felipebergmann/benchmark-string

Benchmark Working With Strings

Tests using BenchmarkNET library and .net 6 for string concat and comparison

Description

A simple proof of concept using BenchmarkNET library to test how fast and memory usage running operations to concat and compare strings

How to test

You should open the terminal at your directory and run the commands: You must always runs benchmark as release. Dotnet will optimize the code for release.

> dotnet build -c Release
> dotnet <YourReleaseDLLPath> //e.g. dotnet c:\\repository\project\bin\release\net6.0\BenchmarkWorkingWithStrings.dll

Results

BenchmarkDotNet=v0.13.1, OS=Windows 10.0.19044.1645 (21H2)
AMD Ryzen 7 3700U with Radeon Vega Mobile Gfx, 1 CPU, 8 logical and 4 physical cores
.NET SDK=6.0.200
  [Host]     : .NET 6.0.2 (6.0.222.6406), X64 RyuJIT
  DefaultJob : .NET 6.0.2 (6.0.222.6406), X64 RyuJIT

Method	Mean	Error	StdDev	Rank	Gen 0	Allocated
CompareUsingEqualsMethodOrdinalIgnoreCase	5.634 ns	0.1366 ns	0.1278 ns	1	-	-
StringCompareMethodOrdinalIgnoreCase	14.034 ns	0.1628 ns	0.1522 ns	2	-	-
CompareUsingEqualitySignalAndUpperOnce	21.856 ns	0.4724 ns	1.2770 ns	3	-	-
CompareUsingEqualitySignalAndLowerOnce	42.631 ns	1.5090 ns	4.3779 ns	4	0.0191	40 B
CompareUsingEqualitySignalAndUpperBoth	61.735 ns	1.7003 ns	4.7398 ns	5	0.0191	40 B
CompareUsingEqualitySignalAndLowerBoth	72.486 ns	2.7525 ns	7.8975 ns	6	0.0191	40 B
StringCompareMethodInvariantCultureIgnoreCase	121.655 ns	2.4521 ns	2.2937 ns	7	-	-
CompareUsingEqualsMethodInvariantCultureIgnoreCase	130.981 ns	2.6288 ns	2.4590 ns	8	-	-
CompareUsingEqualsMethodCurrentCultureIgnoreCase	137.357 ns	2.7963 ns	4.6721 ns	9	-	-
StringCompareMethodCurrentCultureIgnoreCase	137.411 ns	2.6964 ns	2.3903 ns	9	-	-

Method	Mean	Error	StdDev	Median	Rank	Gen 0	Allocated
ConcatUsingPlusSignalConcat	60.54 ns	1.763 ns	5.002 ns	60.44 ns	1	0.0726	152 B
ConcatUsingStringInterpolation	64.95 ns	1.436 ns	3.680 ns	66.88 ns	2	0.0421	88 B
ConcatUsingFormat	98.77 ns	2.044 ns	3.471 ns	100.17 ns	3	0.0381	80 B
ConcatUsingStringBuilder	106.08 ns	2.657 ns	7.834 ns	109.36 ns	4	0.1376	288 B