>1. How does database size affect insert performance? >2. Why does number of written buffers increase when database size grows? It might be related to indexes. Indexes size affect insert performance. >3. How can I further analyze this problem? Try without indexes? -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance