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| <!DOCTYPE html> | |
| <html lang='en'> | |
| <head> | |
| <meta charset='utf-8' /> | |
| <title>LinqBenchmarks.LinqBenchmark-20240119-231018</title> | |
| <style type="text/css"> | |
| table { border-collapse: collapse; display: block; width: 100%; overflow: auto; } | |
| td, th { padding: 6px 13px; border: 1px solid #ddd; text-align: right; } | |
| tr { background-color: #fff; border-top: 1px solid #ccc; } | |
| tr:nth-child(even) { background: #f8f8f8; } | |
| </style> | |
| </head> | |
| <body> | |
| <pre><code> | |
| BenchmarkDotNet v0.13.12, Windows 10 (10.0.19045.3803/22H2/2022Update) | |
| Intel Core i7-3632QM CPU 2.20GHz (Ivy Bridge), 1 CPU, 8 logical and 4 physical cores | |
| .NET SDK 8.0.101 | |
| [Host] : .NET 8.0.1 (8.0.123.58001), X64 RyuJIT AVX [AttachedDebugger] | |
| Job-CRZKKL : .NET 8.0.1 (8.0.123.58001), X64 RyuJIT AVX | |
| </code></pre> | |
| <pre><code>InvocationCount=15 IterationCount=13 RunStrategy=ColdStart | |
| UnrollFactor=1 WarmupCount=3 | |
| </code></pre> | |
| <table> | |
| <thead><tr><th>Method </th><th>Count</th><th>Mean </th><th>Error </th><th>StdDev</th><th>Median </th><th>Ratio</th><th>RatioSD</th><th>Rank</th><th>Gen0</th><th>Gen1</th><th>Allocated</th><th>Alloc Ratio</th> | |
| </tr> | |
| </thead><tbody><tr><td>Linq</td><td>100</td><td>17.03 μs</td><td>42.16 μs</td><td>35.21 μs</td><td>7.473 μs</td><td>1.00</td><td>0.00</td><td>1</td><td>-</td><td>-</td><td>1027 B</td><td>1.00</td> | |
| </tr><tr><td>LinqStatic</td><td>100</td><td>25.32 μs</td><td>66.22 μs</td><td>55.30 μs</td><td>9.340 μs</td><td>1.50</td><td>0.64</td><td>2</td><td>-</td><td>-</td><td>1027 B</td><td>1.00</td> | |
| </tr><tr><td>NoAllocToSpanEnumerableStatic</td><td>100</td><td>103.84 μs</td><td>315.80 μs</td><td>263.71 μs</td><td>31.973 μs</td><td>4.88</td><td>1.98</td><td>4</td><td>-</td><td>-</td><td>1051 B</td><td>1.02</td> | |
| </tr><tr><td>NoAllocAsSpanStatic</td><td>100</td><td>78.39 μs</td><td>268.20 μs</td><td>223.96 μs</td><td>17.187 μs</td><td>2.69</td><td>1.26</td><td>3</td><td>-</td><td>-</td><td>999 B</td><td>0.97</td> | |
| </tr><tr><td>RefStructLinqStructStatic</td><td>100</td><td>223.90 μs</td><td>877.46 μs</td><td>732.72 μs</td><td>20.407 μs</td><td>4.53</td><td>4.91</td><td>5</td><td>-</td><td>-</td><td>809 B</td><td>0.79</td> | |
| </tr><tr><td>StructLinqStaticZeroAlloc</td><td>100</td><td>292.21 μs</td><td>1,195.45 μs</td><td>998.26 μs</td><td>12.613 μs</td><td>4.20</td><td>6.94</td><td>6</td><td>-</td><td>-</td><td>761 B</td><td>0.74</td> | |
| </tr><tr><td>StructLinqStaticZeroPerformanceAlloc</td><td>100</td><td>283.16 μs</td><td>1,161.36 μs</td><td>969.79 μs</td><td>14.507 μs</td><td>4.00</td><td>6.72</td><td>6</td><td>-</td><td>-</td><td>761 B</td><td>0.74</td> | |
| </tr><tr><td>Linq</td><td>1000</td><td>77.94 μs</td><td>102.03 μs</td><td>85.20 μs</td><td>54.960 μs</td><td>1.00</td><td>0.00</td><td>1</td><td>-</td><td>-</td><td>7811 B</td><td>1.00</td> | |
| </tr><tr><td>LinqStatic</td><td>1000</td><td>74.65 μs</td><td>58.95 μs</td><td>49.23 μs</td><td>63.400 μs</td><td>1.11</td><td>0.33</td><td>1</td><td>-</td><td>-</td><td>7811 B</td><td>1.00</td> | |
| </tr><tr><td>NoAllocToSpanEnumerableStatic</td><td>1000</td><td>333.49 μs</td><td>277.78 μs</td><td>231.96 μs</td><td>302.393 μs</td><td>4.93</td><td>1.45</td><td>5</td><td>-</td><td>-</td><td>8675 B</td><td>1.11</td> | |
| </tr><tr><td>NoAllocAsSpanStatic</td><td>1000</td><td>191.13 μs</td><td>288.30 μs</td><td>240.74 μs</td><td>133.520 μs</td><td>2.38</td><td>0.65</td><td>2</td><td>-</td><td>-</td><td>8643 B</td><td>1.11</td> | |
| </tr><tr><td>RefStructLinqStructStatic</td><td>1000</td><td>314.11 μs</td><td>747.47 μs</td><td>624.17 μs</td><td>151.407 μs</td><td>2.93</td><td>1.28</td><td>4</td><td>-</td><td>-</td><td>6569 B</td><td>0.84</td> | |
| </tr><tr><td>StructLinqStaticZeroAlloc</td><td>1000</td><td>303.04 μs</td><td>954.71 μs</td><td>797.22 μs</td><td>93.773 μs</td><td>2.06</td><td>1.90</td><td>3</td><td>-</td><td>-</td><td>6521 B</td><td>0.83</td> | |
| </tr><tr><td>StructLinqStaticZeroPerformanceAlloc</td><td>1000</td><td>270.19 μs</td><td>834.84 μs</td><td>697.13 μs</td><td>75.280 μs</td><td>1.89</td><td>1.68</td><td>3</td><td>-</td><td>-</td><td>6521 B</td><td>0.83</td> | |
| </tr><tr><td>Linq</td><td>10000</td><td>487.01 μs</td><td>274.97 μs</td><td>229.61 μs</td><td>549.547 μs</td><td>1.00</td><td>0.00</td><td>1</td><td>-</td><td>-</td><td>72739 B</td><td>1.00</td> | |
| </tr><tr><td>LinqStatic</td><td>10000</td><td>434.23 μs</td><td>234.29 μs</td><td>195.64 μs</td><td>494.447 μs</td><td>1.14</td><td>0.86</td><td>1</td><td>-</td><td>-</td><td>72739 B</td><td>1.00</td> | |
| </tr><tr><td>NoAllocToSpanEnumerableStatic</td><td>10000</td><td>1,919.30 μs</td><td>1,250.77 μs</td><td>1,044.45 μs</td><td>2,247.220 μs</td><td>4.56</td><td>2.62</td><td>3</td><td>-</td><td>-</td><td>80683 B</td><td>1.11</td> | |
| </tr><tr><td>NoAllocAsSpanStatic</td><td>10000</td><td>1,147.08 μs</td><td>574.89 μs</td><td>480.06 μs</td><td>1,178.180 μs</td><td>2.59</td><td>1.02</td><td>3</td><td>-</td><td>-</td><td>80651 B</td><td>1.11</td> | |
| </tr><tr><td>RefStructLinqStructStatic</td><td>10000</td><td>1,289.87 μs</td><td>824.93 μs</td><td>688.85 μs</td><td>1,048.067 μs</td><td>3.23</td><td>1.76</td><td>3</td><td>-</td><td>-</td><td>64169 B</td><td>0.88</td> | |
| </tr><tr><td>StructLinqStaticZeroAlloc</td><td>10000</td><td>924.29 μs</td><td>825.47 μs</td><td>689.31 μs</td><td>754.093 μs</td><td>2.12</td><td>1.11</td><td>2</td><td>-</td><td>-</td><td>64121 B</td><td>0.88</td> | |
| </tr><tr><td>StructLinqStaticZeroPerformanceAlloc</td><td>10000</td><td>835.45 μs</td><td>832.44 μs</td><td>695.13 μs</td><td>651.660 μs</td><td>1.82</td><td>1.00</td><td>2</td><td>-</td><td>-</td><td>64121 B</td><td>0.88</td> | |
| </tr><tr><td>Linq</td><td>1000000</td><td>50,612.51 μs</td><td>24,954.45 μs</td><td>20,838.10 μs</td><td>41,931.267 μs</td><td>1.00</td><td>0.00</td><td>2</td><td>933.3333</td><td>466.6667</td><td>7449462 B</td><td>1.00</td> | |
| </tr><tr><td>LinqStatic</td><td>1000000</td><td>50,721.75 μs</td><td>28,266.20 μs</td><td>23,603.55 μs</td><td>43,100.287 μs</td><td>1.01</td><td>0.24</td><td>2</td><td>933.3333</td><td>466.6667</td><td>7449826 B</td><td>1.00</td> | |
| </tr><tr><td>NoAllocToSpanEnumerableStatic</td><td>1000000</td><td>71,570.22 μs</td><td>18,859.43 μs</td><td>15,748.48 μs</td><td>66,139.707 μs</td><td>1.52</td><td>0.40</td><td>3</td><td>933.3333</td><td>466.6667</td><td>8498018 B</td><td>1.14</td> | |
| </tr><tr><td>NoAllocAsSpanStatic</td><td>1000000</td><td>46,823.22 μs</td><td>8,652.38 μs</td><td>7,225.13 μs</td><td>45,998.967 μs</td><td>1.03</td><td>0.31</td><td>2</td><td>933.3333</td><td>466.6667</td><td>8497970 B</td><td>1.14</td> | |
| </tr><tr><td>RefStructLinqStructStatic</td><td>1000000</td><td>61,907.58 μs</td><td>11,337.82 μs</td><td>9,467.59 μs</td><td>56,572.453 μs</td><td>1.34</td><td>0.33</td><td>3</td><td>866.6667</td><td>400.0000</td><td>6400552 B</td><td>0.86</td> | |
| </tr><tr><td>StructLinqStaticZeroAlloc</td><td>1000000</td><td>41,577.96 μs</td><td>7,242.12 μs</td><td>6,047.50 μs</td><td>38,881.953 μs</td><td>0.93</td><td>0.30</td><td>1</td><td>866.6667</td><td>400.0000</td><td>6400504 B</td><td>0.86</td> | |
| </tr><tr><td>StructLinqStaticZeroPerformanceAlloc</td><td>1000000</td><td>39,547.39 μs</td><td>7,171.81 μs</td><td>5,988.78 μs</td><td>36,427.280 μs</td><td>0.87</td><td>0.26</td><td>1</td><td>866.6667</td><td>400.0000</td><td>6400523 B</td><td>0.86</td> | |
| </tr></tbody></table> | |
| </body> | |
| </html> |
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| using BenchmarkDotNet.Attributes; | |
| using BenchmarkDotNet.Engines; | |
| using BenchmarkDotNet.Running; | |
| using NoAlloq; | |
| using StructLinq; | |
| namespace LinqBenchmarks | |
| { | |
| internal class Program | |
| { | |
| static void Main(string[] args) | |
| { | |
| BenchmarkRunner.Run<LinqBenchmark>(); | |
| } | |
| } | |
| [MemoryDiagnoser] | |
| [RankColumn] | |
| [SimpleJob(RunStrategy.ColdStart,warmupCount:3,iterationCount:13, invocationCount:15)] | |
| public class LinqBenchmark | |
| { | |
| private User[] _users; | |
| [Params(100, 1_000, 10_000, 1_000_000)] | |
| public int Count { get; set; } | |
| [GlobalSetup] | |
| public void Setup() | |
| { | |
| _users = Enumerable.Range(0, Count).Select(static i => new User | |
| { | |
| Age = i % 38, | |
| Id = Guid.NewGuid(), | |
| LastName = $"Smith_{i}", | |
| Name = $"John", | |
| InternalId = i | |
| }).ToArray(); | |
| } | |
| [Benchmark(Baseline =true)] | |
| public void Linq() | |
| { | |
| var dtos = _users.Where(q => q.InternalId % 10 == 7).Select(u => u.MapToDto()).ToArray(); | |
| } | |
| [Benchmark] | |
| public void LinqStatic() | |
| { | |
| var dtos = _users.Where(static q => q.InternalId % 10 == 7).Select(static u => u.MapToDto()).ToArray(); | |
| } | |
| [Benchmark] | |
| public void NoAllocToSpanEnumerableStatic() | |
| { | |
| var dtos = _users.ToSpanEnumerable().Where(static q => q.InternalId % 10 == 7).Select(static u => u.MapToDto()).ToArray(); | |
| } | |
| [Benchmark] | |
| public void NoAllocAsSpanStatic() | |
| { | |
| var dtos = _users.AsSpan().Where(static q => q.InternalId % 10 == 7).Select(static u => u.MapToDto()).ToArray(); | |
| } | |
| [Benchmark] | |
| public void RefStructLinqStructStatic() | |
| { | |
| var dtos = _users.ToRefStructEnumerable().Where((in User q) => q.InternalId % 10 == 7).Select((in User u) => u.MapToDto()).ToArray(); | |
| } | |
| [Benchmark] | |
| public void StructLinqStaticZeroAlloc() | |
| { | |
| var dtos = _users.ToStructEnumerable().Where(static q => q.InternalId % 10 == 7, w=>w).Select(static u => u.MapToDto(), v=>v).ToArray(); | |
| } | |
| [Benchmark] | |
| public void StructLinqStaticZeroPerformanceAlloc() | |
| { | |
| var @where = new UserWhereFunc(); | |
| var @select = new UserDtoSelectFunc(); | |
| var dtos = _users.ToStructEnumerable() | |
| .Where(ref @where, w => w) | |
| .Select(ref @select, v => v, n => n) | |
| .ToArray(); | |
| } | |
| } | |
| struct RefUserDtoSelectFunc : IFunction<User, UserDto> | |
| { | |
| public UserDto Eval(User user) | |
| { | |
| return user.MapToDto(); | |
| } | |
| } | |
| struct RefUserWhereFunc : IFunction<User, bool> | |
| { | |
| public bool Eval(User user) | |
| { | |
| return user.InternalId % 10 == 7; | |
| } | |
| } | |
| struct UserDtoSelectFunc : IFunction<User, UserDto> | |
| { | |
| public readonly UserDto Eval(User user) | |
| { | |
| return user.MapToDto(); | |
| } | |
| } | |
| struct UserWhereFunc : IFunction<User, bool> | |
| { | |
| public readonly bool Eval(User user) | |
| { | |
| return user.InternalId % 10 == 7; | |
| } | |
| } | |
| public class User | |
| { | |
| public int Age { get; init; } | |
| public string Name { get; init; } | |
| public string LastName { get; init; } | |
| public Guid Id { get; init; } | |
| public int InternalId { get; init; } | |
| } | |
| static class UserExtensions | |
| { | |
| internal static UserDto MapToDto(this User user) | |
| { | |
| return new UserDto | |
| { | |
| Age = user.Age, | |
| LastName = user.LastName, | |
| Name = user.Name, | |
| Id = user.Id | |
| }; | |
| } | |
| } | |
| public class UserDto | |
| { | |
| public int Age { get; init; } | |
| public string Name { get; init; } | |
| public string LastName { get; init; } | |
| public Guid Id { get; init; } | |
| } | |
| } |
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