On Fri, Mar 30, 2012 at 02:45:36PM +0000, Campbell, Lance wrote: > PostgreSQL 9.0.x > When PostgreSQL storage is using a relatively large raid 5 or 6 array is there any value in having your tables distributed across multiple tablespaces if those tablespaces will exists on the same raid array? I understand the value if you were to have the tablespaces on different raid arrays. But what about on the same one? > > > Thanks, > > Lance Campbell > Software Architect > Web Services at Public Affairs > 217-333-0382 > I have seen previous discussions about using different filesystems versus a single filesystem and one advantage that multiple tablespaces have is that an fsync on one table/tablespace would not block or be blocked by an fsync on a different table/tablespace at the OS level. Regards, Ken -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
