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[AWIPS #QNP-525086]: cave hang due to edex hang serving data

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  • Subject: [AWIPS #QNP-525086]: cave hang due to edex hang serving data
  • Date: Tue, 27 Jan 2015 15:55:13 -0700
Thanks Art,

I will up the memory for the upcoming 14.4.1 release and hopefully that will 
solve the problem of Qpid not restarting after the queue has grown large.

Best,

Michael



> Michael,
> 
> FYI, I found this blurb in 
> https://www.unidata.ucar.edu/software/awips2/doc/Release_Notes_13.4.1.pdf:
> 
> ____________________
> Problem: Performance Housekeeping: Java Qpidd Broker Setup
> OB13.4.1 introduced the Java qpidd broker in AWIPS. The broker was not tuned 
> in terms of its
> memory use, however, and the following should be added to 
> /awips2/qpidd/bin/qpid-server.
> 
> JAVA_GC="-XX:+UseConcMarkSweepGC -XX:+HeapDumpOnOutOfMemoryError" \
> 
> to:
> JAVA_GC="-XX:+UseConcMarkSweepGC -XX:+CMSIIncrementalMode -XX:NewSize=300m 
> -XX:MaxSize=300m -XX:SurvivorRatio=6 -XX:+HeapDumpOnOutOfMemoryError 
> -XX:HeapDumpPath=/data/fxa/qpid" \
> 
> Without this, BCQ's qpidd broker hit OutOfMemory errors, which would cause 
> problems in the field.
> 
> Required Behavior: Manage memory appropriately so we do not get Out Of Memory 
> on qpidd.
> (DR 16395)
> ____________________
> 
> I found that the first definition above was being used in the installed 
> version of CAVE, so
> I've added the modified JAVA_GC definition specified above (with 
> /data/fxa/qpid changed to
> /awips2/qpid) to my /awips2/qpid/bin/qpid-server file and will see if it 
> makes any difference.
> 
> Art
> 
> ----- Original Message -----
> > From: "Unidata AWIPS Support" <address@hidden>
> > To: address@hidden
> > Sent: Thursday, January 22, 2015 5:04:34 PM
> > Subject: [AWIPS #QNP-525086]: cave hang due to edex hang serving data
> >
> >
> > Arthur A Person,
> >
> > Your Ticket has been received, and a Unidata staff member will review it and
> > reply accordingly. Listed below are details of this new Ticket. Please make
> > sure the Ticket ID remains in the Subject: line on all correspondence
> > related to this Ticket.
> >
> >     Ticket ID: QNP-525086
> >     Subject: cave hang due to edex hang serving data
> >     Department: Support AWIPS
> >     Priority: Normal
> >     Status: Open
> >
> >
> >
> > Please let us know how we can assist you further.
> >
> > Unidata User Support
> >
> >
> 
> --
> Arthur A. Person
> Research Assistant, System Administrator
> Penn State Department of Meteorology
> email:  address@hidden, phone:  814-863-1563
> 
> 


Ticket Details
===================
Ticket ID: QNP-525086
Department: Support AWIPS
Priority: Normal
Status: Open