diff --git a/arangosh/Benchmark/BenchmarkThread.h b/arangosh/Benchmark/BenchmarkThread.h
index fb3e6a2405..e158da93e0 100644
--- a/arangosh/Benchmark/BenchmarkThread.h
+++ b/arangosh/Benchmark/BenchmarkThread.h
@@ -196,7 +196,7 @@ namespace triagens {
             else {
               executeBatchRequest(numOps);
             }
-            _operationsCounter->done(_batchSize);
+            _operationsCounter->done(_batchSize > 0 ? _batchSize : 1);
           }
         }
 
diff --git a/arangosh/Benchmark/arangob.cpp b/arangosh/Benchmark/arangob.cpp
index ee902d432d..42f9c50377 100644
--- a/arangosh/Benchmark/arangob.cpp
+++ b/arangosh/Benchmark/arangob.cpp
@@ -367,6 +367,7 @@ int main (int argc, char* argv[]) {
     usleep(5000);
   }
 
+
   if (Delay) {
     Status("sleeping (startup delay)...");
     sleep(10);
@@ -453,7 +454,7 @@ int main (int argc, char* argv[]) {
     ret = EXIT_FAILURE;
   }
 
-  arangobExitFunction(ret, NULL);
+  arangobExitFunction(ret, nullptr);
 
   return ret;
 }
diff --git a/js/common/bootstrap/module-internal.js b/js/common/bootstrap/module-internal.js
index f47134e793..8aa8935e03 100644
--- a/js/common/bootstrap/module-internal.js
+++ b/js/common/bootstrap/module-internal.js
@@ -1341,6 +1341,78 @@
 // --SECTION--                                         public printing functions
 // -----------------------------------------------------------------------------
 
+////////////////////////////////////////////////////////////////////////////////
+/// @brief flatten
+////////////////////////////////////////////////////////////////////////////////
+
+  var hasOwnProperty = Function.prototype.call.bind(Object.prototype.hasOwnProperty);
+
+  exports.flatten = function (obj, seen) {
+    'use strict';
+
+    if (!obj || (typeof obj !== 'object' && typeof obj !== 'function')) {
+      return obj;
+    }
+
+    if (obj instanceof Date) {
+      return obj.toJSON();
+    }
+
+    if (!seen) {
+      seen = [];
+    }
+
+    var result = Object.create(null),
+      src = obj,
+      keys,
+      i,
+      key,
+      val;
+
+    if (typeof obj === 'function') {
+      result.__exec = String(obj);
+    }
+
+    while (src) {
+      if (
+        seen.indexOf(src) !== -1
+          || (obj.constructor && src === obj.constructor.prototype)
+      ) {
+        break;
+      }
+      seen.push(src);
+      keys = Object.getOwnPropertyNames(src);
+      for (i = 0; i < keys.length; i++) {
+        key = keys[i];
+        if (typeof src !== 'function' || (
+          key !== 'arguments' && key !== 'caller' && key !== 'callee'
+        )) {
+          if (key.charAt(0) !== '_' && !hasOwnProperty(result, key)) {
+            val = obj[key];
+            if (seen.indexOf(val) !== -1 && (
+              typeof val === 'object' || typeof val === 'function'
+            )) {
+              result[key] = '[Circular]';
+            } else {
+              result[key] = exports.flatten(val, seen);
+            }
+          }
+        }
+      }
+      src = Object.getPrototypeOf(src);
+    }
+
+    if (obj.constructor && obj.constructor.name) {
+      if (obj instanceof Error && obj.name === Error.name) {
+        result.name = obj.constructor.name;
+      } else if (!hasOwnProperty(result, 'constructor')) {
+        result.constructor = {name: obj.constructor.name};
+      }
+    }
+
+    return result;
+  };
+
 ////////////////////////////////////////////////////////////////////////////////
 /// @brief inspect
 ////////////////////////////////////////////////////////////////////////////////
@@ -1561,6 +1633,28 @@
     useColor = false;
   };
 
+// -----------------------------------------------------------------------------
+// --SECTION--                                          public utility functions
+// -----------------------------------------------------------------------------
+
+////////////////////////////////////////////////////////////////////////////////
+/// @brief exponentialBackoff
+////////////////////////////////////////////////////////////////////////////////
+
+  exports.exponentialBackOff = function (n, i) {
+    'use strict';
+    if (i === 0) {
+      return 0;
+    }
+    if (n === 0) {
+      return 0;
+    }
+    if (n === 1) {
+      return Math.random() < 0.5 ? 0 : i;
+    }
+    return Math.floor(Math.random() * (n + 1)) * i;
+  };
+
 }());
 
 // -----------------------------------------------------------------------------