add js-v-native benchmark

benchmark/js-versus-native-bench.js

@@ -0,0 +1,68 @@
+var pg = require(__dirname + '/../lib')
+var pgNative = require(__dirname + '/../lib/native');
+var bencher = require('bencher');
+var helper = require(__dirname + '/../test/test-helper')
+var conString = helper.connectionString()
+
+var round = function(num) {
+  return Math.round((num*1000))/1000
+}
+
+var doBenchmark = function() {
+  var bench = bencher({
+    name: 'js/native compare',
+    repeat: 1000,
+    actions: [{
+      name: 'javascript client - simple query',
+      run: function(next) {
+        var query = client.query('SELECT name, age FROM person WHERE age > 10');
+        query.on('end', function() {
+          next();
+        });
+      }
+    },{
+      name: 'native client - simple query',
+      run: function(next) {
+        var query = nativeClient.query('SELECT name FROM person WHERE age > $1', [10]);
+        query.on('end', function() {
+          next();
+        });
+      }
+    }, {
+      name: 'javascript client - parameterized query',
+      run: function(next) {
+        var query = client.query('SELECT name, age FROM person WHERE age > $1', [10]);
+        query.on('end', function() {
+          next();
+        });
+      }
+    },{
+      name: 'native client - parameterized query',
+      run: function(next) {
+        var query = nativeClient.query('SELECT name, age FROM person WHERE age > $1', [10]);
+        query.on('end', function() {
+          next();
+        });
+      }
+    }]
+  });
+  bench(function(result) {
+    console.log();
+    console.log("%s (%d repeats):", result.name, result.repeat)
+    result.actions.forEach(function(action) {
+      console.log("  %s: \n    average: %d ms\n    total: %d ms", action.name, round(action.meanTime), round(action.totalTime));
+    })
+    client.end();
+    nativeClient.end();
+  })
+}
+
+var client = new pg.Client(conString);
+var nativeClient = new pgNative.Client(conString);
+client.connect();
+client.on('connect', function() {
+  nativeClient.connect();
+  nativeClient.on('connect', function() {
+    doBenchmark();
+  });
+});