eladmarg commented on issue #933:
URL: https://github.com/apache/lucenenet/issues/933#issuecomment-2016568078
its not related to the index / code.
all performance degradation by the filestream.
just to validate this, i changed the FSDirectory file stream with flags, and
the problem gone.
```csharp
file = new FileStream(
path: Path.Combine(parent.m_directory.FullName, name),
mode: FileMode.OpenOrCreate,
access: FileAccess.Write,
share: FileShare.ReadWrite,
bufferSize: CHUNK_SIZE,
FileOptions.Asynchronous | FileOptions.RandomAccess |
FileOptions.WriteThrough);
```
any chance to let Microsoft to know about it?
[here](https://github.com/dotnet/runtime/issues/new?assignees=&labels=tenet-performance&projects=&template=03_performance_issue.md&title=)
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