/// <summary>
/// Simulate performance counter calculation using 3 samples
/// </summary>
/// <param name="perfCounter"></param>
private static void CalculatePerfCounter(PerfCounter perfCounter)
{
perfCounter.Initialize();
System.Threading.Thread.Sleep(1000);
perfCounter.NextValue();
System.Threading.Thread.Sleep(1000);
perfCounter.NextValue();
System.Threading.Thread.Sleep(1000);
perfCounter.NextValue();
perfCounter.Calculate();
}
public void PerfCounter_CalculateAverageResult_AverageResult()
{
var perfCounter = new PerfCounter("Memory", "Available MBytes", "none", "AvailableMBytes", "MB", "10%", "5%", "0", "automemory");
float result = 0;
perfCounter.Initialize();
System.Threading.Thread.Sleep(1000);
result += perfCounter.NextValue();
System.Threading.Thread.Sleep(1000);
result += perfCounter.NextValue();
System.Threading.Thread.Sleep(1000);
result += perfCounter.NextValue();
perfCounter.Calculate();
Assert.AreEqual(perfCounter.GetResult(), result / 3);
}
public void GetNextPlot()
{
int iNewVal = 0;
switch (CounterType)
{
case CounterTypes.CPU:
iNewVal = (int)PerfCounter.NextValue();
break;
case CounterTypes.RAM:
int iUsed = iTotalRam - (int)PerfCounter.NextValue();
iNewVal = (int)((float)iUsed / (float)iTotalRam * (float)100); // Convert to percentage.
break;
}
// Add new value to the short buffer.
for (int i = 0; i < _ShortBuffer.Length - 1; i++)
{
_ShortBuffer[i] = _ShortBuffer[i + 1];
}
_ShortBuffer[_ShortBuffer.Length - 1] = iNewVal;
// Add new value to the long buffer.
for (int i = 0; i < _LongBuffer.Length - 1; i++)
{
_LongBuffer[i] = _LongBuffer[i + 1];
}
_LongBuffer[_LongBuffer.Length - 1] = iNewVal;
// Calculate the mean over the short buffer.
ShortAverage = (int)_ShortBuffer.Average();
// Calculate the mean over the long buffer.
LongAverage = (int)_LongBuffer.Average();
}
public void PerfCounter_NextValueWithoutInitializingCounter_ThrowsAnException()
{
var perfCounter = new PerfCounter("Processor", "% Processor Time", "_Total", "ProcessorTime", "%", "5", "10", "0", "100");
perfCounter.NextValue();
}
