[jboss-jira] [JBoss JIRA] (DROOLS-1016) Too much memory consumption while running code on drools6.

[Thomas Leung (JIRA)]

    [ https://issues.jboss.org/browse/DROOLS-1016?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13144778#comment-13144778 ] 

Thomas Leung commented on DROOLS-1016:
--------------------------------------

Thanks Mario, and how about the heap size? We observed there is used heap increased from 0.5GB to 1.3GB when migrating from Drools 5 to Drools 6. Will it be caused by phreak algorithm? Or any other suggestion that we can reduce the heap consumption?

> Too much memory consumption while running code on drools6.
> ----------------------------------------------------------
>
>                 Key: DROOLS-1016
>                 URL: https://issues.jboss.org/browse/DROOLS-1016
>             Project: Drools
>          Issue Type: Bug
>          Components: core engine
>    Affects Versions: 6.2.0.Final
>            Reporter: Vivek Hingorani
>            Assignee: Mario Fusco
>
> The memory usage on drools6 is far more then drools 5. Can we run the drools6 code with Rete algorithm?	
> We recently migrated our project from Drools 5.3.0.Final version to Drools 6.2.0.Final version. In production we can see a significant increase in the memory consumption per node. we are using java 1.7. We increased the permgen space as well for drools6 from 0.5 GB to 1 GB but still the increase is too much. Is there any solution for the same.
> Drools5 memory usage was 0.5GB per node with 0.5GB permgen space
> Drools6 memory usage is 1.3GB per node with 1GB permgen space.
> Node here is a jvm as we are using oracle coherence.
> If further details are needed , let me know.



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