Re: [Dspace-tech] JVM-Memory usage DSpace 5.1

2015-04-06 Thread Terry Brady
I also needed to increase the memory available to tomcat after upgrading from DSpace 3 to DSpace 4. Since I increased the memory, the service has been stable. Terry On Wed, Apr 1, 2015 at 3:49 AM, Christian Scheible < christian.schei...@uni-konstanz.de> wrote: > Thanks for your quick reply. We

Re: [Dspace-tech] JVM-Memory usage DSpace 5.1

2015-04-02 Thread Hilton Gibson
PSI-Probe works for me. ​ Cheers hg *Hilton Gibson* Ubuntu Linux Systems Administrator JS Gericke Library Room 1025C Stellenbosch University Private Bag X5036 Stellenbosch 7599 South Africa Tel: +27 21 808 4100 | Cell: +27 84 646 4758 On 2 April 2015 at 08:52, Christian Scheible < christian.s

Re: [Dspace-tech] JVM-Memory usage DSpace 5.1

2015-04-01 Thread Christian Scheible
Hi Hilton, I tried psi-probe and other profiling tools but psi-probe didn't work and it seems that the headless OpenJDK is missing some tools like jstat which would help. We increased the memory of our JVM to 4 Gigabyte and will observe how DSpace behaves. Thanks for your help Christian Am

Re: [Dspace-tech] JVM-Memory usage DSpace 5.1

2015-04-01 Thread Hilton Gibson
Hi Christian Perhaps somebody could do Java profiling on some big production systems to see where the RAM goes. See: http://wiki.lib.sun.ac.za/index.php/SUNScholar/Optimisations/Java Cheers hg *Hilton Gibson* Ubuntu Linux Systems Administrator JS Gericke Library Room 1025C Stellenbosch Universi

Re: [Dspace-tech] JVM-Memory usage DSpace 5.1

2015-04-01 Thread Christian Scheible
Thanks for your quick reply. We will increase the heap size. The question just is if there is a known issue causing more memory to be used? Because it was fine before the upgrade. Best Regards Christian Am 01.04.2015 um 11:39 schrieb Hilton Gibson: Perhaps this will help: http://wiki.lib.sun.

Re: [Dspace-tech] JVM-Memory usage DSpace 5.1

2015-04-01 Thread Hilton Gibson
Perhaps this will help: http://wiki.lib.sun.ac.za/index.php/SUNScholar/Prepare_Ubuntu/S05/Ubuntu-14.04#Java_environment_settings_used_for_SUNScholar Cheers hg *Hilton Gibson* Ubuntu Linux Systems Administrator JS Gericke Library Room 1025C Stellenbosch University Private Bag X5036 Stellenbosch 7

[Dspace-tech] JVM-Memory usage DSpace 5.1

2015-04-01 Thread Christian Scheible
Hi guys, We are running a DSpace 5.1 instance with about 25000 items on Ubuntu Server 14.04 with OpenJDK 1.7.0_75. We set Xmx to 2g so the JVM has 2 Gigabyte of RAM. If I inspect the memory usage I see that there are about 1900 MiB in use. So most of the memory is used. This leads to OutOfMemor