Deflate Benchmark

The following benchmark has been performed on a DELL Latitude 5490 (Ubuntu 20.04 on Windows 10 + WSL2). The source for the benchmark is located here. The outcome is that Microsoft's Deflate implementation is a faster than the one from SharpZipLib and that Intel's vectorized ISA-L library is much faster than both of them.

BenchmarkDotNet=v0.13.1, OS=ubuntu 20.04
Intel Core i7-8650U CPU 1.90GHz (Kaby Lake R), 1 CPU, 8 logical and 4 physical cores
.NET SDK=5.0.207
  [Host]     : .NET 5.0.10 (5.0.1021.41214), X64 RyuJIT
  DefaultJob : .NET 5.0.10 (5.0.1021.41214), X64 RyuJIT

Legends

• N : Length of buffer to be uncompressed
• Mean : Arithmetic mean of all measurements
• Error : Half of 99.9% confidence interval
• StdDev : Standard deviation of all measurements
• Median : Value separating the higher half of all measurements (50th percentile)
• Ratio : Mean of the ratio distribution ([Current]/[Baseline])
• RatioSD : Standard deviation of the ratio distribution ([Current]/[Baseline])

Method	N	Mean	Error	StdDev	Median	Ratio	RatioSD
MicrosoftDeflateStream	1	857.22 ns	6.897 ns	5.760 ns	857.56 ns	1.00	0.00
SharpZipLibInflater	1	2,034.71 ns	32.758 ns	30.642 ns	2,051.62 ns	2.37	0.03
Intel_ISA_L_Inflate	1	621.18 ns	2.690 ns	2.246 ns	621.52 ns	0.72	0.00
MicrosoftDeflateStream	100	921.29 ns	18.285 ns	21.057 ns	914.35 ns	1.00	0.00
SharpZipLibInflater	100	2,281.63 ns	44.293 ns	71.524 ns	2,297.53 ns	2.47	0.11
Intel_ISA_L_Inflate	100	61.49 ns	0.920 ns	0.718 ns	61.50 ns	0.07	0.00
MicrosoftDeflateStream	10000	1,661.94 ns	60.950 ns	173.895 ns	1,556.42 ns	1.00	0.00
SharpZipLibInflater	10000	3,174.51 ns	62.940 ns	147.119 ns	3,128.49 ns	1.95	0.15
Intel_ISA_L_Inflate	10000	365.94 ns	3.243 ns	2.875 ns	365.12 ns	0.21	0.02
MicrosoftDeflateStream	1000000	71,288.41 ns	1,289.701 ns	2,748.457 ns	70,442.46 ns	1.00	0.00
SharpZipLibInflater	1000000	147,217.07 ns	9,770.762 ns	28,034.148 ns	131,972.02 ns	2.08	0.41
Intel_ISA_L_Inflate	1000000	36,944.08 ns	714.362 ns	764.359 ns	36,658.62 ns	0.51	0.03
MicrosoftDeflateStream	10000000	2,069,367.83 ns	29,810.212 ns	27,884.491 ns	2,061,542.38 ns	1.00	0.00
SharpZipLibInflater	10000000	2,458,626.00 ns	26,972.559 ns	23,910.471 ns	2,464,160.16 ns	1.19	0.02
Intel_ISA_L_Inflate	10000000	1,911,812.90 ns	23,110.974 ns	21,618.020 ns	1,906,020.31 ns	0.92	0.01