diff --git a/benchmark/large-datatset-bench.js b/benchmark/large-datatset-bench.js
index 081bc082..a5e0346a 100644
--- a/benchmark/large-datatset-bench.js
+++ b/benchmark/large-datatset-bench.js
@@ -7,7 +7,7 @@ var round = function(num) {
   return Math.round((num*1000))/1000
 }
 
-var doBenchmark = function() {
+var doBenchmark = function(cb) {
   var bench = bencher({
     name: 'select large sets',
     repeat: 10,
@@ -15,6 +15,10 @@ var doBenchmark = function() {
       name: 'selecting string',
       run: function(next) {
         var query = client.query('SELECT name FROM items');
+        query.on('error', function(er) {
+          console.log(er);throw er;
+        });
+
         query.on('end', function() {
           next();
         });
@@ -23,6 +27,10 @@ var doBenchmark = function() {
       name: 'selecting integer',
       run: function(next) {
         var query = client.query('SELECT count FROM items');
+        query.on('error', function(er) {
+          console.log(er);throw er;
+        });
+
         query.on('end', function() {
           next();
         })
@@ -31,6 +39,10 @@ var doBenchmark = function() {
       name: 'selecting date',
       run: function(next) {
         var query = client.query('SELECT created FROM items');
+        query.on('error', function(er) {
+          console.log(er);throw er;
+        });
+
         query.on('end', function() {
           next();
         })
@@ -44,7 +56,7 @@ var doBenchmark = function() {
         })
       }
     }, {
-      name: 'loading all rows into memory', 
+      name: 'loading all rows into memory',
       run: function(next) {
         var query = client.query('SELECT * FROM items', next);
       }
@@ -57,6 +69,7 @@ var doBenchmark = function() {
       console.log("  %s: \n    average: %d ms\n    total: %d ms", action.name, round(action.meanTime), round(action.totalTime));
     })
     client.end();
+    cb();
   })
 }
 
@@ -78,6 +91,35 @@ for(var i = 0; i < count; i++) {
 }
 
 client.once('drain', function() {
-  console.log('done with insert. executing benchmark.');
-  doBenchmark();
+  console.log('done with insert. executing pure-javascript benchmark.');
+  doBenchmark(function() {
+    var oldclient = client;
+    client = new pg.native.Client(conString);
+    client.on('error', function(err) {
+      console.log(err);
+      throw err;
+    });
+
+    client.connect();
+    client.connect();
+    console.log();
+    console.log("creating temp table");
+    client.query("CREATE TEMP TABLE items(name VARCHAR(10), created TIMESTAMPTZ, count INTEGER)");
+    var count = 10000;
+    console.log("inserting %d rows", count);
+    for(var i = 0; i < count; i++) {
+      var query = {
+        name: 'insert',
+        text: "INSERT INTO items(name, created, count) VALUES($1, $2, $3)",
+        values: ["item"+i, new Date(2010, 01, 01, i, 0, 0), i]
+      };
+      client.query(query);
+    }
+    client.once('drain', function() {
+      console.log("executing native benchmark");
+      doBenchmark(function() {
+        console.log("all done");
+      })
+    })
+  });
 });