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Bump Microsoft.Testing.Extensions.CodeCoverage from 18.9.0 to 18.11.0 - #60

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Bump Microsoft.Testing.Extensions.CodeCoverage from 18.9.0 to 18.11.0#60
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Updated Microsoft.Testing.Extensions.CodeCoverage from 18.9.0 to 18.11.0.

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Bump Microsoft.Testing.Extensions.CodeCoverage from 18.9.0 to 18.11.0
1b36274 
---
updated-dependencies:
- dependency-name: Microsoft.Testing.Extensions.CodeCoverage
  dependency-version: 18.11.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: Microsoft.Testing.Extensions.CodeCoverage
  dependency-version: 18.11.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Benchmark Results

Measured on ubuntu-latest (GitHub Actions). Runner noise may affect absolute numbers; use these for relative comparisons within a PR.

Benchmarks.Perf.AsyncReaderBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
Intel Xeon Platinum 8370C CPU 2.80GHz (Max: 2.79GHz), 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.400
  [Host]     : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4
  Job-MEHJPP : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4

IterationCount=5  WarmupCount=1
Method Count Mean Error StdDev Ratio RatioSD Gen0 Allocated Alloc Ratio
GeneratedReader_ReadAsync 100 4.755 μs 0.0426 μs 0.0111 μs 0.60 0.00 0.1678 4248 B 0.23
SpanReader_ReadAsync 100 6.682 μs 0.0487 μs 0.0126 μs 0.84 0.00 0.1678 4264 B 0.23
Naive_ReadLineAsync 100 7.956 μs 0.2294 μs 0.0355 μs 1.00 0.01 0.7324 18424 B 1.00
GeneratedReader_ReadAsync_Pooled 100 9.271 μs 0.0446 μs 0.0116 μs 1.17 0.00 - 328 B 0.02
SpanReader_ReadAsync_Pooled 100 11.234 μs 0.0816 μs 0.0126 μs 1.41 0.01 - 344 B 0.02
GeneratedReader_ReadAsync 1000 45.511 μs 0.5282 μs 0.1372 μs 0.57 0.01 1.5259 39528 B 0.216
SpanReader_ReadAsync 1000 68.318 μs 0.8090 μs 0.2101 μs 0.86 0.01 1.4648 39544 B 0.216
Naive_ReadLineAsync 1000 79.635 μs 6.6962 μs 1.0362 μs 1.00 0.02 7.2021 183304 B 1.000
GeneratedReader_ReadAsync_Pooled 1000 90.261 μs 0.9484 μs 0.2463 μs 1.13 0.01 - 328 B 0.002
SpanReader_ReadAsync_Pooled 1000 115.500 μs 1.2548 μs 0.1942 μs 1.45 0.02 - 344 B 0.002

Benchmarks.Perf.ByteReaderBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.400
  [Host]     : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4
  Job-MEHJPP : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4

IterationCount=5  WarmupCount=1
Method Count Mean Error StdDev Ratio Gen0 Allocated Alloc Ratio
CharParser_Parse 100 3.994 μs 0.0858 μs 0.0223 μs 1.00 0.2289 3.83 KB 1.00
ByteParser_Parse 100 4.777 μs 0.0272 μs 0.0042 μs 1.20 0.2289 3.83 KB 1.00
CharParser_Parse_AfterUtf8Decode 100 5.569 μs 0.1702 μs 0.0263 μs 1.39 0.6638 10.86 KB 2.84
CharParser_Parse 1000 40.467 μs 0.6220 μs 0.1615 μs 1.00 2.3193 38.28 KB 1.00
ByteParser_Parse 1000 47.436 μs 0.8900 μs 0.1377 μs 1.17 2.3193 38.28 KB 1.00
CharParser_Parse_AfterUtf8Decode 1000 57.104 μs 2.2161 μs 0.3429 μs 1.41 6.5918 108.59 KB 2.84

Benchmarks.Perf.ByteReaderPoolingBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.400
  [Host]     : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4
  Job-MEHJPP : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4

IterationCount=5  WarmupCount=1
Method Count Mean Error StdDev Ratio Gen0 Allocated Alloc Ratio
NoString 100 3.399 μs 0.0149 μs 0.0039 μs 0.60 - - 0.00
WithString_NoPool 100 5.693 μs 0.1043 μs 0.0161 μs 1.00 0.2289 3920 B 1.00
WithString_Pooled 100 10.010 μs 0.0274 μs 0.0042 μs 1.76 - - 0.00
NoString 1000 34.264 μs 0.0914 μs 0.0141 μs 0.62 - - 0.00
WithString_NoPool 1000 55.558 μs 0.2654 μs 0.0411 μs 1.00 2.3193 39200 B 1.00
WithString_Pooled 1000 104.189 μs 0.4905 μs 0.0759 μs 1.88 - - 0.00

Benchmarks.Perf.ByteReaderStreamBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.400
  [Host]     : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4
  Job-MEHJPP : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4

IterationCount=5  WarmupCount=1
Method Count Mean Error StdDev Ratio RatioSD Gen0 Gen1 Gen2 Allocated Alloc Ratio
ByteReader_Read 100 5.650 μs 0.0344 μs 0.0089 μs 0.28 0.00 0.2289 - - 3.83 KB 0.02
CharReader_Read 100 19.956 μs 1.2999 μs 0.3376 μs 1.00 0.02 41.6565 41.6565 41.6565 196.04 KB 1.00
ByteReader_Read 1000 55.626 μs 1.4465 μs 0.3756 μs 0.67 0.00 2.3193 - - 38.28 KB 0.17
CharReader_Read 1000 82.590 μs 0.5322 μs 0.0824 μs 1.00 0.00 41.6260 41.6260 41.6260 230.5 KB 1.00

Benchmarks.Perf.ComparisonBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
INTEL XEON PLATINUM 8573C 2.30GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.400
  [Host]     : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4
  Job-MEHJPP : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4

IterationCount=5  WarmupCount=1
Method Count Mean Error StdDev Ratio RatioSD Gen0 Gen1 Allocated Alloc Ratio
FixedWidthParser_Generated 100 3.669 μs 0.1240 μs 0.0322 μs 0.14 0.00 0.0458 - 3.86 KB 0.09
FixedWidthParser_Read 100 5.508 μs 0.0864 μs 0.0224 μs 0.20 0.00 0.0458 - 3.86 KB 0.09
RecordParser_Read 100 7.921 μs 0.1754 μs 0.0456 μs 0.29 0.00 0.0458 - 4.23 KB 0.10
FileHelpers_Read 100 27.139 μs 0.3124 μs 0.0811 μs 1.00 0.00 0.4883 - 41.49 KB 1.00
FlatFiles_Read 100 58.164 μs 2.4823 μs 0.3841 μs 2.14 0.01 1.2207 - 103.13 KB 2.49
FixedWidthParser_Generated 1000 36.912 μs 1.1314 μs 0.2938 μs 0.14 0.00 0.4272 - 38.31 KB 0.09
FixedWidthParser_Read 1000 48.936 μs 3.7780 μs 0.9811 μs 0.18 0.00 0.4272 - 38.31 KB 0.09
RecordParser_Read 1000 82.588 μs 3.3993 μs 0.8828 μs 0.31 0.00 0.3662 - 38.69 KB 0.10
FileHelpers_Read 1000 269.924 μs 3.9576 μs 0.6124 μs 1.00 0.00 4.8828 0.9766 406.42 KB 1.00
FlatFiles_Read 1000 585.592 μs 20.1737 μs 5.2390 μs 2.17 0.02 10.7422 - 953.2 KB 2.35

Benchmarks.Perf.ComparisonWriterBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
INTEL XEON PLATINUM 8573C 2.30GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.400
  [Host]     : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4
  Job-MEHJPP : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4

IterationCount=5  WarmupCount=1
Method Count Mean Error StdDev Ratio RatioSD Gen0 Gen1 Allocated Alloc Ratio
FixedWidthParser_Write 1 93.92 ns 2.316 ns 0.602 ns 0.58 0.01 - - - 0.00
FileHelpers_Write 1 162.18 ns 11.041 ns 2.867 ns 1.00 0.02 0.0043 - 360 B 1.00
FlatFiles_Write 1 398.88 ns 20.354 ns 5.286 ns 2.46 0.05 0.0081 - 712 B 1.98
RecordParser_Write 1 17,155.12 ns 2,341.971 ns 608.202 ns 105.80 3.83 0.1831 - 18128 B 50.36
FixedWidthParser_Write 100 10,029.83 ns 193.570 ns 50.269 ns 0.62 0.01 - - - 0.00
FileHelpers_Write 100 16,187.22 ns 657.766 ns 170.820 ns 1.00 0.01 0.3662 - 32832 B 1.00
FlatFiles_Write 100 39,009.04 ns 1,625.194 ns 251.501 ns 2.41 0.03 0.7935 - 71200 B 2.17
RecordParser_Write 100 62,670.77 ns 6,223.134 ns 1,616.128 ns 3.87 0.10 0.2441 - 20440 B 0.62
FixedWidthParser_Write 1000 100,410.92 ns 2,162.436 ns 561.578 ns 0.64 0.00 - - - 0.00
FileHelpers_Write 1000 156,855.54 ns 2,150.527 ns 332.796 ns 1.00 0.00 3.9063 - 328032 B 1.00
FlatFiles_Write 1000 406,925.57 ns 11,460.197 ns 2,976.177 ns 2.59 0.02 8.3008 - 712000 B 2.17
RecordParser_Write 1000 526,475.15 ns 9,752.268 ns 2,532.633 ns 3.36 0.02 12.6953 11.7188 1080409 B 3.29

Benchmarks.Perf.ParserBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
Intel Xeon 6973P-C 4.15GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.400
  [Host]     : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4
  Job-MEHJPP : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4

IterationCount=5  WarmupCount=1
Method Line Mean Error StdDev Ratio RatioSD Gen0 Allocated Alloc Ratio
Parse_NoPool Jane (...)0.00 [25] 31.75 ns 1.098 ns 0.285 ns 1.00 0.01 0.0005 48 B 1.00
Parse_WithStringPool Jane (...)0.00 [25] 46.28 ns 0.830 ns 0.128 ns 1.46 0.01 - - 0.00
Parse_NoPool John (...)0.00 [25] 31.88 ns 3.604 ns 0.936 ns 1.00 0.04 0.0005 40 B 1.00
Parse_WithStringPool John (...)0.00 [25] 55.06 ns 11.877 ns 3.085 ns 1.73 0.10 - - 0.00

Benchmarks.Perf.PipeReaderBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.400
  [Host]     : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4
  Job-MEHJPP : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4

IterationCount=5  WarmupCount=1
Method Count Mean Error StdDev Ratio RatioSD Gen0 Allocated Alloc Ratio
Stream_ReadAsync 100 6.697 μs 0.0588 μs 0.0153 μs 1.00 0.00 0.2441 4.09 KB 1.00
Pipe_ReadAsync 100 13.825 μs 0.1644 μs 0.0427 μs 2.06 0.01 0.2594 4.48 KB 1.10
Pipe_ReadAsync_SmallSegments 100 41.458 μs 0.4837 μs 0.0748 μs 6.19 0.02 0.2441 4.67 KB 1.14
Stream_ReadAsync 1000 64.946 μs 0.7179 μs 0.1111 μs 1.00 0.00 2.3193 38.54 KB 1.00
Pipe_ReadAsync 1000 132.418 μs 0.3298 μs 0.0510 μs 2.04 0.00 2.1973 39.03 KB 1.01
Pipe_ReadAsync_SmallSegments 1000 411.497 μs 1.9981 μs 0.5189 μs 6.34 0.01 1.9531 39.13 KB 1.02

Benchmarks.Perf.ReaderBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
Intel Xeon Platinum 8370C CPU 2.80GHz (Max: 2.79GHz), 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.400
  [Host]     : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4
  Job-MEHJPP : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4

IterationCount=5  WarmupCount=1
Method Count Mean Error StdDev Ratio RatioSD Gen0 Allocated Alloc Ratio
GeneratedReader_Read 100 4.450 μs 0.0774 μs 0.0120 μs 0.68 0.00 0.1526 3952 B 0.354
SpanReader_Read 100 5.694 μs 0.0260 μs 0.0067 μs 0.87 0.00 0.1526 3952 B 0.354
Naive_ReadLine 100 6.580 μs 0.0952 μs 0.0147 μs 1.00 0.00 0.4425 11152 B 1.000
GeneratedReader_Read_Pooled 100 8.714 μs 0.0498 μs 0.0129 μs 1.32 0.00 - 32 B 0.003
SpanReader_Read_Pooled 100 10.674 μs 0.0579 μs 0.0090 μs 1.62 0.00 - 32 B 0.003
GeneratedReader_Read 1000 42.929 μs 0.3756 μs 0.0581 μs 0.63 0.01 1.5259 39232 B 0.353
SpanReader_Read 1000 55.781 μs 0.4753 μs 0.1234 μs 0.81 0.01 1.5259 39232 B 0.353
Naive_ReadLine 1000 68.680 μs 3.3220 μs 0.8627 μs 1.00 0.02 4.3945 111232 B 1.000
GeneratedReader_Read_Pooled 1000 86.144 μs 0.3049 μs 0.0792 μs 1.25 0.01 - 32 B 0.000
SpanReader_Read_Pooled 1000 106.669 μs 0.2738 μs 0.0711 μs 1.55 0.02 - 32 B 0.000

Benchmarks.Perf.ReaderStartupBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
Intel Xeon Platinum 8370C CPU 2.80GHz (Max: 2.79GHz), 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.400
  [Host]     : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4
  Job-MEHJPP : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4

IterationCount=5  WarmupCount=1
Method Mean Error StdDev Ratio Gen0 Allocated Alloc Ratio
GeneratedReader_ReadOne 107.5 ns 0.63 ns 0.10 ns 0.93 0.0029 72 B 0.75
ReflectionReader_ConstructAndReadOne 115.7 ns 1.04 ns 0.16 ns 1.00 0.0038 96 B 1.00

Benchmarks.Perf.SourceGenParserBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
Intel Xeon 6973P-C 4.15GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.400
  [Host]     : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4
  Job-MEHJPP : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4

IterationCount=5  WarmupCount=1
Method Line Mean Error StdDev Ratio RatioSD Gen0 Allocated Alloc Ratio
Generated John (...)00.00 [25] 22.99 ns 0.856 ns 0.222 ns 0.59 0.03 0.0005 40 B 1.00
Reflection John (...)00.00 [25] 38.97 ns 7.268 ns 1.888 ns 1.00 0.06 0.0005 40 B 1.00

Benchmarks.Perf.WriterBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 3.65GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.400
  [Host]     : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4
  Job-MEHJPP : .NET 10.0.11 (10.0.11, 10.0.1126.37416), X64 RyuJIT x86-64-v4

IterationCount=5  WarmupCount=1
Method Count Mean Error StdDev Ratio RatioSD Gen0 Gen1 Allocated Alloc Ratio
WriteMany_ReuseWriter 1 100.9 ns 4.27 ns 1.11 ns 0.56 0.01 - - - 0.00
WriteMany_ReuseWriterSpan 1 108.6 ns 0.75 ns 0.12 ns 0.60 0.00 - - - 0.00
WriteMany_AsyncReuseWriter 1 137.1 ns 0.90 ns 0.14 ns 0.76 0.00 0.0019 - 32 B 0.01
WriteMany_NewStream 1 180.8 ns 3.15 ns 0.82 ns 1.00 0.01 0.1328 - 2224 B 1.00
WriteMany_AsyncNewStream 1 339.5 ns 7.59 ns 1.17 ns 1.88 0.01 0.3204 0.0029 5360 B 2.41
WriteMany_ReuseWriter 100 10,160.1 ns 40.81 ns 6.32 ns 0.94 0.01 - - - 0.000
WriteMany_ReuseWriterSpan 100 10,241.1 ns 32.04 ns 4.96 ns 0.94 0.01 - - - 0.000
WriteMany_NewStream 100 10,856.6 ns 657.73 ns 170.81 ns 1.00 0.02 0.3052 - 5328 B 1.000
WriteMany_AsyncReuseWriter 100 11,549.4 ns 113.41 ns 17.55 ns 1.06 0.02 - - 32 B 0.006
WriteMany_AsyncNewStream 100 11,942.9 ns 147.50 ns 38.30 ns 1.10 0.02 0.3204 - 5360 B 1.006
WriteMany_ReuseWriterSpan 1000 102,460.4 ns 601.43 ns 156.19 ns 0.99 0.00 - - - 0.000
WriteMany_ReuseWriter 1000 102,988.9 ns 2,316.23 ns 601.52 ns 0.99 0.01 - - - 0.000
WriteMany_NewStream 1000 103,815.6 ns 1,792.31 ns 465.46 ns 1.00 0.01 0.2441 - 5328 B 1.000
WriteMany_AsyncReuseWriter 1000 118,399.0 ns 305.90 ns 79.44 ns 1.14 0.00 - - 32 B 0.006
WriteMany_AsyncNewStream 1000 118,937.9 ns 363.42 ns 56.24 ns 1.15 0.00 0.2441 - 5360 B 1.006

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Superseded by #67.

@dependabot dependabot Bot closed this Sep 17, 2026
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dependabot Bot deleted the dependabot/nuget/tests/FixedWidthParser.Generator.Tests/develop/multi-a4b8d90e47 branch September 17, 2026 15:07
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