internal Cpu(int processorIndex, Cpuid[][] cpuid)
: base(cpuid[0][0].Name)
{
Cpuid = cpuid;
Vendor = cpuid[0][0].Vendor;
Family = cpuid[0][0].Family;
Model = cpuid[0][0].Model;
Stepping = cpuid[0][0].Stepping;
ProcessorIndex = processorIndex;
CoreCount = cpuid.Length;
// check if processor has MSRs
HasModelSpecificRegisters = cpuid[0][0].Data.GetLength(0) > 1 &&
(cpuid[0][0].Data[1, 3] & 0x20) != 0;
// check if processor has a TSC
HasTimeStampCounter = cpuid[0][0].Data.GetLength(0) > 1 &&
(cpuid[0][0].Data[1, 3] & 0x10) != 0;
// check if processor supports an invariant TSC
_isInvariantTimeStampCounter = cpuid[0][0].ExtData.GetLength(0) > 7 &&
(cpuid[0][0].ExtData[7, 3] & 0x100) != 0;
TotalLoad = CoreCount > 1 ? new Sensor("CPU Total", SensorType.Load) : null;
CoreLoads = new Sensor[CoreCount];
for (var i = 0; i < CoreLoads.Length; i++)
{
CoreLoads[i] = new Sensor(CoreString(i), SensorType.Load);
}
_cpuLoad = new CpuLoad(cpuid);
if (HasTimeStampCounter)
{
var mask = ThreadAffinity.Set(1UL << cpuid[0][0].Thread);
EstimateTimeStampCounterFrequency(
out _estimatedTimeStampCounterFrequency,
out _estimatedTimeStampCounterFrequencyError);
ThreadAffinity.Set(mask);
}
else
{
_estimatedTimeStampCounterFrequency = 0;
}
TimeStampCounterFrequency = _estimatedTimeStampCounterFrequency;
}
protected Cpu(int processorIndex, CpuId[][] cpuId) : base(cpuId[0][0].Name)
{
this.CpuId = cpuId;
Vendor = cpuId[0][0].Vendor;
Identifier = $"{Vendor.ToString()}/{processorIndex.ToString()}";
family = cpuId[0][0].Family;
model = cpuId[0][0].Model;
stepping = cpuId[0][0].Stepping;
this.processorIndex = processorIndex;
CoreCount = cpuId.Length;
// check if processor has MSRs
if (cpuId[0][0].Data.GetLength(0) > 1 &&
(cpuId[0][0].Data[1, 3] & 0x20) != 0)
{
HasModelSpecificRegisters = true;
}
else
{
HasModelSpecificRegisters = false;
}
// check if processor has a TSC
if (cpuId[0][0].Data.GetLength(0) > 1 &&
(cpuId[0][0].Data[1, 3] & 0x10) != 0)
{
HasTimeStampCounter = true;
}
else
{
HasTimeStampCounter = false;
}
// check if processor supports an invariant TSC
if (cpuId[0][0].ExtData.GetLength(0) > 7 &&
(cpuId[0][0].ExtData[7, 3] & 0x100) != 0)
{
isInvariantTimeStampCounter = true;
}
else
{
isInvariantTimeStampCounter = false;
}
TotalLoad = CoreCount > 1 ? new Sensor("CPU Total", 0, SensorType.Load, this) : null;
CoreLoads = new Sensor[CoreCount];
for (var i = 0; i < CoreLoads.Length; i++)
{
CoreLoads[i] = new Sensor(CoreString(i), i + 1,
SensorType.Load, this);
}
CpuLoad = new CpuLoad(cpuId);
if (CpuLoad.IsAvailable)
{
foreach (var sensor in CoreLoads)
{
ActivateSensor(sensor);
}
if (TotalLoad != null)
{
ActivateSensor(TotalLoad);
}
}
if (HasTimeStampCounter)
{
var mask = ThreadAffinity.Set(1UL << cpuId[0][0].Thread);
EstimateTimeStampCounterFrequency();
ThreadAffinity.Set(mask);
}
else
{
EstimatedTimeStampCounterFrequency = 0;
}
TimeStampCounterFrequency = EstimatedTimeStampCounterFrequency;
}
public override void Update()
{
if (CoreClocks.Any(x => x == null))
{
CoreClocks = CoreClocks.Where(x => x != null).ToArray();
}
if (CoreLoads.Any(x => x == null))
{
CoreLoads = CoreLoads.Where(x => x != null).ToArray();
}
if (CorePowers.Any(x => x == null))
{
CorePowers = CorePowers.Where(x => x != null).ToArray();
}
if (CoreTemperatures.Any(x => x == null))
{
CoreTemperatures = CoreTemperatures.Where(x => x != null).ToArray();
}
if (CoreVoltages.Any(x => x == null))
{
CoreVoltages = CoreVoltages.Where(x => x != null).ToArray();
}
if (HasTimeStampCounter && isInvariantTimeStampCounter)
{
// make sure always the same thread is used
var mask = ThreadAffinity.Set(1UL << CpuId[0][0].Thread);
// read time before and after getting the TSC to estimate the error
var firstTime = Stopwatch.GetTimestamp();
var timeStampCount = Opcode.Rdtsc();
var time = Stopwatch.GetTimestamp();
// restore the thread affinity mask
ThreadAffinity.Set(mask);
var delta = (double)(time - lastTime) / Stopwatch.Frequency;
var error = (double)(time - firstTime) / Stopwatch.Frequency;
// only use data if they are measured accuarte enough (max 0.1ms delay)
if (error < 0.0001)
{
// ignore the first reading because there are no initial values
// ignore readings with too large or too small time window
if (lastTime != 0 && delta > 0.5 && delta < 2)
{
TimeStampCounterFrequency =
(timeStampCount - lastTimeStampCount) / (1e6 * delta);
}
lastTimeStampCount = timeStampCount;
lastTime = time;
}
}
if (CpuLoad.IsAvailable)
{
CpuLoad.Update();
for (var i = 0; i < CoreLoads.Length; i++)
{
CoreLoads[i].Value = CpuLoad.GetCoreLoad(i);
}
if (TotalLoad != null)
{
TotalLoad.Value = CpuLoad.GetTotalLoad();
}
}
}
