I agree with Tom. Had experienced this earlier due to a laggard listener back before stable carbon cut. Eventually , listener had got fixed (not in connection with this observation but I had just picked up the build spaced well after the original build) and I had not been able to repro the same.
Listener mailboxes are unbounded so that notifs do not get lost due to discards to deadletters Regards Muthu From: controller-dev-boun...@lists.opendaylight.org [mailto:controller-dev-boun...@lists.opendaylight.org] On Behalf Of Tom Pantelis Sent: Monday, May 29, 2017 6:28 PM To: Michael Vorburger Cc: controller-dev; mdsal-...@lists.opendaylight.org Subject: Re: [controller-dev] [mdsal-dev] Bug 7370 OOM due to suspected memory leak in akka.dispatch.Dispatcher found by hprof It looks like the Dispatcher was for data change notifications. I suspect a listener was hung or responding slowly so the actor's mailbox filled up with change notifications. I would suggest getting a thread dump next time. On Mon, May 29, 2017 at 7:52 AM, Michael Vorburger <vorbur...@redhat.com<mailto:vorbur...@redhat.com>> wrote: Hi guys, I just ran MAT([1]) over an HPROF heap dump on OOM in Bug 7370, and it (MAT) raises a "leak suspect" in akka.dispatch.Dispatcher - see the [3] java_pid19570_Leak_Suspects.zip just attached to Bug 7370 ... questions: Is this perhaps something you jump at with an "ah that, we know about it and already fixed that in ..." ? If not, how do we go about better understanding the root cause of this, and be able to eventually fix this? My underlying assumption here is that isn't "normal" and not just "by design" - if it is, I'd love some education... like I'm hoping that the conclusion here isn't simply that MD SAL's data store is a dumb in-memory data base which basically just takes a huge amount of GBs to keep (all) YANG model instances on the heap - or is it? Tx, M. [1] https://www.eclipse.org/mat/ [2] https://bugs.opendaylight.org/show_bug.cgi?id=7370 [3] https://bugs.opendaylight.org/attachment.cgi?id=1816 -- Michael Vorburger, Red Hat vorbur...@redhat.com<mailto:vorbur...@redhat.com> | IRC: vorburger @freenode | ~ = http://vorburger.ch<http://vorburger.ch/> _______________________________________________ mdsal-dev mailing list mdsal-...@lists.opendaylight.org<mailto:mdsal-...@lists.opendaylight.org> https://lists.opendaylight.org/mailman/listinfo/mdsal-dev
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