message: Removed CCheckQueueSpeed benchmark
  This benchmark's runtime was rather unpredictive on different machines, not really a useful benchmark.
  This is a port of Core (2nd commit)
diff: #include <boost/thread/thread.hpp>
  -// This Benchmark tests the CheckQueue with the lightest
  -// weight Checks, so it should make any lock contention
  -// particularly visible
  static const int MIN_CORES = 2;
  static const size_t BATCHES = 101;
  static const size_t BATCH_SIZE = 30;
  static const int PREVECTOR_SIZE = 28;
  static const int QUEUE_BATCH_SIZE = 128;
  -static void CCheckQueueSpeed(benchmark::State& state)
  -{
  - struct FakeJobNoWork {
  - bool operator()()
  - {
  - return true;
  - }
  - void swap(FakeJobNoWork& x){};
  - };
  - CCheckQueue<FakeJobNoWork> queue {QUEUE_BATCH_SIZE};
  - boost::thread_group tg;
  - for (auto x = 0; x < std::max(MIN_CORES, GetNumCores()); ++x) {
  - tg.create_thread([&]{queue.Thread();});
  - }
  - while (state.KeepRunning()) {
  - CCheckQueueControl<FakeJobNoWork> control(&queue);
  -
  - // We call Add a number of times to simulate the behavior of adding
  - // a block of transactions at once.
  -
  - std::vector<std::vector<FakeJobNoWork>> vBatches(BATCHES);
  - for (auto& vChecks : vBatches) {
  - vChecks.resize(BATCH_SIZE);
  - }
  - for (auto& vChecks : vBatches) {
  - // We can't make vChecks in the inner loop because we want to measure
  - // the cost of getting the memory to each thread and we might get the same
  - // memory
  - control.Add(vChecks);
  - }
  - // control waits for completion by RAII, but
  - // it is done explicitly here for clarity
  - control.Wait();
  - }
  - tg.interrupt_all();
  - tg.join_all();
  -}
  // This Benchmark tests the CheckQueue with a slightly realistic workload,
  // where checks all contain a prevector that is indirect 50% of the time
  @@ -100,5 +60,4 @@ static void CCheckQueueSpeedPrevectorJob(benchmark::State& state)
  tg.interrupt_all();
  tg.join_all();
  }
  -BENCHMARK(CCheckQueueSpeed, 29000);
  BENCHMARK(CCheckQueueSpeedPrevectorJob, 1400);
  