void UpdatePerfomanceData_CPU()
{
PerfomanceInfo_CPU[] infos = GetPerfomanceInfo_CPU(DataHelper.WmiService);
if (infos.Length == 1)
{
PerfomanceInfo_CPU info = GetBufferedPerfomanceInfo(infos[0]);
DashboardGauge.Scales["cpuTotal"].Value = info.Total;
DashboardGauge.Scales["cpuUser"].Value = info.Kernel + info.User;
DashboardGauge.Scales["cpuKernel"].Value = info.Kernel;
}
}
static PerfomanceInfo_CPU[] GetPerfomanceInfo_CPU(WMIService wmiService)
{
ManagementObject[] collection = wmiService.GetObjects(
"SELECT Name,PercentProcessorTime,PercentPrivilegedTime,PercentUserTime " +
"FROM Win32_PerfFormattedData_PerfOS_Processor " +
"WHERE Name=\'_Total\'",
false
);
PerfomanceInfo_CPU[] result = new PerfomanceInfo_CPU[collection.Length];
for (int i = 0; i < collection.Length; i++)
{
result[i] = new PerfomanceInfo_CPU(
(string)collection[i].Properties["Name"].Value,
(float)(UInt64)collection[i].Properties["PercentProcessorTime"].Value,
(float)(UInt64)collection[i].Properties["PercentPrivilegedTime"].Value,
(float)(UInt64)collection[i].Properties["PercentUserTime"].Value
);
}
return(result);
}
PerfomanceInfo_CPU GetBufferedPerfomanceInfo(PerfomanceInfo_CPU currentValue)
{
for (int i = 1; i < buffer.Length; i++)
{
buffer[i - 1] = buffer[i];
}
buffer[buffer.Length - 1] = currentValue;
float total = 0; float kernel = 0; float user = 0;
int n = 0;
for (int i = 0; i < buffer.Length; i++)
{
if (buffer[i] != null)
{
total += buffer[i].Total;
kernel += buffer[i].Kernel;
user += buffer[i].User;
n++;
}
}
return(new PerfomanceInfo_CPU(currentValue.Name, total / (float)n, kernel / (float)n, user / (float)n));
}
