After refactoring/simplifying code, what's the price of using ConcurrentDictionary<,> once it's not really needed?
BenchmarkDotNet=v0.13.1, OS=Windows 10.0.19044.2075 (21H2)
Intel Core i7-7600U CPU 2.80GHz (Kaby Lake), 1 CPU, 4 logical and 2 physical cores
.NET SDK=6.0.401
[Host] : .NET 6.0.9 (6.0.922.41905), X64 RyuJIT
DefaultJob : .NET 6.0.9 (6.0.922.41905), X64 RyuJIT
| Method | Categories | Mean | Error | StdDev | Ratio | RatioSD |
|---|---|---|---|---|---|---|
| List | List | 383.8 ns | 3.36 ns | 3.14 ns | 1.00 | 0.00 |
| ConcurrentBag | List | 4,146.5 ns | 73.59 ns | 68.83 ns | 10.80 | 0.19 |
| Dictionary | Dictionary | 2,119.5 ns | 28.52 ns | 25.29 ns | 1.00 | 0.00 |
| ConcurrentDictionary | Dictionary | 12,852.7 ns | 83.10 ns | 77.73 ns | 6.07 | 0.08 |