openjdk team mailing list archive

[Marc Deslauriers <marc.deslauriers@xxxxxxxxxxxxx>]

Thanks for taking the time to report this bug and helping to make Ubuntu
better. We appreciate the difficulties you are facing, but this appears
to be a "regular" (non-security) bug.  I have unmarked it as a security
issue since this bug does not show evidence of allowing attackers to
cross privilege boundaries nor directly cause loss of data/privacy.
Please feel free to report any other bugs you may find.

** Visibility changed to: Public

** This bug is no longer flagged as a security vulnerability

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https://bugs.launchpad.net/bugs/744149

Title:
  JVM crashes after some time of running the system. Using JbossDrools ,
  ehcache

Status in “openjdk-6” package in Ubuntu:
  New

Bug description:
  I am using Jboss Drools for doing some Event processing, It has good
  amount of data. Plus our application requires to store the data for
  some time hence we are using ehcache's, LRU model.

  Other tools :
  1) JBoss Drool
  2) ActiveMq
  3) ehcache

  JVM opts :-d64 -server -Xms2048m -Xmx2048m -XX:MaxPermSize=512m
  -XX:+PrintGCDetails -XX:+PrintGCTimeStamps -Xloggc:gclogs.txt
  -Dcom.sun.management.jmxremote -Djava.rmi.server.hostname=192.168.5.33
  -Dcom.sun.management.jmxremote.port=14000
  -Dcom.sun.management.jmxremote.ssl=false
  -Dcom.sun.management.jmxremote.authenticate=false

  I tried running the system by sending 20 events per second. This event
  was sent to ActiveMQ. Which is another server. (JVM) from ActiveMQ
  messages are sent to our main server where processing happens.
  Processing involves heavy usage of JBoss Drools, and each of such
  Events are stored in ehcache. We are using LRU model of ehcache.

  Have set memory to 2GB and have monitored memory through Jconsole and even gc logs. But memory boundaries were never breached. 
  I changed the number of events to be stored by ehcache from 1000 to 500 to 400 to 300. But as the memory boundaries were never breached, this couldnt be a reason. 

  Even GC limit reached message was never found, which happens if the
  crash was due to memory constraint.

  Please look into the issue and help.

  Thanks in advance.