private CounterDescriptor CreateDescriptor(WorkerProcess w3wp)
{
//obtain reference to PerformanceCounter object
var pc = new PerformanceCounter("Process", "% Processor Time", PerformanceCounterProcessHelper.GetPerformanceCounterProcessName(w3wp.ProcessId), true);
//read value to start counter
pc.NextValue();
//setup descriptor object for central framework
var result = new IisWorkerProcessCpuCounterDescriptor
{
Name = w3wp.AppPoolName,
SystemCounter = pc,
ProcessId = w3wp.ProcessId,
Unit = "Percent",
MetricName = "CPUUtilization"
};
result.Dimensions.Add("SiteName", w3wp.AppPoolName);
return(result);
}
public IList <CounterDescriptor> UpdateCounterItems(IList <CounterDescriptor> counterItems)
{
ServerManager iisManager = new ServerManager();
var processes = iisManager.WorkerProcesses;
//remove old
var oldIds = new List <int>();
foreach (var counterDescriptor in counterItems.Cast <IisWorkerProcessCpuCounterDescriptor>())
{
if (!processes.Any(proc => proc.ProcessId == counterDescriptor.ProcessId) || !Process.GetProcesses().Any(process => process.Id == counterDescriptor.ProcessId))
{
oldIds.Add(counterDescriptor.ProcessId);
}
else
{
//fix names
var correctProcessName = PerformanceCounterProcessHelper.GetPerformanceCounterProcessName(counterDescriptor.ProcessId);
if (!String.Equals(counterDescriptor.SystemCounter.InstanceName, correctProcessName, StringComparison.InvariantCulture))
{
counterDescriptor.SystemCounter.InstanceName = correctProcessName;
}
}
}
counterItems = counterItems.Cast <IisWorkerProcessCpuCounterDescriptor>().Where(counter => !oldIds.Contains(counter.ProcessId)).Cast <CounterDescriptor>().ToList();
//add new
foreach (var w3wp in processes)
{
if (!counterItems.Cast <IisWorkerProcessCpuCounterDescriptor>().Any(rd => rd.ProcessId == w3wp.ProcessId) && Process.GetProcesses().Any(process => process.Id == w3wp.ProcessId))
{
counterItems.Add(CreateDescriptor(w3wp));
}
}
return(counterItems);
}
