No action from rsync 2.4.6 on HP-UX 11.0

[wcampill at csc.com]

Greetings:

I have two systems, HP model 9000/800/R380. They are identical systems
running 64-bit HP-UX 11.0 with 1GB RAM.

I have downloaded and installed the HP rsync binaries, version 2.4.6 on
both the source and target systems.

The directory tree on the source system contains over 58GB of data in 1.3
million objects (including directories, links and files), 1.2 million
normal files. The target directory is empty with 110GB free.

With sample data sets, with several thousand files and hundreds of MB of
data, rsync works.

When I go to my production data, rsync chugs away for about an hour and a
half and then I get a prompt back. Nothing is transferred between systems.
I run rsync in command line mode. Here's what it looks like:
     Mainsys # cd /export/data/stuff
     /usr/local/bin/rsync -vca --delete --rsync-path=/usr/local/bin/rsync .
Altsys:/export/data
     building file list ... Mainsys #

Memory usage is not exceeding 50%.

Any ideas? How can I get rsync to work in this situation?

Bill