Larger read buffer size (#10)

* Larger read buffer size

Increased read buffer size to 4K from 2K, since 4K is a page size.  This decreased the time to read from the console when it's very busy from 5% of total test time, to 3% of total test time.

* Added Comments

src/ConsoleBuffer/ConsoleWrapper.cs

@@ -11,6 +11,11 @@ namespace ConsoleBuffer
 
     public sealed class ConsoleWrapper : IDisposable, INotifyPropertyChanged
     {
+        // Output buffer size for recieving data generated by the console
+        // This is a page size (4k) which is almost always the most
+        // efficiant block size to move memory
+        private const int OutputBufferSize = 4096;
+
         public Buffer Buffer { get; private set; }
 
         public string Command { get; private set; }
@@ -183,7 +188,7 @@ private void ReadConsoleTask()
         {
             using (var ptyOutput = new FileStream(this.readHandle, FileAccess.Read))
             {
-                var input = new byte[2048];
+                var input = new byte[OutputBufferSize];
 
                 while (!this.disposed)
                 {