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From Bram Pouwelse <b...@pouwelse.com>
Subject Re: Memory usage
Date Wed, 17 Oct 2012 15:01:13 GMT
I've used eclipse memory analyzer a few times before and I've used it to
analyze this problem. I've found a small leak which takes about 100 MB of a
total of the 400 MB heap space used, but the java process is growing from 1
GB to 4GB in the same period of time.

Regards,
Bram


2012/10/17 Achim Nierbeck <bcanhome@googlemail.com>

> Did you try to analyze your dump with the eclipse memory analyzer,
> it's pretty slick tool for this
> and it'll show you possible memory leaks quite fast ...
>
> regards, Achim
>
> 2012/10/17 Bram Pouwelse <bram@pouwelse.com>:
> > Hi JB,
> >
> > Thanks for the quick response!
> >
> > Sorry, forgot to mention I have a dump created using jmap (jmap
> > -dump:format=b,file=wolkje.hprof 992). The resulting file is 975M, when
> > analyzing this dump with Memory Analyzer
> >
> > Overview:
> > Details
> > Size: 377.9 MB Classes: 11.1k Objects: 10.6m
> >
> > Dominator tree:
> > Class Name
> > | Shallow Heap | Retained Heap | Percentage
> >
> ------------------------------------------------------------------------------------------------------------------------
> > org.apache.felix.framework.ModuleImpl$ModuleClassLoaderJava5 @ 0xc0f793e8
> > |           80 |   199,482,536 |     50.34%
> > nl.ditp.fabuland.chart.googleviz.core.state.ChartSessionManager @
> > 0xc0f55b58|           16 |   104,510,648 |     26.37%
> > nl.ditp.ricoh.dataprovider.internal.RicohDataSourceServiceImpl @
> 0xc1c648f0
> > |           24 |    22,419,768 |      5.66%
> >
> ------------------------------------------------------------------------------------------------------------------------
> >
> >
> > The consumed heap seems to be the same as in the jvm metrics displayed in
> > the monitoring software.
> >
> > Regards,
> > Bram
> >
> >
> > 2012/10/17 Jean-Baptiste Onofré <jb@nanthrax.net>
> >>
> >> Hi Bram,
> >>
> >> could you take a dump (dev:create-dump for instance) ?
> >>
> >> Regards
> >> JB
> >>
> >>
> >> On 10/17/2012 04:29 PM, Bram Pouwelse wrote:
> >>>
> >>> Hi,
> >>>
> >>> I'm developing an application that using Pax Wicket running on Apache
> >>> Karaf. I'm having a memory usage issue that I don't really understand,
> >>> I've attached screenshot from server monitoring.
> >>>
> >>> At the moment of the screenshot the server memory is almost completely
> >>> consumed by the java process (the coloured graph displays the server
> >>> memory usage) and the growth in the memory usage is almost linear. But
> >>> when I look at the JVM metrics the memory consumption doesn't grow in
> >>> the same linear way.
> >>>
> >>> Is there an explanation for the gap between the memory usage in the JVM
> >>> metrics and the memory used by the java process?
> >>>
> >>> I'm using Karaf 2.2.9 and java 1.6.0_35
> >>>
> >>> Thanks,
> >>>
> >>> Bram Pouwelse
> >>>
> >>>
> >>
> >> --
> >> Jean-Baptiste Onofré
> >> jbonofre@apache.org
> >> http://blog.nanthrax.net
> >> Talend - http://www.talend.com
> >
> >
>
>
>
> --
>
> Apache Karaf <http://karaf.apache.org/> Committer & PMC
> OPS4J Pax Web <http://wiki.ops4j.org/display/paxweb/Pax+Web/>
> Committer & Project Lead
> OPS4J Pax for Vaadin
> <http://team.ops4j.org/wiki/display/PAXVAADIN/Home> Commiter & Project
> Lead
> blog <http://notizblog.nierbeck.de/>
>

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