Hey Nuo, Good it worked, and yes, enlarging the permgen size was just a palliative action. In fact, I forgot to check which version you were running (shame on me).
But as I said, good to know that now it works smoothly. Cheers Adriano Almeida @adrianoalmeida7 <http://twitter.com/adrianoalmeida7> 2011/9/7 Peter Neubauer <[email protected]> > Nice, > glad to see it worked out! > > Cheers, > > /peter neubauer > > GTalk: neubauer.peter > Skype peter.neubauer > Phone +46 704 106975 > LinkedIn http://www.linkedin.com/in/neubauer > Twitter http://twitter.com/peterneubauer > > http://www.neo4j.org - Your high performance graph database. > http://startupbootcamp.org/ - Öresund - Innovation happens HERE. > http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. > > > On Wed, Sep 7, 2011 at 8:12 PM, Nuo Yan <[email protected]> wrote: > > > > > According to this: http://neo4j.org/forums/#nabble-td3248377, I upgraded > > to 1.4.1 and the problem goes away. > > > > I guess there must be a bug in the 1.4.0 REST API that leaks classloader > > memory or so, and GC didn't happen as expected in PermGen. Anyways, it > looks > > great after upgrading to 1.4.1. Memory monitoring graph shows GC happens > as > > desired in PermGen. > > > > Thank you! > > > > On Sep 6, 2011, at 11:30 PM, Nuo Yan wrote: > > > > > Hey Adriano and everyone, > > > > > > I finally got a chance to monitor/profile the neo4j process with > VisualVM > > when I run my set of tests. > > > > > > It seems that after running the set of tests once, ~ 50M of PermGen was > > used. However, subsequent test runs simply multiples that, which worries > me > > a little. After the fourth run of the tests, ~ 200M of PermGen space was > > used. > > > > > > My app accesses to neo4j completely using the REST interface. During > the > > test run, new nodes and relationships are being frequently created. > There > > are batch requests that performs multiple actions at once (number of > actions > > is reasonable, really small in this case, usually a few, or tenth). There > > are also gremlin script executions through REST (send the gremlin query > over > > to the server through REST API). Most of the gremlin queries are > traversals > > and returns the vertices or edges match the constraints. > > > > > > Total number of nodes created during a test run is only hundreds. There > > are more relationships, but at most thousands. > > > > > > That's basically all of the things that are done against neo4j server > > during a test run. Given this, do you think the PermGen usage is > reasonable? > > Or do you think something is very wrong? I worried that setting a larger > > PermGen would only postpone but not resolve the OutOfMemory problem. > > > > > > Let me know if any other info is needed. > > > > > > Thanks much, > > > Nuo > > > > > > > > > > > > > > > On Aug 29, 2011, at 6:09 AM, Adriano Henrique de Almeida wrote: > > > > > >> Hi Nuo, any results here? > > >> > > >> Cheers > > >> > > >> 2011/8/26 Nuo Yan <[email protected]> > > >> > > >>> Hey Adriano, > > >>> > > >>> Thanks very much for your reply. I will try with MaxPermSize. > > >>> > > >>> It's on my local machine, we are evaluating Neo4j and do not have it > on > > >>> production yet. I'm accessing the server through the REST APIs, the > app > > is > > >>> separate from Neo. I will see if I can do some profiling on Neo when > I > > run > > >>> my tests. > > >>> > > >>> Thanks, > > >>> Nuo > > >>> > > >>> > > >>> > > >>> On Fri, Aug 26, 2011 at 3:53 PM, Adriano Henrique de Almeida < > > >>> [email protected]> wrote: > > >>> > > >>>> Hey Nuo, > > >>>> > > >>>> wrapper.java.maxmemory and Xmx won't help, since it is a > PermGenSpace > > >>>> problem, and they only deal with HeapSpace. Did you try with: > > >>>> -XX:*MaxPermSize > > >>>> **?* > > >>>> > > >>>> Anyway, something very wrong is happening, since you have few nodes. > > >>>> > > >>>> It is happening only on production, or development also? If it is > > >>> happening > > >>>> on development, try to isolate the situation where you're stucking > the > > >>>> permgen. Run you app with VisualVM, for instance, or any other > > profiler. > > >>>> Aren't you dealing with classloaders on your app? > > >>>> > > >>>> Cheers > > >>>> > > >>>> Adriano Almeida > > >>>> > > >>>> > > >>>> > > >>>> 2011/8/26 Jim Webber <[email protected]> > > >>>> > > >>>>> Hi Nuo, > > >>>>> > > >>>>> if you're using Neo4j server then you can edit the value in > > >>>>> conf/neo-wrapper.conf > > >>>>> > > >>>>> wrapper.java.maxmemory=1024 > > >>>>> > > >>>>> Jim > > >>>>> _______________________________________________ > > >>>>> Neo4j mailing list > > >>>>> [email protected] > > >>>>> https://lists.neo4j.org/mailman/listinfo/user > > >>>>> > > >>>> > > >>>> > > >>>> > > >>>> -- > > >>>> Adriano Almeida > > >>>> Caelum | Ensino e Inovação > > >>>> www.caelum.com.br > > >>>> _______________________________________________ > > >>>> Neo4j mailing list > > >>>> [email protected] > > >>>> https://lists.neo4j.org/mailman/listinfo/user > > >>>> > > >>> _______________________________________________ > > >>> Neo4j mailing list > > >>> [email protected] > > >>> https://lists.neo4j.org/mailman/listinfo/user > > >>> > > >> > > >> > > >> > > >> -- > > >> Adriano Almeida > > >> Caelum | Ensino e Inovação > > >> www.caelum.com.br > > >> _______________________________________________ > > >> Neo4j mailing list > > >> [email protected] > > >> https://lists.neo4j.org/mailman/listinfo/user > > > > > > > _______________________________________________ > > Neo4j mailing list > > [email protected] > > https://lists.neo4j.org/mailman/listinfo/user > > > _______________________________________________ > Neo4j mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user > -- Adriano Almeida Caelum | Ensino e Inovação www.caelum.com.br _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
