I just learned that NFS does not use a file system cache on the client side.
On the other hand, PostgreSQL relies on the file system cache for performance, because beyond a certain amount of shared_buffers performance will suffer. Together these things seem to indicate that you cannot get good performance with a large database over NFS since you can leverage memory speed. Now I wonder if there are any remedies (CacheFS?) and what experiences people have made with the performance of large databases over NFS. Yours, Laurenz Albe -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
