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JsonPayloadDeserialization.md

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Deserializing of JSON response

Should you read string data and then deserialize or deserialize response stream right away?

Deserialization is run multiple times for each iteration (to avoid short runs). Number of repeats per iteration differs per input size (small input is repeated more than large input), see JsonPayloadDeserialization.cs for details.

Reading:

Small JSON response

JSON example: here.

BenchmarkDotNet=v0.13.1, OS=Windows 10.0.19044.1889 (21H2)
Intel Core i7-7820HQ CPU 2.90GHz (Kaby Lake), 1 CPU, 8 logical and 4 physical cores
.NET SDK=6.0.303
  [Host]     : .NET 6.0.8 (6.0.822.36306), X64 RyuJIT
  DefaultJob : .NET 6.0.8 (6.0.822.36306), X64 RyuJIT
Method Categories bufferSize Mean Error StdDev Gen 0 Gen 1 Gen 2 Allocated
'String d13n (System.Text.Json)' system.text.json ? 916.1 ns 12.42 ns 11.01 ns 0.2594 - - 1 KB
'Stream d13n (Newtonsoft)' newtonsoft 512 1,480.6 ns 23.73 ns 21.04 ns 1.1826 - - 5 KB
'Stream d13n (Newtonsoft)' newtonsoft 128 1,529.1 ns 29.89 ns 33.22 ns 0.9079 - - 4 KB
'Stream d13n (Newtonsoft)' newtonsoft 1024 1,599.4 ns 26.54 ns 22.17 ns 1.5507 - - 6 KB
'String d13n (Newtonsoft)' newtonsoft ? 1,708.1 ns 27.16 ns 27.89 ns 0.9136 - - 4 KB
'Stream d13n (Newtonsoft)' newtonsoft 4096 2,015.6 ns 14.86 ns 13.90 ns 3.7498 - - 15 KB
'Stream d13n (System.Text.Json)' system.text.json 4096 89,918.8 ns 1,302.57 ns 1,279.29 ns 2.8076 1.3428 0.1221 12 KB
'Stream d13n (System.Text.Json)' system.text.json 1024 90,269.8 ns 1,714.61 ns 1,905.79 ns 2.8076 1.3428 0.1221 12 KB
'Stream d13n (System.Text.Json)' system.text.json 128 91,374.1 ns 1,780.70 ns 2,252.01 ns 2.8076 1.3428 0.1221 12 KB
'Stream d13n (System.Text.Json)' system.text.json 512 91,578.6 ns 1,793.74 ns 2,332.36 ns 2.8076 1.3428 0.1221 12 KB

Medium JSON response

JSON example: here.

BenchmarkDotNet=v0.13.1, OS=Windows 10.0.19044.1889 (21H2)
Intel Core i7-7820HQ CPU 2.90GHz (Kaby Lake), 1 CPU, 8 logical and 4 physical cores
.NET SDK=6.0.303
  [Host]     : .NET 6.0.8 (6.0.822.36306), X64 RyuJIT
  DefaultJob : .NET 6.0.8 (6.0.822.36306), X64 RyuJIT
Method Categories bufferSize Mean Error StdDev Median Gen 0 Gen 1 Gen 2 Allocated
'String d13n (System.Text.Json)' system.text.json ? 4.058 μs 0.0182 μs 0.0161 μs 4.061 μs 1.1520 - - 5 KB
'Stream d13n (Newtonsoft)' newtonsoft 128 14.146 μs 0.1919 μs 0.1603 μs 14.150 μs 2.3041 - - 9 KB
'Stream d13n (Newtonsoft)' newtonsoft 4096 14.303 μs 0.1308 μs 0.1092 μs 14.306 μs 5.1422 - - 21 KB
'Stream d13n (Newtonsoft)' newtonsoft 512 14.539 μs 0.2870 μs 0.4950 μs 14.428 μs 2.5787 - - 11 KB
'Stream d13n (Newtonsoft)' newtonsoft 1024 14.546 μs 0.2844 μs 0.5614 μs 14.327 μs 2.9449 - - 12 KB
'String d13n (Newtonsoft)' newtonsoft ? 14.594 μs 0.1390 μs 0.1161 μs 14.576 μs 3.1586 - - 13 KB
'Stream d13n (System.Text.Json)' system.text.json 4096 419.653 μs 8.3512 μs 8.9357 μs 416.160 μs 18.0664 8.7891 1.4648 75 KB
'Stream d13n (System.Text.Json)' system.text.json 128 425.301 μs 8.2541 μs 10.1368 μs 424.064 μs 18.0664 8.7891 1.9531 75 KB
'Stream d13n (System.Text.Json)' system.text.json 1024 428.619 μs 8.4618 μs 7.9151 μs 426.447 μs 18.0664 8.7891 1.9531 75 KB
'Stream d13n (System.Text.Json)' system.text.json 512 442.283 μs 8.8355 μs 13.4928 μs 440.107 μs 18.0664 8.7891 1.9531 75 KB

Large JSON response

JSON example: here.

BenchmarkDotNet=v0.13.1, OS=Windows 10.0.19044.1889 (21H2)
Intel Core i7-7820HQ CPU 2.90GHz (Kaby Lake), 1 CPU, 8 logical and 4 physical cores
.NET SDK=6.0.303
  [Host]     : .NET 6.0.8 (6.0.822.36306), X64 RyuJIT
  DefaultJob : .NET 6.0.8 (6.0.822.36306), X64 RyuJIT
Method Categories bufferSize Mean Error StdDev Gen 0 Gen 1 Gen 2 Allocated
'String d13n (System.Text.Json)' system.text.json ? 591.2 μs 4.84 μs 4.29 μs 131.8359 124.0234 124.0234 494 KB
'Stream d13n (System.Text.Json)' system.text.json 4096 951.6 μs 11.63 μs 9.71 μs 25.3906 12.6953 1.9531 106 KB
'Stream d13n (System.Text.Json)' system.text.json 1024 1,042.0 μs 10.15 μs 9.00 μs 25.3906 11.7188 - 106 KB
'Stream d13n (System.Text.Json)' system.text.json 128 1,054.5 μs 5.07 μs 4.49 μs 25.3906 11.7188 - 106 KB
'Stream d13n (System.Text.Json)' system.text.json 512 1,056.9 μs 10.76 μs 8.98 μs 25.3906 11.7188 - 106 KB
'Stream d13n (Newtonsoft)' newtonsoft 4096 1,510.5 μs 26.66 μs 26.19 μs 111.3281 29.2969 - 467 KB
'Stream d13n (Newtonsoft)' newtonsoft 1024 1,512.2 μs 29.77 μs 27.85 μs 103.5156 31.2500 - 458 KB
'Stream d13n (Newtonsoft)' newtonsoft 512 1,535.2 μs 30.13 μs 34.70 μs 99.6094 33.2031 - 456 KB
'Stream d13n (Newtonsoft)' newtonsoft 128 1,568.1 μs 30.22 μs 28.27 μs 99.6094 33.2031 - 455 KB
'String d13n (Newtonsoft)' newtonsoft ? 1,847.7 μs 16.82 μs 13.14 μs 142.5781 142.5781 142.5781 917 KB

(d13n stands for "deserialization")