在.Net内核中，有没有更快的方法来计算macos上的文件？

using System.IO;
using System.Threading.Tasks;

public static async Task<byte[]> ReadFileAsync(string filePath)
{
    using (FileStream fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read, bufferSize: 4096, useAsync: true))
    using (BufferedStream bufferedStream = new BufferedStream(fileStream))
    {
        byte[] buffer = new byte[fileStream.Length];
        await bufferedStream.ReadAsync(buffer, 0, buffer.Length);
        return buffer;
    }
}

using System.IO;
using System.Threading.Tasks;

public static async Task WriteFileAsync(string filePath, byte[] data)
{
    using (FileStream fileStream = new FileStream(filePath, FileMode.Create, FileAccess.Write, FileShare.Write, bufferSize: 4096, useAsync: true))
    using (BufferedStream bufferedStream = new BufferedStream(fileStream))
    {
        await bufferedStream.WriteAsync(data, 0, data.Length);
    }
}