On Wed, 2009-05-20 at 16:01 -0400, Merlin Moncure wrote: > On Wed, May 20, 2009 at 3:11 PM, Gerhard Wiesinger <li...@wiesinger.com> > wrote: > > Hello! > > > > Is HOT in 8.3 used in the following scenario: > > INSERT ... > > DELETE ... > > at the same ratio. > > > > So for example current data is added every minute and all old data older > > than 2 years are deleted. > > > > Would the heap be bloated or is this avoided by the HOT feature of 8.3 and > > nearly kept constant? > > HOT doesn't help here...it only helps with updates and then only if > you are updating fields that are not indexed.
Partial vacuum, in 8.4, will deal with this situation, though partitioning does sound best for such clearly historical data. -- Simon Riggs www.2ndQuadrant.com PostgreSQL Training, Services and Support -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
