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  1. JDK
  2. JDK-7132739

Java 1.6.0_29 / 30 memory leak

    Details

    • Subcomponent:
    • CPU:
      x86
    • OS:
      linux

      Description

      FULL PRODUCT VERSION :
      java version "1.6.0_29"
      Java(TM) SE Runtime Environment (build 1.6.0_29-b11)
      Java HotSpot(TM) Server VM (build 20.4-b02, mixed mode)

      java version "1.6.0_30"
      Java(TM) SE Runtime Environment (build 1.6.0_30-b12)
      Java HotSpot(TM) Server VM (build 20.5-b03, mixed mode



      ADDITIONAL OS VERSION INFORMATION :
      Linux xxxx 2.6.5-7.244-bigsmp #1 SMP Mon Dec 12 18:32:25 UTC 2005 i686 i686 i386 GNU/Linux (Sles 9)
      Linux xxxx2.6.16.54-0.2.12-smp #1 SMP Fri Oct 24 02:16:38 UTC 2008 i686 i686 i386 GNU/Linux (Sles 10.3)
      Linux xxxx 2.6.24-19-server #1 SMP Wed Jun 18 15:18:00 UTC 2008 i686 GNU/Linux (Ubuntu 8 LTS)


      A DESCRIPTION OF THE PROBLEM :
      While running different applications on java 1.6.0_29 the operation system shows more and more memory usage until system freezes due to out of memory issues. The memory cannot be retrieved by stopping / restarting the JVM - only rebooting the system helps to gain back the memory. The memory usage of the running JVM is smaller than the memory "wasted" after a certain time of period. (an application using 500MB - Xmx) can kill a 16 GB system. JVMs are started with -server. The memory print of the JVM does not increase - top shows a constant memory usuage of the process but an increasing memory usuage.
      Applications executed e.g. Tomcat, Glassfish and standalone JSE application.
      All systems are working with 1.6.0_26 without any issues.

      REGRESSION. Last worked in version 6u29

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      Upgrade from 1.6.0_26 to 1.6.0_29 or _30

      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      application running
      top shows constant memory usuage of the java process - when stopping the java application the used memory must be freed and the total memory used should be the same as before
      ACTUAL -
      top shows an increasing total memory usuage - memory cannot be retrieved anymore wihtout reboot of system

      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      any java application can cause this issue - it seems to be important that a lot of GC occur - tested with Glassfish V2, Tomcat 7 and different standalone applications
      ---------- END SOURCE ----------

      CUSTOMER SUBMITTED WORKAROUND :
      downgrade to 1.6.0_26 (security issue as 1.6.0_29 is currently latest security baseline).

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            • Assignee:
              zgu Zhengyu Gu
              Reporter:
              webbuggrp Webbug Group
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              • Created:
                Updated:
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