We've recently moved to a Zope configuration with approximately 30 separate databases mounted at mount points within a main database. Previously, we ran a single database which was approaching 300GB in size. We chose to split the database to reduce Data.fs size. We now run 30 separate ZEO Servers (on a single machine). However, after switching to this configuration we've noticed some performance issues. Initially, after a client is restarted and builds out it's caches the site runs very quickly. However as the memory usage grows the performance degrades. If the client gets into swap the client practically dies. We had 10,000 object caches on each of the databases with 2 threads on the client. 30 x 10,000 x 2 = 600,000 objects in memory. We've since reduced the cache sizes to 1,000 or 30 x 1,000 x 2 = 60,000 objects. This seemed to extend the life of a client between restarts. Generally, our client machines will hover around 97%-99% memory usage and 90%-100% CPU (on a 2 CPU machine). We still experience periodic performance problems and are looking for any input that might help us address them. Thanks for your input, -- Brian Brinegar Web Services Coordinator Engineering Computer Network