public virtual void AdjustDelays(Delays delays)
{
for (int i = 0; i < Delays.Count; i++)
{
AdjustDelay(delays, i);
}
}
public virtual void AdjustDelays(Delays delays)
{
for (int i = 0; i < Delays.Count; i++)
{
AdjustDelay(delays, i);
}
}
/// <exception cref="NumberFormatException"></exception>
/// <exception cref="IOException"></exception>
private void ParseLog()
{
StreamReader reader = new StreamReader(_logFileName);
long readTime = 0;
long writeTime = 0;
long syncTime = 0;
string line;
while ((line = reader.ReadLine()) != null)
{
if (line.StartsWith(LogConstants.ReadEntry))
{
readTime = ExtractNumber(line);
}
else
{
if (line.StartsWith(LogConstants.WriteEntry))
{
writeTime = ExtractNumber(line);
}
else if (line.StartsWith(LogConstants.SyncEntry))
{
syncTime = ExtractNumber(line);
}
}
}
reader.Close();
times = new Delays(readTime, writeTime, syncTime);
}
private void AdjustDelay(Delays delays, int index)
{
TicksStopWatch watch = new TicksStopWatch();
TicksTiming timing = new TicksTiming();
long difference;
long differencePerIteration;
long average = 0;
long oldAverage = 0;
long delay = delays.values[index];
long adjustedDelay = delay;
int adjustmentRuns = 1;
long targetRuntime = AdjustmentIterations * delay;
long minimumDelay = MinimumDelay();
WarmUpIterations(delay, timing);
do
{
watch.Start();
for (int i = 0; i < AdjustmentIterations; i++)
{
timing.WaitTicks(adjustedDelay);
}
watch.Stop();
difference = targetRuntime - watch.Elapsed();
differencePerIteration = difference / AdjustmentIterations;
if (-differencePerIteration > adjustedDelay)
{
adjustedDelay /= 2;
}
else
{
adjustedDelay += differencePerIteration;
oldAverage = average;
if (adjustmentRuns == 1)
{
average = adjustedDelay;
}
else
{
average = ((average * (adjustmentRuns - 1)) / adjustmentRuns) + (adjustedDelay /
adjustmentRuns);
}
adjustmentRuns++;
}
if (adjustedDelay <= 0)
{
break;
}
if ((Math.Abs(average - oldAverage) < (0.01 * delay)) && adjustmentRuns > 10)
{
break;
}
}while (true);
if (average < minimumDelay)
{
Sharpen.Runtime.Err.WriteLine(">> Smallest achievable delay: " + minimumDelay);
Sharpen.Runtime.Err.WriteLine(">> Required delay setting: " + average);
Sharpen.Runtime.Err.WriteLine(">> Using delay(0) to wait as short as possible.");
Sharpen.Runtime.Err.WriteLine(">> Results will not be accurate.");
average = 0;
}
delays.values[index] = average;
}
/// <exception cref="NumberFormatException"></exception>
private void ProcessResultsFiles(string resultsFile1, string resultsFile2)
{
Sysout("Delaying:");
try
{
DelayCalculation calculation = new DelayCalculation(resultsFile1, resultsFile2);
calculation.ValidateData();
if (!calculation.IsValidData())
{
ExitWithError("> Result files are invalid for delaying!");
}
_delays = calculation.CalculatedDelays();
Sysout("> Required delays:");
Sysout("> " + _delays);
Sysout("> Adjusting delay timer to match required delays...");
calculation.AdjustDelays(_delays);
Sysout("> Adjusted delays:");
Sysout("> " + _delays);
}
catch (IOException)
{
ExitWithError("> Could not open results file(s)!\n" + "> Please check the file name settings in IoBenchmark.properties."
);
}
}
/// <exception cref="Db4objects.Db4o.Ext.Db4oIOException"></exception>
public DelayingBin(IBin bin, Delays delays) : base(bin)
{
_delays = delays;
_timing = new TicksTiming();
}
public DelayingStorage(IStorage delegateAdapter, Delays delays) : base(delegateAdapter
)
{
_delays = delays;
}
/// <exception cref="Db4objects.Db4o.Ext.Db4oIOException"></exception>
public DelayingIoAdapter(IoAdapter delegateAdapter, string path, bool lockFile, long
initialLength, Delays delays) : this(delegateAdapter.Open(path, lockFile, initialLength
, false), delays)
{
}
public DelayingIoAdapter(IoAdapter delegateAdapter, Delays delays) : base(delegateAdapter
)
{
_delays = delays;
_timing = new TicksTiming();
}
/// <exception cref="Db4objects.Db4o.Ext.Db4oIOException"></exception>
public DelayingIoAdapter(IoAdapter delegateAdapter, string path, bool lockFile, long
initialLength, Delays delays) : this(delegateAdapter.Open(path, lockFile, initialLength
, false), delays)
{
}
public DelayingIoAdapter(IoAdapter delegateAdapter, Delays delays) : base(delegateAdapter
)
{
_delays = delays;
_timing = new TicksTiming();
}
private void AdjustDelay(Delays delays, int index)
{
TicksStopWatch watch = new TicksStopWatch();
TicksTiming timing = new TicksTiming();
long difference;
long differencePerIteration;
long average = 0;
long oldAverage = 0;
long delay = delays.values[index];
long adjustedDelay = delay;
int adjustmentRuns = 1;
long targetRuntime = AdjustmentIterations * delay;
long minimumDelay = MinimumDelay();
WarmUpIterations(delay, timing);
do
{
watch.Start();
for (int i = 0; i < AdjustmentIterations; i++)
{
timing.WaitTicks(adjustedDelay);
}
watch.Stop();
difference = targetRuntime - watch.Elapsed();
differencePerIteration = difference / AdjustmentIterations;
if (-differencePerIteration > adjustedDelay)
{
adjustedDelay /= 2;
}
else
{
adjustedDelay += differencePerIteration;
oldAverage = average;
if (adjustmentRuns == 1)
{
average = adjustedDelay;
}
else
{
average = ((average * (adjustmentRuns - 1)) / adjustmentRuns) + (adjustedDelay /
adjustmentRuns);
}
adjustmentRuns++;
}
if (adjustedDelay <= 0)
{
break;
}
if ((Math.Abs(average - oldAverage) < (0.01 * delay)) && adjustmentRuns > 10)
{
break;
}
}
while (true);
if (average < minimumDelay)
{
Sharpen.Runtime.Err.WriteLine(">> Smallest achievable delay: " + minimumDelay);
Sharpen.Runtime.Err.WriteLine(">> Required delay setting: " + average);
Sharpen.Runtime.Err.WriteLine(">> Using delay(0) to wait as short as possible.");
Sharpen.Runtime.Err.WriteLine(">> Results will not be accurate.");
average = 0;
}
delays.values[index] = average;
}
/// <exception cref="NumberFormatException"></exception>
/// <exception cref="IOException"></exception>
private void ParseLog()
{
StreamReader reader = new StreamReader(_logFileName);
long readTime = 0;
long writeTime = 0;
long seekTime = 0;
long syncTime = 0;
string line = null;
while ((line = reader.ReadLine()) != null)
{
if (line.StartsWith(LogConstants.ReadEntry))
{
readTime = ExtractNumber(line);
}
else
{
if (line.StartsWith(LogConstants.WriteEntry))
{
writeTime = ExtractNumber(line);
}
else
{
if (line.StartsWith(LogConstants.SeekEntry))
{
seekTime = ExtractNumber(line);
}
else
{
if (line.StartsWith(LogConstants.SyncEntry))
{
syncTime = ExtractNumber(line);
}
}
}
}
}
reader.Close();
times = new Delays(readTime, writeTime, seekTime, syncTime);
}
/// <exception cref="Db4objects.Db4o.Ext.Db4oIOException"></exception>
public DelayingBin(IBin bin, Delays delays) : base(bin)
{
_delays = delays;
_timing = new TicksTiming();
}
public DelayingStorage(IStorage delegateAdapter, Delays delays) : base(delegateAdapter
)
{
_delays = delays;
}
