Hi Anyone able to see those images? Maybe you can log a JIRA and attach the images there. Not sure if this mailing list accepts images and embedded files in mails etc.
On Thu, Jul 24, 2014 at 3:42 PM, Raul Kripalani <r...@evosent.com> wrote: > Team, > > We just had an OOM incident in our dev environments after upgrading from > Camel 2.10.3 to 2.13.1. Heap settings have remained untouched. > > A heap dump showed millions of DefaultMessageHistory instances retained > (see screenshot), along with their corresponding Date and StopWatch > instances. Obviously our first solution will be to disable message > history in all contexts. > > Digging deeper, I'm utterly confused because I don't seem to find the GC > roots that are keeping these objects alive. > > OQL query for VisualVM: > > select x from org.apache.camel.impl.DefaultMessageHistory x where > count(referrers(x)) > 0 > > returns many objects, which is good. > > However, they are referenced by some Object[] which in turn has no > referrers (!), see screenshot. > > Using the "Find nearest GC root" feature yields no results either. > > This mysterious Object[] seems to be filled from position 4072 onwards > (see screenshot), it has 9k+ items... Perhaps some kind of Queue? There are > many more Object[] arrays storing DefaultMessageHistory instances too. > > What's your take? > > Have you come across such an issue before? > > Someone who is outright familiar with the internal workings of the Message > History functionality has any clue what's the purpose of this array? > > Thanks, > Raúl. > > > [image: Inline image 3] > > [image: Inline image 1] > > [image: Inline image 2] > > *Raúl Kripalani* > Apache Camel PMC Member & Committer | Enterprise Architect, Open Source > Integration specialist > http://about.me/raulkripalani | http://www.linkedin.com/in/raulkripalani > http://blog.raulkr.net | twitter: @raulvk > -- Claus Ibsen ----------------- Red Hat, Inc. Email: cib...@redhat.com Twitter: davsclaus Blog: http://davsclaus.com Author of Camel in Action: http://www.manning.com/ibsen hawtio: http://hawt.io/ fabric8: http://fabric8.io/
