function runFrom(i) {
    if (i === n) {   // Finished
      console.log("===== RESULT (find with in selector) ===== " + Math.floor(1000* n / profiler.elapsedSinceLastStep()) + " ops/s");
      profiler.step('Finished finding ' + n + ' docs');
      return cb();
    }

    d.find({ docNumber: { $in: ins[i] } }, function (err, docs) {
      if (docs.length !== arraySize) { return cb('One find didnt work'); }
      executeAsap(function () {
        runFrom(i + 1);
      });
    });
  }
Find documents with find and the $in operator