public static void Collect(ref MachineInfo info)
{
if (info == null)
{
info = new MachineInfo();
}
//1、cpu占用率
if (_cpuCounter == null)
{
_cpuCounter = new PerformanceCounter();
_cpuCounter.CategoryName = "Processor";
_cpuCounter.CounterName = "% Processor Time";
_cpuCounter.InstanceName = "_Total";
}
/*
* 寄宿到iis下时，会报权限不足错误，参考 http://www.java123.net/998683.html
*/
info.CpuUsage = _cpuCounter.NextValue();
//2、内存占用率
//①物理内存
if (TotalPhysicalMemory == 0)
{
//获得物理内存
ManagementClass mc = new ManagementClass("Win32_ComputerSystem");
ManagementObjectCollection moc = mc.GetInstances();
foreach (ManagementObject mo in moc)
{
if (mo["TotalPhysicalMemory"] != null)
{
TotalPhysicalMemory = long.Parse(mo["TotalPhysicalMemory"].ToString());
}
}
}
//②可用内存
float availablebytes = 0;
ManagementClass mos = new ManagementClass("Win32_OperatingSystem");
foreach (ManagementObject mo in mos.GetInstances())
{
if (mo["FreePhysicalMemory"] != null)
{
availablebytes = 1024 * float.Parse(mo["FreePhysicalMemory"].ToString());
}
}
info.MemoryUsage = (1 - availablebytes / TotalPhysicalMemory) * 100;
info.Time = DateTime.Now;
}
public void CollectData()
{
string connId = Context.ConnectionId;
if (!connections.Contains(connId))
{
lock (locker)
{
if (!connections.Contains(connId))
{
connections.Add(connId);
}
}
}
_logger.Info("new client connected,connection id:" + connId);
if (_collecting)
{
return;
}
_collecting = true;
_tokenSrc = new CancellationTokenSource();
Task.Run(() =>
{
_logger.Info("client connected,monitor server start work");
MachineInfo info = new MachineInfo();
while (true)
{
if (_tokenSrc.IsCancellationRequested)
{
break;
}
try
{
MachineInfoCollector.Collect(ref info);
}
catch (Exception ex)
{
_logger.Error("收集服务器性能数据错误", ex);
break;
}
Clients.All.updateData(info);
Task.Delay(TimeSpan.FromMilliseconds(500)).Wait();
}
}, _tokenSrc.Token);
}