private void WaitSleep(int ms, AutoResetEvent ev, LoadCpuCallback lcc)
{
double waitMs = ms;
long tStart = _waitSleepStopwatch.ElapsedMilliseconds;
do
{
if (ev.WaitOne((int)Math.Round(waitMs)) == true)
{
lcc();
}
waitMs = waitMs - (_waitSleepStopwatch.ElapsedMilliseconds - tStart);
}while(waitMs > 0);
}
public void LoadCPU(ProcessorQueryAndControl.LogicalProcessorInfo lpInfo, AutoResetEvent ev, UpdateUsage uu, LoadCpuCallback lcc, ManualResetEvent stopEvent)
{
aLPNumber = lpInfo.AbsoluteProcessor;
ErrorLog.WriteLine("LoadCPU: LPNumber = " + aLPNumber);
//----------------------------------------------
// Intel Corporation
// Copyright © 2009/2010 - All Rights Reserved
// Department : SST/NTE
// Written by : Bill Hines - [email protected]
// Modified by : N/A
// Date : 12/4/2009
//----------------------------------------------
// Thread Variables
//----------------------------------------------
Thread.CurrentThread.Priority = ThreadPriority.Lowest;
Thread.CurrentThread.IsBackground = true;
ProcessThread threadCurrentThread = GetCurrentProcessThread();
#if USE_PERFORMANCE_COUNTER
PerformanceCounter _perfCounter = null;
try
{
_perfCounter = new PerformanceCounter("Processor", "% Processor Time", aLPNumber.ToString());
ErrorLog.WriteLine("LoadCPU: LPNumber = " + aLPNumber + ", PerformanceCounter.RawValue = " + _perfCounter.RawValue);
}
catch (Exception ex)
{
ErrorLog.LogException(ex);
return;
}
#else
ulong PERFORMANCE_FREQ = 0;
QueryPerformanceFrequency(out PERFORMANCE_FREQ);
ulong LastPerformanceCounter = 0;
QueryPerformanceCounter(out LastPerformanceCounter);
ulong IdleProcessorCycleTimeBufferLength = 0;
ulong[] IdleProcessorCycleTimeBuffer = null;
// First get the size required for the buffer
QueryIdleProcessorCycleTimeEx(lpInfo.GroupNumber,
ref IdleProcessorCycleTimeBufferLength,
IdleProcessorCycleTimeBuffer);
// Now create the buffer and get the data
IdleProcessorCycleTimeBuffer = new ulong[IdleProcessorCycleTimeBufferLength / sizeof(ulong)];
QueryIdleProcessorCycleTimeEx(lpInfo.GroupNumber,
ref IdleProcessorCycleTimeBufferLength,
IdleProcessorCycleTimeBuffer);
ulong LastIdleTime = IdleProcessorCycleTimeBuffer[lpInfo.GroupProcessor];
#endif
_stopEvent = stopEvent;
//----------------------------------------------
// Constants
//----------------------------------------------
const ulong FACTORIAL = 10;
const int iDefaultSleep = 100;
//----------------------------------------------
// LOcal Variables
//----------------------------------------------
bool bDebugPrint = false;
uint Iterations = 5000;
ulong LastCPUTime = (ulong)threadCurrentThread.TotalProcessorTime.Ticks;
ulong LastWallTime = (ulong)DateTime.Now.Ticks;
long LastUsageUpdate = DateTime.Now.Ticks;
ulong DeltaCPU = 0;
ulong DeltaWall = 0;
int _usage = 0;
//----------------------------------------------
// Load Current Thread
//----------------------------------------------
while (!_stopEvent.WaitOne(0))
{
try
{
ProcessorQueryAndControl.SetAffinity(lpInfo);
int tmpDesiredLoad = miDesiredCPULoad;
// calculate the usage
if (DateTime.Now.Ticks > LastUsageUpdate + (10000 * 1000))
{
#if USE_PERFORMANCE_COUNTER
_usage = (int)Math.Round(_perfCounter.NextValue(), 0);
#else
ulong CurrentIdleTime = 0;
ulong CurrentPerformanceCounter = 0;
QueryPerformanceCounter(out CurrentPerformanceCounter);
ulong PerformanceCounterDiff = CurrentPerformanceCounter - LastPerformanceCounter;
LastPerformanceCounter = CurrentPerformanceCounter;
QueryIdleProcessorCycleTimeEx(lpInfo.GroupNumber,
ref IdleProcessorCycleTimeBufferLength,
IdleProcessorCycleTimeBuffer);
CurrentIdleTime = IdleProcessorCycleTimeBuffer[lpInfo.GroupProcessor];
ulong IdleTimeDiff = CurrentIdleTime - LastIdleTime;
LastIdleTime = CurrentIdleTime;
double IdleTime = (double)IdleTimeDiff / PERFORMANCE_FREQ;
double IntervalDuration = ((double)PerformanceCounterDiff / PERFORMANCE_FREQ) * 1000;
//Console.WriteLine("IdleTimeDiff: " + IdleTimeDiff);
//Console.WriteLine("PerformanceCounterDiff: " + PerformanceCounterDiff);
//Console.WriteLine("IdleTime: " + IdleTime);
//Console.WriteLine("IntervalDuration: " + IntervalDuration);
double trueUsage = ((IntervalDuration - IdleTime) * 100) / IntervalDuration;
//Console.WriteLine("trueUsage: " + trueUsage);
_usage = (int)Math.Round(trueUsage);
if (_usage < 0)
_usage = 0;
else if (_usage > 100)
_usage = 100;
//Console.WriteLine("Usage: " + _usage);
if (_usage < miDesiredCPULoad - 10 || _usage > miDesiredCPULoad + 10)
{
ErrorLog.WriteLine("ProcLoad LP " + aLPNumber + ", Load Diff, U: " + _usage + ", L: " + miDesiredCPULoad);
}
#endif
LastUsageUpdate = DateTime.Now.Ticks;
if(uu != null)
uu(_usage);
}
// if the usage is higher than requested, adjust the requested usage down
if (_usage > tmpDesiredLoad)
{
tmpDesiredLoad = Math.Max(tmpDesiredLoad - (_usage - tmpDesiredLoad), 0);
}
// check if we need to process events
if (ev.WaitOne(0) == true)
lcc();
// cpu load code
if (((double)tmpDesiredLoad / 100) <= 0.1)
{
const int TIME = 100;
double percentBusy = (double)tmpDesiredLoad / 100.0;
double percentIdle = (double)1.0 - percentBusy;
if (percentBusy > 0)
{
DateTime stopTime = DateTime.Now.AddMilliseconds((int)(percentBusy * TIME));
while (DateTime.Now < stopTime) { };
}
WaitSleep((int)(percentIdle * TIME), ev, lcc);
}
else
{
double Target = ((double)tmpDesiredLoad / 100);
int SleepTime = (int)((1 * iDefaultSleep) * (1 - Target));
ulong FactorialNumber = (FACTORIAL - (FACTORIAL - ((ulong)tmpDesiredLoad / FACTORIAL))) + 0;
if (StressTheCPU(Iterations, FactorialNumber, ev, lcc))
{
ulong CurrentCPUTime = (ulong)threadCurrentThread.TotalProcessorTime.Ticks;
ulong CurrentWallTime = (ulong)DateTime.Now.Ticks;
DeltaCPU = (CurrentCPUTime - LastCPUTime);
DeltaWall = (CurrentWallTime - LastWallTime);
if (DeltaCPU == 0) DeltaCPU = 1;
double Multiplier = Math.Round(((Target * DeltaWall) / DeltaCPU), 2);
if (Multiplier > 5.0) Multiplier = 5.0;
Iterations = (uint)(Iterations * Multiplier);
if (Iterations < 1) Iterations = 1;
if (Iterations > (uint.MaxValue - 100000000))
Iterations = (uint.MaxValue - 10000000);
LastCPUTime = CurrentCPUTime;
LastWallTime = CurrentWallTime;
if (SleepTime > 0) WaitSleep(SleepTime, ev, lcc);
if (bDebugPrint)
{
string dataString = String.Format(
"Iterations = {0}, Multiplier = {1}, Sleep = {2}, LP = {3}, DW = {4}, DCPU = {5}",
Iterations, Multiplier, SleepTime, aLPNumber, DeltaWall, DeltaCPU);
Debug.WriteLine(dataString);
}
}
}
Thread.Sleep(0);
}
catch (Exception ex)
{
ErrorLog.LogException(ex);
}
}
Thread.CurrentThread.Priority = ThreadPriority.Normal;
}
private void WaitSleep(int ms, AutoResetEvent ev, LoadCpuCallback lcc)
{
double waitMs = ms;
long tStart = _waitSleepStopwatch.ElapsedMilliseconds;
do
{
if (ev.WaitOne((int)Math.Round(waitMs)) == true)
lcc();
waitMs = waitMs - (_waitSleepStopwatch.ElapsedMilliseconds - tStart);
}
while(waitMs > 0);
}
private Boolean StressTheCPU(uint aIterations, ulong aFactorialNumber, AutoResetEvent ev, LoadCpuCallback lcc)
{
//----------------------------------------------
// Intel Corporation
// Copyright © 2009/2010 - All Rights Reserved
// Department : SST/NTE
// Written by : Bill Hines - [email protected]
// Modified by : N/A
// Date : 12/4/2009
//----------------------------------------------
const int SLEEP_ITERATIONS = 2500;
for (uint i = 0; i < aIterations; i++)
{
Factorial(aFactorialNumber);
if (!_stopEvent.WaitOne(0))
{
if ((aIterations > SLEEP_ITERATIONS) &&
(i % SLEEP_ITERATIONS) == 1)
Thread.Sleep(0);
}
else
return false;
if (i % 100 == 50 && ev.WaitOne(0) == true)
lcc();
}
return true;
}
public void LoadCPU(ProcessorQueryAndControl.LogicalProcessorInfo lpInfo, AutoResetEvent ev, UpdateUsage uu, LoadCpuCallback lcc, ManualResetEvent stopEvent)
{
aLPNumber = lpInfo.AbsoluteProcessor;
ErrorLog.WriteLine("LoadCPU: LPNumber = " + aLPNumber);
//----------------------------------------------
// Intel Corporation
// Copyright © 2009/2010 - All Rights Reserved
// Department : SST/NTE
// Written by : Bill Hines - [email protected]
// Modified by : N/A
// Date : 12/4/2009
//----------------------------------------------
// Thread Variables
//----------------------------------------------
Thread.CurrentThread.Priority = ThreadPriority.Lowest;
Thread.CurrentThread.IsBackground = true;
ProcessThread threadCurrentThread = GetCurrentProcessThread();
#if USE_PERFORMANCE_COUNTER
PerformanceCounter _perfCounter = null;
try
{
_perfCounter = new PerformanceCounter("Processor", "% Processor Time", aLPNumber.ToString());
ErrorLog.WriteLine("LoadCPU: LPNumber = " + aLPNumber + ", PerformanceCounter.RawValue = " + _perfCounter.RawValue);
}
catch (Exception ex)
{
ErrorLog.LogException(ex);
return;
}
#else
ulong PERFORMANCE_FREQ = 0;
QueryPerformanceFrequency(out PERFORMANCE_FREQ);
ulong LastPerformanceCounter = 0;
QueryPerformanceCounter(out LastPerformanceCounter);
ulong IdleProcessorCycleTimeBufferLength = 0;
ulong[] IdleProcessorCycleTimeBuffer = null;
// First get the size required for the buffer
QueryIdleProcessorCycleTimeEx(lpInfo.GroupNumber,
ref IdleProcessorCycleTimeBufferLength,
IdleProcessorCycleTimeBuffer);
// Now create the buffer and get the data
IdleProcessorCycleTimeBuffer = new ulong[IdleProcessorCycleTimeBufferLength / sizeof(ulong)];
QueryIdleProcessorCycleTimeEx(lpInfo.GroupNumber,
ref IdleProcessorCycleTimeBufferLength,
IdleProcessorCycleTimeBuffer);
ulong LastIdleTime = IdleProcessorCycleTimeBuffer[lpInfo.GroupProcessor];
#endif
_stopEvent = stopEvent;
//----------------------------------------------
// Constants
//----------------------------------------------
const ulong FACTORIAL = 10;
const int iDefaultSleep = 100;
//----------------------------------------------
// LOcal Variables
//----------------------------------------------
bool bDebugPrint = false;
uint Iterations = 5000;
ulong LastCPUTime = (ulong)threadCurrentThread.TotalProcessorTime.Ticks;
ulong LastWallTime = (ulong)DateTime.Now.Ticks;
long LastUsageUpdate = DateTime.Now.Ticks;
ulong DeltaCPU = 0;
ulong DeltaWall = 0;
int _usage = 0;
//----------------------------------------------
// Load Current Thread
//----------------------------------------------
while (!_stopEvent.WaitOne(0))
{
try
{
ProcessorQueryAndControl.SetAffinity(lpInfo);
int tmpDesiredLoad = miDesiredCPULoad;
// calculate the usage
if (DateTime.Now.Ticks > LastUsageUpdate + (10000 * 1000))
{
#if USE_PERFORMANCE_COUNTER
_usage = (int)Math.Round(_perfCounter.NextValue(), 0);
#else
ulong CurrentIdleTime = 0;
ulong CurrentPerformanceCounter = 0;
QueryPerformanceCounter(out CurrentPerformanceCounter);
ulong PerformanceCounterDiff = CurrentPerformanceCounter - LastPerformanceCounter;
LastPerformanceCounter = CurrentPerformanceCounter;
QueryIdleProcessorCycleTimeEx(lpInfo.GroupNumber,
ref IdleProcessorCycleTimeBufferLength,
IdleProcessorCycleTimeBuffer);
CurrentIdleTime = IdleProcessorCycleTimeBuffer[lpInfo.GroupProcessor];
ulong IdleTimeDiff = CurrentIdleTime - LastIdleTime;
LastIdleTime = CurrentIdleTime;
double IdleTime = (double)IdleTimeDiff / PERFORMANCE_FREQ;
double IntervalDuration = ((double)PerformanceCounterDiff / PERFORMANCE_FREQ) * 1000;
//Console.WriteLine("IdleTimeDiff: " + IdleTimeDiff);
//Console.WriteLine("PerformanceCounterDiff: " + PerformanceCounterDiff);
//Console.WriteLine("IdleTime: " + IdleTime);
//Console.WriteLine("IntervalDuration: " + IntervalDuration);
double trueUsage = ((IntervalDuration - IdleTime) * 100) / IntervalDuration;
//Console.WriteLine("trueUsage: " + trueUsage);
_usage = (int)Math.Round(trueUsage);
if (_usage < 0)
{
_usage = 0;
}
else if (_usage > 100)
{
_usage = 100;
}
//Console.WriteLine("Usage: " + _usage);
if (_usage < miDesiredCPULoad - 10 || _usage > miDesiredCPULoad + 10)
{
ErrorLog.WriteLine("ProcLoad LP " + aLPNumber + ", Load Diff, U: " + _usage + ", L: " + miDesiredCPULoad);
}
#endif
LastUsageUpdate = DateTime.Now.Ticks;
if (uu != null)
{
uu(_usage);
}
}
// if the usage is higher than requested, adjust the requested usage down
if (_usage > tmpDesiredLoad)
{
tmpDesiredLoad = Math.Max(tmpDesiredLoad - (_usage - tmpDesiredLoad), 0);
}
// check if we need to process events
if (ev.WaitOne(0) == true)
{
lcc();
}
// cpu load code
if (((double)tmpDesiredLoad / 100) <= 0.1)
{
const int TIME = 100;
double percentBusy = (double)tmpDesiredLoad / 100.0;
double percentIdle = (double)1.0 - percentBusy;
if (percentBusy > 0)
{
DateTime stopTime = DateTime.Now.AddMilliseconds((int)(percentBusy * TIME));
while (DateTime.Now < stopTime)
{
}
;
}
WaitSleep((int)(percentIdle * TIME), ev, lcc);
}
else
{
double Target = ((double)tmpDesiredLoad / 100);
int SleepTime = (int)((1 * iDefaultSleep) * (1 - Target));
ulong FactorialNumber = (FACTORIAL - (FACTORIAL - ((ulong)tmpDesiredLoad / FACTORIAL))) + 0;
if (StressTheCPU(Iterations, FactorialNumber, ev, lcc))
{
ulong CurrentCPUTime = (ulong)threadCurrentThread.TotalProcessorTime.Ticks;
ulong CurrentWallTime = (ulong)DateTime.Now.Ticks;
DeltaCPU = (CurrentCPUTime - LastCPUTime);
DeltaWall = (CurrentWallTime - LastWallTime);
if (DeltaCPU == 0)
{
DeltaCPU = 1;
}
double Multiplier = Math.Round(((Target * DeltaWall) / DeltaCPU), 2);
if (Multiplier > 5.0)
{
Multiplier = 5.0;
}
Iterations = (uint)(Iterations * Multiplier);
if (Iterations < 1)
{
Iterations = 1;
}
if (Iterations > (uint.MaxValue - 100000000))
{
Iterations = (uint.MaxValue - 10000000);
}
LastCPUTime = CurrentCPUTime;
LastWallTime = CurrentWallTime;
if (SleepTime > 0)
{
WaitSleep(SleepTime, ev, lcc);
}
if (bDebugPrint)
{
string dataString = String.Format(
"Iterations = {0}, Multiplier = {1}, Sleep = {2}, LP = {3}, DW = {4}, DCPU = {5}",
Iterations, Multiplier, SleepTime, aLPNumber, DeltaWall, DeltaCPU);
Debug.WriteLine(dataString);
}
}
}
Thread.Sleep(0);
}
catch (Exception ex)
{
ErrorLog.LogException(ex);
}
}
Thread.CurrentThread.Priority = ThreadPriority.Normal;
}
private Boolean StressTheCPU(uint aIterations, ulong aFactorialNumber, AutoResetEvent ev, LoadCpuCallback lcc)
{
//----------------------------------------------
// Intel Corporation
// Copyright © 2009/2010 - All Rights Reserved
// Department : SST/NTE
// Written by : Bill Hines - [email protected]
// Modified by : N/A
// Date : 12/4/2009
//----------------------------------------------
const int SLEEP_ITERATIONS = 2500;
for (uint i = 0; i < aIterations; i++)
{
Factorial(aFactorialNumber);
if (!_stopEvent.WaitOne(0))
{
if ((aIterations > SLEEP_ITERATIONS) &&
(i % SLEEP_ITERATIONS) == 1)
{
Thread.Sleep(0);
}
}
else
{
return(false);
}
if (i % 100 == 50 && ev.WaitOne(0) == true)
{
lcc();
}
}
return(true);
}
