Peter, There is very little information in there. Basically a whole lot of "DGC Lease Checker" threads all sleeping in Thread.run().
The stacks below are from a capture in yourkit that I had on hand from when I was investigating this problem. The workload had been removed from the service but the leases had not yet expired. Thanks, Bryan Stacks at 09:16:02 AM (uptime 1:48:56) (JSK) ConnectionManager.Reaper [SLEEPING] CPU time: 0:00 java.lang.Thread.sleep(long) net.jini.jeri.connection.ConnectionManager$Reaper.run() java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Threa (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:hread.run() com.bigdata.journal.ConcurrencyManager.writeService48 [WAITING] CPU time: 0:00 java.lang.Thread.run() com.bigdata.journal.ConcurrencyManager.writeService49 [WAITING] CPU time: 0:00 java.lang.Thread.run() com.bigdata.journal.ConcurrencyManager.writeService5 [WAITING] CPU time: 0:00 java.lang.Thread.run() > -----Original Message----- > From: Peter Jones [mailto:p...@roundroom.net] > Sent: Friday, January 13, 2012 9:31 AM > To: u...@river.apache.org > Cc: dev@river.apache.org > Subject: Re: DGC threads issue > > Bryan, > > I meant that it might help for the list to "see" the specific > threads in question, as they appear in a JVM thread dump > (name, stack frames, etc.), just to be sure that we're > talking about the same thing. There is more than one kind of > thread related to DGC, and it seems that the implementation > has changed recently. But I gather that Peter F. may have > identified the root cause. > > Cheers, > > -- Peter > >
;; This buffer is for notes you don't want to save, and for Lisp evaluation. ;; If you want to create a file, visit that file with C-x C-f, ;; then enter the text in that file's own buffer. Stacks at 09:16:02 AM (uptime 1:48:56) (JSK) ConnectionManager.Reaper [SLEEPING] CPU time: 0:00 java.lang.Thread.sleep(long) net.jini.jeri.connection.ConnectionManager$Reaper.run() java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Threa (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:00 java.lang.Thread.run() (JSK) DGC Lease Checker [SLEEPING] CPU time: 0:hread.run() com.bigdata.journal.ConcurrencyManager.writeService48 [WAITING] CPU time: 0:00 java.lang.Thread.run() com.bigdata.journal.ConcurrencyManager.writeService49 [WAITING] CPU time: 0:00 java.lang.Thread.run() com.bigdata.journal.ConcurrencyManager.writeService5 [WAITING] CPU time: 0:00 java.lang.Thread.run() com.bigdatof 4366
