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From "Jean-Louis MONTEIRO (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (OPENEJB-1955) TomEE 1.5.1 SNAPSHOT (and CDI beans) running slow on my production server
Date Thu, 29 Nov 2012 07:40:58 GMT

    [ https://issues.apache.org/jira/browse/OPENEJB-1955?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13506291#comment-13506291
] 

Jean-Louis MONTEIRO commented on OPENEJB-1955:
----------------------------------------------

Hi Howard,

I read carefully all your messages and went into some VisualVM snapshots.
Maybe I missed something but did not saw significant overhead in OpenEJB/TomEE.

In some of them, I saw BVal.

Anyway, yes the query cache can provide huge improvements cause you don't have the sql cpu
time in the database itself, but you also don't have the time spent in network, extracting
results, creating objects, etc.

But, it has to be configured carefully and I'm my opinion should be primary on read only data
(reference data to name but a few).
On read/write data, the result is not that significant as you have o deal with transaction
and synchronize accesses. Moreover, in a clustered environment, you have to set up a distributed
cache which is really painful to configure and which provide a significant overhead. In other
words, it's sometimes worse that without cache.

With that big picture in mind, I'm not sure we have to provide default settings for cache
in EclipseLink or Hibernate/OpenJPA btw.
But, that could be interesting to put a page up on the site describing possible optimizations
per JPA Provider. WDYT?
I'm happy to create the page and let you fill it with EclipseLink specific configurations.

Are you sure that's the only difference between glassfish and TomEE?
That seems strange to me Glassfish is caching queries out of the box.

Anyway, a big thanks for your investigations and time.


                
> TomEE 1.5.1 SNAPSHOT (and CDI beans) running slow on my production server
> -------------------------------------------------------------------------
>
>                 Key: OPENEJB-1955
>                 URL: https://issues.apache.org/jira/browse/OPENEJB-1955
>             Project: OpenEJB
>          Issue Type: Question
>          Components: container system
>    Affects Versions: 1.6.0
>         Environment: Windows Server 2003, 32-bit, PrimeFaces 3.5 SNAPSHOT, PrimeFaces
Push (Atmosphere/websockets) configured;
> Internet connection is powered by Verizon Wireless 4G
>            Reporter: Howard W. Smith, Jr.
>            Priority: Minor
>              Labels: 2003, atmosphere, server, tomee, windows
>             Fix For: 1.6.0
>
>         Attachments: 20121128_profileLogin1_getOrderNumberList.jpg, 20121128_profileLogin1.jpg,
20121128_profileLogin2_getOrderNumberList.jpg, 20121128_profileLogin2.jpg, 20121128_profileLogin3_getOrderNumberList.jpg,
20121128_profileLogin3.jpg, 20121128_profileLogin_filterByDynamicSQL.jpg, 20121128_profileLogin_filterByNamedQuery.jpg,
20121128_profileLogin_initOrdersController1.jpg, 20121128_profileLogin_initOrdersController2.jpg,
20121128_profileLogin_initOrdersController3.jpg, catalina.2012-11-27.log, jvisualvm_20121127.csv,
jvisualvm_20121127.html, jvisualvm_20121127.nps, jvisualvm.csv, jvisualvm.html, jvisualvm.nps,
jvisualvm_tomee_excel_smaller.csv, jvisualvm_tomee.html, jvisualvm_tomee.nps, jvisualvm_tomee_smaller.csv,
jvisualvm_tomee_smaller.html, web.xml
>
>   Original Estimate: 612h
>  Remaining Estimate: 612h
>
> I was working with Romain and Mark Struberg on this one, and decided to open an issue,
so I could attach files and continue discussion here.
> My TomEE/CDI-managed-beans web application is running really slow on production server
(Windows Server 2003 32-bit Verizon Wireless 4G internet connection); runs faster on Windows
Server 2008 64bit (cablemodem internet connection).
> Currently in production, the Glassfish 3.1.2.2 and JSF-managed-beans version of the web
application is running much faster than the TomEE/CDI-managed-beans version of the web application.
> Per Romain and Mark, I ran jvisualvm to provide some benchmarks.
> Please review attached files and confirm and advise.

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