diff --git a/benchmark/util/format.js b/benchmark/util/format.js
index 55ce76e1db5..00b59519dfd 100644
--- a/benchmark/util/format.js
+++ b/benchmark/util/format.js
@@ -10,7 +10,7 @@ const types = [
   'no-replace'
 ];
 const bench = common.createBenchmark(main, {
-  n: [1e6],
+  n: [2e6],
   type: types
 });
 
diff --git a/benchmark/util/inspect-array.js b/benchmark/util/inspect-array.js
index 44067b8b8f8..751e2c3c2de 100644
--- a/benchmark/util/inspect-array.js
+++ b/benchmark/util/inspect-array.js
@@ -4,23 +4,27 @@ const common = require('../common');
 const util = require('util');
 
 const bench = common.createBenchmark(main, {
-  n: [1e2],
+  n: [1e3],
   len: [1e5],
   type: [
     'denseArray',
     'sparseArray',
-    'mixedArray'
+    'mixedArray',
+    'denseArray_showHidden',
   ]
 });
 
-function main(conf) {
-  const { n, len, type } = conf;
+function main({ n, len, type }) {
   var arr = Array(len);
-  var i;
+  var i, opts;
 
   switch (type) {
+    case 'denseArray_showHidden':
+      opts = { showHidden: true };
+      arr = arr.fill('denseArray');
+      break;
     case 'denseArray':
-      arr = arr.fill(0);
+      arr = arr.fill('denseArray');
       break;
     case 'sparseArray':
       break;
@@ -33,7 +37,7 @@ function main(conf) {
   }
   bench.start();
   for (i = 0; i < n; i++) {
-    util.inspect(arr);
+    util.inspect(arr, opts);
   }
   bench.end(n);
 }
diff --git a/benchmark/util/inspect-proxy.js b/benchmark/util/inspect-proxy.js
index c220462ce7f..5427df9952c 100644
--- a/benchmark/util/inspect-proxy.js
+++ b/benchmark/util/inspect-proxy.js
@@ -3,42 +3,13 @@
 const util = require('util');
 const common = require('../common.js');
 
-const bench = common.createBenchmark(main, {
-  v: [1, 2],
-  n: [1e6]
-});
+const bench = common.createBenchmark(main, { n: [1e6] });
 
-function twoDifferentProxies(n) {
-  // This one should be slower because we're looking up multiple proxies.
+function main({ n }) {
   const proxyA = new Proxy({}, { get: () => {} });
-  const proxyB = new Proxy({}, { get: () => {} });
+  const proxyB = new Proxy(() => {}, {});
   bench.start();
   for (var i = 0; i < n; i += 1)
     util.inspect({ a: proxyA, b: proxyB }, { showProxy: true });
   bench.end(n);
 }
-
-function oneProxy(n) {
-  // This one should be a bit faster because of the internal caching.
-  const proxy = new Proxy({}, { get: () => {} });
-  bench.start();
-  for (var i = 0; i < n; i += 1)
-    util.inspect({ a: proxy, b: proxy }, { showProxy: true });
-  bench.end(n);
-}
-
-function main(conf) {
-  const n = conf.n | 0;
-  const v = conf.v | 0;
-
-  switch (v) {
-    case 1:
-      oneProxy(n);
-      break;
-    case 2:
-      twoDifferentProxies(n);
-      break;
-    default:
-      throw new Error('Should not get to here');
-  }
-}
diff --git a/benchmark/util/inspect.js b/benchmark/util/inspect.js
index 115a3b64a73..1cf889d7ee3 100644
--- a/benchmark/util/inspect.js
+++ b/benchmark/util/inspect.js
@@ -3,14 +3,96 @@ var util = require('util');
 
 var common = require('../common.js');
 
-var bench = common.createBenchmark(main, { n: [5e6] });
-
-function main(conf) {
-  var n = conf.n | 0;
+const opts = {
+  showHidden: { showHidden: true },
+  colors: { colors: true },
+  none: undefined
+};
+var bench = common.createBenchmark(main, {
+  n: [2e6],
+  method: [
+    'Object',
+    'Object_empty',
+    'Object_deep_ln',
+    'String',
+    'String_complex',
+    'String_boxed',
+    'Date',
+    'Set',
+    'Error',
+    'Array',
+    'TypedArray',
+    'TypedArray_extra'
+  ],
+  option: Object.keys(opts)
+});
 
+function benchmark(n, obj, options) {
   bench.start();
   for (var i = 0; i < n; i += 1) {
-    util.inspect({ a: 'a', b: 'b', c: 'c', d: 'd' });
+    util.inspect(obj, options);
   }
   bench.end(n);
 }
+
+function main({ method, n, option }) {
+  var obj;
+  const options = opts[option];
+  switch (method) {
+    case 'Object':
+      benchmark(n, { a: 'a', b: 'b', c: 'c', d: 'd' }, options);
+      break;
+    case 'Object_empty':
+      benchmark(n, {}, options);
+      break;
+    case 'Object_deep_ln':
+      if (options)
+        options.depth = Infinity;
+      obj = { first:
+              { second:
+                { third:
+                  { a: 'first',
+                    b: 'second',
+                    c: 'third',
+                    d: 'fourth',
+                    e: 'fifth',
+                    f: 'sixth',
+                    g: 'seventh' } } } };
+      benchmark(n, obj, options || { depth: Infinity });
+      break;
+    case 'String':
+      benchmark(n, 'Simple string', options);
+      break;
+    case 'String_complex':
+      benchmark(n, 'This string\nhas to be\tescaped!', options);
+      break;
+    case 'String_boxed':
+      benchmark(n, new String('string'), options);
+      break;
+    case 'Date':
+      benchmark(n, new Date(), options);
+      break;
+    case 'Set':
+      obj = new Set([5, 3]);
+      benchmark(n, obj, options);
+      break;
+    case 'Error':
+      benchmark(n, new Error('error'), options);
+      break;
+    case 'Array':
+      benchmark(n, Array(20).fill().map((_, i) => i), options);
+      break;
+    case 'TypedArray':
+      obj = new Uint8Array(Array(50).fill().map((_, i) => i));
+      benchmark(n, obj, options);
+      break;
+    case 'TypedArray_extra':
+      obj = new Uint8Array(Array(50).fill().map((_, i) => i));
+      obj.foo = 'bar';
+      obj[Symbol('baz')] = 5;
+      benchmark(n, obj, options);
+      break;
+    default:
+      throw new Error(`Unsupported method "${method}"`);
+  }
+}
diff --git a/benchmark/util/normalize-encoding.js b/benchmark/util/normalize-encoding.js
index 8c4d0347810..2cdfd544421 100644
--- a/benchmark/util/normalize-encoding.js
+++ b/benchmark/util/normalize-encoding.js
@@ -19,7 +19,7 @@ const inputs = [
 
 const bench = common.createBenchmark(main, {
   input: inputs.concat(Object.keys(groupedInputs)),
-  n: [1e5]
+  n: [1e7]
 }, {
   flags: '--expose-internals'
 });