As part of a YouTube video , I went through a bunch of serializers to see their current levels of performance. I'm happy for this repository to be improved in terms of fixing any minor issues, adding new scenarios or adding serialization frameworks.
Current JSON Serializer Results (2023-02-26) BenchmarkDotNet=v0.13.5, OS=Windows 11 (10.0.22621.1265/22H2/2022Update/SunValley2)
Intel Core i9-9900K CPU 3.60GHz (Coffee Lake), 1 CPU, 8 logical and 4 physical cores
.NET SDK=7.0.200
[Host] : .NET 7.0.3 (7.0.323.6910), X64 RyuJIT AVX2
DefaultJob : .NET 7.0.3 (7.0.323.6910), X64 RyuJIT AVX2
Method
data
Mean
Error
StdDev
Median
Min
Max
Ratio
RatioSD
Gen0
Gen1
Gen2
Allocated
Alloc Ratio
SpanJson_Deserialize
Large
91,190.8 us
1,811.48 us
4,374.94 us
89,969.2 us
83,768.1 us
104,369.6 us
0.66
0.05
4000.0000
3833.3333
666.6667
44667.44 KB
1.00
Jil_Deserialize
Large
100,230.1 us
1,943.11 us
2,237.69 us
100,638.2 us
96,002.4 us
103,568.0 us
0.72
0.02
4000.0000
3833.3333
666.6667
27753.73 KB
0.62
UTF8Json_Deserialize
Large
109,200.0 us
2,085.04 us
2,047.79 us
109,092.9 us
105,728.9 us
113,311.5 us
0.79
0.02
3800.0000
3600.0000
600.0000
44666.62 KB
1.00
SystemTextJson_Deserialize
Large
138,832.0 us
1,958.74 us
1,832.20 us
138,740.8 us
136,207.2 us
141,876.0 us
1.00
0.00
3750.0000
3500.0000
500.0000
44668.96 KB
1.00
SystemTextJson_SrcGen_Deserialize
Large
140,451.0 us
2,175.38 us
2,034.85 us
140,515.7 us
137,389.1 us
144,502.9 us
1.01
0.02
3750.0000
3500.0000
500.0000
44668.96 KB
1.00
ServiceStack_Deserialize
Large
220,351.1 us
4,329.13 us
7,112.88 us
218,680.2 us
210,853.8 us
238,109.4 us
1.58
0.06
4666.6667
2333.3333
333.3333
37471.89 KB
0.84
NewtonsoftJson_Deserialize
Large
249,970.0 us
4,223.49 us
4,519.08 us
248,670.5 us
244,194.6 us
260,768.2 us
1.80
0.04
5000.0000
2500.0000
500.0000
39137.85 KB
0.88
Jil_Deserialize
Medium
16,157.2 us
266.15 us
316.83 us
16,072.6 us
15,767.3 us
16,985.5 us
0.59
0.02
843.7500
750.0000
-
6935.28 KB
0.62
SpanJson_Deserialize
Medium
16,572.0 us
267.62 us
237.24 us
16,686.7 us
16,136.5 us
16,803.6 us
0.61
0.01
1093.7500
968.7500
250.0000
11124.97 KB
1.00
UTF8Json_Deserialize
Medium
21,231.9 us
414.06 us
552.76 us
21,134.0 us
20,066.9 us
22,387.3 us
0.78
0.03
1093.7500
968.7500
250.0000
11125.04 KB
1.00
SystemTextJson_Deserialize
Medium
27,273.0 us
329.03 us
307.77 us
27,179.3 us
26,864.5 us
28,011.8 us
1.00
0.00
1093.7500
968.7500
250.0000
11125.72 KB
1.00
SystemTextJson_SrcGen_Deserialize
Medium
27,648.3 us
241.70 us
214.26 us
27,591.1 us
27,366.2 us
28,085.3 us
1.01
0.02
1093.7500
968.7500
250.0000
11126.42 KB
1.00
ServiceStack_Deserialize
Medium
48,323.4 us
734.66 us
687.20 us
48,138.1 us
47,236.9 us
49,689.3 us
1.77
0.03
1181.8182
1000.0000
90.9091
9357.83 KB
0.84
NewtonsoftJson_Deserialize
Medium
55,349.4 us
1,089.57 us
2,298.27 us
55,172.9 us
51,556.2 us
60,647.0 us
2.05
0.07
1100.0000
900.0000
-
9776.74 KB
0.88
SpanJson_Deserialize
Small
511.2 us
9.20 us
8.15 us
509.2 us
501.2 us
528.3 us
0.54
0.01
51.7578
51.7578
51.7578
446.93 KB
1.60
Jil_Deserialize
Small
564.0 us
2.39 us
2.00 us
563.5 us
561.7 us
567.8 us
0.60
0.00
34.1797
10.7422
-
279.63 KB
1.00
UTF8Json_Deserialize
Small
665.7 us
5.09 us
4.76 us
665.6 us
658.7 us
673.7 us
0.71
0.00
83.0078
61.5234
48.8281
447.05 KB
1.60
SystemTextJson_Deserialize
Small
939.9 us
1.45 us
1.21 us
939.7 us
937.5 us
941.7 us
1.00
0.00
34.1797
11.7188
-
279.71 KB
1.00
SystemTextJson_SrcGen_Deserialize
Small
983.0 us
2.19 us
1.94 us
983.0 us
979.7 us
985.9 us
1.05
0.00
33.2031
11.7188
-
279.71 KB
1.00
ServiceStack_Deserialize
Small
1,551.9 us
13.64 us
12.76 us
1,546.8 us
1,535.9 us
1,578.3 us
1.65
0.01
44.9219
13.6719
-
379.04 KB
1.36
NewtonsoftJson_Deserialize
Small
1,880.9 us
28.69 us
26.84 us
1,886.8 us
1,831.2 us
1,914.5 us
2.00
0.03
46.8750
19.5313
-
398.46 KB
1.42
SpanJson_Serialize
Large
24,379.2 us
67.39 us
56.27 us
24,383.5 us
24,263.1 us
24,476.9 us
0.48
0.00
125.0000
125.0000
125.0000
16384.13 KB
0.48
UTF8Json_Serialize
Large
39,032.1 us
765.63 us
1,419.15 us
38,884.8 us
36,683.0 us
42,188.1 us
0.80
0.03
615.3846
615.3846
615.3846
82319.57 KB
2.40
SystemTextJson_SrcGen_Serialize
Large
49,655.5 us
217.47 us
181.60 us
49,619.5 us
49,443.4 us
50,147.9 us
0.98
0.00
-
-
-
34296.93 KB
1.00
SystemTextJson_Serialize
Large
50,513.3 us
170.93 us
151.53 us
50,520.8 us
50,184.7 us
50,817.3 us
1.00
0.00
-
-
-
34296.93 KB
1.00
Jil_Serialize
Large
53,530.0 us
1,067.88 us
1,425.59 us
53,763.7 us
50,595.6 us
55,955.4 us
1.07
0.03
5000.0000
4888.8889
888.8889
67819 KB
1.98
NewtonsoftJson_Serialize
Large
125,169.9 us
2,045.01 us
1,812.85 us
125,387.6 us
122,390.9 us
128,757.7 us
2.48
0.04
6600.0000
3600.0000
800.0000
81290.58 KB
2.37
ServiceStack_Serialize
Large
146,043.9 us
293.87 us
274.89 us
145,935.9 us
145,687.9 us
146,551.0 us
2.89
0.01
6000.0000
-
-
78487.63 KB
2.29
SpanJson_Serialize
Medium
6,141.6 us
56.25 us
52.61 us
6,155.3 us
5,993.7 us
6,201.1 us
0.48
0.01
117.1875
117.1875
117.1875
4096.11 KB
0.48
UTF8Json_Serialize
Medium
10,055.7 us
199.79 us
177.11 us
10,020.6 us
9,819.5 us
10,372.9 us
0.78
0.02
500.0000
500.0000
500.0000
20445.27 KB
2.41
SystemTextJson_Serialize
Medium
12,890.4 us
203.52 us
190.38 us
12,866.9 us
12,676.6 us
13,272.9 us
1.00
0.00
187.5000
187.5000
187.5000
8496.96 KB
1.00
SystemTextJson_SrcGen_Serialize
Medium
13,029.8 us
164.63 us
153.99 us
13,040.7 us
12,804.6 us
13,314.2 us
1.01
0.02
187.5000
187.5000
187.5000
8496.96 KB
1.00
Jil_Serialize
Medium
16,192.0 us
315.34 us
410.04 us
16,162.8 us
15,534.3 us
17,039.5 us
1.26
0.05
1906.2500
1812.5000
875.0000
16806.86 KB
1.98
NewtonsoftJson_Serialize
Medium
31,214.2 us
558.44 us
948.28 us
30,899.0 us
30,212.6 us
33,347.0 us
2.41
0.07
2312.5000
1875.0000
875.0000
20170.37 KB
2.37
ServiceStack_Serialize
Medium
38,538.6 us
314.84 us
294.50 us
38,582.1 us
38,049.6 us
39,009.7 us
2.99
0.04
1571.4286
142.8571
142.8571
19358.84 KB
2.28
SpanJson_Serialize
Small
234.9 us
0.43 us
0.38 us
234.9 us
234.1 us
235.3 us
0.47
0.00
75.6836
75.6836
75.6836
256.07 KB
0.75
UTF8Json_Serialize
Small
303.2 us
0.89 us
0.84 us
303.3 us
301.8 us
304.4 us
0.61
0.00
148.9258
148.9258
148.9258
551.72 KB
1.62
Jil_Serialize
Small
436.1 us
19.80 us
58.37 us
473.4 us
322.6 us
486.5 us
0.70
0.03
99.6094
99.6094
99.6094
673.91 KB
1.98
SystemTextJson_Serialize
Small
499.2 us
3.20 us
2.84 us
499.9 us
492.4 us
502.9 us
1.00
0.00
89.8438
89.8438
89.8438
340.86 KB
1.00
SystemTextJson_SrcGen_Serialize
Small
503.1 us
2.69 us
2.38 us
503.0 us
498.8 us
507.4 us
1.01
0.01
89.8438
89.8438
89.8438
340.85 KB
1.00
NewtonsoftJson_Serialize
Small
1,102.0 us
11.72 us
9.15 us
1,104.2 us
1,081.5 us
1,110.3 us
2.21
0.03
148.4375
113.2813
89.8438
821.44 KB
2.41
ServiceStack_Serialize
Small
1,581.4 us
17.93 us
16.77 us
1,577.9 us
1,562.8 us
1,617.2 us
3.17
0.04
142.5781
82.0313
82.0313
784.99 KB
2.30
Current Binary Serializer Results (2023-02-26) BenchmarkDotNet=v0.13.5, OS=Windows 11 (10.0.22621.1265/22H2/2022Update/SunValley2)
Intel Core i9-9900K CPU 3.60GHz (Coffee Lake), 1 CPU, 8 logical and 4 physical cores
.NET SDK=7.0.200
[Host] : .NET 7.0.3 (7.0.323.6910), X64 RyuJIT AVX2
DefaultJob : .NET 7.0.3 (7.0.323.6910), X64 RyuJIT AVX2
Method
data
Mean
Error
StdDev
Min
Max
Gen0
Gen1
Gen2
Allocated
GroBuf_Deserialize
Large
47,243.86 us
825.702 us
772.362 us
45,642.06 us
48,513.91 us
3636.3636
3545.4545
545.4545
26179193 B
Bebop_Deserialize
Large
48,244.74 us
748.848 us
700.473 us
47,523.21 us
49,245.47 us
3909.0909
3818.1818
727.2727
26980756 B
MemoryPack_Deserialize
Large
48,738.47 us
911.477 us
852.597 us
47,061.95 us
50,501.60 us
3636.3636
3545.4545
545.4545
26179103 B
MessagePack_Deserialize
Large
62,726.35 us
1,155.674 us
1,330.876 us
60,548.57 us
65,081.39 us
3500.0000
3375.0000
500.0000
26179115 B
ProtoBufNet_Deserialize
Large
71,688.15 us
1,416.613 us
2,031.664 us
69,305.33 us
76,257.39 us
3714.2857
3571.4286
571.4286
26820875 B
Hyperion_Deserialize
Large
87,696.21 us
1,700.080 us
1,889.634 us
85,881.60 us
91,572.22 us
4166.6667
4000.0000
500.0000
31180175 B
MsgPack_Deserialize
Large
92,672.91 us
1,770.147 us
1,817.811 us
89,019.35 us
96,053.55 us
4166.6667
4000.0000
500.0000
32018907 B
AvroConvert_Deserialize
Large
196,401.45 us
3,830.642 us
4,980.917 us
187,416.40 us
203,311.00 us
10000.0000
3666.6667
333.3333
96425000 B
BSON_Deserialize
Large
235,586.13 us
3,199.265 us
2,836.065 us
229,802.00 us
240,312.37 us
8333.3333
4333.3333
333.3333
69298835 B
GroBuf_Deserialize
Medium
4,257.91 us
62.966 us
52.579 us
4,179.05 us
4,336.40 us
773.4375
703.1250
-
6533041 B
Bebop_Deserialize
Medium
4,402.57 us
60.201 us
56.312 us
4,308.14 us
4,478.53 us
804.6875
750.0000
-
6732454 B
MemoryPack_Deserialize
Medium
4,425.59 us
43.134 us
40.347 us
4,370.96 us
4,497.73 us
773.4375
703.1250
-
6532969 B
ProtoBufNet_Deserialize
Medium
8,896.05 us
44.146 us
39.134 us
8,804.73 us
8,960.84 us
796.8750
593.7500
-
6693108 B
MessagePack_Deserialize
Medium
8,967.02 us
74.913 us
66.408 us
8,843.58 us
9,075.46 us
765.6250
687.5000
-
6532978 B
Hyperion_Deserialize
Medium
13,124.22 us
46.479 us
41.203 us
13,063.96 us
13,210.24 us
921.8750
843.7500
-
7789506 B
MsgPack_Deserialize
Medium
13,680.20 us
189.208 us
202.450 us
13,328.87 us
14,038.78 us
953.1250
906.2500
-
7992954 B
AvroConvert_Deserialize
Medium
43,866.48 us
713.613 us
667.514 us
42,987.47 us
45,111.19 us
2692.3077
1076.9231
230.7692
24169490 B
BSON_Deserialize
Medium
59,161.54 us
1,155.333 us
1,080.699 us
57,379.79 us
60,921.69 us
2222.2222
1222.2222
222.2222
17298596 B
GroBuf_Deserialize
Small
113.90 us
1.860 us
1.649 us
111.64 us
117.01 us
31.4941
10.4980
-
263784 B
Bebop_Deserialize
Small
116.13 us
1.069 us
1.000 us
114.89 us
118.71 us
32.4707
12.0850
-
272000 B
MemoryPack_Deserialize
Small
121.76 us
0.376 us
0.314 us
120.74 us
121.99 us
31.4941
10.4980
-
263712 B
MessagePack_Deserialize
Small
299.24 us
0.495 us
0.439 us
298.79 us
300.21 us
31.2500
10.2539
-
263713 B
ProtoBufNet_Deserialize
Small
302.80 us
4.197 us
6.152 us
298.31 us
321.27 us
32.2266
10.7422
-
270233 B
Hyperion_Deserialize
Small
354.44 us
1.090 us
1.019 us
353.28 us
356.81 us
37.5977
12.6953
-
315425 B
MsgPack_Deserialize
Small
463.82 us
4.525 us
4.232 us
458.79 us
472.56 us
38.0859
12.6953
-
322225 B
AvroConvert_Deserialize
Small
1,516.93 us
8.215 us
7.684 us
1,504.66 us
1,527.68 us
134.7656
48.8281
-
1135455 B
BSON_Deserialize
Small
1,697.43 us
19.415 us
18.161 us
1,666.60 us
1,727.83 us
82.0313
27.3438
-
701884 B
MemoryPack_Serialize
Large
9,668.02 us
11.755 us
9.816 us
9,649.58 us
9,682.30 us
31.2500
31.2500
31.2500
9818513 B
GroBuf_Serialize
Large
10,991.49 us
13.141 us
11.649 us
10,968.58 us
11,013.30 us
62.5000
62.5000
62.5000
18824229 B
Bebop_Serialize
Large
12,556.43 us
55.511 us
46.354 us
12,493.10 us
12,641.42 us
-
-
-
36 B
MessagePack_Serialize
Large
16,490.02 us
66.105 us
61.834 us
16,413.60 us
16,612.91 us
-
-
-
7196899 B
ProtoBufNet_Serialize
Large
27,214.02 us
270.428 us
239.727 us
26,966.38 us
27,802.83 us
156.2500
156.2500
156.2500
27893153 B
Hyperion_Serialize
Large
34,844.59 us
425.809 us
398.302 us
34,004.25 us
35,126.87 us
600.0000
66.6667
66.6667
28827900 B
MsgPack_Serialize
Large
40,435.03 us
372.214 us
329.958 us
39,724.02 us
40,921.32 us
1230.7692
384.6154
307.6923
67710617 B
AvroConvert_Serialize
Large
55,918.00 us
640.324 us
598.960 us
54,529.86 us
56,514.13 us
4111.1111
111.1111
111.1111
78042956 B
BSON_Serialize
Large
139,522.40 us
1,145.433 us
1,071.439 us
137,698.95 us
141,130.38 us
4750.0000
-
-
90285250 B
MemoryPack_Serialize
Medium
2,344.52 us
27.653 us
24.514 us
2,318.72 us
2,405.98 us
85.9375
85.9375
85.9375
2446033 B
GroBuf_Serialize
Medium
2,594.14 us
51.653 us
59.484 us
2,480.14 us
2,687.87 us
109.3750
109.3750
109.3750
4688436 B
Bebop_Serialize
Medium
2,874.85 us
8.709 us
6.800 us
2,869.72 us
2,887.92 us
-
-
-
27 B
MessagePack_Serialize
Medium
4,229.39 us
82.978 us
77.618 us
4,104.00 us
4,339.72 us
31.2500
31.2500
31.2500
1737144 B
ProtoBufNet_Serialize
Medium
7,162.14 us
45.605 us
40.428 us
7,107.72 us
7,238.80 us
140.6250
125.0000
125.0000
7090069 B
Hyperion_Serialize
Medium
8,857.20 us
29.018 us
25.724 us
8,821.47 us
8,914.76 us
296.8750
156.2500
156.2500
7197143 B
MsgPack_Serialize
Medium
9,629.06 us
188.542 us
376.539 us
8,914.96 us
10,518.29 us
671.8750
406.2500
390.6250
15023469 B
AvroConvert_Serialize
Medium
16,328.77 us
310.634 us
305.085 us
15,725.40 us
16,876.81 us
1375.0000
562.5000
343.7500
19539986 B
BSON_Serialize
Medium
37,320.81 us
603.465 us
564.481 us
36,480.74 us
38,157.81 us
1428.5714
285.7143
285.7143
22510582 B
MemoryPack_Serialize
Small
86.05 us
0.790 us
0.701 us
85.32 us
87.32 us
16.1133
16.1133
16.1133
98798 B
GroBuf_Serialize
Small
90.58 us
1.163 us
1.088 us
89.51 us
92.61 us
27.2217
27.2217
27.2217
189554 B
Bebop_Serialize
Small
114.32 us
0.799 us
0.748 us
113.45 us
116.12 us
-
-
-
24 B
MessagePack_Serialize
Small
159.42 us
1.411 us
1.178 us
157.78 us
161.28 us
8.0566
-
-
69336 B
ProtoBufNet_Serialize
Small
259.28 us
3.939 us
3.492 us
252.99 us
266.47 us
26.8555
4.3945
-
228617 B
MsgPack_Serialize
Small
281.98 us
2.989 us
2.496 us
278.27 us
285.97 us
70.8008
12.2070
-
596033 B
Hyperion_Serialize
Small
339.40 us
2.626 us
2.193 us
335.48 us
342.36 us
52.2461
25.8789
22.4609
384295 B
AvroConvert_Serialize
Small
773.36 us
8.749 us
8.184 us
763.25 us
792.67 us
129.8828
61.5234
44.9219
983877 B
BSON_Serialize
Small
1,449.58 us
28.409 us
29.174 us
1,417.69 us
1,504.62 us
158.2031
101.5625
95.7031
1093695 B