Laurent Laborde <kerdezixe@xxxxxxxxx> wrote: > BTW, if you have any idea to improve IO performance, i'll happily > read it. We're 100% IO bound. At the risk of stating the obvious, you want to make sure you have high quality RAID adapters with large battery backed cache configured to write-back. If you haven't already done so, you might want to try elevator=deadline. > xfs ? If you use xfs and have the aforementioned BBU cache, be sure to turn write barriers off. -Kevin -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
