0 Replies Latest reply on Dec 22, 2006 6:20 PM by Andrew Wang

    the speed of jndi lookup is fine in one network, but too slo

    Andrew Wang Newbie

      Installed JBoss 4.0.4 on two servers with same configuration. Deployed an ejb3 application on both of them. On the client side, the following code is used to do the lookup:

      Hashtable env = new Hashtable();
      env.put(Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory");
      env.put(Context.PROVIDER_URL, p.getProperty("URL", "server:1099"));
      Context c = new InitialContext(env);
      System.out.println("Lookup : " + System.currentTimeMillis());
      myservice = (myservice) c.lookup(" myservicebean/remote");
      System.out.println(System.currentTimeMillis());

      The problem is that on one network, it takes about 500ms, and on the other network, it takes 15s. These two network are similar network (windows servers with a bunch of windows client. The slow one doesn't have internet connection though.). If I run the application on server machine only (JBOSS & Client application on same machine instead of two machines. i.e. install client on the server and change the above url to something like "localhost:1099)). The speed is fine.

      The network itself seems not a problem. I used ping to test network speed on both network. It seems the slow one even has a faster roundtrip time.

      So can anyone give me some hints on how to debug this kind of problem?

      Thanks.