private async Task PollNetworkUtilizationAsync()
{
var utilizationTable = _canQueryAdapterUtilization
? "Win32_PerfRawData_Tcpip_NetworkAdapter"
: "Win32_PerfRawData_Tcpip_NetworkInterface";
var query = $@"
SELECT Name,
Timestamp_Sys100NS,
BytesReceivedPersec,
BytesSentPersec,
PacketsReceivedPersec,
PacketsSentPersec
FROM {utilizationTable}";
var queryTime = DateTime.UtcNow.ToEpochTime();
var combinedUtil = new Interface.InterfaceUtilization
{
DateEpoch = queryTime,
InAvgBps = 0,
OutAvgBps = 0
};
using (var q = Wmi.Query(Endpoint, query))
{
foreach (var data in await q.GetDynamicResultAsync().ConfigureAwait(false))
{
var perfData = new PerfRawData(this, data);
var name = perfData.Identifier;
var iface = Interfaces.Find(i => name == GetCounterName(i.Name));
if (iface == null)
{
continue;
}
iface.InBps = (float)perfData.GetCalculatedValue("BytesReceivedPersec", 10000000);
iface.OutBps = (float)perfData.GetCalculatedValue("BytesSentPersec", 10000000);
iface.InPps = (float)perfData.GetCalculatedValue("PacketsReceivedPersec", 10000000);
iface.OutPps = (float)perfData.GetCalculatedValue("PacketsSentPersec", 10000000);
var util = new Interface.InterfaceUtilization
{
DateEpoch = queryTime,
InAvgBps = iface.InBps,
OutAvgBps = iface.OutBps
};
var netData = NetHistory.GetOrAdd(iface.Name, k => new List <Interface.InterfaceUtilization>(1024));
UpdateHistoryStorage(netData, util);
if (PrimaryInterfaces.Contains(iface))
{
combinedUtil.InAvgBps += util.InAvgBps;
combinedUtil.OutAvgBps += util.OutAvgBps;
}
}
}
UpdateHistoryStorage(CombinedNetHistory, combinedUtil);
}
private double GetCalculatedValue(PerfRawData previousData, string property, double scale)
{
var timestampDiff = Math.Max(1, Timestamp - previousData.Timestamp);
var valueDiff = Convert.ToUInt64(_data[property]) - Convert.ToUInt64(previousData._data[property]);
var scaledValueDiff = valueDiff * scale;
return(scaledValueDiff / timestampDiff);
}
private async Task PollVolumePerformanceUtilizationAsync()
{
const string query = @"
SELECT Name,
Timestamp_Sys100NS,
DiskReadBytesPersec,
DiskWriteBytesPersec
FROM Win32_PerfRawData_PerfDisk_LogicalDisk";
var queryTime = DateTime.UtcNow.ToEpochTime();
var combinedUtil = new Volume.VolumePerformanceUtilization
{
DateEpoch = queryTime,
ReadAvgBps = 0,
WriteAvgBps = 0
};
using (var q = Wmi.Query(Endpoint, query))
{
foreach (var data in await q.GetDynamicResultAsync().ConfigureAwait(false))
{
var perfData = new PerfRawData(this, data);
var name = perfData.Identifier;
var iface = Volumes.Find(i => name == GetCounterName(i.Name));
if (iface == null)
{
continue;
}
iface.ReadBps = (float)perfData.GetCalculatedValue("DiskReadBytesPersec", 10000000);
iface.WriteBps = (float)perfData.GetCalculatedValue("DiskWriteBytesPersec", 10000000);
var util = new Volume.VolumePerformanceUtilization
{
DateEpoch = queryTime,
ReadAvgBps = iface.ReadBps,
WriteAvgBps = iface.WriteBps
};
var netData = VolumePerformanceHistory.GetOrAdd(iface.Name, k => new List <Volume.VolumePerformanceUtilization>(1024));
UpdateHistoryStorage(netData, util);
//if (PrimaryInterfaces.Contains(iface))
{
combinedUtil.ReadAvgBps += util.ReadAvgBps;
combinedUtil.WriteAvgBps += util.WriteAvgBps;
}
}
}
UpdateHistoryStorage(CombinedVolumePerformanceHistory, combinedUtil);
}
public PerfRawData(WmiNode node, ManagementObject data)
{
_data = data;
Classname = data.ClassPath.ClassName;
Identifier = (string)_data["Name"];
Timestamp = Convert.ToUInt64(_data["Timestamp_Sys100NS"]);
string cacheKey = $"{Classname}.{Identifier}";
// "previous.previousData = null" to cleanup previousData from previousData. Otherwise we get a linked list which never cleans up.
node.previousPerfDataCache.AddOrUpdate(cacheKey, s => _previousData = this, (s, previous) =>
{
previous._previousData = null;
_previousData = previous;
return(this);
});
}
private async Task PollCpuUtilizationAsync()
{
var query = IsVMHost
? "SELECT Name, Timestamp_Sys100NS, PercentTotalRunTime FROM Win32_PerfRawData_HvStats_HyperVHypervisorLogicalProcessor WHERE Name = '_Total'"
: "SELECT Name, Timestamp_Sys100NS, PercentProcessorTime FROM Win32_PerfRawData_PerfOS_Processor WHERE Name = '_Total'";
var property = IsVMHost
? "PercentTotalRunTime"
: "PercentProcessorTime";
using (var q = Wmi.Query(Endpoint, query))
{
var data = await q.GetFirstResultAsync().ConfigureAwait(false);
if (data == null)
{
return;
}
var perfData = new PerfRawData(this, data);
if (IsVMHost)
{
CPULoad = (short)(perfData.GetCalculatedValue(property, 100D) / NumberOfLogicalProcessors);
}
else
{
CPULoad = (short)Math.Round((1 - perfData.GetCalculatedValue(property)) * 100);
}
var cpuUtilization = new CPUUtilization
{
DateEpoch = DateTime.UtcNow.ToEpochTime(),
AvgLoad = CPULoad
};
UpdateHistoryStorage(CPUHistory, cpuUtilization);
}
}
