Synchronization methods - rianjs/DotNetPerfTesting GitHub Wiki

Tests:

• https://github.com/rianjs/DotNetPerfTesting/blob/master/PerfTesting/PerfTesting/Synchronization/SynchronizationTests.cs
• DictionaryValueExists is what a lookup costs without synchronization protection. Overhead costs costs should subtract this baseline value.

.NET Core 2.2 on Intel 64

BenchmarkDotNet=v0.10.14, OS=macOS 10.15.3 (19D76) [Darwin 19.3.0]
Intel Core i7-8850H CPU 2.60GHz (Coffee Lake), 1 CPU, 12 logical and 6 physical cores
.NET Core SDK=2.2.100
  [Host] : .NET Core 2.2.0 (CoreCLR 4.6.27110.04, CoreFX 4.6.27110.04), 64bit RyuJIT

Method	Mean	Error	StdDev	Median
SemaphoreSlimValueExists	101.01 ns	2.9364 ns	8.6581 ns	98.99 ns
LockDictionaryValueExists	36.27 ns	0.5430 ns	0.4240 ns	36.26 ns
DictionaryValueExists	24.57 ns	0.7112 ns	2.0746 ns	23.98 ns

.NET 8 on M3 Mac

BenchmarkDotNet v0.13.12, macOS Sonoma 14.4 (23E214) [Darwin 23.4.0]
Apple M3, 1 CPU, 8 logical and 8 physical cores
.NET SDK 8.0.100
  [Host]   : .NET 8.0.0 (8.0.23.53103), Arm64 RyuJIT AdvSIMD
  ShortRun : .NET 8.0.0 (8.0.23.53103), Arm64 RyuJIT AdvSIMD

Job=ShortRun  IterationCount=3  LaunchCount=1  
WarmupCount=3  

Method	Mean	Error	StdDev	Allocated
SemaphoreSlimValueExists	19.059 ns	1.7578 ns	0.0964 ns	-
LockDictionaryValueExists	8.662 ns	0.0340 ns	0.0019 ns	-
DictionaryValueExists	4.965 ns	0.1640 ns	0.0090 ns	-