VS Load Test and 'Total Bytes Sent' Performance Counter? - benchmarking

Question

I have a load test for a WCF service, where we are trying out different compression libraries and configurations and we need to measure the total number of mb sent during a test. Is there a performance counter that measure the relative trafic pr. test. If so, how do I add it to my load test - it seems that only a fraction of the performance counters are visible - E.g. under the category "Web Service", i don't see the performance counter "Total Bytes Received" in VS Load test, but I can find it in PerfMon.
Thanks

Answer 1

In the load test expand Counter Sets > Expand applicable > Right Click on Counter Sets > Add Counters
You can implement your own custom performance counter like so:
using System;
using System.Diagnostics;
using System.Net.NetworkInformation;
namespace PerfCounter
{
class PerfCounter
{
private const String categoryName = "Custom category";
private const String counterName = "Total bytes received";
private const String categoryHelp = "A category for custom performance counters";
private const String counterHelp = "Total bytes received on network interface";
private const String lanName = "Local Area Connection"; // change this to match your network connection
private const int sampleRateInMillis = 1000;
private const int numberofSamples = 200000;
private static NetworkInterface lan = null;
private static PerformanceCounter perfCounter;
private static long initialReceivedBytes;
static void Main(string[] args)
{
setupLAN();
setupCategory();
createCounters();
updatePerfCounters();
}
private static void setupCategory()
{
if (!PerformanceCounterCategory.Exists(categoryName))
{
CounterCreationDataCollection counterCreationDataCollection = new CounterCreationDataCollection();
CounterCreationData totalBytesReceived = new CounterCreationData();
totalBytesReceived.CounterType = PerformanceCounterType.NumberOfItems64;
totalBytesReceived.CounterName = counterName;
counterCreationDataCollection.Add(totalBytesReceived);
PerformanceCounterCategory.Create(categoryName, categoryHelp, PerformanceCounterCategoryType.MultiInstance, counterCreationDataCollection);
}
else
Console.WriteLine("Category {0} exists", categoryName);
}
private static void createCounters()
{
perfCounter = new PerformanceCounter(categoryName, counterName, false);
perfCounter.RawValue = getTotalBytesReceived();
}
private static long getTotalBytesReceived()
{
return lan.GetIPv4Statistics().BytesReceived;
}
private static void setupLAN()
{
NetworkInterface[] interfaces = NetworkInterface.GetAllNetworkInterfaces();
foreach (NetworkInterface networkInterface in interfaces)
{
if (networkInterface.Name.Equals(lanName))
lan = networkInterface;
}
initialReceivedBytes = lan.GetIPv4Statistics().BytesReceived;
}
private static void updatePerfCounters()
{
for (int i = 0; i < numberofSamples; i++)
{
perfCounter.RawValue = getTotalBytesReceived();
Console.WriteLine("received: {0} bytes", perfCounter.RawValue - initialReceivedBytes);
System.Threading.Thread.Sleep(sampleRateInMillis);
}
}
}
}