OrigoDB approaching 100k transactions per second with Akka.NET and GetEventStore

CommandBatch.cs

[Serializable]
public class CommandBatch
{
    public readonly Command[] Commands;

    public CommandBatch(IEnumerable<Command> commands)
    {
        Commands = commands.ToArray();
    }
}

EventStoreJournal.cs

public class EventStoreJournal : IJournalWriter
{
    private readonly IEventStoreConnection _eventStore;
    private readonly IFormatter _formatter;


    public EventStoreJournal(IEventStoreConnection connection)
    {
        _formatter = new BinaryFormatter();
        _eventStore = connection;
    }

    public async Task AppendAsync(IEnumerable<Command> commands)
    {
        await _eventStore.AppendToStreamAsync("akka", ExpectedVersion.Any, ToEventData(commands));
    }

    private EventData ToEventData(IEnumerable<Command> commands)
    {
        var id = Guid.NewGuid();
        var stream = new MemoryStream();
        _formatter.Serialize(stream, new CommandBatch(commands));
        return new EventData(id, "akka", false, stream.ToArray(), null);

    }

    public void Dispose()
    {
        _eventStore.Close();
    }
}

results.txt

Batch size: 10
async elapsed: 00:00:00.3937971
Batch size: 20
async elapsed: 00:00:00.1693689
Batch size: 40
async elapsed: 00:00:00.1212457
Batch size: 80
async elapsed: 00:00:00.1002378
Batch size: 160
async elapsed: 00:00:00.1115851
Batch size: 320
async elapsed: 00:00:00.1092974
Batch size: 640
async elapsed: 00:00:00.1316378
Batch size: 1280
async elapsed: 00:00:00.1281053
Batch size: 2560
async elapsed: 00:00:00.1047487
Batch size: 5120
async elapsed: 00:00:00.1486240
Batch size: 10240
async elapsed: 00:00:00.1450204
Batch size: 20480
async elapsed: 00:00:00.1629530

100k tps is actually not correct, it's slightly less than 50k tps. There was a very silly mistake in the test code.