Difficulty with Asynchronous File Reading Using I/O Operations in .NET 7 - advanced patterns
I'm sure I'm missing something obvious here, but I'm working on a personal project and I am working with an scenario while trying to read large text files asynchronously using `File.ReadAllTextAsync`. The method seems to block the execution unexpectedly, and I am not sure why. Here’s a simplified version of my code: ```csharp public async Task<string> ReadFileAsync(string filePath) { try { string content = await File.ReadAllTextAsync(filePath); return content; } catch (Exception ex) { Console.WriteLine($"behavior reading file: {ex.Message}"); throw; } } ``` I am calling this method within a loop that processes multiple files: ```csharp public async Task ProcessFilesAsync(IEnumerable<string> filePaths) { var tasks = filePaths.Select(filePath => ReadFileAsync(filePath)); await Task.WhenAll(tasks); } ``` However, I noticed that on certain occasions, especially when the files are particularly large (over 100 MB), the application becomes unresponsive for a few seconds, and I receive an `OperationCanceledException` if I try to cancel the operation. I have tested this on .NET 7 and have ensured that my application is not running out of memory. The files are being processed from a network drive, and I suspect that there may be some I/O contention happening. I have tried increasing the `ThreadPool.SetMinThreads` to allow for more concurrent operations, but it hasn’t improved performance. I also verified that the network drive isn’t working with any issues and that the latency is acceptable when performing other operations on it. Is there a best practice or a pattern for efficiently reading large files asynchronously in this context? Any insights on how to prevent the blocking behavior would be greatly appreciated! For context: I'm using C# on Windows. What am I doing wrong? My development environment is Linux. This is part of a larger web app I'm building. How would you solve this?