collections.org

Collections

Type	Method	type	Mean	Error	StdDev
**ImmutableArrayCollection**	FindFirst	Small	12,523.6 ns	217.37 ns	213.49 ns
ImmutableListCollection	FindFirst	Small	83,135.6 ns	1,053.12 ns	985.09 ns
LinkedListCollection	FindFirst	Small	45,599.6 ns	774.04 ns	646.35 ns
ListCollection	FindFirst	Small	13,189.1 ns	245.72 ns	229.85 ns
ReadOnlyCollection	FindFirst	Small	14,393.4 ns	228.33 ns	271.81 ns
**ImmutableArrayCollection**	FindLast	Small	720,591.4 ns	14,307.67 ns	13,383.40 ns
ImmutableListCollection	FindLast	Small	8,198,595.4 ns	146,227.39 ns	129,626.77 ns
LinkedListCollection	FindLast	Small	2,775,011.7 ns	49,695.28 ns	46,485.00 ns
ListCollection	FindLast	Small	727,183.6 ns	14,296.22 ns	13,372.69 ns
ReadOnlyCollection	FindLast	Small	1,487,886.7 ns	29,238.04 ns	34,805.81 ns
**ImmutableArrayCollection**	Filter	Small	2,351.7 ns	37.87 ns	33.57 ns
ImmutableListCollection	Filter	Small	75,221.6 ns	1,233.55 ns	1,468.46 ns
LinkedListCollection	Filter	Small	54,610.1 ns	1,073.87 ns	1,505.42 ns
ListCollection	Filter	Small	2,448.3 ns	49.03 ns	63.76 ns
ReadOnlyCollection	Filter	Small	306.4 ns	5.89 ns	7.45 ns
ImmutableArrayCollection	FindFirst	Large	252,812.0 ns	4,711.23 ns	4,406.89 ns
ImmutableListCollection	FindFirst	Large	1,388,034.1 ns	27,351.53 ns	31,498.06 ns
LinkedListCollection	FindFirst	Large	1,109,264.1 ns	21,481.75 ns	22,060.18 ns
ListCollection	FindFirst	Large	260,819.3 ns	5,156.08 ns	5,730.97 ns
**ReadOnlyCollection**	FindFirst	Large	16,801.2 ns	309.93 ns	402.99 ns
ImmutableArrayCollection	FindLast	Large	33,874,376.2 ns	613,335.66 ns	573,714.56 ns
ImmutableListCollection	FindLast	Large	283,879,305.0 ns	5,481,752.45 ns	6,312,794.28 ns
LinkedListCollection	FindLast	Large	98,087,332.7 ns	1,958,853.28 ns	2,809,328.84 ns
**ListCollection**	FindLast	Large	33,360,925.0 ns	651,335.79 ns	954,719.55 ns
ReadOnlyCollection	FindLast	Large	56,678,133.9 ns	1,117,417.17 ns	1,286,819.27 ns
ImmutableArrayCollection	Filter	Large	464,333.5 ns	4,158.76 ns	3,246.89 ns
ImmutableListCollection	Filter	Large	2,426,227.2 ns	46,369.76 ns	45,541.30 ns
LinkedListCollection	Filter	Large	2,156,584.5 ns	40,422.55 ns	37,811.28 ns
ListCollection	Filter	Large	464,362.0 ns	5,981.92 ns	5,595.49 ns
**ReadOnlyCollection**	Filter	Large	295.9 ns	5.87 ns	9.14 ns

Summary

BenchmarkDotNet=v0.13.1, OS=Windows 10.0.19044.1415 (21H2) Intel Xeon Gold 6130 CPU 2.10GHz, 1 CPU, 4 logical and 4 physical cores .NET SDK=6.0.101 [Host] : .NET 6.0.1 (6.0.121.56705), X64 RyuJIT DefaultJob : .NET 6.0.1 (6.0.121.56705), X64 RyuJIT