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@2ndQuadrant.com www.2ndQuadrant.us
