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Bump Microsoft.Testing.Extensions.CodeCoverage from 18.9.0 to 18.12.0 - #73

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Bump Microsoft.Testing.Extensions.CodeCoverage from 18.9.0 to 18.12.0#73
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Updated Microsoft.Testing.Extensions.CodeCoverage from 18.9.0 to 18.12.0.

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Bump Microsoft.Testing.Extensions.CodeCoverage from 18.9.0 to 18.12.0
45a74ef 
---
updated-dependencies:
- dependency-name: Microsoft.Testing.Extensions.CodeCoverage
  dependency-version: 18.12.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: Microsoft.Testing.Extensions.CodeCoverage
  dependency-version: 18.12.0
  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 24.04.5 LTS (Noble Numbat)
AMD EPYC 7763 2.45GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.401
  [Host]     : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v3
  Job-MEHJPP : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v3

IterationCount=5  WarmupCount=1
Method Count Mean Error StdDev Ratio Gen0 Allocated Alloc Ratio
GeneratedReader_ReadAsync 100 4.996 μs 0.0560 μs 0.0145 μs 0.65 0.2518 4248 B 0.23
SpanReader_ReadAsync 100 7.260 μs 0.0500 μs 0.0130 μs 0.94 0.2518 4264 B 0.23
Naive_ReadLineAsync 100 7.695 μs 0.0750 μs 0.0195 μs 1.00 1.0986 18424 B 1.00
GeneratedReader_ReadAsync_Pooled 100 10.163 μs 0.1681 μs 0.0260 μs 1.32 0.0153 328 B 0.02
SpanReader_ReadAsync_Pooled 100 12.459 μs 0.2071 μs 0.0538 μs 1.62 0.0153 344 B 0.02
GeneratedReader_ReadAsync 1000 49.696 μs 1.7432 μs 0.2698 μs 0.66 2.3193 39528 B 0.216
Naive_ReadLineAsync 1000 75.004 μs 1.1693 μs 0.1809 μs 1.00 10.8643 183304 B 1.000
SpanReader_ReadAsync 1000 76.631 μs 0.7913 μs 0.2055 μs 1.02 2.3193 39544 B 0.216
GeneratedReader_ReadAsync_Pooled 1000 105.711 μs 0.8734 μs 0.2268 μs 1.41 - 328 B 0.002
SpanReader_ReadAsync_Pooled 1000 120.645 μs 4.1917 μs 0.6487 μs 1.61 - 344 B 0.002

Benchmarks.Perf.ByteReaderBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.5 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.401
  [Host]     : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v4
  Job-MEHJPP : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v4

IterationCount=5  WarmupCount=1
Method Count Mean Error StdDev Ratio Gen0 Allocated Alloc Ratio
CharParser_Parse 100 4.069 μs 0.0386 μs 0.0100 μs 1.00 0.2289 3.83 KB 1.00
ByteParser_Parse 100 4.967 μs 0.0453 μs 0.0118 μs 1.22 0.2289 3.83 KB 1.00
CharParser_Parse_AfterUtf8Decode 100 5.687 μs 0.1392 μs 0.0215 μs 1.40 0.6638 10.86 KB 2.84
CharParser_Parse 1000 41.363 μs 1.6099 μs 0.2491 μs 1.00 2.3193 38.28 KB 1.00
ByteParser_Parse 1000 47.392 μs 0.3324 μs 0.0514 μs 1.15 2.3193 38.28 KB 1.00
CharParser_Parse_AfterUtf8Decode 1000 57.091 μs 0.8414 μs 0.2185 μs 1.38 6.5918 108.59 KB 2.84

Benchmarks.Perf.ByteReaderPoolingBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.5 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.401
  [Host]     : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v4
  Job-MEHJPP : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v4

IterationCount=5  WarmupCount=1
Method Count Mean Error StdDev Ratio Gen0 Allocated Alloc Ratio
NoString 100 3.427 μs 0.0125 μs 0.0033 μs 0.60 - - 0.00
WithString_NoPool 100 5.757 μs 0.0411 μs 0.0107 μs 1.00 0.2289 3920 B 1.00
WithString_Pooled 100 10.351 μs 0.0382 μs 0.0059 μs 1.80 - - 0.00
NoString 1000 33.756 μs 0.0679 μs 0.0105 μs 0.60 - - 0.00
WithString_NoPool 1000 56.431 μs 1.8214 μs 0.4730 μs 1.00 2.3193 39200 B 1.00
WithString_Pooled 1000 100.501 μs 0.1164 μs 0.0302 μs 1.78 - - 0.00

Benchmarks.Perf.ByteReaderStreamBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.5 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.401
  [Host]     : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v4
  Job-MEHJPP : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v4

IterationCount=5  WarmupCount=1
Method Count Mean Error StdDev Ratio Gen0 Gen1 Gen2 Allocated Alloc Ratio
ByteReader_Read 100 5.703 μs 0.0309 μs 0.0048 μs 0.29 0.2289 - - 3.83 KB 0.02
CharReader_Read 100 19.723 μs 0.5956 μs 0.0922 μs 1.00 41.6565 41.6565 41.6565 196.04 KB 1.00
ByteReader_Read 1000 55.028 μs 0.6152 μs 0.1598 μs 0.67 2.3193 - - 38.28 KB 0.17
CharReader_Read 1000 82.616 μs 0.8198 μs 0.2129 μs 1.00 41.6260 41.6260 41.6260 230.5 KB 1.00

Benchmarks.Perf.ComparisonBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.5 LTS (Noble Numbat)
AMD EPYC 9V74 2.68GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.401
  [Host]     : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v3
  Job-MEHJPP : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v3

IterationCount=5  WarmupCount=1
Method Count Mean Error StdDev Ratio RatioSD Gen0 Gen1 Allocated Alloc Ratio
FixedWidthParser_Generated 100 4.792 μs 0.0493 μs 0.0128 μs 0.13 0.00 0.2289 - 3.86 KB 0.09
FixedWidthParser_Read 100 6.527 μs 0.0512 μs 0.0133 μs 0.18 0.00 0.2289 - 3.86 KB 0.09
RecordParser_Read 100 10.948 μs 0.0962 μs 0.0250 μs 0.31 0.00 0.2441 - 4.23 KB 0.10
FileHelpers_Read 100 35.741 μs 1.4919 μs 0.3874 μs 1.00 0.01 2.5024 0.0610 41.49 KB 1.00
FlatFiles_Read 100 64.297 μs 1.8417 μs 0.4783 μs 1.80 0.02 6.2256 0.1221 103.13 KB 2.49
FixedWidthParser_Generated 1000 47.791 μs 0.6036 μs 0.0934 μs 0.13 0.00 2.3193 - 38.31 KB 0.09
FixedWidthParser_Read 1000 63.000 μs 1.1799 μs 0.1826 μs 0.18 0.00 2.3193 - 38.31 KB 0.09
RecordParser_Read 1000 108.276 μs 0.8053 μs 0.1246 μs 0.30 0.00 2.3193 - 38.69 KB 0.10
FileHelpers_Read 1000 359.101 μs 7.0524 μs 1.0914 μs 1.00 0.00 24.4141 5.8594 406.42 KB 1.00
FlatFiles_Read 1000 643.683 μs 17.7218 μs 4.6023 μs 1.79 0.01 57.6172 1.9531 953.2 KB 2.35

Benchmarks.Perf.ComparisonWriterBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.5 LTS (Noble Numbat)
AMD EPYC 9V74 2.68GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.401
  [Host]     : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v3
  Job-MEHJPP : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v3

IterationCount=5  WarmupCount=1
Method Count Mean Error StdDev Ratio RatioSD Gen0 Gen1 Allocated Alloc Ratio
FixedWidthParser_Write 1 135.2 ns 1.35 ns 0.21 ns 0.73 0.00 - - - 0.00
FileHelpers_Write 1 185.7 ns 3.96 ns 1.03 ns 1.00 0.01 0.0215 - 360 B 1.00
FlatFiles_Write 1 436.9 ns 6.15 ns 1.60 ns 2.35 0.01 0.0424 - 712 B 1.98
RecordParser_Write 1 19,866.4 ns 2,154.47 ns 559.51 ns 107.00 2.80 1.0986 0.0305 18128 B 50.36
FixedWidthParser_Write 100 13,364.4 ns 31.14 ns 8.09 ns 0.70 0.00 - - - 0.00
FileHelpers_Write 100 18,984.4 ns 358.56 ns 93.12 ns 1.00 0.01 1.9531 - 32832 B 1.00
FlatFiles_Write 100 43,988.3 ns 905.54 ns 140.13 ns 2.32 0.01 4.2114 - 71200 B 2.17
RecordParser_Write 100 50,354.5 ns 8,877.26 ns 2,305.40 ns 2.65 0.11 1.2207 - 20440 B 0.62
FixedWidthParser_Write 1000 135,874.3 ns 245.81 ns 63.84 ns 0.73 0.00 - - - 0.00
FileHelpers_Write 1000 186,133.4 ns 3,464.20 ns 899.64 ns 1.00 0.01 19.5313 - 328032 B 1.00
FlatFiles_Write 1000 439,617.4 ns 10,206.52 ns 1,579.47 ns 2.36 0.01 42.4805 - 712000 B 2.17
RecordParser_Write 1000 467,815.2 ns 114,327.13 ns 29,690.39 ns 2.51 0.15 80.0781 78.1250 1340747 B 4.09

Benchmarks.Perf.ParserBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.5 LTS (Noble Numbat)
AMD EPYC 7763 2.45GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.401
  [Host]     : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v3
  Job-MEHJPP : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v3

IterationCount=5  WarmupCount=1
Method Line Mean Error StdDev Ratio Gen0 Allocated Alloc Ratio
Parse_NoPool Jane (...)0.00 [25] 54.63 ns 2.268 ns 0.351 ns 1.00 0.0029 48 B 1.00
Parse_WithStringPool Jane (...)0.00 [25] 82.76 ns 0.075 ns 0.012 ns 1.51 - - 0.00
Parse_NoPool John (...)0.00 [25] 54.02 ns 0.970 ns 0.252 ns 1.00 0.0024 40 B 1.00
Parse_WithStringPool John (...)0.00 [25] 80.92 ns 0.114 ns 0.018 ns 1.50 - - 0.00

Benchmarks.Perf.PipeReaderBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.5 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.401
  [Host]     : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v4
  Job-MEHJPP : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v4

IterationCount=5  WarmupCount=1
Method Count Mean Error StdDev Ratio RatioSD Gen0 Allocated Alloc Ratio
Stream_ReadAsync 100 6.658 μs 0.0255 μs 0.0039 μs 1.00 0.00 0.2441 4.09 KB 1.00
Pipe_ReadAsync 100 13.777 μs 0.3137 μs 0.0485 μs 2.07 0.01 0.2594 4.48 KB 1.10
Pipe_ReadAsync_SmallSegments 100 41.598 μs 0.9035 μs 0.1398 μs 6.25 0.02 0.2441 4.67 KB 1.14
Stream_ReadAsync 1000 60.667 μs 0.3567 μs 0.0552 μs 1.00 0.00 2.3193 38.54 KB 1.00
Pipe_ReadAsync 1000 136.218 μs 2.2335 μs 0.3456 μs 2.25 0.01 2.1973 39.03 KB 1.01
Pipe_ReadAsync_SmallSegments 1000 397.645 μs 2.6046 μs 0.6764 μs 6.55 0.01 1.9531 39.13 KB 1.02

Benchmarks.Perf.ReaderBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.5 LTS (Noble Numbat)
AMD EPYC 7763 2.45GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.401
  [Host]     : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v3
  Job-MEHJPP : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v3

IterationCount=5  WarmupCount=1
Method Count Mean Error StdDev Ratio RatioSD Gen0 Allocated Alloc Ratio
GeneratedReader_Read 100 4.502 μs 0.0351 μs 0.0091 μs 0.68 0.00 0.2289 3952 B 0.354
Naive_ReadLine 100 6.576 μs 0.1585 μs 0.0245 μs 1.00 0.00 0.6638 11152 B 1.000
SpanReader_Read 100 7.103 μs 0.0799 μs 0.0124 μs 1.08 0.00 0.2289 3952 B 0.354
GeneratedReader_Read_Pooled 100 9.786 μs 0.0838 μs 0.0130 μs 1.49 0.01 - 32 B 0.003
SpanReader_Read_Pooled 100 11.991 μs 0.1516 μs 0.0394 μs 1.82 0.01 - 32 B 0.003
GeneratedReader_Read 1000 44.870 μs 0.9224 μs 0.2395 μs 0.66 0.01 2.3193 39232 B 0.353
SpanReader_Read 1000 61.212 μs 0.8614 μs 0.2237 μs 0.89 0.01 2.3193 39232 B 0.353
Naive_ReadLine 1000 68.442 μs 3.1419 μs 0.8159 μs 1.00 0.02 6.5918 111232 B 1.000
GeneratedReader_Read_Pooled 1000 92.165 μs 0.6482 μs 0.1003 μs 1.35 0.01 - 32 B 0.000
SpanReader_Read_Pooled 1000 110.785 μs 0.7176 μs 0.1864 μs 1.62 0.02 - 32 B 0.000

Benchmarks.Perf.ReaderStartupBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.5 LTS (Noble Numbat)
AMD EPYC 7763 2.45GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.401
  [Host]     : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v3
  Job-MEHJPP : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v3

IterationCount=5  WarmupCount=1
Method Mean Error StdDev Ratio Gen0 Allocated Alloc Ratio
GeneratedReader_ReadOne 118.0 ns 3.32 ns 0.86 ns 1.00 0.0043 72 B 0.75
ReflectionReader_ConstructAndReadOne 118.3 ns 3.41 ns 0.88 ns 1.00 0.0057 96 B 1.00

Benchmarks.Perf.SourceGenParserBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.5 LTS (Noble Numbat)
AMD EPYC 7763 2.45GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.401
  [Host]     : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v3
  Job-MEHJPP : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v3

IterationCount=5  WarmupCount=1
Method Line Mean Error StdDev Ratio Gen0 Allocated Alloc Ratio
Generated John (...)00.00 [25] 37.98 ns 1.296 ns 0.337 ns 0.76 0.0024 40 B 1.00
Reflection John (...)00.00 [25] 50.14 ns 0.812 ns 0.126 ns 1.00 0.0024 40 B 1.00

Benchmarks.Perf.WriterBenchmarks


BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.5 LTS (Noble Numbat)
AMD EPYC 7763 2.45GHz, 1 CPU, 4 logical and 2 physical cores
.NET SDK 10.0.401
  [Host]     : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v3
  Job-MEHJPP : .NET 10.0.12 (10.0.12, 10.0.1226.42308), X64 RyuJIT x86-64-v3

IterationCount=5  WarmupCount=1
Method Count Mean Error StdDev Ratio RatioSD Gen0 Gen1 Allocated Alloc Ratio
WriteMany_ReuseWriterSpan 1 130.3 ns 0.17 ns 0.03 ns 0.45 0.01 - - - 0.00
WriteMany_ReuseWriter 1 131.4 ns 0.45 ns 0.07 ns 0.45 0.01 - - - 0.00
WriteMany_AsyncReuseWriter 1 185.7 ns 0.12 ns 0.02 ns 0.64 0.01 0.0019 - 32 B 0.01
WriteMany_NewStream 1 289.5 ns 14.87 ns 3.86 ns 1.00 0.02 0.1326 - 2224 B 1.00
WriteMany_AsyncNewStream 1 540.7 ns 18.14 ns 4.71 ns 1.87 0.03 0.3204 0.0029 5360 B 2.41
WriteMany_ReuseWriterSpan 100 13,252.0 ns 69.70 ns 10.79 ns 0.95 0.01 - - - 0.000
WriteMany_ReuseWriter 100 13,349.9 ns 57.22 ns 14.86 ns 0.96 0.01 - - - 0.000
WriteMany_NewStream 100 13,960.8 ns 678.12 ns 176.11 ns 1.00 0.02 0.3052 - 5328 B 1.000
WriteMany_AsyncNewStream 100 15,810.7 ns 193.92 ns 50.36 ns 1.13 0.01 0.3052 - 5360 B 1.006
WriteMany_AsyncReuseWriter 100 16,141.3 ns 51.83 ns 8.02 ns 1.16 0.01 - - 32 B 0.006
WriteMany_ReuseWriter 1000 131,795.2 ns 718.21 ns 186.52 ns 0.96 0.01 - - - 0.000
WriteMany_ReuseWriterSpan 1000 133,057.6 ns 369.59 ns 57.20 ns 0.97 0.01 - - - 0.000
WriteMany_NewStream 1000 136,792.2 ns 3,214.53 ns 834.80 ns 1.00 0.01 0.2441 - 5328 B 1.000
WriteMany_AsyncNewStream 1000 151,635.5 ns 1,306.50 ns 202.18 ns 1.11 0.01 0.2441 - 5360 B 1.006
WriteMany_AsyncReuseWriter 1000 152,422.7 ns 541.69 ns 83.83 ns 1.11 0.01 - - 32 B 0.006

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