On 07/05/11 7:10 AM, Charles Polisher wrote: > In general and with some simplifiying assumptions, a database > consists of statically pre-allocated files. The process of extending > the files happens at birth. The relative speed over the lifetime > of the database is dominated by raw I/O, not by extending the files. thats not even remotely true of many databases. PostgreSQL, for example, the files are extended as they are updated/inserted, as are the WAL files. -- john r pierce N 37, W 122 santa cruz ca mid-left coast