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

[Fabiano Cury (JIRA)]

In the Session.flush method has a lost of perfomance about 50% when flush a large amout of data
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                 Key: HHH-5062
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5062
             Project: Hibernate Core
          Issue Type: Improvement
          Components: core
    Affects Versions: 3.5.0-Final, 3.5.0-CR-2, 3.5.0-CR-1, 3.5.0-Beta-4, 3.5.0-Beta-3, 3.5.0-Beta-2, 3.5.0.Beta-1, 3.3.2, 3.3.1, 3.3.0.SP1, 3.3.0.GA, 3.3.0.CR2, 3.3.0.CR1, 3.2.7, 3.2.6
         Environment: Linux / DB2 / version 3.2.6 and above
            Reporter: Fabiano Cury
         Attachments: issueHibernate.JPG

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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