Matt: This is something that I have been struggling with for a long time. Going to DSpace 1.8.2 and tomcat 7 seemed to help for a while. One thing that I found that caused Java heap space errors was the solar statistics button on the Community, Collection and Item pages. This isn't a problem on our test machine, but only affects our production machine, so I am assuming that it is somehow threshold related. We have a lot of records with a lot of downloads. So, I removed the statistics buttons from the JSP pages and that solved a lot of our problems, but now I seem to have a problem every Friday night and I need to reboot tomcat.
My current setup for java heap is: JAVA_OPTS="-server -Xms1024m -Xmx2048m -Xmn64m -Dfile.encoding=UTF-8 -XX:+UseParallelGC -verbose:gc -Xloggc:/dspace/dspace/log/gc.log -XX:+HeapDumpOnOutOfMemoryError -XX:PermSize=1024m -XX:MaxPermSize=1024m -XX:-UseGCOverheadLimit" So, I expect that I will have to up my memory usage. I think this is a creeping problem and I am not sure if this is fixed in DSpace 3.2 or 4.1. George Kozak Digital Library Specialist Cornell University Library Information Technologies (CUL-IT) 218 Olin Library Cornell University Ithaca, NY 14853 607-255-8924 -----Original Message----- From: Matthew Sherman [mailto:[email protected]] Sent: Tuesday, March 25, 2014 3:06 PM To: dspace-tech Subject: [Dspace-tech] Java Heap Space Problems Hi all, I was hoping some one can give some insight to a problem we are having. We are running DSpace 1.8 and every couple of weeks we end up having to reboot the Tomcat because it crashes due to a Java heap space error. We have been trying to correct it since the beginning of the year by incrementally increasing the memory assigned to Java. By now we are at half the server memory, roughly 2 GB, assigned to Java and while it is taking longer we still are having to reboot due to heap space errors. We are not sure what the issue is and we are at loss as to how to fix it because throwing more memory at it is not fixing the problem. I would welcome any thoughts, suggestions, or advice on how to fix this. Thanks for your time and insights. Matt Sherman ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/13534_NeoTech _______________________________________________ DSpace-tech mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dspace-tech List Etiquette: https://wiki.duraspace.org/display/DSPACE/Mailing+List+Etiquette ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/13534_NeoTech _______________________________________________ DSpace-tech mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dspace-tech List Etiquette: https://wiki.duraspace.org/display/DSPACE/Mailing+List+Etiquette
