[jboss-jira] [JBoss JIRA] Commented: (JBAS-7011) Jboss high memory leak in SMP kernel 2.6.9-78.0.13.ELsmp but not in Non-SMP kernel 2.6.9-78.0.13.EL

[Michal Borowiecki (JIRA)]

    [ https://jira.jboss.org/jira/browse/JBAS-7011?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12510173#action_12510173 ] 

Michal Borowiecki commented on JBAS-7011:
-----------------------------------------

Hi,

We are also encountering severe memory leaks in our JBoss deployments on dual and quad core HP servers running 2.6.x SMP versions of Linux.
As our applications grow in size we need to restart JBoss more and more often to regain heap memory.
We have separate instances running only webapps and seperate ones running only ejbs and both are experiencing this problem.
Unfortunately we can't test on a non-SMP linux currently. I will let you know if we do.

> Jboss high memory leak in SMP kernel 2.6.9-78.0.13.ELsmp but not in Non-SMP kernel 2.6.9-78.0.13.EL
> ---------------------------------------------------------------------------------------------------
>
>                 Key: JBAS-7011
>                 URL: https://jira.jboss.org/jira/browse/JBAS-7011
>             Project: JBoss Application Server
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions: JBossAS-4.0.5.GA
>         Environment: HP DL380 G4 with 4 GB RAM and Duel Core CPU with 3.60 GHz, Linux AS 4 64-bit 2.6.9-78.0.13.ELsmp.
>            Reporter: Mathiyalagan Gopal
>            Priority: Critical
>   Original Estimate: 3 days
>  Remaining Estimate: 3 days
>
> Hello All,
> We are the GE AssetIntelligence running our J2EE based web application in the famous combination of apache + Jboss servers. Our site was running now almost 2 yrs...after deep JVM memory investigation I found there is huge memory leak in the SMP kernel Linux Jboss systems. When I switched the same machine to run on Non-SMP kernel (i,e EL rather then ELsmp) the memory management handeled very well.
> When we run our Jboss application server in SMP kernel we have to bounce our jboss instance minimum 2 times a day to reset the JVM Heap, but with non-SMP kernel its running fine and we dont have to do anything. Is anybody out here facing the same issue?
> Note : For JVM heap diagnosis we used JProbe as well as Java inbuilt "jmap" utility to generate the report every hour for heap size and live objects.
> I am running following versions of servers,
> Hardware :HP DL 380 G4 ( 4 GB RAM , 2 Duel Core CPU 3.60 GHz)
> Server 1 : Apache-2.2.11
> Server 2,3 & 4 : Jboss-4.0.5.GA 
> Using apache-2.2.x (mod_loadbalancer) module to connect back end servers.
> My JAVA_OPTS vales are
>  JAVA_OPTS="-Xms3096m -Xmx3096m -XX:MaxPermSize=256m -Djavax.xml.ws.spi.Provider=org.apache.cxf.jaxws.spi.ProviderImpl -Dorg.apache.cxf.bus.factory=org.apache.cxf.bus.CXFBusFactory -XX:+PrintGCTimeStamps -XX:+PrintGCDetails -Dsun.rmi.dgc.client.gcInterval=3600000 -Dsun.rmi.dgc.server.gcInterval=3600000 -Djboss.partition.name=vip-production-lpap03XXXX -Dtsf.environment=PRD -Dnodename=XXXXXXXX"
> Any help will be appreciated!!

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