/// <summary>
/// Executes the provided <see cref="Action"/> several times to average out the time spent in execution.
/// </summary>
/// <param name="action">The action representing the test.</param>
/// <param name="fieldType">The field type to test (Delimited or FixedWidth).</param>
/// <param name="lngFileLength">The length of the file being parsed in bytes.</param>
/// <param name="strTestName">The name of the test.</param>
private static void _TestRunner(Action action, FieldType fieldType, long lngFileLength, string strTestName)
{
Stopwatch sw;
double dblAvgDuration;
// Clear out the trash so as to minimize the likelyhood of the garbage being taken out during the tests.
GC.Collect();
GC.WaitForFullGCComplete();
GC.WaitForPendingFinalizers();
sw = Stopwatch.StartNew();
for (int intTestIteration = 0; intTestIteration < PerformanceTests.ITERATIONS_OF_TESTS; ++intTestIteration)
{
action();
}
sw.Stop();
dblAvgDuration = ((double)sw.ElapsedMilliseconds) / ((double)PerformanceTests.ITERATIONS_OF_TESTS);
Console.WriteLine(string.Format("{0,-10} {1,21} - Avg. Time {2,10:#0.0} (ms) [{3,14}]",
fieldType.ToString(),
strTestName,
dblAvgDuration,
PerformanceTests._CalculateThroughput(lngFileLength, dblAvgDuration)));
}
/// <summary>
/// Calculates the throughput by the length of the file and the average duration to parse it.
/// </summary>
/// <param name="lngFileLength">The length of the file in bytes.</param>
/// <param name="dblAvgDuration">The average duration to parse the file.</param>
/// <returns>The string represntation of the throughput.</returns>
private static string _CalculateThroughput(long lngFileLength, double dblAvgDuration)
{
string strUnits;
double dblUnscaledThroughput, dblScaledThroughput;
// Multiply the length by 1000 change the units to seconds.
dblUnscaledThroughput = (((double)lngFileLength) * 1000d) / dblAvgDuration;
// Perform the scaling of the filelength.
PerformanceTests._ScaleValue(dblUnscaledThroughput, out dblScaledThroughput, out strUnits);
return(string.Format("{0,9:#0.000} {1}/s", dblScaledThroughput, strUnits));
}
static void Main(string[] args)
{
long lngFileLength;
double dblScaledValue;
string strRowsOfData, strUnits;
Console.Write(string.Format("Number of iterations of data [1 iteration = {0} rows]: ", PerformanceTests.NUMBER_OF_ROWS_IN_DATA));
strRowsOfData = Console.ReadLine();
if ((strRowsOfData.Length < 1) || !int.TryParse(strRowsOfData, out PerformanceTests.RowsOfData) || (PerformanceTests.RowsOfData < 1))
{
Console.WriteLine();
Console.WriteLine("Please supply a valid number.");
Console.WriteLine();
Console.WriteLine("<- Press Enter to Proceed ->");
Console.ReadLine();
return;
}
/////////////////////////
// Performance Testing //
/////////////////////////
// Make sure the user wants to perform it, since it will be a
// long running process.
Console.Write(Environment.NewLine);
Console.WriteLine("The following will generate performance information about the");
Console.WriteLine("GenericParser class.");
Console.Write(Environment.NewLine);
Console.WriteLine("Executions for each test: {0}", PerformanceTests.ITERATIONS_OF_TESTS);
Console.WriteLine("Rows of CSV Data: {0}", PerformanceTests.RowsOfData * PerformanceTests.NUMBER_OF_ROWS_IN_DATA);
Console.WriteLine("Rows of FixedWidth Data: {0}", PerformanceTests.RowsOfData * PerformanceTests.NUMBER_OF_ROWS_IN_DATA);
Console.Write(Environment.NewLine);
Console.WriteLine("<- Press Enter to Proceed ->");
Console.ReadLine();
///////////////////////////////////////////
// Start executing the performance tests //
///////////////////////////////////////////
PerformanceTests._GenerateSchemaFile();
PerformanceTests._GenerateCsvData();
lngFileLength = new FileInfo(CSV_DATA_FILE).Length;
PerformanceTests._ScaleValue((double)lngFileLength, out dblScaledValue, out strUnits);
Console.WriteLine("Size of Csv data file: {0,5:#0.00} {1}", dblScaledValue, strUnits);
Console.WriteLine();
PerformanceTests._TestRunner(new Action(PerformanceTests._TextDriverCsv), FieldType.Delimited, lngFileLength, "MS Text Driver");
PerformanceTests._TestRunner(new Action(PerformanceTests._TextFieldParserCsv), FieldType.Delimited, lngFileLength, "MS Text Field Parser");
PerformanceTests._TestRunner(new Action(PerformanceTests._CsvReader), FieldType.Delimited, lngFileLength, "CsvReader 3.7");
PerformanceTests._TestRunner(new Action(PerformanceTests._GenericParser10Csv), FieldType.Delimited, lngFileLength, "GenericParser 1.0");
PerformanceTests._TestRunner(new Action(PerformanceTests._GenericParser11Csv), FieldType.Delimited, lngFileLength, "GenericParser 1.1");
Console.Write(Environment.NewLine);
Console.WriteLine("============================================");
Console.Write(Environment.NewLine);
PerformanceTests._GenerateFixedWidthData();
lngFileLength = new FileInfo(PerformanceTests.FW_DATA_FILE).Length;
PerformanceTests._ScaleValue((double)lngFileLength, out dblScaledValue, out strUnits);
Console.WriteLine("Size of FixedWidth data file: {0,5:#0.00} {1}", dblScaledValue, strUnits);
Console.WriteLine();
PerformanceTests._TestRunner(new Action(PerformanceTests._TextDriverFixedWidth), FieldType.FixedWidth, lngFileLength, "MS Text Driver");
PerformanceTests._TestRunner(new Action(PerformanceTests._TextFieldParserFixedWidth), FieldType.FixedWidth, lngFileLength, "MS Text Field Parser");
PerformanceTests._TestRunner(new Action(PerformanceTests._GenericParser10FixedWidth), FieldType.FixedWidth, lngFileLength, "GenericParser 1.0");
PerformanceTests._TestRunner(new Action(PerformanceTests._GenericParser11FixedWidth), FieldType.FixedWidth, lngFileLength, "GenericParser 1.1");
Console.Write(Environment.NewLine);
Console.WriteLine("Completed Performance testing.");
Console.Write(Environment.NewLine);
Console.WriteLine("<- Press Enter to Exit ->");
Console.ReadLine();
// Cleanup the files we created.
File.Delete(PerformanceTests.CSV_DATA_FILE);
File.Delete(PerformanceTests.FW_DATA_FILE);
File.Delete(PerformanceTests.SCHEMA_FILE);
}