예제 #1
0
        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
                }
            }
        }
예제 #2
0
        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
                }
            }
        }