[jboss-jira] [JBoss JIRA] (DROOLS-775) Performance degradation with objects with many properties in working memory.

[Mario Fusco (JIRA)]

    [ https://issues.jboss.org/browse/DROOLS-775?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13063204#comment-13063204 ] 

Mario Fusco commented on DROOLS-775:
------------------------------------

I'll check your reproducer, thanks for it.

One quick question: did you check that the performance degradation you experienced is caused by the fact that your objects have many fields? Did you try the same with an object with only 2 or 3 properties? Are the performance comparable in that case?

> Performance degradation with objects with many properties in working memory.
> ----------------------------------------------------------------------------
>
>                 Key: DROOLS-775
>                 URL: https://issues.jboss.org/browse/DROOLS-775
>             Project: Drools
>          Issue Type: Bug
>          Components: core engine
>    Affects Versions: 6.0.0.Final, 6.1.0.Final, 6.2.0.Final, 6.3.0.Final
>         Environment: Ubuntu 14.10 x64, jdk 8
>            Reporter: Federico Bertola
>            Assignee: Mario Fusco
>              Labels: regression
>         Attachments: drools-test.zip
>
>
> I experience some major performance degradation while migrating from drools 5.0.1 to 6.x. I'm inserting objects with many properties into the working memory and firing some very basic rules which will match against a very small subset of those properties. I expected that the older version of Drools, which uses pure reflection, to be somewhat slower that the newer, which uses some clever ASM optimization., but this is not the case. I've also noticed that if the required properties are scattered across multiple level of hierarchy, the performance issue will aggravate.



--
This message was sent by Atlassian JIRA
(v6.3.15#6346)