Quick followup, in case it isn't clear (as I was asked about this off-list). The preference would be to share your DSpace setup/configuration information directly on this listserv (or you can post up on the wiki if you prefer). That way we can get more eyes on it, and hopefully come up with better suggestions.
Also, this may be an area where sharing this information can help us to document some "best practices", based on recommended setups and performance hints/tips that people have. So, I'm hoping that as this thread continues, we can pull out the main tips/hints and document them for future reference. At the same time, we can pull out the common memory/performance issues so that they can be investigated further, and hopefully resolved as soon as possible. Committers -- it'd also be great if you can take a few moments to send your basic setup info & Dspace size to the listserv (especially noting anything that you may have tweaked above & beyond the normal DSpace install docs, like JAVA_OPTS or similar settings). This can hopefully encourage others to do the same. - Tim On 9/29/2010 9:46 AM, Tim Donohue wrote: > Hi all, > > Interesting thread so far and keep up the good discussion. > > I think it'd be helpful to us all if we could all share more information > about our DSpace setups (similar to Mark Wood's tip on his local > JAVA_OPTS settings). The more we know about your > DSpace/Java/Tomcat/Postgres (or Oracle) configurations, server setups, > etc. the better chance we have at helping you out. There may be some > immediate performance improvements you can achieve just by tweaking your > setup/configurations slightly. > > I had setup a basic template for this on the Wiki at > https://wiki.duraspace.org/display/DSPACE/ScalabilityIssues1.6 > But, feel free to just send info along in any format you wish. The > template was mostly there to give everyone an idea of what type of > information can be useful to us (so that we can hopefully provide you > with some helpful suggestions and find longer term fixes). > > Obviously, we also want to track down and fix any memory leaks or larger > problems as well. So if you've already discovered specific issues, let > us know about those as well, so we can add them to our Issue Tracker > (http://jira.dspace.org/) and schedule them to be resolved. > > Thanks, > > Tim Donohue > Technical Lead for DSpace Project > DuraSpace.org > > On 9/29/2010 7:59 AM, Mark H. Wood wrote: >> We're comfortably running *three* production DSpace instances in a >> single Tomcat 6 with these limits: >> >> JAVA_OPTS="-Xmx1024M -Xms768M" >> JAVA_OPTS="$JAVA_OPTS -XX:MaxPermSize=128M" >> JAVA_OPTS="$JAVA_OPTS -XX:PermSize=32M" >> >> That's on a box with 3GB of physical memory. One DSpace instance is >> 1.6, and the other two are 1.5. >> >> Now, I do have an old weekly reminder to check PermGen on that box, >> but it is always around half filled these days. We had problems in >> the past, but newer versions of DSpace seem to do much better in that >> regard. I can't recall the last time we had to restart that Tomcat >> just to clean up memory. >> >> We have a development box with maybe two dozen DSpace instances, none >> of them very busy at all, various versions and states of disrepair, >> and we do have to restart Tomcat there from time to time if we are >> doing a lot of webapp. reloading. The limits there are: >> >> JAVA_OPTS="-Xmx1024M -Xms128M" >> JAVA_OPTS="$JAVA_OPTS -XX:PermSize=192M" >> JAVA_OPTS="$JAVA_OPTS -XX:MaxPermSize=384M" >> >> on a 4GB machine. >> >> >> >> >> ------------------------------------------------------------------------------ >> >> Start uncovering the many advantages of virtual appliances >> and start using them to simplify application deployment and >> accelerate your shift to cloud computing. >> http://p.sf.net/sfu/novell-sfdev2dev >> >> >> >> _______________________________________________ >> DSpace-tech mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/dspace-tech ------------------------------------------------------------------------------ Start uncovering the many advantages of virtual appliances and start using them to simplify application deployment and accelerate your shift to cloud computing. http://p.sf.net/sfu/novell-sfdev2dev _______________________________________________ DSpace-tech mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dspace-tech
