测试结果表明ExtensibleBuffer在扩容的时候，不会因为其ElementType所占用的字节不同而产生不同的GC（List会，比如测试数据里List int的GC是List byte的四倍）
于此同时，测试时的V1是一般的标准写法，V2则是优化写法
最后，测试结果表明ExtensibleBuffer在插入次数小于1000次时，插入性能比List略慢，但是GC要少几十倍
在插入次数大于等于1000次时，任何类型的插入性能均接近List的性能或者更快，ElementType所占用的字节越多，ExtensibleBuffer快的速度越多（测试结果表明可以快
1~5倍），同时GC比List少50~上百万倍注意，ExtensibleBuffer目前仅支持非托管ElementType（byte/short/int/long等类型，详见使用说明）
BenchmarkDotNet=v0.13.1, OS=macOS Monterey 12.0.1 (21A559) [Darwin 21.1.0]
Intel Core i9-8950HK CPU 2.90GHz (Coffee Lake), 1 CPU, 12 logical and 6 physical cores
.NET SDK=6.0.301
[Host] : .NET 5.0.11 (5.0.1121.47308), X64 RyuJIT
ShortRun : .NET 5.0.11 (5.0.1121.47308), X64 RyuJIT
Job=ShortRun Platform=AnyCpu Runtime=.NET 5.0
IterationCount=1 LaunchCount=1 WarmupCount=1
| Method | testCount | Mean | Error | Gen 0 | Gen 1 | Gen 2 | Allocated |
|---|---|---|---|---|---|---|---|
| ByteExtensibleBufferInsertV1 | 100 | 336.7 ns | NA | 0.0067 | 0.0033 | 0.0005 | 40 B |
| ByteExtensibleBufferInsertV2 | 100 | 266.1 ns | NA | 0.0062 | 0.0029 | 0.0010 | 40 B |
| ByteListInsertV1 | 100 | 263.3 ns | NA | 0.0687 | - | - | 432 B |
| ByteListInsertV2 | 100 | 158.2 ns | NA | 0.0253 | - | - | 160 B |
| IntExtensibleBufferInsertV1 | 100 | 414.9 ns | NA | 0.0062 | 0.0029 | 0.0010 | 40 B |
| IntExtensibleBufferInsertV2 | 100 | 388.6 ns | NA | 0.0062 | 0.0029 | 0.0010 | 40 B |
| IntListInsertV1 | 100 | 299.4 ns | NA | 0.1884 | - | - | 1,184 B |
| IntListInsertV2 | 100 | 174.9 ns | NA | 0.0725 | - | - | 456 B |
| ByteExtensibleBufferInsertV1 | 1000 | 1,993.4 ns | NA | 0.0038 | - | - | 40 B |
| ByteExtensibleBufferInsertV2 | 1000 | 1,263.9 ns | NA | 0.0057 | 0.0019 | - | 40 B |
| ByteListInsertV1 | 1000 | 1,745.1 ns | NA | 0.3643 | - | - | 2,296 B |
| ByteListInsertV2 | 1000 | 1,524.0 ns | NA | 0.1678 | - | - | 1,056 B |
| IntExtensibleBufferInsertV1 | 1000 | 3,004.0 ns | NA | 0.0038 | - | - | 40 B |
| IntExtensibleBufferInsertV2 | 1000 | 1,984.6 ns | NA | 0.0038 | - | - | 40 B |
| IntListInsertV1 | 1000 | 2,133.6 ns | NA | 1.3390 | - | - | 8,424 B |
| IntListInsertV2 | 1000 | 1,644.5 ns | NA | 0.6447 | - | - | 4,056 B |
| ByteExtensibleBufferInsertV1 | 10000 | 19,268.8 ns | NA | - | - | - | 40 B |
| ByteExtensibleBufferInsertV2 | 10000 | 10,564.6 ns | NA | - | - | - | 40 B |
| ByteListInsertV1 | 10000 | 16,149.6 ns | NA | 5.2490 | 0.0610 | - | 33,112 B |
| ByteListInsertV2 | 10000 | 14,426.8 ns | NA | 1.6022 | - | - | 10,056 B |
| IntExtensibleBufferInsertV1 | 10000 | 20,047.8 ns | NA | - | - | - | 40 B |
| IntExtensibleBufferInsertV2 | 10000 | 12,251.8 ns | NA | - | - | - | 40 B |
| IntListInsertV1 | 10000 | 20,068.5 ns | NA | 20.8130 | 0.0305 | - | 131,400 B |
| IntListInsertV2 | 10000 | 15,270.7 ns | NA | 6.3629 | - | - | 40,056 B |
| ByteExtensibleBufferInsertV1 | 100000 | 132,670.4 ns | NA | - | - | - | 40 B |
| ByteExtensibleBufferInsertV2 | 100000 | 60,098.9 ns | NA | - | - | - | 41 B |
| ByteListInsertV1 | 100000 | 192,424.0 ns | NA | 41.5039 | 41.5039 | 41.5039 | 262,574 B |
| ByteListInsertV2 | 100000 | 180,816.9 ns | NA | 31.0059 | 31.0059 | 31.0059 | 100,069 B |
| IntExtensibleBufferInsertV1 | 100000 | 164,444.5 ns | NA | - | - | - | 40 B |
| IntExtensibleBufferInsertV2 | 100000 | 106,641.1 ns | NA | - | - | - | 40 B |
| IntListInsertV1 | 100000 | 484,184.1 ns | NA | 285.6445 | 285.6445 | 285.6445 | 1,049,077 B |
| IntListInsertV2 | 100000 | 313,635.5 ns | NA | 124.5117 | 124.5117 | 124.5117 | 400,098 B |
| ByteExtensibleBufferInsertV1 | 1000000 | 1,261,051.5 ns | NA | - | - | - | 42 B |
| ByteExtensibleBufferInsertV2 | 1000000 | 869,128.0 ns | NA | - | - | - | 41 B |
| ByteListInsertV1 | 1000000 | 2,336,066.3 ns | NA | 496.0938 | 496.0938 | 496.0938 | 2,097,808 B |
| ByteListInsertV2 | 1000000 | 1,992,171.6 ns | NA | 248.0469 | 248.0469 | 248.0469 | 1,000,157 B |
| IntExtensibleBufferInsertV1 | 1000000 | 1,746,490.8 ns | NA | - | - | - | 44 B |
| IntExtensibleBufferInsertV2 | 1000000 | 1,056,615.8 ns | NA | - | - | - | 41 B |
| IntListInsertV1 | 1000000 | 5,295,862.7 ns | NA | 1996.0938 | 1996.0938 | 1996.0938 | 8,389,768 B |
| IntListInsertV2 | 1000000 | 3,480,617.8 ns | NA | 996.0938 | 996.0938 | 996.0938 | 4,000,392 B |
| ByteExtensibleBufferInsertV1 | 10000000 | 18,716,193.7 ns | NA | - | - | - | 50 B |
| ByteExtensibleBufferInsertV2 | 10000000 | 7,778,869.9 ns | NA | - | - | - | 45 B |
| ByteListInsertV1 | 10000000 | 27,874,372.8 ns | NA | 1468.7500 | 1468.7500 | 1468.7500 | 33,555,781 B |
| ByteListInsertV2 | 10000000 | 14,637,528.1 ns | NA | 500.0000 | 500.0000 | 500.0000 | 10,000,217 B |
| IntExtensibleBufferInsertV1 | 10000000 | 33,108,877.6 ns | NA | - | - | - | 510 B |
| IntExtensibleBufferInsertV2 | 10000000 | 9,219,745.7 ns | NA | - | - | - | 50 B |
| IntListInsertV1 | 10000000 | 70,517,701.4 ns | NA | 3857.1429 | 3857.1429 | 3857.1429 | 134,219,966 B |
| IntListInsertV2 | 10000000 | 31,683,073.7 ns | NA | 937.5000 | 937.5000 | 937.5000 | 40,000,443 B |
| ByteExtensibleBufferInsertV1 | 100000000 | 174,848,366.3 ns | NA | - | - | - | 152 B |
| ByteExtensibleBufferInsertV2 | 100000000 | 54,386,794.6 ns | NA | - | - | - | 99 B |
| ByteListInsertV1 | 100000000 | 254,879,998.0 ns | NA | 4500.0000 | 4500.0000 | 4500.0000 | 268,437,768 B |
| ByteListInsertV2 | 100000000 | 171,825,885.0 ns | NA | 666.6667 | 666.6667 | 666.6667 | 100,000,520 B |
| IntExtensibleBufferInsertV1 | 100000000 | 332,814,853.0 ns | NA | - | - | - | 512 B |
| IntExtensibleBufferInsertV2 | 100000000 | 90,691,119.0 ns | NA | - | - | - | 123 B |
| IntListInsertV1 | 100000000 | 608,906,342.0 ns | NA | 6000.0000 | 6000.0000 | 6000.0000 | 1,073,744,912 B |
| IntListInsertV2 | 100000000 | 368,851,437.0 ns | NA | 500.0000 | 500.0000 | 500.0000 | 400,000,540 B |