A High Performance WPF DataGrid (Extra)

Of course, even if I have tried everything to minimize the negative effects on the the performance of the mock data generator, GUI is GUI, it will drag it down anyway, but by how much? I decide to dig a little further.

Thanks to the nature of MVVM, it is easy to swap out the GUI V-VM with ... a CLI! Yes that's the capability MVVM is supposed to have, V-VM are dumb layers and replace them with another UI, business as usual!

I wrapped up Model, Common and BusinessLogic (refer to the source code I published on GitHub, link is at the bottom of part II) into a DLL, and wrote a console program:

using HighThroughputDataGrid.BusinessLogic;
using HighThroughputDataGrid.Common;
using System;
namespace HighOutputDataCli
{
    public class DataObserver : IObserver<double>
    {
        public PerformanceMonitor Performance { get; set; }
        public void OnCompleted() { }
        public void OnError(Exception error) { }
        public void OnNext(double value)
        {
            if(Performance != null) 
            {
                Performance.Add(value);
                Console.WriteLine("Max: {0:0.00}, Min: {1:0.00}, Avg: {2:0.00}", Performance.Maximum, Performance.Minimum, Performance.Average);
            }
        }
    }

    public class Program
    {
        static void Main(string[] args)
        {
            HighOutputDataSource source = new HighOutputDataSource
            {
                FreshRateObserver = new Observable<double>(),
                NumberOfRandomGenerators = 200
            };
            DataObserver observer = new DataObserver { Performance = new PerformanceMonitor() };
            source.FreshRateObserver.Subscribe(observer);
            source.Start();

            Console.ReadKey();
        }
    }
}

That's it, gives us the highest number the mock data generator could do (on my m5 tablet):
Max: 1079.91, Min: 968.99, Avg: 1032.01
Max: 1079.91, Min: 968.99, Avg: 1033.67
Max: 1079.91, Min: 968.99, Avg: 1031.02
Max: 1079.91, Min: 948.77, Avg: 1027.59
Max: 1079.91, Min: 948.77, Avg: 1025.02
Max: 1079.91, Min: 948.77, Avg: 1022.16
Max: 1079.91, Min: 948.77, Avg: 1019.44
Max: 1079.91, Min: 948.77, Avg: 1018.53
Max: 1079.91, Min: 948.77, Avg: 1016.13
Max: 1079.91, Min: 948.77, Avg: 1014.00
Max: 1079.91, Min: 948.77, Avg: 1014.55

It's about 8% - 15% higher than our super efficient WPF DataGrid application could possibly do, that shows the penalty of the modern fancy UI costs.

Previous:

• A High Performance WPF Datagrid Part I
• A High Performance WPF Datagrid Part II