[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-5062) In the Session.flush method has a lost of perfomance about 50% when flush a large amout of data

[Juraci Paixao Krohling (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-5062?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=36079#action_36079 ] 

Juraci Paixao Krohling commented on HHH-5062:
---------------------------------------------

Sure thing. I'll add this to my list.

> In the Session.flush method has a lost of perfomance about 50% when flush a large amout of data
> -----------------------------------------------------------------------------------------------
>
>                 Key: HHH-5062
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5062
>             Project: Hibernate Core
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 3.2.6, 3.2.7, 3.3.0.CR1, 3.3.0.CR2, 3.3.0.GA, 3.3.0.SP1, 3.3.1, 3.3.2, 3.5.0.Beta-1, 3.5.0-Beta-2, 3.5.0-Beta-3, 3.5.0-Beta-4, 3.5.0-CR-1, 3.5.0-CR-2, 3.5.0-Final
>         Environment: Linux / DB2 / version 3.2.6 and above
>            Reporter: Fabiano Cury
>            Assignee: Juraci Paixao Krohling
>         Attachments: issueHibernate.JPG
>
>   Original Estimate: 30 minutes
>  Remaining Estimate: 30 minutes
>
> When the flush method is called this method call the onFlush method of class DefaultFlushEventListener and then the method flushEverythingToExecutions(event).
> This method (flushEverythingToExecutions) call many times (loop) the method log.isDebugEnabled().
> This cause a big overhead in this method.
> I suggest you to put an attribute in the method flushEverythingToExecutions(flushEverythingToExecutions(FlushEvent event, Boolean isDebugEnable) and verify this attribute before the loop for.
> Attached the print screen of profiling that help me to detect this issue.
> Tks.

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