diff --git a/test/test-singlestep2.js b/test/test-singlestep2.js
new file mode 100644
index 0000000..2f6115b
--- /dev/null
+++ b/test/test-singlestep2.js
@@ -0,0 +1,41 @@
+// Remote single stepping using RPC (controller)
+// jamsh test-singlestep1.js -- 9001 
+// ...
+var N=2,verbose=0,runCount=0;
+var workers = [
+  'udp://localhost:9001',
+  'udp://localhost:9002',
+  'udp://localhost:9003',
+  'udp://localhost:9004'
+]
+
+workers=workers.slice(0,N);
+var t = time();
+function run1 () {
+  var ready = workers.length;
+  runCount++;
+  workers.forEach(function (url) {
+    if (verbose) log(url+' '+runCount);
+    else if ((runCount % 1000)==1) log(url+' '+runCount);
+    Rpc.trans(url,{
+      command:'sensor',
+      value : Math.random(),
+    })
+    Rpc.trans(url,{
+      command:'step'
+    },function (reply) {
+      if (verbose>1) log(url+inspect(reply))
+      else if ((runCount % 1000)==1) log(url+inspect(reply));
+      if (reply.status) ready--;
+      if (ready==0) {
+        if ((runCount % 1000)==1) {
+          var t1=time()-t;
+          log(t1);
+          t=time();
+        }
+        run1();
+      }
+    });
+  });
+};
+run1()