[Benchmark X64] MihaZupan/runtime/json-needsEscaping-scalarScan

[MihuBot]

Job completed in 34 minutes 24 seconds (remote runner delay: 1 minute 30 seconds).
https://github.com/MihaZupan/runtime/tree/json-needsEscaping-scalarScan
Using arguments: benchmark *Perf_Strings*|*Perf_Deep*|*SerializeToWriter*
Main commit: dotnet/runtime@07f0abc
PR commit: MihaZupan/runtime@89baa84

System.Text.Json.Tests.Perf_Strings

BenchmarkDotNet v0.16.0-nightly.20260518.1249, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.34 GB Total, 5.76 GB Available
  Job-NRQIIJ : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
  Job-NGSIDY : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
EvaluateOverhead=False  OutlierMode=DontRemove  PowerPlanMode=
IterationTime=250ms  MaxIterationCount=20  MemoryRandomization=True
MinIterationCount=15  WarmupCount=1

Method	Toolchain	Formatted	SkipValidation	Escaped	Mean	Error	Ratio	Allocated	Alloc Ratio
WriteStringsUtf8	Main	False	False	AllEscaped	21.915 ms	0.0837 ms	1.00	6963.06 KB	1.00
WriteStringsUtf8	PR	False	False	AllEscaped	21.959 ms	0.0641 ms	1.00	6963.06 KB	1.00
WriteStringsUtf16	Main	False	False	AllEscaped	23.884 ms	0.0694 ms	1.00	6963.03 KB	1.00
WriteStringsUtf16	PR	False	False	AllEscaped	23.959 ms	0.0479 ms	1.00	7736.68 KB	1.11
WriteStringsUtf8	Main	False	False	OneEscaped	5.278 ms	0.0247 ms	1.00	362.72 KB	1.00
WriteStringsUtf8	PR	False	False	OneEscaped	5.318 ms	0.0274 ms	1.01	362.72 KB	1.00
WriteStringsUtf16	Main	False	False	OneEscaped	7.024 ms	0.0132 ms	1.00	362.72 KB	1.00
WriteStringsUtf16	PR	False	False	OneEscaped	6.980 ms	0.0354 ms	0.99	362.72 KB	1.00
WriteStringsUtf8	Main	False	False	NoneEscaped	1.799 ms	0.0085 ms	1.00	121 KB	1.00
WriteStringsUtf8	PR	False	False	NoneEscaped	1.844 ms	0.0144 ms	1.03	121 KB	1.00
WriteStringsUtf16	Main	False	False	NoneEscaped	3.305 ms	0.0099 ms	1.00	217.69 KB	1.00
WriteStringsUtf16	PR	False	False	NoneEscaped	3.297 ms	0.0156 ms	1.00	217.69 KB	1.00
WriteStringsUtf8	Main	False	True	AllEscaped	21.964 ms	0.0819 ms	1.00	6963.06 KB	1.00
WriteStringsUtf8	PR	False	True	AllEscaped	21.995 ms	0.1002 ms	1.00	6963.06 KB	1.00
WriteStringsUtf16	Main	False	True	AllEscaped	23.996 ms	0.1016 ms	1.00	7736.68 KB	1.00
WriteStringsUtf16	PR	False	True	AllEscaped	23.715 ms	0.0627 ms	0.99	6963.03 KB	0.90
WriteStringsUtf8	Main	False	True	OneEscaped	5.215 ms	0.0312 ms	1.00	362.72 KB	1.00
WriteStringsUtf8	PR	False	True	OneEscaped	5.224 ms	0.0292 ms	1.00	362.72 KB	1.00
WriteStringsUtf16	Main	False	True	OneEscaped	6.990 ms	0.0167 ms	1.00	362.72 KB	1.00
WriteStringsUtf16	PR	False	True	OneEscaped	7.090 ms	0.0200 ms	1.01	362.72 KB	1.00
WriteStringsUtf8	Main	False	True	NoneEscaped	1.800 ms	0.0311 ms	1.00	121 KB	1.00
WriteStringsUtf8	PR	False	True	NoneEscaped	1.830 ms	0.0103 ms	1.02	121 KB	1.00
WriteStringsUtf16	Main	False	True	NoneEscaped	3.256 ms	0.0146 ms	1.00	217.69 KB	1.00
WriteStringsUtf16	PR	False	True	NoneEscaped	3.293 ms	0.0173 ms	1.01	217.69 KB	1.00
WriteStringsUtf8	Main	True	False	AllEscaped	22.261 ms	0.1469 ms	1.00	6963.06 KB	1.00
WriteStringsUtf8	PR	True	False	AllEscaped	22.313 ms	0.0434 ms	1.00	6963.06 KB	1.00
WriteStringsUtf16	Main	True	False	AllEscaped	23.778 ms	0.0662 ms	1.00	6963.03 KB	1.00
WriteStringsUtf16	PR	True	False	AllEscaped	23.921 ms	0.1243 ms	1.01	7736.68 KB	1.11
WriteStringsUtf8	Main	True	False	OneEscaped	5.536 ms	0.0483 ms	1.00	362.72 KB	1.00
WriteStringsUtf8	PR	True	False	OneEscaped	5.512 ms	0.0285 ms	1.00	362.72 KB	1.00
WriteStringsUtf16	Main	True	False	OneEscaped	7.286 ms	0.0250 ms	1.00	362.72 KB	1.00
WriteStringsUtf16	PR	True	False	OneEscaped	7.233 ms	0.0285 ms	0.99	362.72 KB	1.00
WriteStringsUtf8	Main	True	False	NoneEscaped	2.065 ms	0.0142 ms	1.00	136.1 KB	1.00
WriteStringsUtf8	PR	True	False	NoneEscaped	2.054 ms	0.0148 ms	0.99	136.1 KB	1.00
WriteStringsUtf16	Main	True	False	NoneEscaped	3.520 ms	0.0166 ms	1.00	217.69 KB	1.00
WriteStringsUtf16	PR	True	False	NoneEscaped	3.485 ms	0.0042 ms	0.99	217.69 KB	1.00
WriteStringsUtf8	Main	True	True	AllEscaped	22.261 ms	0.0795 ms	1.00	6963.06 KB	1.00
WriteStringsUtf8	PR	True	True	AllEscaped	22.265 ms	0.0635 ms	1.00	6963.06 KB	1.00
WriteStringsUtf16	Main	True	True	AllEscaped	23.836 ms	0.0787 ms	1.00	6963.03 KB	1.00
WriteStringsUtf16	PR	True	True	AllEscaped	23.736 ms	0.0679 ms	1.00	6963.03 KB	1.00
WriteStringsUtf8	Main	True	True	OneEscaped	5.487 ms	0.0234 ms	1.00	362.72 KB	1.00
WriteStringsUtf8	PR	True	True	OneEscaped	5.472 ms	0.0238 ms	1.00	362.72 KB	1.00
WriteStringsUtf16	Main	True	True	OneEscaped	7.177 ms	0.0306 ms	1.00	362.72 KB	1.00
WriteStringsUtf16	PR	True	True	OneEscaped	7.258 ms	0.0532 ms	1.01	362.72 KB	1.00
WriteStringsUtf8	Main	True	True	NoneEscaped	2.020 ms	0.0136 ms	1.00	136.1 KB	1.00
WriteStringsUtf8	PR	True	True	NoneEscaped	2.014 ms	0.0124 ms	1.00	136.1 KB	1.00
WriteStringsUtf16	Main	True	True	NoneEscaped	3.471 ms	0.0107 ms	1.00	217.69 KB	1.00
WriteStringsUtf16	PR	True	True	NoneEscaped	3.471 ms	0.0112 ms	1.00	217.69 KB	1.00

System.Text.Json.Tests.Perf_Deep

BenchmarkDotNet v0.16.0-nightly.20260518.1249, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.34 GB Total, 5.76 GB Available
  Job-NRQIIJ : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
  Job-NGSIDY : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
EvaluateOverhead=False  OutlierMode=DontRemove  PowerPlanMode=
IterationTime=250ms  MaxIterationCount=20  MemoryRandomization=True
MinIterationCount=15  WarmupCount=1

Method	Toolchain	Formatted	SkipValidation	Mean	Error	Ratio	Allocated	Alloc Ratio
WriteDeepUtf8	Main	False	False	2.462 ms	0.0034 ms	1.00	352 B	1.00
WriteDeepUtf8	PR	False	False	2.138 ms	0.0056 ms	0.87	352 B	1.00
WriteDeepUtf16	Main	False	False	2.478 ms	0.0058 ms	1.00	352 B	1.00
WriteDeepUtf16	PR	False	False	2.368 ms	0.0042 ms	0.96	352 B	1.00
WriteDeepUtf8	Main	False	True	2.354 ms	0.0049 ms	1.00	136 B	1.00
WriteDeepUtf8	PR	False	True	2.046 ms	0.0021 ms	0.87	136 B	1.00
WriteDeepUtf16	Main	False	True	2.403 ms	0.0027 ms	1.00	136 B	1.00
WriteDeepUtf16	PR	False	True	2.273 ms	0.0050 ms	0.95	136 B	1.00
WriteDeepUtf8	Main	True	False	10.894 ms	0.0518 ms	1.00	352 B	1.00
WriteDeepUtf8	PR	True	False	10.983 ms	0.0273 ms	1.01	352 B	1.00
WriteDeepUtf16	Main	True	False	10.766 ms	0.0541 ms	1.00	352 B	1.00
WriteDeepUtf16	PR	True	False	10.784 ms	0.0509 ms	1.00	352 B	1.00
WriteDeepUtf8	Main	True	True	10.816 ms	0.0787 ms	1.00	136 B	1.00
WriteDeepUtf8	PR	True	True	10.758 ms	0.0404 ms	0.99	136 B	1.00
WriteDeepUtf16	Main	True	True	10.806 ms	0.0553 ms	1.00	136 B	1.00
WriteDeepUtf16	PR	True	True	10.750 ms	0.0405 ms	0.99	136 B	1.00

System.Text.Json.Serialization.Tests.WriteJson_Int32_

BenchmarkDotNet v0.16.0-nightly.20260518.1249, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.34 GB Total, 5.76 GB Available
  Job-TPEJOW : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
  Job-HKHXHK : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
EvaluateOverhead=False  OutlierMode=Default  PowerPlanMode=
IterationTime=250ms  MaxIterationCount=20  MemoryRandomization=Default
MinIterationCount=15  WarmupCount=1

Method	Toolchain	Mode	Mean	Error	Ratio	Allocated	Alloc Ratio
SerializeToWriter	Main	Reflection	19.16 ns	0.022 ns	1.00	-	NA
SerializeToWriter	PR	Reflection	19.10 ns	0.019 ns	1.00	-	NA
SerializeToWriter	Main	SourceGen	18.94 ns	0.017 ns	1.00	-	NA
SerializeToWriter	PR	SourceGen	19.08 ns	0.019 ns	1.01	-	NA

System.Text.Json.Serialization.Tests.WriteJson_TreeRecord_

BenchmarkDotNet v0.16.0-nightly.20260518.1249, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.34 GB Total, 5.76 GB Available
  Job-TPEJOW : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
  Job-HKHXHK : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
EvaluateOverhead=False  OutlierMode=Default  PowerPlanMode=
IterationTime=250ms  MaxIterationCount=20  MemoryRandomization=Default
MinIterationCount=15  WarmupCount=1

Method	Toolchain	Mode	Mean	Error	Ratio	Allocated	Alloc Ratio
SerializeToWriter	Main	Reflection	5.947 μs	0.0177 μs	1.00	912 B	1.00
SerializeToWriter	PR	Reflection	5.747 μs	0.0075 μs	0.97	912 B	1.00
SerializeToWriter	Main	SourceGen	6.177 μs	0.0065 μs	1.00	912 B	1.00
SerializeToWriter	PR	SourceGen	6.009 μs	0.0033 μs	0.97	912 B	1.00

System.Text.Json.Serialization.Tests.WriteJson_StructRecord_

BenchmarkDotNet v0.16.0-nightly.20260518.1249, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.34 GB Total, 5.76 GB Available
  Job-TPEJOW : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
  Job-HKHXHK : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
EvaluateOverhead=False  OutlierMode=Default  PowerPlanMode=
IterationTime=250ms  MaxIterationCount=20  MemoryRandomization=Default
MinIterationCount=15  WarmupCount=1

Method	Toolchain	Mode	Mean	Error	Ratio	Allocated	Alloc Ratio
SerializeToWriter	Main	Reflection	136.31 ns	0.172 ns	1.00	48 B	1.00
SerializeToWriter	PR	Reflection	136.84 ns	0.206 ns	1.00	48 B	1.00
SerializeToWriter	Main	SourceGen	98.93 ns	0.057 ns	1.00	-	NA
SerializeToWriter	PR	SourceGen	98.75 ns	0.032 ns	1.00	-	NA

System.Text.Json.Serialization.Tests.WriteJson_ClassRecord_

BenchmarkDotNet v0.16.0-nightly.20260518.1249, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.34 GB Total, 5.76 GB Available
  Job-TPEJOW : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
  Job-HKHXHK : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
EvaluateOverhead=False  OutlierMode=Default  PowerPlanMode=
IterationTime=250ms  MaxIterationCount=20  MemoryRandomization=Default
MinIterationCount=15  WarmupCount=1

Method	Toolchain	Mode	Mean	Error	Ratio	Allocated	Alloc Ratio
SerializeToWriter	Main	Reflection	149.63 ns	0.088 ns	1.00	-	NA
SerializeToWriter	PR	Reflection	151.32 ns	0.065 ns	1.01	-	NA
SerializeToWriter	Main	SourceGen	91.86 ns	0.052 ns	1.00	-	NA
SerializeToWriter	PR	SourceGen	92.77 ns	0.046 ns	1.01	-	NA

System.Text.Json.Serialization.Tests.WriteJson_Nullable_DateTimeOffset__

BenchmarkDotNet v0.16.0-nightly.20260518.1249, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.34 GB Total, 5.76 GB Available
  Job-TPEJOW : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
  Job-HKHXHK : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
EvaluateOverhead=False  OutlierMode=Default  PowerPlanMode=
IterationTime=250ms  MaxIterationCount=20  MemoryRandomization=Default
MinIterationCount=15  WarmupCount=1

Method	Toolchain	Mode	Mean	Error	Ratio	Allocated	Alloc Ratio
SerializeToWriter	Main	Reflection	48.48 ns	0.033 ns	1.00	-	NA
SerializeToWriter	PR	Reflection	48.67 ns	0.097 ns	1.00	-	NA
SerializeToWriter	Main	SourceGen	48.71 ns	0.076 ns	1.00	-	NA
SerializeToWriter	PR	SourceGen	48.89 ns	0.045 ns	1.00	-	NA

System.Text.Json.Serialization.Tests.WriteJson_LargeStructWithProperties_

BenchmarkDotNet v0.16.0-nightly.20260518.1249, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.34 GB Total, 5.76 GB Available
  Job-TPEJOW : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
  Job-HKHXHK : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
EvaluateOverhead=False  OutlierMode=Default  PowerPlanMode=
IterationTime=250ms  MaxIterationCount=20  MemoryRandomization=Default
MinIterationCount=15  WarmupCount=1

Method	Toolchain	Mode	Mean	Error	Ratio	Allocated	Alloc Ratio
SerializeToWriter	Main	Reflection	210.7 ns	0.27 ns	1.00	80 B	1.00
SerializeToWriter	PR	Reflection	213.6 ns	0.47 ns	1.01	80 B	1.00
SerializeToWriter	Main	SourceGen	148.8 ns	0.10 ns	1.00	-	NA
SerializeToWriter	PR	SourceGen	148.4 ns	0.21 ns	1.00	-	NA

System.Text.Json.Serialization.Tests.WriteJson_SimpleStructWithProperties_

BenchmarkDotNet v0.16.0-nightly.20260518.1249, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.34 GB Total, 5.76 GB Available
  Job-TPEJOW : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
  Job-HKHXHK : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
EvaluateOverhead=False  OutlierMode=Default  PowerPlanMode=
IterationTime=250ms  MaxIterationCount=20  MemoryRandomization=Default
MinIterationCount=15  WarmupCount=1

Method	Toolchain	Mode	Mean	Error	Ratio	Allocated	Alloc Ratio
SerializeToWriter	Main	Reflection	66.00 ns	0.063 ns	1.00	32 B	1.00
SerializeToWriter	PR	Reflection	70.00 ns	0.105 ns	1.06	32 B	1.00
SerializeToWriter	Main	SourceGen	43.60 ns	0.100 ns	1.00	-	NA
SerializeToWriter	PR	SourceGen	43.63 ns	0.042 ns	1.00	-	NA

System.Text.Json.Serialization.Tests.WriteJson_Hashtable_

BenchmarkDotNet v0.16.0-nightly.20260518.1249, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.34 GB Total, 5.76 GB Available
  Job-TPEJOW : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
  Job-HKHXHK : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
EvaluateOverhead=False  OutlierMode=Default  PowerPlanMode=
IterationTime=250ms  MaxIterationCount=20  MemoryRandomization=Default
MinIterationCount=15  WarmupCount=1

Method	Toolchain	Mode	Mean	Error	Ratio	Allocated	Alloc Ratio
SerializeToWriter	Main	Reflection	4.535 μs	0.0025 μs	1.00	56 B	1.00
SerializeToWriter	PR	Reflection	4.512 μs	0.0144 μs	0.99	56 B	1.00
SerializeToWriter	Main	SourceGen	4.304 μs	0.0128 μs	1.00	56 B	1.00
SerializeToWriter	PR	SourceGen	4.337 μs	0.0055 μs	1.01	56 B	1.00

System.Text.Json.Serialization.Tests.WriteJson_ArrayList_

BenchmarkDotNet v0.16.0-nightly.20260518.1249, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.34 GB Total, 5.76 GB Available
  Job-TPEJOW : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
  Job-HKHXHK : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
EvaluateOverhead=False  OutlierMode=Default  PowerPlanMode=
IterationTime=250ms  MaxIterationCount=20  MemoryRandomization=Default
MinIterationCount=15  WarmupCount=1

Method	Toolchain	Mode	Mean	Error	Ratio	Allocated	Alloc Ratio
SerializeToWriter	Main	Reflection	2.124 μs	0.0005 μs	1.00	-	NA
SerializeToWriter	PR	Reflection	2.129 μs	0.0008 μs	1.00	-	NA
SerializeToWriter	Main	SourceGen	2.654 μs	0.0015 μs	1.00	-	NA
SerializeToWriter	PR	SourceGen	2.747 μs	0.0011 μs	1.04	-	NA

System.Text.Json.Serialization.Tests.WriteJson_HashSet_String__

BenchmarkDotNet v0.16.0-nightly.20260518.1249, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.34 GB Total, 5.76 GB Available
  Job-TPEJOW : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
  Job-HKHXHK : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
EvaluateOverhead=False  OutlierMode=Default  PowerPlanMode=
IterationTime=250ms  MaxIterationCount=20  MemoryRandomization=Default
MinIterationCount=15  WarmupCount=1

Method	Toolchain	Mode	Mean	Error	Ratio	Allocated	Alloc Ratio
SerializeToWriter	Main	Reflection	1.707 μs	0.0048 μs	1.00	40 B	1.00
SerializeToWriter	PR	Reflection	1.682 μs	0.0031 μs	0.99	40 B	1.00
SerializeToWriter	Main	SourceGen	1.244 μs	0.0006 μs	1.00	-	NA
SerializeToWriter	PR	SourceGen	1.216 μs	0.0004 μs	0.98	-	NA

System.Text.Json.Serialization.Tests.WriteJson_ImmutableSortedDictionary_String, String__

BenchmarkDotNet v0.16.0-nightly.20260518.1249, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.34 GB Total, 5.76 GB Available
  Job-TPEJOW : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
  Job-HKHXHK : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
EvaluateOverhead=False  OutlierMode=Default  PowerPlanMode=
IterationTime=250ms  MaxIterationCount=20  MemoryRandomization=Default
MinIterationCount=15  WarmupCount=1

Method	Toolchain	Mode	Mean	Error	Ratio	Allocated	Alloc Ratio
SerializeToWriter	Main	Reflection	3.637 μs	0.0066 μs	1.00	56 B	1.00
SerializeToWriter	PR	Reflection	3.591 μs	0.0035 μs	0.99	56 B	1.00
SerializeToWriter	Main	SourceGen	3.587 μs	0.0023 μs	1.00	-	NA
SerializeToWriter	PR	SourceGen	3.640 μs	0.0018 μs	1.01	-	NA

System.Text.Json.Serialization.Tests.WriteJson_ImmutableDictionary_String, String__

BenchmarkDotNet v0.16.0-nightly.20260518.1249, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.34 GB Total, 5.76 GB Available
  Job-TPEJOW : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
  Job-HKHXHK : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
EvaluateOverhead=False  OutlierMode=Default  PowerPlanMode=
IterationTime=250ms  MaxIterationCount=20  MemoryRandomization=Default
MinIterationCount=15  WarmupCount=1

Method	Toolchain	Mode	Mean	Error	Ratio	Allocated	Alloc Ratio
SerializeToWriter	Main	Reflection	5.264 μs	0.0584 μs	1.00	152 B	1.00
SerializeToWriter	PR	Reflection	6.673 μs	0.0061 μs	1.27	152 B	1.00
SerializeToWriter	Main	SourceGen	5.969 μs	0.0027 μs	1.00	-	NA
SerializeToWriter	PR	SourceGen	5.396 μs	0.0046 μs	0.90	-	NA

System.Text.Json.Serialization.Tests.WriteJson_Dictionary_String, String__

BenchmarkDotNet v0.16.0-nightly.20260518.1249, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.34 GB Total, 5.76 GB Available
  Job-TPEJOW : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
  Job-HKHXHK : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
EvaluateOverhead=False  OutlierMode=Default  PowerPlanMode=
IterationTime=250ms  MaxIterationCount=20  MemoryRandomization=Default
MinIterationCount=15  WarmupCount=1

Method	Toolchain	Mode	Mean	Error	Ratio	Allocated	Alloc Ratio
SerializeToWriter	Main	Reflection	2.651 μs	0.0020 μs	1.00	-	NA
SerializeToWriter	PR	Reflection	2.578 μs	0.0016 μs	0.97	-	NA
SerializeToWriter	Main	SourceGen	2.201 μs	0.0025 μs	1.00	-	NA
SerializeToWriter	PR	SourceGen	2.186 μs	0.0039 μs	0.99	-	NA

System.Text.Json.Serialization.Tests.WriteJson_BinaryDataPayload_

BenchmarkDotNet v0.16.0-nightly.20260518.1249, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.34 GB Total, 5.76 GB Available
  Job-TPEJOW : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
  Job-HKHXHK : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
EvaluateOverhead=False  OutlierMode=Default  PowerPlanMode=
IterationTime=250ms  MaxIterationCount=20  MemoryRandomization=Default
MinIterationCount=15  WarmupCount=1

Method	Toolchain	Mode	Mean	Error	Ratio	Allocated	Alloc Ratio
SerializeToWriter	Main	Reflection	80.82 ns	0.099 ns	1.00	-	NA
SerializeToWriter	PR	Reflection	80.11 ns	0.037 ns	0.99	-	NA
SerializeToWriter	Main	SourceGen	62.47 ns	0.050 ns	1.00	-	NA
SerializeToWriter	PR	SourceGen	62.67 ns	0.122 ns	1.00	-	NA

System.Text.Json.Serialization.Tests.WriteJson_MyEventsListerViewModel_

BenchmarkDotNet v0.16.0-nightly.20260518.1249, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.34 GB Total, 5.76 GB Available
  Job-TPEJOW : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
  Job-HKHXHK : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
EvaluateOverhead=False  OutlierMode=Default  PowerPlanMode=
IterationTime=250ms  MaxIterationCount=20  MemoryRandomization=Default
MinIterationCount=15  WarmupCount=1

Method	Toolchain	Mode	Mean	Error	Ratio	Allocated	Alloc Ratio
SerializeToWriter	Main	Reflection	137.8 μs	1.02 μs	1.00	108.3 KB	1.00
SerializeToWriter	PR	Reflection	133.7 μs	0.96 μs	0.97	108.3 KB	1.00
SerializeToWriter	Main	SourceGen	118.3 μs	0.62 μs	1.00	108 KB	1.00
SerializeToWriter	PR	SourceGen	115.7 μs	0.33 μs	0.98	108 KB	1.00

System.Text.Json.Serialization.Tests.WriteJson_IndexViewModel_

BenchmarkDotNet v0.16.0-nightly.20260518.1249, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.34 GB Total, 5.76 GB Available
  Job-TPEJOW : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
  Job-HKHXHK : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
EvaluateOverhead=False  OutlierMode=Default  PowerPlanMode=
IterationTime=250ms  MaxIterationCount=20  MemoryRandomization=Default
MinIterationCount=15  WarmupCount=1

Method	Toolchain	Mode	Mean	Error	Ratio	Allocated	Alloc Ratio
SerializeToWriter	Main	Reflection	5.298 μs	0.0116 μs	1.00	312 B	1.00
SerializeToWriter	PR	Reflection	5.246 μs	0.0039 μs	0.99	312 B	1.00
SerializeToWriter	Main	SourceGen	3.758 μs	0.0015 μs	1.00	-	NA
SerializeToWriter	PR	SourceGen	3.721 μs	0.0027 μs	0.99	-	NA

System.Text.Json.Serialization.Tests.WriteJson_Location_

BenchmarkDotNet v0.16.0-nightly.20260518.1249, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.34 GB Total, 5.76 GB Available
  Job-TPEJOW : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
  Job-HKHXHK : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
EvaluateOverhead=False  OutlierMode=Default  PowerPlanMode=
IterationTime=250ms  MaxIterationCount=20  MemoryRandomization=Default
MinIterationCount=15  WarmupCount=1

Method	Toolchain	Mode	Mean	Error	Ratio	Allocated	Alloc Ratio
SerializeToWriter	Main	Reflection	261.2 ns	0.55 ns	1.00	-	NA
SerializeToWriter	PR	Reflection	261.4 ns	0.48 ns	1.00	-	NA
SerializeToWriter	Main	SourceGen	202.0 ns	0.13 ns	1.00	-	NA
SerializeToWriter	PR	SourceGen	203.0 ns	0.09 ns	1.00	-	NA

System.Text.Json.Serialization.Tests.WriteJson_LoginViewModel_

BenchmarkDotNet v0.16.0-nightly.20260518.1249, Linux Ubuntu 24.04.4 LTS (Noble Numbat)
AMD EPYC 9V74 2.60GHz, 1 CPU, 8 logical and 4 physical cores
Memory: 31.34 GB Total, 5.76 GB Available
  Job-TPEJOW : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
  Job-HKHXHK : .NET 11.0.0 (11.0.0-dev, 42.42.42.42424), X64 RyuJIT x86-64-v4
EvaluateOverhead=False  OutlierMode=Default  PowerPlanMode=
IterationTime=250ms  MaxIterationCount=20  MemoryRandomization=Default
MinIterationCount=15  WarmupCount=1

Method	Toolchain	Mode	Mean	Error	Ratio	Allocated	Alloc Ratio
SerializeToWriter	Main	Reflection	109.55 ns	0.131 ns	1.00	-	NA
SerializeToWriter	PR	Reflection	104.80 ns	0.096 ns	0.96	-	NA
SerializeToWriter	Main	SourceGen	63.96 ns	0.033 ns	1.00	-	NA
SerializeToWriter	PR	SourceGen	66.77 ns	0.090 ns	1.04	-	NA

Artifacts:

• BDN_Artifacts.zip (319 KB)
• results.md (39 KB)

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