Re: Postgresql system requirements to support large databases.

wdouma(at)zootweb(dot)com (wilbur douma) writes:
> We are looking at implementing a large Postgresql database (50GB -
> 100GB) and are wondering if there are any limitations or problems for
> a database of this size running on 32-bit architecture.

The only thing a 64-bit arch will buy you is somewhat better support for
very large amounts of RAM (more than 4Gb). That might be worth having
depending on what your access patterns to the database will be like,
since more RAM would let more of the database be cached in memory.
But it's by no means a certain winner.

Personally I think you'd be better advised to worry about the quality of
your disk subsystem than to spend money on 64-bit buzzword compliance.

You can find more about such topics in the pgsql-performance archives.

regards, tom lane