RMI connections performance

I am having problems looking up a RMI object. The Weblogic console reports
the following:
Wed Apr 12 23:32:11 EDT 2000:<W> <ListenThread> Connection rejected:
Login timed out after 5000 msec. The socket came from
host=10.0.3.13,port=1140,localport=7001] See property
weblogic.login.readTimeoutMillis.
Wed Apr 12 23:32:22 EDT 2000:<W> <ListenThread> Connection rejected:
Login timed out after 5000 msec. The socket came from
host=10.0.3.13,port=1141,localport=7001] See property
weblogic.login.readTimeoutMillis.
Wed Apr 12 23:32:24 EDT 2000:<W> <ListenThread> Connection rejected:
Login timed out after 5000 msec. The socket came from
host=10.0.3.13,port=1143,localport=7001] See property
weblogic.login.readTimeoutMillis.
I get about 3 time out errors and it takes almost a full minute before the
bind happens. The chunk of code that does the bind is included below:
String rmiHostAndPort = "t3://localhost:7001/foo"
System.out.println("Binding to " + rmiHostAndPort);
IFoo foo =
(IFoo) Naming.lookup(rmiHostAndPort);
System.out.println("Bound to " + rmiHostAndPort);
The time between "binding to" and "bound to" is slow. Sometimes, it does
not even return at all. This happens when the applet is restarted for some
obscure reason.
Any help would be appreciated.
Erik Currin
[email protected]

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     ... 7 moreEdited by: pantony on Nov 28, 2008 3:26 AM
Edited by: pantony on Nov 28, 2008 3:27 AM

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Andy Piper <[email protected]> wrote:
"Pete Harris" <[email protected]> writes:
I'm experiencing problems with the performance of RMI calls from withinsession
beans to external RMI services. I have a system running 4 RMI servicesin separate
JVMs to weblogic 6.1 instance on Solaris 2.6 on SPARC boxes with 1+Gb of RAM.
The system was developed on NT and deployed to UNIX. A typical requestis serviced
in 70-90 ms on the NT development box (Desktop 512Mb RAM) but whendeployed to
the UNIX box takes anywhere between 500-4000 ms. Performance metricsin the code
indicate that 'crunch' times are similar but remote RMI calls are ordersof magnitude
greater.
Has anybody had similar problems? I have checked the tuning guideswrt TCP/IP
configurations but would not expect such a large difference using thedefault
Solaris configuration. Memory and CPU utilisation on the SPARC arelow as are
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worse a reverse lookup. You might want to try using IP addresses in
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at weblogic.servlet.internal.ServletOutputStreamImpl.flush(ServletOutput
StreamImpl.java:121)
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at weblogic.servlet.ClasspathServlet.sendResource(ClasspathServlet.java:
114)
at weblogic.servlet.ClasspathServlet.doGet(ClasspathServlet.java:87)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
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pl.java:105)
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textImpl.java:686)
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a:361)
at weblogic.socket.MuxableSocketHTTP.execute(MuxableSocketHTTP.java:261)
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java.lang.NoClassDefFoundError
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at weblogic/rmi/extensions/BasicRequest.<init> (BasicRequest.java:18)
at weblogic/rmi/extensions/AbstractRemoteObjectReference.getRequest (AbstractRemoteObjectReference.java:71)
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at weblogic/jndi/WLInitialContextFactoryDelegate.getInitialContext (WLInitialContextFactoryDelegate.java:205)
at weblogic/jndi/Environment.getContext (Environment.java:122)
at weblogic/jndi/Environment.getInitialContext (Environment.java:105)
at weblogic/rmi/Naming.getContext (Naming.java:225)
at weblogic/rmi/Naming.lookup (Naming.java:67)
at AppletTest.init (AppletTest.java:30)
at com/ms/applet/AppletPanel.securedCall0 (AppletPanel.java)
at com/ms/applet/AppletPanel.securedCall (AppletPanel.java)
at com/ms/applet/AppletPanel.processSentEvent (AppletPanel.java)
at com/ms/applet/AppletPanel.processSentEvent (AppletPanel.java)
at com/ms/applet/AppletPanel.run (AppletPanel.java)
at java/lang/Thread.run (Thread.java
Can someone help solve this problem.
Thansk in advance,
Nirmal R.

The point where the failure occurs in in the initialization of the transaction framework, so I would guess that you do not have the plug-in for the applet.
Nirmal R wrote:
Weblogic 5.1 is running on my localhost and a remote object successfully registered on the weblogic. There is an applet trying to establish a connection and after the client is registered in the client list I get the following exception
Thu Jan 25 11:29:06 PST 2001:<E> <ServletContext-General> Servlet failed with Ex
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at weblogic.servlet.internal.ChunkUtils.writeChunks(ChunkUtils.java:88)
at weblogic.servlet.internal.ServletOutputStreamImpl.flush(ServletOutput
StreamImpl.java:121)
at weblogic.servlet.internal.ServletOutputStreamImpl.writeStream(Servlet
OutputStreamImpl.java:444)
at weblogic.servlet.ClasspathServlet.sendResource(ClasspathServlet.java:
114)
at weblogic.servlet.ClasspathServlet.doGet(ClasspathServlet.java:87)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:865)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:105)
at weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletCon
textImpl.java:742)
at weblogic.servlet.internal.ServletContextImpl.invokeServlet(ServletCon
textImpl.java:686)
at weblogic.servlet.internal.ServletContextManager.invokeServlet(Servlet
ContextManager.java:247)
at weblogic.socket.MuxableSocketHTTP.invokeServlet(MuxableSocketHTTP.jav
a:361)
at weblogic.socket.MuxableSocketHTTP.execute(MuxableSocketHTTP.java:261)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
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java.lang.NoClassDefFoundError
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at weblogic/jndi/WLInitialContextFactoryDelegate.newRemoteContext (WLInitialContextFactoryDelegate.java:316)
at weblogic/jndi/WLInitialContextFactoryDelegate.newContext (WLInitialContextFactoryDelegate.java:242)
at weblogic/jndi/WLInitialContextFactoryDelegate.getInitialContext (WLInitialContextFactoryDelegate.java:205)
at weblogic/jndi/Environment.getContext (Environment.java:122)
at weblogic/jndi/Environment.getInitialContext (Environment.java:105)
at weblogic/rmi/Naming.getContext (Naming.java:225)
at weblogic/rmi/Naming.lookup (Naming.java:67)
at AppletTest.init (AppletTest.java:30)
at com/ms/applet/AppletPanel.securedCall0 (AppletPanel.java)
at com/ms/applet/AppletPanel.securedCall (AppletPanel.java)
at com/ms/applet/AppletPanel.processSentEvent (AppletPanel.java)
at com/ms/applet/AppletPanel.processSentEvent (AppletPanel.java)
at com/ms/applet/AppletPanel.run (AppletPanel.java)
at java/lang/Thread.run (Thread.java
Can someone help solve this problem.
Thansk in advance,
Nirmal R.

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