 1.44
1.44		 1.16
1.16		 1.14
1.15		 System.Linq.Tests.Perf_Enumerable.SingleWithPredicate_LastElementMatches(input: List)
1.29 1.22 1.29
1.22		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "\p{Lu}", Options: None)
1.28 1.28 1.28
1.28		 System.Linq.Tests.Perf_Enumerable.WhereAny_LastElementMatches(input: Array)
1.27 1.24 1.28
1.23		 1.27
1.25		 System.Linq.Tests.Perf_Enumerable.SelectToArray(input: IEnumerable)
1.27 1.24 1.36
1.37		 1.47
1.39		 1.08
1.08		 1.19
1.14		 System.Linq.Tests.Perf_Enumerable.FirstWithPredicate_LastElementMatches(input: Array)
1.24 1.24 1.24
1.24		 System.Linq.Tests.Perf_Enumerable.SelectToArray(input: List)
1.24 1.25 1.15
1.15		 1.33
1.37		 1.26
1.25		 System.Collections.IterateForEach(String).Stack(Size: 512)
1.24 1.26 1.23
1.23		 1.41
1.65		 1.41
1.22		 1.06
1.06		 1.15
1.20		 System.Linq.Tests.Perf_Enumerable.Aggregate_Seed(input: IEnumerable)
1.24 1.34 1.21
1.21		 1.31
1.73		 1.27
1.28		 1.19
1.19		 SciMark2.kernel.benchSparseMult
1.24 1.26 1.24
1.26		 System.Linq.Tests.Perf_Enumerable.Concat_TenTimes(input: IEnumerable)
1.23 1.31 1.34
1.36		 1.22
1.37		 1.15
1.22		 System.Linq.Tests.Perf_Enumerable.AnyWithPredicate_LastElementMatches(input: Array)
1.23 1.23 1.23
1.23		 System.Collections.Perf_Frozen(Int16).Contains_True(Count: 4)
1.23 1.18 1.14
1.16		 1.44
1.18		 1.21
1.21		 1.14
1.19		 System.Linq.Tests.Perf_Enumerable.Sum(input: IEnumerable)
1.23 1.25 1.33
1.33		 1.13
1.17		 System.Linq.Tests.Perf_Enumerable.WhereAny_LastElementMatches(input: IEnumerable)
1.22 1.23 1.21
1.19		 1.35
1.38		 1.13
1.12		 System.Linq.Tests.Perf_Enumerable.WhereFirst_LastElementMatches(input: IEnumerable)
1.21 1.24 1.10
1.23		 1.25
1.12		 1.28
1.40		 System.Linq.Tests.Perf_Enumerable.Repeat
1.21 1.21 1.21
1.21		 System.Linq.Tests.Perf_Enumerable.Take_All(input: IEnumerable)
1.20 1.22 1.20
1.22		 System.Net.Tests.Perf_WebUtility.Decode_NoDecodingRequired
1.20 1.22 1.20
1.22		 System.Collections.Tests.Perf_BitArray.BitArrayLeftShift(Size: 4)
1.20 1.26 1.20
1.26		 Microsoft.Extensions.Primitives.StringSegmentBenchmark.Equals_Object_Valid
1.19 1.20 1.35
1.35		 1.06
1.06		 1.19
1.22		 System.Linq.Tests.Perf_Enumerable.SingleWithPredicate_LastElementMatches(input: IEnumerable)
1.19 1.20 1.19
1.21		 1.35
1.35		 1.10
1.10		 1.14
1.14		 System.Linq.Tests.Perf_Enumerable.FirstWithPredicate_LastElementMatches(input: List)
1.19 1.11 1.19
1.11		 Benchstone.BenchI.Midpoint.Test
1.19 1.17 0.84
0.84		 1.68
1.64		 System.Linq.Tests.Perf_Enumerable.Count(input: IEnumerable)
1.19 1.19 1.19
1.19		 Benchstone.BenchI.IniArray.Test
1.18 1.20 1.27
1.27		 1.13
1.11		 1.21
1.20		 1.13
1.22		 System.Linq.Tests.Perf_Enumerable.FirstWithPredicate_LastElementMatches(input: IEnumerable)
1.18 1.29 1.18
1.29		 System.Collections.Perf_Frozen(Int16).Contains_True(Count: 64)
1.18 1.15 1.23
1.16		 1.16
1.16		 1.15
1.14		 Benchstone.BenchF.InProd.Test
1.18 1.15 1.18
1.15		 System.Collections.IterateForEach(String).ConcurrentBag(Size: 512)
1.18 1.28 1.18
1.28		 Benchstone.BenchI.NDhrystone.Test
1.17 1.24 1.34
1.31		 1.16
1.45		 1.07
1.07		 1.15
1.18		 System.Linq.Tests.Perf_Enumerable.SingleWithPredicate_LastElementMatches(input: Array)
1.17 1.19 1.17
1.19		 System.Linq.Tests.Perf_Enumerable.SelectToList(input: IList)
1.17 1.17 1.22
1.21		 1.13
1.13		 System.Collections.IterateForEachNonGeneric(String).Stack(Size: 512)
1.17 1.18 1.17
1.18		 System.Text.Json.Tests.Utf8JsonReaderCommentsTests.Utf8JsonReaderCommentParsing(CommentHandling: Skip, SegmentSize: 100, TestCase: ShortMultiLine)
1.17 1.16 1.17
1.17		 1.16
1.16		 System.Linq.Tests.Perf_Enumerable.Where(input: IEnumerable)
1.16 1.21 1.15
1.14		 1.18
1.28		 System.Collections.IterateForEach(Int32).IEnumerable(Size: 512)
1.16 1.18 1.34
1.34		 1.06
1.14		 1.07
1.08		 1.17
1.18		 System.Linq.Tests.Perf_Enumerable.AnyWithPredicate_LastElementMatches(input: IEnumerable)
1.15 1.16 1.21
1.22		 1.10
1.10		 System.Collections.IterateForEachNonGeneric(Int32).Stack(Size: 512)
1.14 1.16 1.14
1.16		 System.Linq.Tests.Perf_Enumerable.TakeLastHalf(input: IEnumerable)
1.14 1.14 1.19
1.19		 1.10
1.10		 1.14
1.14		 System.Linq.Tests.Perf_Enumerable.AnyWithPredicate_LastElementMatches(input: List)
1.14 1.15 1.14
1.15		 System.Linq.Tests.Perf_Enumerable.Select(input: List)
1.14 1.14 1.14
1.14		 System.Net.Primitives.Tests.CredentialCacheTests.ForEach(uriCount: 0, hostPortCount: 10)
1.14 1.14 1.08
1.08		 1.19
1.20		 System.Linq.Tests.Perf_Enumerable.WhereSelect(input: Array)
1.14 1.14 1.14
1.14		 System.Text.Json.Tests.Utf8JsonReaderCommentsTests.Utf8JsonReaderCommentParsing(CommentHandling: Skip, SegmentSize: 0, TestCase: LongSingleLine)
1.13 1.13 1.13
1.13		 System.Linq.Tests.Perf_Enumerable.Where(input: Array)
1.13 1.13 1.13
1.13		 System.Net.Primitives.Tests.CredentialCacheTests.ForEach(uriCount: 10, hostPortCount: 0)
1.13 1.24 1.13
1.40		 1.12
1.10		 System.Linq.Tests.Perf_Enumerable.Select(input: Array)
1.12 1.11 1.12
1.11		 LinqBenchmarks.Order00ManualX
1.12 1.12 1.12
1.12		 System.Text.Json.Document.Tests.Perf_EnumerateArray.EnumerateUsingIndexer(TestCase: ArrayOfStrings)
1.12 1.13 1.12
1.13		 Benchstone.MDBenchI.MDNDhrystone.Test
1.12 1.15 1.11
1.19		 1.12
1.12		 1.12
1.13		 System.Linq.Tests.Perf_Enumerable.CastToSameType(input: IEnumerable)
1.11 1.07 1.11
1.07		 System.Collections.IterateForEach(String).ConcurrentQueue(Size: 512)
1.10 1.15 1.22
1.24		 1.00
1.07		 System.Linq.Tests.Perf_Enumerable.Concat_Once(input: IEnumerable)
1.10 1.16 1.10
1.16		 System.Text.Tests.Perf_Encoding.GetByteCount(size: 16, encName: "utf-8")
1.10 1.10 1.10
1.10		 System.Linq.Tests.Perf_Enumerable.Where(input: List)
1.09 1.09 1.09
1.09		 System.Collections.IterateForEach(Int32).ConcurrentQueue(Size: 512)
1.09 1.09 1.09
1.09		 System.Collections.IterateForEach(String).IEnumerable(Size: 512)
1.09 1.06 1.15
1.06		 1.07
1.07		 1.04
1.06		 System.Linq.Tests.Perf_Enumerable.Reverse(input: IEnumerable)
1.09 1.08 1.11
1.11		 1.06
1.06		 System.Linq.Tests.Perf_Enumerable.WhereSelect(input: IEnumerable)
1.08 1.07 1.08
1.07		 System.Collections.Perf_Frozen(Int16).Contains_True(Count: 512)
1.08 1.08 1.08
1.08		 System.Linq.Tests.Perf_Enumerable.WhereSingle_LastElementMatches(input: List)
1.08 1.12 1.08
1.12		 System.Collections.IterateForEachNonGeneric(Int32).SortedList(Size: 512)
1.07 1.09 1.07
1.09		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "Holmes", Options: None)
1.07 1.09 1.07
1.07		 1.07
1.11		 SciMark2.kernel.benchMonteCarlo
1.07 1.09 1.07
1.09		 System.Collections.Perf_Frozen(Int16).ToFrozenSet(Count: 4)
1.07 1.07 1.07
1.07		 System.Linq.Tests.Perf_Enumerable.WhereSingleOrDefault_LastElementMatches(input: List)
1.06 1.07 0.86
0.85		 1.31
1.34		 System.Linq.Tests.Perf_Enumerable.ElementAt(input: IEnumerable)
1.06 1.08 1.06
1.08		 System.Linq.Tests.Perf_Enumerable.TakeLastHalf(input: List)
1.06 1.09 1.02
1.08		 1.10
1.11		 LinqBenchmarks.Count00LinqMethodX
1.06 1.06 1.06
1.06		 BilinearTest.Interpol_Scalar
1.05 1.09 1.05
1.09		 System.Collections.IterateForEachNonGeneric(Int32).Hashtable(Size: 512)
1.05 1.06 1.05
1.06		 System.Linq.Tests.Perf_Enumerable.WhereSelect(input: List)
1.04 1.10 1.04
1.10		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "The", Options: None)
1.04 1.11 1.04
1.11		 System.Buffers.Tests.ReadOnlySequenceTests(Char).IterateGetPositionMemory
1.03 1.14 0.94
1.07		 1.13
1.22		 System.Linq.Tests.Perf_Enumerable.SelectToList(input: IEnumerable)
1.03 1.07 1.03
1.07		 System.Linq.Tests.Perf_Enumerable.Except(input: IEnumerable)
1.02 1.01 0.82
0.77		 1.28
1.32		 System.Linq.Tests.Perf_Enumerable.Range
1.02 1.19 1.02
1.19		 System.Collections.IterateForEach(Int32).ConcurrentDictionary(Size: 512)
1.02 1.10 1.02
1.10		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "Sherlock", Options: None)
1.00 1.13 1.00
1.13		 System.Xml.Linq.Perf_XElement.GetValue
1.00 1.16 1.00
1.16		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "zqj", Options: None)
0.98 1.09 0.98
1.09		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "Sherlock Holmes", Options: NonBacktracking)
0.97 1.24 0.97
1.24		 System.Tests.Perf_Version.TryFormatL
0.96 1.13 0.96
1.13		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "aqj", Options: None)
0.94 1.11 0.94
1.11		 System.Diagnostics.Perf_Activity.EnumerateActivityTagsLarge
0.94 1.11 0.94
1.11		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "aei", Options: None)
0.90 0.90 0.90
0.90		 System.Text.Perf_Utf8Encoding.GetByteCount(Input: Cyrillic)
0.89 0.90 0.89
0.90		 System.Text.Perf_Utf8Encoding.GetBytes(Input: Chinese)
0.84 0.89 0.84
0.89		 System.Diagnostics.Perf_Activity.EnumerateActivityTagObjectsLarge
0.84 0.83 0.84
0.83		 System.Numerics.Tensors.Tests.Perf_NumberTensorPrimitives(Double).IndexOfMax(BufferLength: 3079)
0.84 2.34 0.84
2.34		 GuardedDevirtualization.ThreeClassVirtual.Call(testInput: pB=0.00 pD=0.67)
0.83 2.29 0.83
2.29		 GuardedDevirtualization.ThreeClassVirtual.Call(testInput: pB=0.67 pD=0.33)
0.83 2.31 0.83
2.31		 GuardedDevirtualization.ThreeClassVirtual.Call(testInput: pB=0.67 pD=0.00)
0.83 1.09 0.83
1.09		 System.Collections.Tests.Perf_PriorityQueue(Int32, Int32).HeapSort(Size: 10)

This was referenced Jul 25, 2024
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@JulieLeeMSFT JulieLeeMSFT modified the milestones: 9.0.0, 10.0.0 Aug 1, 2024
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pushing to .NET 10 becasue any fix on flow graph has a high risk.

@DrewScoggins DrewScoggins mentioned this issue Aug 22, 2024
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@amanasifkhalid
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Updated table:

Notes Recent Score Orig Score arm64 Ubuntu arm64 Windows x64 Ubuntu x64 Windows amd64 Windows Benchmark
1.65 1.50 1.65
1.50		 Benchstone.BenchI.BubbleSort2.Test
1.56 1.72 1.56
1.72		 System.Collections.IterateForEach(String).ImmutableSortedDictionary(Size: 512)
1.49 1.64 1.49
1.64		 System.Linq.Tests.Perf_Enumerable.Count(input: IEnumerable)
1.46 1.19 1.46
1.19		 Benchstone.BenchI.IniArray.Test
1.33 1.44 1.33
1.44		 System.Collections.IterateForEach(String).ImmutableList(Size: 512)
1.32 1.24 1.32
1.24		 System.Tests.Perf_Version.TryFormatL
1.25 1.34 1.26
1.21		 1.31
1.73		 1.29
1.28		 1.17
1.19		 SciMark2.kernel.benchSparseMult
1.21 1.16 1.22
1.16		 1.20
1.16		 Benchstone.BenchF.InProd.Test
1.18 1.18 1.18
1.18		 System.Text.Json.Tests.Utf8JsonReaderCommentsTests.Utf8JsonReaderCommentParsing(CommentHandling: Skip, SegmentSize: 100, TestCase: ShortMultiLine)
1.17 1.09 1.17
1.09		 System.Collections.IterateForEach(String).IEnumerable(Size: 512)
1.16 1.12 1.16
1.12		 System.Text.Json.Document.Tests.Perf_EnumerateArray.EnumerateUsingIndexer(TestCase: ArrayOfStrings)
1.12 1.25 1.12
1.25		 System.Collections.IterateForEach(String).Stack(Size: 512)
1.12 1.09 1.12
1.09		 System.Collections.IterateForEach(Int32).ConcurrentQueue(Size: 512)
1.10 1.09 1.06
1.07		 1.13
1.11		 SciMark2.kernel.benchMonteCarlo
1.09 1.43 1.06
1.39		 1.12
1.48		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "(?i)Sherlock Holmes", Options: None)
1.08 1.17 1.08
1.17		 System.Linq.Tests.Perf_Enumerable.Where(input: IEnumerable)
1.08 1.34 1.08
1.34		 System.Linq.Tests.Perf_Enumerable.ElementAt(input: IEnumerable)
1.07 1.33 1.14
1.44		 0.91
1.25		 1.18
1.32		 System.Collections.IterateForEach(String).Queue(Size: 512)
1.07 1.14 1.07
1.14		 System.Net.Primitives.Tests.CredentialCacheTests.ForEach(uriCount: 0, hostPortCount: 10)
1.07 1.38 1.05
1.40		 1.09
1.37		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "(?i)Sherlock Holmes", Options: NonBacktracking)
1.07 1.11 1.07
1.11		 System.Linq.Tests.Perf_Enumerable.WhereSelect(input: IEnumerable)
1.06 1.25 1.06
1.25		 System.Collections.ContainsTrueComparer(Int32).ImmutableSortedSet(Size: 512)
1.06 1.16 1.06
1.16		 System.Linq.Tests.Perf_Enumerable.TakeLastHalf(input: IEnumerable)
1.06 1.38 1.03
1.36		 1.08
1.40		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "(?i)Sherlock", Options: NonBacktracking)
1.05 1.36 1.05
1.36		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "(?i)Sherlock", Options: None)
1.05 1.06 1.05
1.06		 System.Linq.Tests.Perf_Enumerable.WhereSelect(input: List)
1.05 1.22 1.05
1.22		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "\p{Lu}", Options: None)
1.05 1.15 1.05
1.15		 System.Linq.Tests.Perf_Enumerable.Select(input: List)
1.04 1.06 1.01
1.06		 1.08
1.06		 System.Linq.Tests.Perf_Enumerable.Reverse(input: IEnumerable)
1.04 1.11 1.04
1.11		 LinqBenchmarks.Order00ManualX
1.03 1.13 1.03
1.13		 System.Net.Primitives.Tests.CredentialCacheTests.ForEach(uriCount: 10, hostPortCount: 0)
1.03 1.10 1.03
1.10		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "The", Options: None)
1.02 1.19 1.02
1.19		 System.Collections.IterateForEach(Int32).ConcurrentDictionary(Size: 512)
1.02 1.13 1.02
1.13		 System.Linq.Tests.Perf_Enumerable.Where(input: Array)
1.02 1.31 1.01
1.23		 1.15
1.65		 0.99
1.22		 0.93
1.20		 System.Linq.Tests.Perf_Enumerable.Aggregate_Seed(input: IEnumerable)
1.02 1.28 1.06
1.35		 0.98
1.22		 System.Linq.Tests.Perf_Enumerable.SingleWithPredicate_LastElementMatches(input: IEnumerable)
1.01 1.47 1.01
1.47		 System.Collections.IterateForEach(String).ImmutableSortedSet(Size: 512)
1.01 1.22 1.01
1.22		 System.Net.Tests.Perf_WebUtility.Decode_NoDecodingRequired
1.01 1.31 1.04
1.23		 0.98
1.40		 System.Linq.Tests.Perf_Enumerable.Repeat
1.00 1.21 1.00
1.21		 System.Collections.IterateForEachNonGeneric(String).Stack(Size: 512)
1.00 1.22 1.00
1.22		 System.Collections.IterateForEachNonGeneric(Int32).Stack(Size: 512)
1.00 1.11 1.00
1.11		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "aei", Options: None)
1.00 1.23 1.03
1.32		 0.97
1.15		 System.Linq.Tests.Perf_Enumerable.All_AllElementsMatch(input: IEnumerable)
1.00 1.09 1.00
1.09		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "Holmes", Options: None)
1.00 1.22 1.00
1.22		 System.Collections.Tests.Perf_BitArray.BitArrayLeftShift(Size: 4)
0.99 1.16 0.99
1.16		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "zqj", Options: None)
0.99 1.13 0.99
1.13		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "aqj", Options: None)
0.99 1.10 0.99
1.10		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "Sherlock", Options: None)
0.99 1.11 0.99
1.11		 Benchstone.BenchI.Midpoint.Test
0.99 1.18 1.03
1.16		 0.99
1.18		 0.95
1.19		 System.Linq.Tests.Perf_Enumerable.Sum(input: IEnumerable)
0.99 1.32 0.99
1.32		 System.Linq.Tests.Perf_Enumerable.Range
0.98 1.16 1.01
1.19		 0.96
1.13		 System.Linq.Tests.Perf_Enumerable.CastToSameType(input: IEnumerable)
0.98 1.10 0.98
1.10		 System.Linq.Tests.Perf_Enumerable.Where(input: List)
0.98 1.14 0.98
1.14		 System.Text.Json.Tests.Utf8JsonReaderCommentsTests.Utf8JsonReaderCommentParsing(CommentHandling: Skip, SegmentSize: 0, TestCase: LongSingleLine)
0.97 1.15 0.98
1.19		 0.96
1.12		 System.Linq.Tests.Perf_Enumerable.WhereFirst_LastElementMatches(input: IEnumerable)
0.97 1.24 0.93
1.40		 1.01
1.10		 System.Linq.Tests.Perf_Enumerable.Select(input: Array)
0.97 1.11 0.97
1.11		 System.Diagnostics.Perf_Activity.EnumerateActivityTagsLarge
0.96 1.17 0.96
1.17		 System.Linq.Tests.Perf_Enumerable.WhereAny_LastElementMatches(input: IEnumerable)
0.96 1.09 0.96
1.09		 System.Text.RegularExpressions.Tests.Perf_Regex_Industry_RustLang_Sherlock.Count(Pattern: "Sherlock Holmes", Options: NonBacktracking)
0.95 1.23 0.95
1.23		 System.Linq.Tests.Perf_Enumerable.SelectToArray(input: IEnumerable)
0.95 1.06 0.95
1.06		 BilinearTest.Interpol_Scalar
0.94 1.22 1.04
1.34		 0.79
1.14		 0.99
1.18		 System.Linq.Tests.Perf_Enumerable.AnyWithPredicate_LastElementMatches(input: IEnumerable)
0.93 1.20 0.99
1.27		 0.84
1.11		 0.96
1.22		 System.Linq.Tests.Perf_Enumerable.FirstWithPredicate_LastElementMatches(input: IEnumerable)
0.93 1.08 0.93
1.08		 System.Linq.Tests.Perf_Enumerable.WhereSelect(input: Array)
0.91 1.07 0.91
1.07		 System.Linq.Tests.Perf_Enumerable.Except(input: IEnumerable)
0.91 1.14 0.99
1.07		 0.83
1.22		 System.Linq.Tests.Perf_Enumerable.SelectToList(input: IEnumerable)
0.87 1.19 0.87
1.19		 System.Linq.Tests.Perf_Enumerable.SelectToList(input: IList)
0.82 2.02 0.82
2.02		 System.Collections.CtorFromCollection(Int32).ConcurrentStack(Size: 512)
0.81 1.26 0.81
1.26		 System.Linq.Tests.Perf_Enumerable.Concat_TenTimes(input: IEnumerable)
0.70 1.24 0.70
1.24		 System.Linq.Tests.Perf_Enumerable.Concat_Once(input: IEnumerable)
0.62 2.31 0.62
2.31		 GuardedDevirtualization.ThreeClassVirtual.Call(testInput: pB=0.67 pD=0.00)
0.62 2.34 0.62
2.34		 GuardedDevirtualization.ThreeClassVirtual.Call(testInput: pB=0.00 pD=0.67)
0.61 2.29 0.61
2.29		 GuardedDevirtualization.ThreeClassVirtual.Call(testInput: pB=0.67 pD=0.33)
0.59 1.81 0.59
1.81		 System.Collections.CtorFromCollection(Int32).ImmutableStack(Size: 512)
0.38 1.31 0.33
1.31		 0.30
1.45		 0.54
1.18		 System.Linq.Tests.Perf_Enumerable.SingleWithPredicate_LastElementMatches(input: Array)
0.36 1.21 0.35
1.14		 0.37
1.28		 System.Collections.IterateForEach(Int32).IEnumerable(Size: 512)
0.32 1.29 0.33
1.36		 0.31
1.22		 System.Linq.Tests.Perf_Enumerable.AnyWithPredicate_LastElementMatches(input: Array)
0.31 1.29 0.34
1.37		 0.32
1.39		 0.27
1.14		 System.Linq.Tests.Perf_Enumerable.FirstWithPredicate_LastElementMatches(input: Array)
0.25 1.28 0.28
1.45		 0.22
1.13		 0.24
1.44		 0.24
1.15		 System.Linq.Tests.Perf_Enumerable.SingleWithPredicate_LastElementMatches(input: List)
0.22 1.16 0.22
1.19		 0.23
1.14		 System.Linq.Tests.Perf_Enumerable.AnyWithPredicate_LastElementMatches(input: List)
0.22 1.23 0.22
1.21		 0.18
1.35		 0.25
1.14		 System.Linq.Tests.Perf_Enumerable.FirstWithPredicate_LastElementMatches(input: List)
0.06 1.08 0.06
1.08		 LinqBenchmarks.Count00LinqMethodX

@amanasifkhalid
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The remaining regressions fall into one of the following categories:

I think it's worth keeping this issue open to track the last category. Moving to future.

@amanasifkhalid amanasifkhalid modified the milestones: 10.0.0, Future Apr 28, 2025
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arch-x64 area-CodeGen-coreclr CLR JIT compiler in src/coreclr/src/jit and related components such as SuperPMI os-windows Priority:2 Work that is important, but not critical for the release runtime-coreclr specific to the CoreCLR runtime tenet-performance Performance related issue tenet-performance-benchmarks Issue from performance benchmark
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