Dear all, Our error log was referring to the PermGen, so after we have increased the Java memory up to 2 GB and PermSize/PermGen to 256MB, the Tomcat began to be more responsive and it stopped to freeze (until now). I'll let you know how things are going.
Thanks and regards, Gabriel -----Original Message----- From: Tim Donohue [mailto:tdono...@duraspace.org] Sent: Thursday, February 09, 2012 5:59 PM To: Henry, Matt - OPS District Computer Technician Cc: Alexandre Magaz Graça; Gabriel Dina; DSpace-tech@lists.sourceforge.net Subject: Re: [Dspace-tech] DSpace memory issue All, To Matt's point, we have a few performance tuning recommendations posted up in the Wiki Docs at: https://wiki.duraspace.org/display/DSDOC18/Performance+Tuning+DSpace This page provides hints on how give DSpace more memory to work with if you keep encountering out-of-memory issues. https://wiki.duraspace.org/display/DSDOC18/Performance+Tuning+DSpace If you've already tried some of these options with no/little success, please let us know on this list. Also if anyone else on this list has updates to suggest for this Performance Tuning documentation, please do let us know on this list! - Tim On 2/9/2012 9:53 AM, Henry, Matt - OPS District Computer Technician wrote: > I have had this exact problem while running on windows. After > switching to linux I ran into it again and fixed it with the following command: > > Export CATALINA_OPTS=-Xms1025m -Xmx1024m -XX:MaxPermSize=512m > > Honestly, I do not know what Xms and Xmx really stand for or what > their purpose is. My best guess is that it increases the minimum and > maximum memory pool of java catalina can use. The MaxPermSize option > fixed the PermGen out of memory errors for me. > > Adjust the numbers as you see fit. > > Matt Henry > > On 2/9/12 9:42 AM, "Alexandre Magaz Graça"<alexandre.ma...@udl.cat> wrote: > >> Al 09/02/12 13:37, En/na Gabriel Dina ha escrit: >>> Dear all, >>> >>> We found in our DSpace installation (XMLUI) that JAVA uses a lot of >>> memory for just a few items added in DSpace. >>> >>> Also, from time to time DSpace freeze the tomcat process and we have >>> to kill it. >>> >>> Do you have some suggestions about this issues? >>> >>> [...] >> >> Hello Gabriel, >> >> We're also having memory problems with DSpace. Although we have >> increased Java heap space up to 1 GB it still ends up running out of >> memory. >> >> Which DSpace version do you have? Do you see a trace like the one >> bellow in DSpace logs when your Tomcat freezes? >> >> ERROR org.dspace.app.xmlui.cocoon.DSpaceCocoonServletFilter @ Serious >> Error Occurred Processing Request! >> javax.servlet.ServletException: Servlet execution threw an exception >> at >> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl >> icati >> onFilterChain.java:313) >> at >> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF >> ilter >> Chain.java:206) >> at >> org.dspace.app.xmlui.cocoon.SetCharacterEncodingFilter.doFilter(SetCh >> aract >> erEncodingFilter.java:111) >> [...] >> Caused by: java.lang.OutOfMemoryError: Java heap space >> at java.nio.HeapByteBuffer.<init>(HeapByteBuffer.java:57) >> at java.nio.ByteBuffer.allocate(ByteBuffer.java:329) >> at sun.nio.cs.StreamEncoder.<init>(StreamEncoder.java:194) >> [...] >> >> Cheers, >> Àlex >> >> --------------------------------------------------------------------- >> ----- >> ---- >> Virtualization& Cloud Management Using Capacity Planning Cloud >> computing makes use of virtualization - but cloud computing also >> focuses on allowing computing to be delivered as a service. >> http://www.accelacomm.com/jaw/sfnl/114/51521223/ >> _______________________________________________ >> DSpace-tech mailing list >> DSpace-tech@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/dspace-tech >> > > > > ---------------------------------------------------------------------- > -------- Virtualization& Cloud Management Using Capacity Planning > Cloud computing makes use of virtualization - but cloud computing also > focuses on allowing computing to be delivered as a service. > http://www.accelacomm.com/jaw/sfnl/114/51521223/ > _______________________________________________ > DSpace-tech mailing list > DSpace-tech@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/dspace-tech ------------------------------------------------------------------------------ Virtualization & Cloud Management Using Capacity Planning Cloud computing makes use of virtualization - but cloud computing also focuses on allowing computing to be delivered as a service. http://www.accelacomm.com/jaw/sfnl/114/51521223/ _______________________________________________ DSpace-tech mailing list DSpace-tech@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dspace-tech
