Lazy Initialization

github repo

The source code for all benchmarks are in Tools/Towel.Benchmarking.


BenchmarkDotNet=v0.13.0, OS=Windows 10.0.19042.1110 (20H2/October2020Update)
Intel Core i7-4790K CPU 4.00GHz (Haswell), 1 CPU, 8 logical and 4 physical cores
.NET SDK=6.0.100-preview.6.21355.2
  [Host]     : .NET 5.0.8 (5.0.821.31504), X64 RyuJIT
  Job-OIQAIQ : .NET 5.0.8 (5.0.821.31504), X64 RyuJIT

InvocationCount=1  UnrollFactor=1
Method N Mean Error StdDev Median Ratio RatioSD
Lazy 1 500.00 ns 0.000 ns 0.000 ns 500.0 ns 1.00 0.00
LazyNone 1 248.96 ns 19.473 ns 56.185 ns 200.0 ns 0.53 0.13
LazyPublicationOnly 1 428.09 ns 33.532 ns 92.918 ns 400.0 ns 0.93 0.19
SLazy 1 338.95 ns 21.142 ns 60.661 ns 300.0 ns 0.71 0.13
SLazyNoCatch 1 271.13 ns 23.314 ns 67.637 ns 300.0 ns 0.63 0.13
SLazyPublicationLock 1 370.67 ns 18.137 ns 45.836 ns 400.0 ns 0.74 0.09
SLazyPublicationLockNoCatch 1 230.00 ns 17.043 ns 50.252 ns 200.0 ns 0.51 0.10
SLazyNoLock 1 135.00 ns 16.258 ns 47.937 ns 100.0 ns 0.30 0.10
SLazyNoLockNoCatch 1 96.20 ns 7.401 ns 19.236 ns 100.0 ns 0.20 0.00
ValueLazy 1 401.02 ns 41.622 ns 121.413 ns 400.0 ns 0.76 0.22
ValueLazyNoCatch 1 413.27 ns 35.029 ns 102.180 ns 400.0 ns 0.71 0.10
ValueLazyPublicationLock 1 384.54 ns 49.337 ns 143.135 ns 300.0 ns 0.74 0.24
ValueLazyPublicationLockNoCatch 1 429.03 ns 33.915 ns 96.212 ns 400.0 ns 0.94 0.12
ValueLazyNoLock 1 161.00 ns 17.969 ns 52.982 ns 200.0 ns 0.31 0.10
ValueLazyNoLockNoCatch 1 137.37 ns 17.281 ns 50.681 ns 100.0 ns 0.27 0.13
Lazy 10 797.70 ns 26.703 ns 73.099 ns 800.0 ns 1.00 0.00
LazyNone 10 452.08 ns 19.463 ns 56.156 ns 500.0 ns 0.57 0.09
LazyPublicationOnly 10 551.55 ns 19.341 ns 56.113 ns 500.0 ns 0.70 0.09
SLazy 10 519.79 ns 17.142 ns 49.460 ns 500.0 ns 0.66 0.09
SLazyNoCatch 10 486.36 ns 12.531 ns 34.514 ns 500.0 ns 0.61 0.07
SLazyPublicationLock 10 554.55 ns 20.530 ns 56.546 ns 600.0 ns 0.70 0.09
SLazyPublicationLockNoCatch 10 522.58 ns 20.216 ns 57.349 ns 500.0 ns 0.66 0.10
SLazyNoLock 10 234.34 ns 17.671 ns 51.827 ns 200.0 ns 0.30 0.07
SLazyNoLockNoCatch 10 185.11 ns 12.546 ns 35.793 ns 200.0 ns 0.23 0.05
ValueLazy 10 562.24 ns 18.097 ns 52.789 ns 600.0 ns 0.71 0.09
ValueLazyNoCatch 10 495.24 ns 11.787 ns 21.554 ns 500.0 ns 0.62 0.06
ValueLazyPublicationLock 10 538.38 ns 19.305 ns 56.617 ns 500.0 ns 0.68 0.10
ValueLazyPublicationLockNoCatch 10 500.00 ns 0.000 ns 0.000 ns 500.0 ns 0.59 0.07
ValueLazyNoLock 10 177.00 ns 18.579 ns 54.781 ns 150.0 ns 0.22 0.07
ValueLazyNoLockNoCatch 10 173.68 ns 17.022 ns 48.839 ns 200.0 ns 0.22 0.06
Lazy 100 3,017.24 ns 60.662 ns 88.918 ns 3,000.0 ns 1.00 0.00
LazyNone 100 1,447.17 ns 30.595 ns 63.862 ns 1,400.0 ns 0.48 0.02
LazyPublicationOnly 100 2,177.22 ns 45.251 ns 117.615 ns 2,100.0 ns 0.75 0.06
SLazy 100 2,333.33 ns 47.513 ns 71.116 ns 2,300.0 ns 0.77 0.04
SLazyNoCatch 100 2,275.00 ns 45.535 ns 44.721 ns 2,300.0 ns 0.75 0.03
SLazyPublicationLock 100 2,515.38 ns 44.972 ns 37.553 ns 2,500.0 ns 0.82 0.02
SLazyPublicationLockNoCatch 100 2,469.57 ns 50.206 ns 63.495 ns 2,500.0 ns 0.82 0.03
SLazyNoLock 100 821.11 ns 18.232 ns 50.823 ns 800.0 ns 0.27 0.02
SLazyNoLockNoCatch 100 646.88 ns 20.086 ns 57.953 ns 600.0 ns 0.21 0.02
ValueLazy 100 2,483.33 ns 50.585 ns 84.515 ns 2,500.0 ns 0.83 0.04
ValueLazyNoCatch 100 2,296.88 ns 44.633 ns 69.488 ns 2,300.0 ns 0.76 0.03
ValueLazyPublicationLock 100 2,543.75 ns 52.167 ns 51.235 ns 2,500.0 ns 0.84 0.03
ValueLazyPublicationLockNoCatch 100 2,464.71 ns 50.292 ns 81.212 ns 2,500.0 ns 0.82 0.03
ValueLazyNoLock 100 770.67 ns 19.269 ns 48.695 ns 800.0 ns 0.25 0.02
ValueLazyNoLockNoCatch 100 434.02 ns 17.153 ns 49.763 ns 400.0 ns 0.15 0.02
Lazy 1000 27,294.85 ns 2,234.495 ns 6,482.675 ns 25,600.0 ns 1.00 0.00
LazyNone 1000 11,654.55 ns 229.937 ns 282.383 ns 11,600.0 ns 0.41 0.08
LazyPublicationOnly 1000 18,342.71 ns 1,821.793 ns 5,256.289 ns 18,500.0 ns 0.69 0.20
SLazy 1000 24,248.91 ns 1,477.564 ns 4,167.496 ns 22,900.0 ns 0.93 0.28
SLazyNoCatch 1000 22,102.11 ns 1,683.197 ns 4,829.409 ns 20,700.0 ns 0.83 0.21
SLazyPublicationLock 1000 22,403.61 ns 666.224 ns 1,778.287 ns 22,300.0 ns 0.84 0.18
SLazyPublicationLockNoCatch 1000 21,652.63 ns 427.869 ns 738.053 ns 21,400.0 ns 0.75 0.12
SLazyNoLock 1000 9,311.70 ns 882.598 ns 2,518.100 ns 8,400.0 ns 0.35 0.10
SLazyNoLockNoCatch 1000 5,009.09 ns 133.671 ns 368.169 ns 5,000.0 ns 0.19 0.04
ValueLazy 1000 20,703.45 ns 313.423 ns 459.412 ns 20,600.0 ns 0.72 0.13
ValueLazyNoCatch 1000 22,450.52 ns 1,748.793 ns 5,073.566 ns 20,600.0 ns 0.85 0.22
ValueLazyPublicationLock 1000 22,500.00 ns 444.912 ns 456.892 ns 22,300.0 ns 0.82 0.14
ValueLazyPublicationLockNoCatch 1000 21,664.29 ns 418.840 ns 371.291 ns 21,600.0 ns 0.79 0.11
ValueLazyNoLock 1000 7,920.00 ns 842.318 ns 2,416.768 ns 7,000.0 ns 0.31 0.13
ValueLazyNoLockNoCatch 1000 3,568.29 ns 239.881 ns 636.130 ns 3,300.0 ns 0.13 0.03
Lazy 10000 218,907.78 ns 9,542.685 ns 26,601.192 ns 208,050.0 ns 1.00 0.00
LazyNone 10000 110,638.89 ns 7,558.797 ns 21,070.906 ns 104,300.0 ns 0.51 0.12
LazyPublicationOnly 10000 140,023.86 ns 4,949.719 ns 13,632.964 ns 135,100.0 ns 0.65 0.10
SLazy 10000 182,800.00 ns 3,558.132 ns 4,626.577 ns 181,100.0 ns 0.81 0.09
SLazyNoCatch 10000 174,667.07 ns 2,857.663 ns 5,152.956 ns 173,050.0 ns 0.80 0.09
SLazyPublicationLock 10000 192,668.35 ns 3,845.807 ns 9,995.762 ns 187,800.0 ns 0.89 0.10
SLazyPublicationLockNoCatch 10000 191,693.26 ns 6,524.540 ns 18,079.470 ns 181,900.0 ns 0.89 0.13
SLazyNoLock 10000 109,163.04 ns 5,908.094 ns 16,663.883 ns 101,300.0 ns 0.51 0.09
SLazyNoLockNoCatch 10000 96,324.72 ns 6,224.112 ns 17,246.984 ns 91,500.0 ns 0.44 0.09
ValueLazy 10000 184,789.13 ns 5,450.772 ns 15,374.000 ns 176,450.0 ns 0.85 0.11
ValueLazyNoCatch 10000 167,550.00 ns 3,274.006 ns 3,503.150 ns 165,750.0 ns 0.74 0.09
ValueLazyPublicationLock 10000 190,793.10 ns 5,096.158 ns 13,950.651 ns 184,500.0 ns 0.88 0.11
ValueLazyPublicationLockNoCatch 10000 181,168.75 ns 3,608.904 ns 3,544.426 ns 180,250.0 ns 0.80 0.10
ValueLazyNoLock 10000 75,960.67 ns 3,119.263 ns 8,643.463 ns 73,200.0 ns 0.35 0.05
ValueLazyNoLockNoCatch 10000 37,846.67 ns 3,446.824 ns 9,608.367 ns 32,600.0 ns 0.18 0.05