ZstdSharp
ZstdSharp is a port of zstd compression library to ะก#
Based on Zstandard v1.5.5
Supports .NET Core 3.1, .NET 5+, .NET Standard 2.0+, .NET Framework 4.6.1+
Usage
ZstdSharp has an unsafe API much the same as zstd.
There are also safe wrappers.
Compress data:
var src = File.ReadAllBytes("dickens");
using var compressor = new Compressor(level);
var compressed = compressor.Wrap(src);Decompress data:
var src = File.ReadAllBytes("dickens.zst");
using var decompressor = new Decompressor();
var decompressed = decompressor.Unwrap(src);Streaming compression:
using var input = File.OpenRead("dickens");
using var output = File.OpenWrite("dickens.zst");
using var compressionStream = new CompressionStream(output, level);
input.CopyTo(compressionStream);Streaming decompression:
using var input = File.OpenRead("dickens.zst");
using var output = File.OpenWrite("dickens");
using var decompressionStream = new DecompressionStream(input);
decompressionStream.CopyTo(output);Benchmark
Best performance is achieved on .NET. System.Runtime.Intrinsics namespace is required for hardware accelerated bit and vector operations. .NET Standard and .NET Framework will use software implementation
Comparision zstd (native) and ZstdSharp
BenchmarkDotNet=v0.13.2, OS=Windows 10 (10.0.19044.2604/21H2/November2021Update)
12th Gen Intel Core i7-12700, 1 CPU, 20 logical and 12 physical cores
.NET SDK=7.0.101
[Host] : .NET 7.0.1 (7.0.122.56804), X64 RyuJIT AVX2
DefaultJob : .NET 7.0.1 (7.0.122.56804), X64 RyuJIT AVX2
Compression level 1
| Method | Mean | Error | StdDev | Ratio |
|---|---|---|---|---|
| CompressNative | 24.709 ms | 0.0282 ms | 0.0250 ms | 1.00 |
| CompressSharp | 33.090 ms | 0.0500 ms | 0.0443 ms | 1.34 |
| DecompressNative | 5.568 ms | 0.0166 ms | 0.0155 ms | 1.00 |
| DecompressSharp | 6.974 ms | 0.0086 ms | 0.0076 ms | 1.25 |
Compression level 5
| Method | Mean | Error | StdDev | Ratio |
|---|---|---|---|---|
| CompressNative | 70.781 ms | 0.1872 ms | 0.1563 ms | 1.00 |
| CompressSharp | 94.276 ms | 0.2301 ms | 0.2040 ms | 1.33 |
| DecompressNative | 6.221 ms | 0.0094 ms | 0.0078 ms | 1.00 |
| DecompressSharp | 8.484 ms | 0.0134 ms | 0.0105 ms | 1.36 |
Compression level 15
| Method | Mean | Error | StdDev | Ratio |
|---|---|---|---|---|
| CompressNative | 2,304.967 ms | 19.6909 ms | 17.4555 ms | 1.00 |
| CompressSharp | 2,336.182 ms | 19.8808 ms | 17.6238 ms | 1.01 |
| DecompressNative | 5.541 ms | 0.0174 ms | 0.0145 ms | 1.00 |
| DecompressSharp | 6.987 ms | 0.0227 ms | 0.0201 ms | 1.26 |