diff --git a/js/x11/examples/smoketest/benchmarks/atom_benchmark_buffered.js b/js/x11/examples/smoketest/benchmarks/atom_benchmark_buffered.js
new file mode 100644
index 0000000..0a9163d
--- /dev/null
+++ b/js/x11/examples/smoketest/benchmarks/atom_benchmark_buffered.js
@@ -0,0 +1,51 @@
+// WinServ2008R2 64bit, Intel(R) Core(TM) i7 CPU 870 @2.93GHz, Xming 6.9.0.31
+// 0.4.3/cygwin 32bit: 12000 +/-1000  InternAtom/sec
+// 0.5.1/win32       : 12000 +/-1000 
+
+// Ubuntu 11.04 32bit, Intel(R) Core(TM)2 Duo CPU T7250 @2.00GHz, XOrg 1:7.6+4ubuntu3.1
+// 0.4.9pre: 23300 +/-200 
+
+
+var x11 = require('../../../lib');
+
+var xclient = x11.createClient();
+var counter = 0;
+var t = +new Date();
+var t0 = t;
+var num = 100000;
+xclient.on('connect', function(err, display) {
+    console.log(display);
+    process.exit(0);
+    var X = this;
+    for (var i=0; i < num; ++i)
+    { 
+       var hello = 'Hello, node.js ' + i;
+       X.InternAtom(false, hello, function(atomId) {
+           if (counter == 0)
+           {
+               var t1 = +new Date();
+               console.log('first reply after sending %d atoms in %d ms', num, t1-t);
+               t = t1;
+           }
+           //console.log('atom %d saved on server', atomId);
+           
+           if ((counter % 10000) == 0)
+           {
+               var t1 = +new Date();
+               console.log('received 10000 (up to %d) atom ids in %d ms', counter, t1 - t);
+               t = t1;
+           }
+           
+           counter++;
+           if (counter == (num-1))
+           {
+              var t1 = +new Date();
+              var delta = t1 - t0;
+              console.log(delta);
+              console.log('reqs/msec: ' + num/delta);
+              console.log('msec per req: ' + delta/num);
+              process.exit(0); // TODO: X.end() ?
+           }
+       });
+    }
+});