Benchmark for de/serializing different objects with multiple tools:
JilNetJSONNewtonsoft.JsonSpanJsonUtf8JsonSystem.Text.Json
Objects:
Definitely in different object types and different scenarios the result can vary but in general SpanJson wins both in execution time (faster) as well as memory allocation (less allocation).
Note: System.Text.Json source generator tested as well but there were not big enhancements in these 3 cases (SuperSimple/Simple/Complex objects) so I removed it.
Benchmark Environment:
BenchmarkDotNet v0.13.7, Windows 11 (10.0.22621.1992/22H2/2022Update/SunValley2)
AMD Ryzen 7 5800H with Radeon Graphics, 1 CPU, 16 logical and 8 physical cores
.NET SDK 7.0.103
[Host] : .NET 7.0.3 (7.0.323.6910), X64 RyuJIT AVX2
ShortRun : .NET 7.0.3 (7.0.323.6910), X64 RyuJIT AVX2
Job=ShortRun Jit=RyuJit Platform=X64
Runtime=.NET 7.0 IterationCount=3 LaunchCount=1
WarmupCount=3
object:
{
"Age": 20,
"Name": "Amir H. Jabari"
}SERIALIZATION:
| Method | Mean | Error | StdDev | Ratio | RatioSD | Rank | Gen0 | Gen1 | Allocated | Alloc Ratio |
|---------------------- |----------:|----------:|----------:|------:|--------:|-----:|-------:|-------:|----------:|------------:|
| Jil_String | 170.60 ns | 64.86 ns | 3.555 ns | 1.46 | 0.09 | 6 | 0.0648 | - | 544 B | 8.50 |
| NetJSON_String | 116.14 ns | 40.90 ns | 2.242 ns | 0.99 | 0.02 | 3 | 0.0172 | - | 144 B | 2.25 |
| Newtonsoft_String | 456.76 ns | 57.11 ns | 3.130 ns | 3.90 | 0.16 | 9 | 0.1693 | 0.0005 | 1416 B | 22.12 |
| SpanJson_String | 145.58 ns | 25.69 ns | 1.408 ns | 1.24 | 0.05 | 5 | 0.0200 | - | 168 B | 2.62 |
| SystemTextJson_String | 203.68 ns | 29.35 ns | 1.609 ns | 1.74 | 0.06 | 7 | 0.0124 | - | 104 B | 1.62 |
| Utf8Json_String | 91.63 ns | 36.81 ns | 2.018 ns | 0.78 | 0.01 | 2 | 0.0124 | - | 104 B | 1.62 |
| Jil_Bytes | 206.99 ns | 64.40 ns | 3.530 ns | 1.77 | 0.05 | 8 | 0.0744 | - | 624 B | 9.75 |
| NetJSON_Bytes | 142.34 ns | 61.43 ns | 3.367 ns | 1.22 | 0.06 | 4 | 0.0257 | - | 216 B | 3.38 |
| Newtonsoft_Bytes | 521.04 ns | 450.81 ns | 24.710 ns | 4.45 | 0.32 | 10 | 0.1774 | - | 1488 B | 23.25 |
| SpanJson_Bytes | 117.17 ns | 88.43 ns | 4.847 ns | 1.00 | 0.00 | 3 | 0.0076 | - | 64 B | 1.00 |
| SystemTextJson_Bytes | 206.61 ns | 82.88 ns | 4.543 ns | 1.77 | 0.11 | 8 | 0.0086 | - | 72 B | 1.12 |
| Utf8Json_Bytes | 89.94 ns | 213.25 ns | 11.689 ns | 0.77 | 0.12 | 1 | 0.0086 | - | 72 B | 1.12 |
DESERIALIZATION:
| Method | Mean | Error | StdDev | Ratio | RatioSD | Rank | Gen0 | Gen1 | Allocated | Alloc Ratio |
|---------------------- |------------:|-----------:|----------:|------:|--------:|-----:|-------:|-------:|----------:|------------:|
| Jil_String | 125.96 ns | 52.524 ns | 2.879 ns | 1.36 | 0.03 | 2 | 0.0210 | - | 176 B | 2.00 |
| NetJSON_String | 218.51 ns | 110.288 ns | 6.045 ns | 2.36 | 0.06 | 7 | 0.0238 | - | 200 B | 2.27 |
| Newtonsoft_String | 980.56 ns | 409.723 ns | 22.458 ns | 10.58 | 0.18 | 11 | 0.3204 | - | 2688 B | 30.55 |
| SpanJson_String | 127.85 ns | 7.664 ns | 0.420 ns | 1.38 | 0.01 | 3 | 0.0172 | - | 144 B | 1.64 |
| SystemTextJson_String | 323.74 ns | 167.956 ns | 9.206 ns | 3.49 | 0.09 | 10 | 0.0095 | - | 80 B | 0.91 |
| Utf8Json_String | 171.97 ns | 87.940 ns | 4.820 ns | 1.85 | 0.05 | 6 | 0.0172 | - | 144 B | 1.64 |
| Jil_Bytes | 160.76 ns | 7.743 ns | 0.424 ns | 1.73 | 0.01 | 5 | 0.0343 | - | 288 B | 3.27 |
| NetJSON_Bytes | 243.69 ns | 32.301 ns | 1.771 ns | 2.63 | 0.03 | 8 | 0.0343 | - | 288 B | 3.27 |
| Newtonsoft_Bytes | 1,181.75 ns | 624.721 ns | 34.243 ns | 12.75 | 0.30 | 12 | 0.3376 | 0.0019 | 2824 B | 32.09 |
| SpanJson_Bytes | 92.71 ns | 10.329 ns | 0.566 ns | 1.00 | 0.00 | 1 | 0.0105 | - | 88 B | 1.00 |
| SystemTextJson_Bytes | 274.26 ns | 404.983 ns | 22.198 ns | 2.96 | 0.25 | 9 | 0.0105 | - | 88 B | 1.00 |
| Utf8Json_Bytes | 129.51 ns | 19.648 ns | 1.077 ns | 1.40 | 0.00 | 4 | 0.0095 | - | 80 B | 0.91 |
object:
{
"DayOfWeek": "Monday",
"Guid": "2517056e-a9b1-43ce-8287-0fa2db6a9431",
"Sbyte": 115,
"Byte": 87,
"Short": -6802,
"Ushort": 54753,
"Int": 1631550698,
"Uint": 541273253,
"Long": 693967912,
"Ulong": 178489719,
"Float": -25660.783,
"Double": 1205673527.7033145,
"Decimal": 1341589533.480338932238677,
"String": "Corene Muller",
"Char": "\uC91C",
"False": false,
"True": true,
"DateTime": "2023-08-09T08:44:27.0601407Z",
"Nullable": null
}SERIALIZATION:
| Method | Mean | Error | StdDev | Ratio | RatioSD | Rank | Gen0 | Gen1 | Allocated | Alloc Ratio |
|---------------------- |-----------:|----------:|---------:|------:|--------:|-----:|-------:|-------:|----------:|------------:|
| Jil_String | 941.9 ns | 88.30 ns | 4.84 ns | 1.22 | 0.04 | 3 | 0.3452 | 0.0019 | 2888 B | 7.08 |
| NetJSON_String | 1,230.7 ns | 180.51 ns | 9.89 ns | 1.60 | 0.03 | 7 | 0.1945 | - | 1640 B | 4.02 |
| Newtonsoft_String | 2,687.0 ns | 213.64 ns | 11.71 ns | 3.49 | 0.11 | 11 | 0.4463 | - | 3736 B | 9.16 |
| SpanJson_String | 889.0 ns | 26.26 ns | 1.44 ns | 1.16 | 0.03 | 2 | 0.1411 | - | 1184 B | 2.90 |
| SystemTextJson_String | 1,535.0 ns | 419.02 ns | 22.97 ns | 2.00 | 0.04 | 10 | 0.0992 | - | 840 B | 2.06 |
| Utf8Json_String | 1,126.7 ns | 125.08 ns | 6.86 ns | 1.46 | 0.03 | 6 | 0.1144 | - | 960 B | 2.35 |
| Jil_Bytes | 1,086.7 ns | 624.21 ns | 34.21 ns | 1.41 | 0.06 | 5 | 0.3948 | 0.0019 | 3312 B | 8.12 |
| NetJSON_Bytes | 1,408.1 ns | 649.14 ns | 35.58 ns | 1.83 | 0.09 | 8 | 0.2422 | - | 2032 B | 4.98 |
| Newtonsoft_Bytes | 2,669.1 ns | 859.07 ns | 47.09 ns | 3.47 | 0.14 | 11 | 0.4921 | - | 4144 B | 10.16 |
| SpanJson_Bytes | 769.6 ns | 407.25 ns | 22.32 ns | 1.00 | 0.00 | 1 | 0.0486 | - | 408 B | 1.00 |
| SystemTextJson_Bytes | 1,432.3 ns | 77.61 ns | 4.25 ns | 1.86 | 0.05 | 9 | 0.0534 | - | 448 B | 1.10 |
| Utf8Json_Bytes | 998.7 ns | 85.47 ns | 4.68 ns | 1.30 | 0.04 | 4 | 0.0687 | - | 584 B | 1.43 |
DESERIALIZATION:
| Method | Mean | Error | StdDev | Ratio | RatioSD | Rank | Gen0 | Allocated | Alloc Ratio |
|---------------------- |-----------:|------------:|----------:|------:|--------:|-----:|-------:|----------:|------------:|
| Jil_String | 1,672.8 ns | 226.88 ns | 12.44 ns | 1.84 | 0.01 | 5 | 0.0648 | 544 B | 3.09 |
| NetJSON_String | 2,687.4 ns | 359.09 ns | 19.68 ns | 2.96 | 0.03 | 9 | 0.2060 | 1752 B | 9.95 |
| Newtonsoft_String | 5,077.5 ns | 412.17 ns | 22.59 ns | 5.59 | 0.04 | 11 | 0.4272 | 3600 B | 20.45 |
| SpanJson_String | 1,030.2 ns | 126.57 ns | 6.94 ns | 1.13 | 0.01 | 2 | 0.0725 | 608 B | 3.45 |
| SystemTextJson_String | 2,002.5 ns | 213.21 ns | 11.69 ns | 2.20 | 0.01 | 8 | 0.0191 | 176 B | 1.00 |
| Utf8Json_String | 1,614.4 ns | 84.65 ns | 4.64 ns | 1.78 | 0.01 | 4 | 0.0839 | 704 B | 4.00 |
| Jil_Bytes | 1,841.1 ns | 322.56 ns | 17.68 ns | 2.03 | 0.02 | 6 | 0.1621 | 1360 B | 7.73 |
| NetJSON_Bytes | 2,962.1 ns | 503.19 ns | 27.58 ns | 3.26 | 0.04 | 10 | 0.3052 | 2560 B | 14.55 |
| Newtonsoft_Bytes | 5,328.8 ns | 631.81 ns | 34.63 ns | 5.86 | 0.05 | 12 | 0.5264 | 4440 B | 25.23 |
| SpanJson_Bytes | 909.0 ns | 50.73 ns | 2.78 ns | 1.00 | 0.00 | 1 | 0.0210 | 176 B | 1.00 |
| SystemTextJson_Bytes | 1,936.0 ns | 2,170.74 ns | 118.99 ns | 2.13 | 0.13 | 7 | 0.0210 | 176 B | 1.00 |
| Utf8Json_Bytes | 1,504.3 ns | 224.11 ns | 12.28 ns | 1.65 | 0.01 | 3 | 0.0324 | 280 B | 1.59 |
object:
{
"DayOfWeek": "Monday",
"ArrDayOfWeek": [...],
"Guid": "a57fa617-6de3-4f0c-baa7-15d24b78450e",
"ArrGuid": [...],
"Sbyte": -91,
"Byte": 22,
"ArrSbyte": [...],
"ArrByte": [...],
"Short": -11190,
"Ushort": 3155,
"ArrShort": [...],
"ArrUshort": [...],
"Int": 322109475,
"Uint": 935014617,
"ArrInt": [...],
"ArrUint": [...],
"Long": 11825110,
"Ulong": 1589199871,
"ArrLong": [...],
"ArrUlong": [...],
"Float": 24319.451,
"Double": 963420005.2432929,
"Decimal": 447680652.812708440149533,
"ArrFloat": [...],
"ArrDouble": [...],
"ArrDecimal": [...],
"String": "Chanel Watsica",
"Char": "\uA645",
"ArrString": [...],
"ArrChar": [...],
"False": false,
"True": true,
"ArrFalse": [...],
"ArrTrue": [...],
"DateTime": "2023-08-09T08:46:02.1238559Z",
"Nullable": null,
"ArrDateTime": [...],
"ArrNullable": [...],
"NestedClass": {
"DayOfWeek": "Thursday",
"Guid": "1feae83b-d1a0-4abf-9cc5-607e7e1d25dd",
"Sbyte": 65,
"Byte": 96,
"Short": 11441,
"Ushort": 39016,
"Int": 1852719280,
"Uint": 1823129087,
"Long": 1169426995,
"Ulong": 1700782883,
"Float": -22957.865,
"Double": 685910393.3421444,
"Decimal": 429821250.70247557605732,
"String": "Hobart Cormier",
"Char": "\uCBF9",
"False": false,
"True": true,
"DateTime": "2023-08-09T08:46:02.1246572Z",
"Nullable": null
},
"ArrNestedClass": [...]
}SERIALIZATION:
| Method | Mean | Error | StdDev | Ratio | RatioSD | Rank | Gen0 | Gen1 | Allocated | Alloc Ratio |
|---------------------- |----------:|----------:|----------:|------:|--------:|-----:|-------:|-------:|----------:|------------:|
| Jil_String | 9.812 μs | 2.8459 μs | 0.1560 μs | 1.16 | 0.01 | 3 | 2.7008 | 0.1068 | 22.1 KB | 5.48 |
| NetJSON_String | 14.176 μs | 4.1052 μs | 0.2250 μs | 1.68 | 0.02 | 7 | 2.2125 | - | 18.12 KB | 4.49 |
| Newtonsoft_String | 30.533 μs | 1.9727 μs | 0.1081 μs | 3.61 | 0.01 | 11 | 3.6621 | 0.0916 | 30.17 KB | 7.48 |
| SpanJson_String | 9.528 μs | 3.7369 μs | 0.2048 μs | 1.13 | 0.02 | 2 | 1.4648 | - | 12.07 KB | 2.99 |
| SystemTextJson_String | 16.099 μs | 1.6895 μs | 0.0926 μs | 1.90 | 0.01 | 10 | 1.0681 | - | 8.96 KB | 2.22 |
| Utf8Json_String | 12.726 μs | 1.6417 μs | 0.0900 μs | 1.50 | 0.00 | 6 | 1.2207 | - | 10.03 KB | 2.49 |
| Jil_Bytes | 10.682 μs | 0.6454 μs | 0.0354 μs | 1.26 | 0.01 | 4 | 3.1433 | 0.0916 | 25.7 KB | 6.38 |
| NetJSON_Bytes | 15.193 μs | 3.2670 μs | 0.1791 μs | 1.80 | 0.01 | 8 | 2.7008 | - | 22.12 KB | 5.49 |
| Newtonsoft_Bytes | 31.931 μs | 3.7113 μs | 0.2034 μs | 3.77 | 0.01 | 12 | 4.1504 | 0.1221 | 34.23 KB | 8.49 |
| SpanJson_Bytes | 8.460 μs | 0.7523 μs | 0.0412 μs | 1.00 | 0.00 | 1 | 0.4883 | - | 4.03 KB | 1.00 |
| SystemTextJson_Bytes | 15.605 μs | 0.8849 μs | 0.0485 μs | 1.84 | 0.01 | 9 | 0.5798 | - | 4.79 KB | 1.19 |
| Utf8Json_Bytes | 11.687 μs | 1.1750 μs | 0.0644 μs | 1.38 | 0.01 | 5 | 0.7324 | - | 5.98 KB | 1.48 |
DESERIALIZATION:
| Method | Mean | Error | StdDev | Ratio | RatioSD | Rank | Gen0 | Gen1 | Allocated | Alloc Ratio |
|---------------------- |---------:|----------:|---------:|------:|--------:|-----:|-------:|-------:|----------:|------------:|
| Jil_String | 21.58 μs | 1.104 μs | 0.061 μs | 1.63 | 0.02 | 3 | 1.0986 | - | 9.04 KB | 3.32 |
| NetJSON_String | 32.94 μs | 1.775 μs | 0.097 μs | 2.48 | 0.03 | 9 | 2.6245 | - | 21.64 KB | 7.96 |
| Newtonsoft_String | 62.99 μs | 37.604 μs | 2.061 μs | 4.75 | 0.18 | 11 | 2.1973 | - | 17.97 KB | 6.61 |
| SpanJson_String | 16.75 μs | 11.188 μs | 0.613 μs | 1.26 | 0.04 | 2 | 0.8392 | 0.0153 | 6.89 KB | 2.53 |
| SystemTextJson_String | 29.37 μs | 1.974 μs | 0.108 μs | 2.21 | 0.01 | 7 | 0.7324 | - | 6.02 KB | 2.22 |
| Utf8Json_String | 25.99 μs | 16.012 μs | 0.878 μs | 1.96 | 0.06 | 5 | 1.1292 | - | 9.45 KB | 3.47 |
| Jil_Bytes | 26.60 μs | 5.495 μs | 0.301 μs | 2.00 | 0.04 | 6 | 2.1057 | 0.0610 | 17.28 KB | 6.36 |
| NetJSON_Bytes | 39.10 μs | 4.721 μs | 0.259 μs | 2.95 | 0.01 | 10 | 3.6621 | - | 29.91 KB | 11.00 |
| Newtonsoft_Bytes | 73.24 μs | 20.680 μs | 1.134 μs | 5.52 | 0.04 | 12 | 3.1738 | 0.1221 | 26.21 KB | 9.64 |
| SpanJson_Bytes | 13.27 μs | 2.194 μs | 0.120 μs | 1.00 | 0.00 | 1 | 0.3204 | - | 2.72 KB | 1.00 |
| SystemTextJson_Bytes | 30.02 μs | 23.686 μs | 1.298 μs | 2.26 | 0.12 | 8 | 0.7324 | - | 6.02 KB | 2.21 |
| Utf8Json_Bytes | 22.10 μs | 5.922 μs | 0.325 μs | 1.66 | 0.03 | 4 | 0.6409 | - | 5.33 KB | 1.96 |
Any contribution is appreciated.