RMI server causes the system to slow down and crash with socketException

Question

Hi,
My RMI server application is a simple rmi server which invokes a JNI method once when I invoke through my client application. Server is left as it is after invoking the JNI method. After around 12 hours, server stops running with the following exception
ZoneInfo: C:\Program Files\Java\jre1.6.0\lib\zi\ZoneInfoMappi
ngs (Insufficient system resources exist to complete the requested service)
ZoneInfo: C:\Program Files\Java\jre1.6.0\lib\zi\ZoneInfoMappings (Insufficient s
ystem resources exist to complete the requested service)
Dec 29, 2008 10:09:34 AM sun.rmi.transport.tcp.TCPTransport$AcceptLoop executeAc
ceptLoop
WARNING: RMI TCP Accept-0: accept loop for ServerSocket[addr=0.0.0.0/0.0.0.0,por
t=0,localport=2161] throws
java.net.SocketException: socket closed
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.PlainSocketImpl.accept(Unknown Source)
at java.net.ServerSocket.implAccept(Unknown Source)
at java.net.ServerSocket.accept(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.executeAcceptLoop(Unkno
wn Source)
at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Dec 29, 2008 10:10:35 AM sun.rmi.transport.tcp.TCPTransport$AcceptLoop executeAc
ceptLoop
WARNING: RMI TCP Accept-0: accept loop for ServerSocket[addr=0.0.0.0/0.0.0.0,por
t=0,localport=2161] throws
java.net.SocketException: socket closed
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.PlainSocketImpl.accept(Unknown Source)
at java.net.ServerSocket.implAccept(Unknown Source)
at java.net.ServerSocket.accept(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.executeAcceptLoop(Unkno
wn Source)
at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Dec 29, 2008 10:12:36 AM sun.rmi.transport.tcp.TCPTransport$AcceptLoop executeAc
ceptLoop
WARNING: RMI TCP Accept-0: accept loop for ServerSocket[addr=0.0.0.0/0.0.0.0,por
t=0,localport=2161] throws
java.net.SocketException: socket closed
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.PlainSocketImpl.accept(Unknown Source)
at java.net.ServerSocket.implAccept(Unknown Source)
at java.net.ServerSocket.accept(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.executeAcceptLoop(Unkno
wn Source)
at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Dec 29, 2008 10:15:37 AM sun.rmi.transport.tcp.TCPTransport$AcceptLoop executeAc
ceptLoop
WARNING: RMI TCP Accept-0: accept loop for ServerSocket[addr=0.0.0.0/0.0.0.0,por
t=0,localport=2161] throws
java.net.SocketException: socket closed
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.PlainSocketImpl.accept(Unknown Source)
at java.net.ServerSocket.implAccept(Unknown Source)
at java.net.ServerSocket.accept(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.executeAcceptLoop(Unkno
wn Source)
at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Dec 29, 2008 10:20:40 AM sun.rmi.transport.tcp.TCPTransport$AcceptLoop executeAc
ceptLoop
WARNING: RMI TCP Accept-0: accept loop for ServerSocket[addr=0.0.0.0/0.0.0.0,por
t=0,localport=2161] throws
java.net.SocketException: socket closed
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.PlainSocketImpl.accept(Unknown Source)
at java.net.ServerSocket.implAccept(Unknown Source)
at java.net.ServerSocket.accept(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.executeAcceptLoop(Unkno
wn Source)
at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
# An unexpected error has been detected by Java Runtime Environment:
# Internal Error (4D555445583F57494E13120E4350500075), pid=1352, tid=1828
# Java VM: Java HotSpot(TM) Client VM (1.6.0-b105 mixed mode, sharing)
# Can not save log file, dump to screen..
# An unexpected error has been detected by Java Runtime Environment:
# Internal Error (4D555445583F57494E13120E4350500075), pid=1352, tid=1828
# Java VM: Java HotSpot(TM) Client VM (1.6.0-b105 mixed mode, sharing)
# If you would like to submit a bug report, please visit:
# http://java.sun.com/webapps/bugreport/crash.jsp
Does anyone has any idea?
Regards
Nidhin

Answer 1

Your RMI server invokes a JNI method as you mentioned. It seems your system resource is become very low as from the exception from "ZoneInfoMappi"
(Insufficient system resources exist to complete the requested service...I would suggest the following
1- remove the JNI method invocation and replace by a simple method which does nothing special ( counting etc..)
2- Run the RMI sever and stress test it again
If you see the RMI server is working well after 12 hours, then your native method is leaking i.e consuming the system resources ( RAM etc..)
You should profile the running RMI server using jconsole
Regards,
Alan Mehio