static void Main(string[] args)
{
// cmd line params variables
string dbConnStr = null;
int runID = 0;
int benchmarkMethodID = 0;
int n;
int maxN;
try
{
DateTime startTime = DateTime.Now;
//Console.WriteLine($"Args Count:" + args.Length.ToString());
//foreach (string s in args)
//{
// Console.WriteLine(s);
//}
//Console.ReadKey();
string errMsg = PerfUtil.GetCmdLineParams_DbNAndMaxN(args, out dbConnStr, out runID, out benchmarkMethodID, out n, out maxN);
//if (errMsg != null)
//{
// Console.WriteLine(errMsg);
//}
//Console.WriteLine($"Args: {dbConnStr}; {runID.ToString()}; {benchmarkMethodID.ToString()}; {n.ToString()}; {maxN.ToString()}");
//Console.ReadKey();
int[] a = new int[n];
int[] a2 = new int[n];
Random rand = new Random(89);
for (int i = 0; i < a.Length; i++)
{
a[i] = rand.Next();
a2[i] = rand.Next();
}
FastHashSet <SmallStruct> setWarmup = new FastHashSet <SmallStruct>();
setWarmup.Add(new SmallStruct(1, 2));
FastHashSet <SmallStruct> set = new FastHashSet <SmallStruct>();
double overheadNanoSecs = PerfUtil.GetTimestampOverheadInNanoSeconds();
PerfUtil.DoGCCollect();
int iterations = 1;
long startTicks;
long endTicks;
double ticks;
// this is enough to jit things and not put everything in the cache
//bool isContained = set.Contains(0);
iterations = 1;
startTicks = Stopwatch.GetTimestamp();
for (int i = 0; i < a.Length; i++)
{
set.Add(new SmallStruct(a[i], a2[i]));
}
endTicks = Stopwatch.GetTimestamp();
ticks = (double)(endTicks - startTicks);
double nanoSecs = PerfUtil.GetNanoSecondsFromTicks(ticks, Stopwatch.Frequency) - overheadNanoSecs;
PerfDb.InsertMeasurement(dbConnStr, runID, benchmarkMethodID, n, iterations, nanoSecs, startTime, DateTime.Now);
}
catch (Exception ex)
{
Console.Write(ex.ToString());
if (!string.IsNullOrEmpty(dbConnStr))
{
// write error to db
PerfDb.InsertRunError(dbConnStr, runID, benchmarkMethodID, ex);
}
else
{
// log error to file
}
}
}
static void Main(string[] args)
{
// cmd line params variables
string dbConnStr = null;
int runID = 0;
int benchmarkMethodID = 0;
int n;
int maxN;
try
{
DateTime startTime = DateTime.Now;
//Console.WriteLine($"Args Count:" + args.Length.ToString());
//foreach (string s in args)
//{
// Console.WriteLine(s);
//}
//Console.ReadKey();
string errMsg = PerfUtil.GetCmdLineParams_DbNAndMaxN(args, out dbConnStr, out runID, out benchmarkMethodID, out n, out maxN);
//if (errMsg != null)
//{
// Console.WriteLine(errMsg);
//}
//Console.WriteLine($"Args: {dbConnStr}; {runID.ToString()}; {benchmarkMethodID.ToString()}; {n.ToString()}; {maxN.ToString()}");
//Console.ReadKey();
int[] a;
int[] c;
HashSet <int> set = new HashSet <int>();
BenchUtil.PopulateArrays25_25_50PctUnique(maxN, out a, out c);
// in a real world scenario, we will have probably have recently added the items into the set, so no need to try to clear the cache or anything
for (int i = 0; i < maxN; i++)
{
set.Add(a[i]);
}
double overheadNanoSecs = PerfUtil.GetTimestampOverheadInNanoSeconds();
PerfUtil.DoGCCollect();
int iterations = 1;
long startTicks;
long endTicks;
double ticks;
// this is enough to jit things and not put everything in the cache
bool isContained = set.Contains(0);
if (maxN <= 1000)
{
iterations = 1;
// there amount of time taken for these is too small to measure just one iteration - so we measure multiple iterations in a loop and get the time for these
// the mean time is this total time / iterations
// for really small operations, like a single contains on a hashet that has 8 items you would probably want to call at least a feww hundred Contains
// and then average that - the maxN wouldn't work too well if that was just 8
startTicks = Stopwatch.GetTimestamp();
for (int i = 0; i < maxN; i++)
{
set.Contains(c[i]);
}
endTicks = Stopwatch.GetTimestamp();
ticks = ((endTicks - startTicks) * n) / (double)maxN;
}
else
{
iterations = 1;
startTicks = Stopwatch.GetTimestamp();
for (int i = 0; i < n; i++) // loop overhead is ok because we assume there will be some loop in real-world scenario
{
set.Contains(c[i]);
}
endTicks = Stopwatch.GetTimestamp();
ticks = (double)(endTicks - startTicks);
}
double nanoSecs = PerfUtil.GetNanoSecondsFromTicks(ticks, Stopwatch.Frequency) - overheadNanoSecs;
PerfDb.InsertMeasurement(dbConnStr, runID, benchmarkMethodID, n, iterations, nanoSecs, startTime, DateTime.Now);
}
catch (Exception ex)
{
Console.Write(ex.ToString());
if (!string.IsNullOrEmpty(dbConnStr))
{
// write error to db
PerfDb.InsertRunError(dbConnStr, runID, benchmarkMethodID, ex);
}
else
{
// log error to file
}
}
}