Map vs Dictionary (Add)

github repo

The source code for all benchmarks are in Tools/Towel.Benchmarking.


BenchmarkDotNet=v0.13.0, OS=Windows 10.0.19042.1110 (20H2/October2020Update)
Intel Core i7-4790K CPU 4.00GHz (Haswell), 1 CPU, 8 logical and 4 physical cores
.NET SDK=6.0.100-preview.6.21355.2
  [Host]     : .NET 5.0.8 (5.0.821.31504), X64 RyuJIT
  DefaultJob : .NET 5.0.8 (5.0.821.31504), X64 RyuJIT
Method N Mean Error StdDev
MapDelegates 10 520.4 ns 7.94 ns 8.16 ns
MapStructs 10 455.2 ns 9.10 ns 12.76 ns
Dictionary 10 197.4 ns 3.29 ns 2.92 ns
MapDelegates 100 4,133.3 ns 37.15 ns 31.02 ns
MapStructs 100 3,716.8 ns 72.63 ns 117.28 ns
Dictionary 100 1,700.2 ns 33.61 ns 57.07 ns
MapDelegates 1000 32,807.2 ns 372.95 ns 330.61 ns
MapStructs 1000 27,958.3 ns 490.14 ns 458.48 ns
Dictionary 1000 15,436.3 ns 204.14 ns 190.95 ns
MapDelegates 10000 499,552.4 ns 4,540.48 ns 3,791.51 ns
MapStructs 10000 478,678.6 ns 8,563.30 ns 7,150.74 ns
Dictionary 10000 256,607.8 ns 5,117.49 ns 13,025.64 ns