[omniORB] IIOP Latency with Java

[uche.ogbuji@fourthought.com]

Running OmniORBpy with omni 2.8.0 on Red Hat 6.1 on the server side.  A 
development partner is connecting to this server using JDK 1.2 ORB on NT.  We 
are suffering an overhead of _exactly_ 20 milliseconds on each call (it almost 
feels like a strobe).  This overhead does not manifest itself on omni/Linux 
talking to omni/Linux remotely.  We tried Visibroker/Java on NT with the same 
result.  Does anyone know what might be causing this?  It feels like a config 
error because all the benchmarks we've seen of Visi/client to omni/server seem 
blazingly fast.  The input parameters as well as the return values are all 
simple strings.

Any ideas?  Trolling the list archives turned up murmurings of "TCP_NODELAY" 
and similar posible solutions, but it wasn't clear that they were applicable 
to our current situation.

I know sample code always helps.  Unfortunately, since we're dealing with a 
development partner it is easier to first see if this rings a bell with 
anyone.  If not, I'll try to work out some minimal code that illustrates the 
problems.

Thanks.

-- 
Uche Ogbuji
Fourthought, Inc., IT Consultants
uche.ogbuji@fourthought.com	(970)481-0805
Software-engineering, project-management, knowledge-management
http://Fourthought.com		http://OpenTechnology.org