paulirwin commented on issue #933:
URL: https://github.com/apache/lucenenet/issues/933#issuecomment-2016562323
@jeme Awesome find, thanks! I ran the benchmarks on my M1 Pro and sure
enough there's a large discrepancy, up to 179x slower on .NET 8:
```
BenchmarkDotNet v0.13.12, macOS Sonoma 14.3.1 (23D60) [Darwin 23.3.0]
Apple M1 Pro, 1 CPU, 8 logical and 8 physical cores
.NET SDK 8.0.202
[Host] : .NET 7.0.10 (7.0.1023.36312), Arm64 RyuJIT AdvSIMD
.NET 7.0 : .NET 7.0.10 (7.0.1023.36312), Arm64 RyuJIT AdvSIMD
.NET 8.0 : .NET 8.0.3 (8.0.324.11423), Arm64 RyuJIT AdvSIMD
Server=True
| Method | Job | Runtime | Mean | Error | StdDev
| Median | Ratio | RatioSD |
|------------ |--------- |---------
|-------------:|-----------:|-----------:|-------------:|-------:|--------:|
| Write1Kb | .NET 7.0 | .NET 7.0 | 32.04 us | 0.303 us | 0.283 us
| 32.02 us | 1.00 | 0.00 |
| Write1Kb | .NET 8.0 | .NET 8.0 | 5,209.14 us | 143.338 us | 418.125 us
| 5,123.13 us | 159.53 | 10.16 |
| | | | | |
| | | |
| Write2Kb | .NET 7.0 | .NET 7.0 | 31.66 us | 0.565 us | 0.501 us
| 31.65 us | 1.00 | 0.00 |
| Write2Kb | .NET 8.0 | .NET 8.0 | 5,395.70 us | 149.807 us | 441.708 us
| 5,269.80 us | 179.62 | 14.61 |
| | | | | |
| | | |
| Write4Kb | .NET 7.0 | .NET 7.0 | 31.57 us | 0.454 us | 0.379 us
| 31.57 us | 1.00 | 0.00 |
| Write4Kb | .NET 8.0 | .NET 8.0 | 5,494.01 us | 159.845 us | 468.799 us
| 5,481.13 us | 174.13 | 13.45 |
| | | | | |
| | | |
| Write512Kb | .NET 7.0 | .NET 7.0 | 5,272.88 us | 103.347 us | 169.802 us
| 5,307.65 us | 1.00 | 0.00 |
| Write512Kb | .NET 8.0 | .NET 8.0 | 5,439.62 us | 107.396 us | 147.005 us
| 5,404.71 us | 1.04 | 0.04 |
| | | | | |
| | | |
| Write1024Kb | .NET 7.0 | .NET 7.0 | 5,825.75 us | 127.982 us | 365.140 us
| 5,804.00 us | 1.00 | 0.00 |
| Write1024Kb | .NET 8.0 | .NET 8.0 | 5,619.59 us | 111.783 us | 223.243 us
| 5,591.22 us | 0.96 | 0.07 |
| | | | | |
| | | |
| Write16Mb | .NET 7.0 | .NET 7.0 | 14,257.58 us | 282.783 us | 347.283 us
| 14,285.54 us | 1.00 | 0.00 |
| Write16Mb | .NET 8.0 | .NET 8.0 | 12,851.95 us | 302.271 us | 891.252 us
| 12,353.02 us | 0.95 | 0.08 |
```
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