benchmark MetricFactory#get_metric

object Benchmark {

  def run : Unit = {

    print_title("MetricFactory#get_metric")

    for (n <- List(10000, 50000, 100000))

      for (t <- List(1, 16, 64))

        bm_metric_factory(n, t)

    print_title("Metric#sample")

    for (n <- List(200000, 1000000, 5000000))

      for (t <- List(1, 4, 16))

      })))

  private def bm_metric_factory(metrics: Int, threads: Int) : Unit =

    print_res(metrics + " metrics, " + threads + " thread(s)",

      mean_with_preheat(50, 10, (() => {

        measure(() => {

          in_parallel(threads, (() => {

            for (x <- (0 to 100))

              MetricFactory.get_metric(MetricKey(

                "benchmark-metric" + (scala.math.random * metrics).toInt,

                "sum", 1.toLong))

          }))

        }) / 100

      })))

  private def measure(proc: => Function0[Unit]) : Long = {

    val tstart = FnordMetric.now

    proc()

  // HACK !!! ;)

  private def print_title(title: String) =

    println(title + "\n" +

    println("\n\n" + title + "\n" +

      (("" /: (1 to (title.length)))((m,c) => m + "=")) + "\n")

}