[seam-dev] JNDI Lookups, and UserTransation lookup breakdown

[Jay Balunas]

Just as a quick test - not my full work up ;-) I ran the dvdstore example
through some typical work flows to see where and what JNDI calls were made.

This was one user, running the unmodified dvdstore example.

I logged in performed several searches, and made a perchase then logged
out.  Logged in as manager and reviewed the order and changed the process
work flow.  Then logged out again.  This  might not be the exact steps, but
close.

These were the JNDI lookups:
971 ms - 2,249 inv. [NAME] java:comp/UserTransaction
69 ms - 6 inv. [NAME] jboss-seam-dvd/ShoppingCartBean/local
45 ms - 12 inv. [NAME] jboss-seam-dvd/FullTextSearchAction/local
5 ms - 1 inv. [NAME] jboss-seam-dvd/CheckoutAction/local
3 ms - 6 inv. [NAME] java:comp/env/security/securityMgr
2 ms - 17 inv. [NAME] java:/dvdEntityManagerFactory
1 ms - 28 inv. [NAME] jboss-seam-dvd/StoreManagerBean/local
0 ms - 7 inv. [NAME] jboss-seam-dvd/AuthenticatorAction/local
0 ms - 2 inv. [NAME] EJBContext
0 ms - 1 inv. [NAME] UserTransaction
0 ms - 1 inv. [NAME] env/com.jboss.dvd.seam.StoreManagerBean/em

The "UserTransaction" lookup clearly stands out as a the top offender.  With
multiple users hitting this I think the blocking threads would really pile
up.

I can run this type of basic test pretty quickly so I am going to do the
same on the seam-gen project that we use for release testing.  My hunch is
that the results will be similar.

-Jay

On Thu, Oct 2, 2008 at 10:06 AM, Pete Muir <pmuir at redhat.com> wrote:

>
> On 1 Oct 2008, at 22:53, Jay Balunas wrote:
>
>  These finding just cover the wiki application.  We need to do similar
>> investigations with other applications like dvdstore and chatroom to
>> exercise some of the other areas.
>>
>
> Yes, as the Wiki is a war, we don't do that many lookups compared to an EJB
> app.
>



-- 
blog: http://in.relation.to/Bloggers/Jay
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