Hi Alan, At Longsight, we customize the JAVA_OPTS in dspace/bin/dspace https://github.com/LongsightGroup/DSpace/blob/longsight-4_x/dspace/bin/dspace#L66
#Allow user to specify java options through JAVA_OPTS variable if [ "$JAVA_OPTS" = "" ]; then #Default Java to use 256MB of memory JAVA_OPTS="-server -Xmx256m" fi Previously, when I was at Ohio State, I had more in my JAVA_OPTS, to help with permgen issues. https://github.com/osulibraries/DSpace/blob/osukb/dspace/bin/dspace#L66 #Allow user to specify java options through JAVA_OPTS variable if [ "$JAVA_OPTS" = "" ]; then #Default Java to use 256MB of memory JAVA_OPTS="-server -Xmx512m -XX:MaxPermSize=128m -XX:+CMSClassUnloadingEnabled" fi By adding the "-server" your ensuring that Java runs in server mode, as opposed to client mode. Server has slower initial startup, but a better memory footprint, and better performance for a longer running task, as per: http://stackoverflow.com/questions/198577/real-differences-between-java-server-and-java-client Then, if one of our clients has some jumbo-sized content that just isn't completing the cron jobs, then we'll temporarily bump the Xmx memory limit high, such as 4G. ________________ Peter Dietz Longsight www.longsight.com pe...@longsight.com p: 740-599-5005 x809 On Tue, May 27, 2014 at 7:03 PM, Terry Brady <tw...@georgetown.edu> wrote: > Alan, > > We override JAVA_OPTS for the nightly filter-media task in our cron. > > export JAVA_OPTS=-Xmx1200m;dspace filter-media ... > > We have a set of automated ingest tools. We set JAVA_OPTS in some of the > workflows that are run by those tools. > > https://github.com/Georgetown-University-Libraries/batch-tools/blob/master/bin-src/dspaceBatch.sh > > Terry > > > > On Tue, May 20, 2014 at 1:33 AM, Alan Orth <alan.o...@gmail.com> wrote: >> >> Hi, >> >> I'm curious if anyone sets memory limits for DSpace's various cron jobs? >> >> Lately we've been having Tomcat's java process get killed every morning >> around the same time, and all dmesg shows is that "java" was killed by >> the kernel's OOM killer. Catalina logs don't show any "SEVERE" errors, >> so I have to assume it's the cron jobs which are using up loads of >> memory and then confusing the kernel, which then identifies Tomcat's >> java as the memory hog and kills it. >> >> So I'm just curious if anyone has had these kinds of problems, and >> if/what they set their JAVA_OPTS to in crontab. >> >> The long term plan of course is to move to a machine with more memory >> (currently 4GB). >> >> Thanks, >> >> DSpace version is 3.1, OS is Ubuntu 12.04. >> >> -- >> Alan Orth >> alan.o...@gmail.com >> http://alaninkenya.org >> http://mjanja.co.ke >> "I have always wished for my computer to be as easy to use as my >> telephone; my wish has come true because I can no longer figure out how >> to use my telephone." -Bjarne Stroustrup, inventor of C++ >> GPG public key ID: 0x8cb0d0acb5cd81ec209c6cdfbd1a0e09c2f836c0 >> >> >> >> ------------------------------------------------------------------------------ >> "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE >> Instantly run your Selenium tests across 300+ browser/OS combos. >> Get unparalleled scalability from the best Selenium testing platform >> available >> Simple to use. Nothing to install. Get started now for free." >> http://p.sf.net/sfu/SauceLabs >> _______________________________________________ >> DSpace-tech mailing list >> DSpace-tech@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/dspace-tech >> List Etiquette: >> https://wiki.duraspace.org/display/DSPACE/Mailing+List+Etiquette > > > > > -- > Terry Brady > Applications Programmer Analyst > Georgetown University Library Information Technology > https://www.library.georgetown.edu/lit/code > 425-298-5498 > > ------------------------------------------------------------------------------ > The best possible search technologies are now affordable for all companies. > Download your FREE open source Enterprise Search Engine today! > Our experts will assist you in its installation for $59/mo, no commitment. > Test it for FREE on our Cloud platform anytime! > http://pubads.g.doubleclick.net/gampad/clk?id=145328191&iu=/4140/ostg.clktrk > _______________________________________________ > DSpace-tech mailing list > DSpace-tech@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/dspace-tech > List Etiquette: > https://wiki.duraspace.org/display/DSPACE/Mailing+List+Etiquette ------------------------------------------------------------------------------ Time is money. Stop wasting it! Get your web API in 5 minutes. www.restlet.com/download http://p.sf.net/sfu/restlet _______________________________________________ DSpace-tech mailing list DSpace-tech@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dspace-tech List Etiquette: https://wiki.duraspace.org/display/DSPACE/Mailing+List+Etiquette
