/// <summary>
/// Identify break in stability trend
/// </summary>
private void ExtractStabilityBreak()
{
Log.WriteLine("calculating stability break on [" + OVERALLTRANSACTIONSKEY + "] by reference [" + OVERALLUSERSKEY + "]");
try
{
// get timeseries
double[] throughput_values = _measureDetails.GetValuesAsDoubleArray(OVERALLTRANSACTIONSKEY);
double[] users_values = _measureDetails.GetValuesAsDoubleArray(OVERALLUSERSKEY);
double[] error_values = _measureDetails.GetValuesAsDoubleArray(OVERALLERRORSKEY);
TrendAnalyzer trendAnalyzer = new TrendAnalyzer();
trendAnalyzer.ReferenceSeries = users_values;
// search for trendbreak if stability is expected (duration testing)
Log.WriteLine("phase 1: stability of throughput");
int breakThroughput = trendAnalyzer.DetectTrendBreak_Stability(throughput_values);
Log.WriteLine("phase 2: stability of errors");
int breakErrors = trendAnalyzer.DetectTrendBreak_Stability(error_values);
// break is lowest break level
int breakResult = (breakThroughput < breakErrors) ? breakThroughput : breakErrors;
trendAnalyzer.BreakIndex = breakResult;
_variables.Add(TRENDBREAKSTABILITYPRCKEY, trendAnalyzer.GetBreakPercentage_Progress().ToString("0"));
Log.WriteLine(string.Format("trend break STABILITY: break on percentage={0:0}%", trendAnalyzer.GetBreakPercentage_Progress()));
}
catch (Exception e)
{
Log.WriteLine("ERROR calculation of stability trend break failed");
Log.WriteLine(e.Message);
}
}
/// <summary>
/// Identify break in ramp up trend
/// </summary>
private void ExtractRampupBreak()
{
Log.WriteLine("calculating ramp up break on [" + OVERALLTRANSACTIONSKEY + "] by reference [" + OVERALLUSERSKEY + "]");
try
{
// get timeseries
// double[] throughput_values = _measureDetails.GetValuesAsDoubleArray(OVERALLTRANSACTIONSKEY);
double[] responsetimes_values = _measureDetails.GetValuesAsDoubleArray(OVERALLRESPONSETIMEKEY);
double[] users_values = _measureDetails.GetValuesAsDoubleArray(OVERALLUSERSKEY);
TrendAnalyzer trendAnalyzer = new TrendAnalyzer();
trendAnalyzer.ReferenceSeries = users_values;
// search for trend break if stable ramp-up is expected (stress testing)
// trendAnalyzer.DetectTrendBreak_Rampup_Throughput(throughput_values); // based on stable rise of throughput (needs more complexity, first try alternative)
trendAnalyzer.DetectTrendBreak_Rampup_Responsetimes(responsetimes_values); // based on stability of response times
_variables.Add(TRENDBREAKRAMPUPPRCKEY, trendAnalyzer.GetBreakPercentage_Reference().ToString("0"));
_variables.Add(TRENDBREAKRAMPUPUSRKEY, trendAnalyzer.GetBreakReferenceValue().ToString());
Log.WriteLine(string.Format("trend break RAMP UP: break on percentage={0:0}% users={1}", trendAnalyzer.GetBreakPercentage_Reference(), trendAnalyzer.GetBreakReferenceValue()));
}
catch (Exception e)
{
Log.WriteLine("ERROR calculation of ramp-up trend break failed");
Log.WriteLine(e.Message);
}
}