Hi, I am quite new to neoj4 and I started using it with the neo4j-ogm to map my java objects into the graph and back. I am experiencing quite a strange behavior when I start saving entities via OGM into the graph. It seams that the memory usage rises fast on the neo4j-server (I also experienced few OOM Exceptions):
<https://lh3.googleusercontent.com/-ydCCbXByqXo/VktNm-PHijI/AAAAAAAAAG8/xp9AKbOwiqw/s1600/neo4j.png> <https://lh3.googleusercontent.com/-_wMShgRo8RE/VktNhEFxoPI/AAAAAAAAAG0/YdVArB8EzkU/s1600/neo4jGoesOutOfMemory.png> As you can see from screens the memory rises up in terms of the seconds. I started by saving with depth of 1 (behavior described by pic1) and then also tried with depth -1 (that's pic 2 where I always hit OOM exception)., It's important to mention that saving is also very slow, making some of my requests time-out (with 3 seconds time out).. Setting the depth to 0 works as expected (in terms of memory and speed), but then I get no relationships in the graph. The interesting thing is that I am not saving too much data at all. In my use-case I end up with about 6k nodes and 6k relationships when all requests are processed. Imo that's nothing for the neo4j, thus I am surprised I am seeing this. With the graph I am trying to represent all the classes (interfaces, annotations, methods, etc) that are loaded in the JVM by starting a small example application. So with every new class being loaded I need to update the graph in order to store information I can read from the byte-code. The only "special" thing might be that I have a lot of bi-directional relationships (for example class implements interface, interface is realized by class) .. Here are some screens of my graph: <https://lh3.googleusercontent.com/-_Ew1FYyCCMY/VktQwWRY4GI/AAAAAAAAAHQ/2SoTJZzuIoU/s1600/neo2.png> <https://lh3.googleusercontent.com/-42s8twVJgyI/VktQtfxQIXI/AAAAAAAAAHI/I9D4w5byjaE/s1600/neo1.png> It must be that I am doing something wrong.. And it has to be related to the OGM.. It can not be that saving such a small number of nodes pushes the memory so high.. Here are some more information about my setup: neo4j 2.3.0, neo44-ogm 1.1.3, Ubuntu 14.04, JDK 1.7.0_70. I have no special settings than the default ones. Any help would be great.. -- You received this message because you are subscribed to the Google Groups "Neo4j" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
