Linq

Introduction

High performance Linq for Unity

Improved performance when using Linq with Mobile (il2cpp).

To use it instead of using System.Linq change it to VirtueSky.Linq

It will be a little different from System.Linq that Select is replaced with Map, and Where is changed to Filter

Benchmark

Environment:

• Unity 6000.0.44f1, Build Android IL2CPP
• Device Redmi Note 10S (Ram 8GB, CPU MediaTek Helio G95 - 2.05GHz, Android 13)

Setup Test Time:

• Array size N = 100000 (int)
• Seed = 42
• Warmup inters = 3
• Measure inters = 8
• Inner loops = 1

Method	System.Linq Best/Avg (ms)	VirtueSky.Linq Best/Avg (ms)
Aggregate	9.106 / 9.313	0.650 / 0.657
Any	0.012 / 0.012	0.004 / 0.004
All	9.262 / 9.825	0.650 / 0.665
Average	9.328 / 9.843	0.519 / 0.539
Contains	11.158 / 12.816	1.169 / 1.186
Count	9.229 / 9.860	0.779 / 0.792
First	0.011 / 0.012	0.003 / 0.003
Last	9.968 / 10.025	0.004 / 0.004
Max	9.169 / 9.842	0.260 / 0.263
Min	9.161 / 9.842	0.260 / 0.264
OrderBy -> ToArray	48.195 / 49.710	27.805 / 28.505
Reverse -> ToArray	6.021 / 6.343	0.411 / 0.430
Select -> Sum	6.810 / 6.957	1.751 / 1.772
Skip -> Sum	14.256 / 17.235	1.019 / 1.055
Sum	6.088 / 6.859	0.908 / 0.931
Take -> Sum	0.056 / 0.057	0.009 / 0.010
Where -> Count	3.491 / 3.964	1.934 / 1.972
Where + Aggregate	5.211 / 5.901	1.254 / 1.794
Where + Select -> Sum	5.436 / 6.154	1.693 / 1.926
Where -> Sum	4.458 / 6.312	1.815 / 2.011

Build development check profiler (Test GC)

• Process benchmark System.Linq

Screen.Recording.2025-08-17.at.13.47.15.mov

• Process benchmark VirtueSky.Linq

Screen.Recording.2025-08-17.at.13.47.40.mov

==> It seems that System.Linq generates more GC than VirtueSky.Linq

Project Benchmark Here