public static PerformanceResult RunConcurrentPerformanceTest(int numIterations, int degreeParallelism,
Action operation)
{
int i;
var taskList = new Task<PerformanceResult>[degreeParallelism];
long startTime = HiResTimer.Ticks;
int subIterations = numIterations/degreeParallelism;
for (i = 0; i < degreeParallelism; i++)
{
var t = new Task<PerformanceResult>(() => RunPerformanceTest(subIterations, operation, true));
taskList[i] = t;
}
for (i = 0; i < degreeParallelism; i++) taskList[i].Start();
Task.WaitAll(taskList);
long stopTime = HiResTimer.Ticks;
var rawData = new List<double>();
for (i = 0; i < degreeParallelism; i++)
{
rawData.AddRange(taskList[i].Result.DescriptiveResult.RawData);
}
var desc = new DescriptiveAnalysis(rawData);
desc.Analyze(false);
desc.AnalyzeHistogram(cHistogramBuckets);
var res = new PerformanceResult
{
IsValid = true,
Iterations = taskList.Sum(p => p.Result.Iterations),
DegreeOfParallelism = degreeParallelism,
TotalMilliseconds = ConvertToMs(startTime, stopTime),
TotalSeconds = ConvertToSeconds(startTime, stopTime),
TotalTicks = stopTime - startTime,
DescriptiveResult = desc.Result
};
for (i = 0; i < degreeParallelism; i++) taskList[i].Dispose();
return res;
}
public static PerformanceResult RunConcurrentPerformanceTest(int numIterations, int degreeParallelism,
Func<bool> operation)
{
int i;
var taskList = new Task<PerformanceResult>[degreeParallelism];
int subIterations = numIterations/degreeParallelism;
for (i = 0; i < degreeParallelism; i++)
{
var t = new Task<PerformanceResult>(() => RunPerformanceTest(subIterations, operation, true));
taskList[i] = t;
}
for (i = 0; i < degreeParallelism; i++) taskList[i].Start();
Task.WaitAll(taskList);
var rawData = new List<double>();
bool valid = true;
for (i = 0; i < degreeParallelism; i++)
{
valid &= taskList[i].Result.IsValid;
rawData.AddRange(taskList[i].Result.DescriptiveResult.RawData);
}
var desc = new DescriptiveAnalysis(rawData);
desc.Analyze(false);
desc.AnalyzeHistogram(cHistogramBuckets);
var res = new PerformanceResult
{
IsValid = valid,
TotalMilliseconds = taskList.Max(p => p.Result.TotalMilliseconds),
TotalSeconds = taskList.Max(p => p.Result.TotalSeconds),
TotalTicks = taskList.Max(p => p.Result.TotalTicks),
DescriptiveResult = desc.Result
};
for (i = 0; i < degreeParallelism; i++) taskList[i].Dispose();
return res;
}
private void RunSITests()
{
_dictResult = PerformancePatterns.RunPerformanceTest(cMinPerfIterations,
(() =>
{
var ndx = _intKeys[_rng.Next(0, _intKeys.Count)];
string desc;
DataRow[] rows = _intDataTable.Select(String.Format("codeColumn = {0}", ndx));
if (rows.Length > 0) desc = rows[0]["valueColumn"].ToString();
}));
Console.WriteLine(cResultFormat + " with int-keyed DataTable.", cMinPerfIterations,
_dictResult.TotalMilliseconds,
_dictResult.TotalSeconds);
_tableResult = PerformancePatterns.RunPerformanceTest(cMinPerfIterations,
(() =>
{
var ndx = _stringKeys[_rng.Next(0, _stringKeys.Count)];
string desc;
DataRow[] rows = _stringDataTable.Select("codeColumn = '" + ndx + "'");
if (rows.Length > 0) desc = rows[0]["valueColumn"].ToString();
}));
Console.WriteLine(cResultFormat + " with string-keyed DataTable.", cMinPerfIterations,
_tableResult.TotalMilliseconds,
_tableResult.TotalSeconds);
}
private void RunStringTests()
{
_dictResult = PerformancePatterns.RunPerformanceTest(cMinPerfIterations,
(() =>
{
var ndx = _stringKeys[_rng.Next(0, _stringKeys.Count)];
string desc;
_dictionary.TryGetValue(ndx, out desc);
}));
Console.WriteLine(cResultFormat + " with dictionary.", cMinPerfIterations, _dictResult.TotalMilliseconds,
_dictResult.TotalSeconds);
_tableResult = PerformancePatterns.RunPerformanceTest(cMinPerfIterations,
(() =>
{
var ndx = _stringKeys[_rng.Next(0, _stringKeys.Count)];
string desc;
DataRow[] rows = _stringDataTable.Select("codeColumn = '" + ndx + "'");
if (rows.Length > 0) desc = rows[0]["valueColumn"].ToString();
}));
Console.WriteLine(cResultFormat + " with DataTable.", cMinPerfIterations, _tableResult.TotalMilliseconds,
_tableResult.TotalSeconds);
}
public void PrintResult(PerformanceResult res)
{
Console.WriteLine(res.ToString());
}
