XenoAtom.Allocators [](https://github.com/XenoAtom/XenoAtom.Allocators/actions/workflows/ci.yml) [](https://www.nuget.org/packages/XenoAtom.Allocators/)

XenoAtom.Allocators is a fast, lightweight and low-level memory allocator for .NET.

✨ Features

• Implementation of a TLSF (Two-Level Segregated Fit) allocator with the following features
  • Implementation of the paper TLSF: a NewDynamic Memory Allocator for Real-Time Systems
  • Provides an agnostic backend chunk allocator architecture (native memory, managed memory, custom e.g GPU memory...)
  • 4GB of addressable maximum allocation size.
  • Minimum allocation size/alignment of 64 bytes (32 bytes overhead per allocation)
  • Configurable power-of-two alignment per allocator instance.
• NativeAOT compatible.
• Support for net8.0+

📖 User Guide

For more details on how to use XenoAtom.Allocators, please visit the user guide.

📊 Benchmarks

The benchmark is available in the XenoAtom.Allocators.Bench.

It is comparing the performance of the TLSF allocator against the standard malloc/free from the C runtime library.

The benchmark consists of making 2048 allocations and frees within a range of random sizes between 64, 96, 150, 200, 400, 1024, 4096 bytes.

BenchmarkDotNet v0.13.12, Windows 11 (10.0.22631.3810/23H2/2023Update/SunValley3)
AMD Ryzen 9 7950X, 1 CPU, 32 logical and 16 physical cores
.NET SDK 8.0.300
  [Host]     : .NET 8.0.6 (8.0.624.26715), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI
  DefaultJob : .NET 8.0.6 (8.0.624.26715), X64 RyuJIT AVX-512F+CD+BW+DQ+VL+VBMI

Method	Mean	Error	StdDev	Ratio	RatioSD
Tlsf	82.27 us	1.285 us	1.202 us	0.78	0.02
Libc	105.34 us	1.898 us	2.110 us	1.00	0.00

The benchmark shows that the TLSF allocator is 20%+ faster than the standard malloc/free from the C runtime library (MSVC C Runtime on Windows).

🪪 License

This software is released under the BSD-2-Clause license.

🤗 Author

Alexandre Mutel aka XenoAtom.