Hannu Krosing wrote:
Do you mean "written to disk", or written out from shared_buffers to disk cache ?
The later turns into the former eventually, so both really. The kernel will do some amount of write combining for you if you're lucky. But not in all cases; it may decide to write something out to physical disk before the second write shows up.
-- Greg Smith 2ndQuadrant US Baltimore, MD PostgreSQL Training, Services and Support greg@xxxxxxxxxxxxxxx www.2ndQuadrant.us -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
