Hi, I completely agree on increasing values on documentation. Obviously 96MB is not sufficient anymore, even 128M, for sure. Minimum 128MB and recommended 192MB seem ok.
In the meantime, pushing a bit more on investigations is also a good idea, even if I found your measurements a bit high. From the thread dumps I've done, I don't remember seeing so mush used memory, even for Home page... Good luck with that! :-) Guillaume Fenollar 2013/2/25 Vincent Massol <[email protected]> > Hi, > > I'm going to increase the permgen to 192MB for now since we need XWiki to > work and I've raised > http://jira.xwiki.org/browse/XWIKI-8853 > > Thanks > -Vincent > > On Feb 25, 2013, at 3:01 PM, Vincent Massol <[email protected]> wrote: > > > Hi devs, > > > > Right now we recommend this on > http://platform.xwiki.org/xwiki/bin/view/AdminGuide/Installation#HPrerequisites: > > "A minimum of 300MB of heap memory and 96MB of permGen. Recommended > values are above 512MB for the heap and 128MB for the permGen (-Xmx512m > -XX:MaxPermSize=128m)" > > > > I've discovered on > http://ci.xwiki.org/job/xwiki-enterprise-test-extension/org.xwiki.enterprise$xwiki-enterprise-test-extension/1543/consolethat > we had an OOM and it seems to happen more and in more in our > functional tests on CI. Something we've done must have increased our > permgen memory. > > > > I've done some measurements with yourkit and here's what I found: > > * After XWiki is started and before any page is called we already use > 64MB of permgen > > * After calling the home page, the permgen used goes to 101MB > > * After calling a page using the code macro, the permgen goes to 132MB > > > > So it seems that your default value of 96MB and recommended value of > 128MB are not enough… > > > > BTW forcing garbage collection reduces from 132MB to 130MB (not much). > > > > We need to either find what is taking all our permgen memory or if it's > legit increase our recommendations and the default value we use in > start_xwiki.sh/bat > > > > Any idea? > > > > My hunch tells me the Extension Manager could be the cause. > > > > Thanks > > -Vincent > > _______________________________________________ > devs mailing list > [email protected] > http://lists.xwiki.org/mailman/listinfo/devs > _______________________________________________ devs mailing list [email protected] http://lists.xwiki.org/mailman/listinfo/devs
