Hi,

I'm doing pre-sales benchmarking of Weblogic Enterprise, a completely
diferent product than Weblogic Server, although they're both
heading toward J2EE features, they're coming from different starting
points.

WLE, is the older C++ tuxedo framework, with EJB container support
and the EJB DD and tools borrowed from WLS.  Unfortunately the
corba functionality underneath WLE server side is quite old and
at present only 2.2.  For external corba clients, WLE does not provide
org.omg.CORBA packages, they default to the JDK2's orb.  This
is where my problems start.

Has anyone experienced capacity limitations in the JDK2 orb.  My
benchmarking client, uses threads (100's) to simulate multi-client
use cases.  The JDK2's Orb seems to have limitations that I'm hitting.

I'm even seeing hung IIOP protocol on Stub.method() dispatching where
the return never comes (or is never seen).  The Jdk2's orb seemed to
gain some capacity by giving the VM more RAM: -Xmx256m -Xoss64k
To my suprise this helped.  I not used to applications not throwing
OUT_OF_MEMORY exceptions, and just limping along as observation suggests
for the Orb????

My problems start occuring in the 70-100 thread / FactorFinder / Stub
levels of stress.  Still happens with jit turned off.

So far Weblogic tech guys don't have insights.  It seems they don't see
customers writing threaded java clients like this...  ;(

Any thoughts on where to find other JDK2 Orb knowledgable folks.  The
javasoft list for IDL/Corba has died, no activity except the spammers.  :)

Thanks for the great EJB design thoughts here!

cheers,

curt


Curt Smith
Z-Tel
email:  [EMAIL PROTECTED]
work:   404-237-1166  x182
FAX:    404-237-1167

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