Hello,

I have recently installed a new environment using windows 2003, biztalk
2002 SP1 and XLANG. I'm seeing an overall poor performance on the XLANG
side with orchestration schedules not instantiating but only when I try
to submit more than a certain number of messages through the system.
The orchestration itself is a delay shape attached to a database, it
checks every 60 seconds to see if a particular message has already been
processed by the message, if so another message gets sent and the
schedule is done.
When I submit at most 3 msgs/min the system appears to work. By the
time I reach 5 msgs/min some messages make it through and others do
not, the orchestration that is waiting in the retry queue stops
retrying (the retries left counter remains constant) and the MSMQ
queues instantiated by the orchestration remain in MSMQ and never get
cleaned up.
Unfortunately, our  volumes are higher than the 3 msgs/min that the
system seems to handle.
This is running on a single CPU 1.266 GHz Pentium with 1 GB of RAM.

I spent time with Microsoft setting up the XLANG, MSMQ and clustering
but I haven't had a chance to get on this issue with them and wanted to
find out if anyone has had the same kind of issue. It seems like
Biztalk just isn't able to instantiate XLANG schedules fast enough when
running in a clustered environment but I have no idea how to diagnose
it or why it would be happening.

Thanks much
Jose

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