[hibernate-dev] Memory consumption

Andrej Golovnin golovnin at gmx.net
Wed May 9 16:35:02 EDT 2012

Hi all,

I have today deployed our application for the first time
on JBoss 7 with the latest Hibernate and Hibernate Search versions.
And I was totally shocked when I saw the memory consumption.

I have created two screen shots from the memory dumps. The screen shots
are attached to this mail. Please take a look at them. The screen shot
names contains version numbers of the used Hibernate and Hibernate Search
frameworks. The memory dumps were created for one and the same
application version. I can't believe that the latest versions require nearly
twice as much memory as the old versions to perform the same tasks.
What's happen?

Is this a known problem? Do you have any plans to change this situation,
e.g. to work on reducing memory consumption? Or maybe you already 
started to work on this problem?

We have been running our application with 768MB for max heap size and
serving hundreds of users. And now using the same memory settings I can
just deploy the application. :-(

Best regards
Andrej Golovnin

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