您好我正在尝试创建一个用于perfmon的自定义性能计数器。以下代码运行良好,但我有一个问题..
使用此解决方案,我有一个更新性能计数器值的计时器,但是我不想运行此可执行文件来获取我需要的数据。这就是我希望能够将计数器安装为一次性的东西然后对数据进行perfmon查询(就像它对所有预安装的计数器一样)。
我怎样才能做到这一点?
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 = 100;
private static NetworkInterface lan = null;
private static PerformanceCounter perfCounter;
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;
}
}
private static void updatePerfCounters()
{
for (int i = 0; i < numberofSamples; i++)
{
perfCounter.RawValue = getTotalBytesReceived();
Console.WriteLine("perfCounter.RawValue = {0}", perfCounter.RawValue);
System.Threading.Thread.Sleep(sampleRateInMillis);
}
}
}
}
答案 0 :(得分:6)
在Win32中,性能计数器的工作方式是让PerfMon加载一个提供计数器值的DLL。
在.NET中,此DLL是一个存根,它使用共享内存与正在运行的.NET进程通信。该过程定期将新值推送到共享内存块,DLL使它们可用作性能计数器。
所以,基本上,你可能不得不在本机代码中实现你的性能计数器DLL,因为.NET性能计数器假设有一个进程正在运行。