On Tue, 2009-10-13 at 19:40 -0600, Scott Marlowe wrote:
> On Tue, Oct 13, 2009 at 7:29 PM, Anj Adu <fotographs@gmail.com> wrote:
> > I am running Postgres 8.1.9 on an 8 core Xeon 5430 box that is showing
> > single digit CPU and IO utilization. the database size is 820G .
> > Vacuum_cost_delay=0 and maintenance_mem = 900M
> >
> > Is there an option to vacuumdb or a way to make it run parallel threads.
>
> I think that option showed up in 8.2 or 8.3.
There is no option to do that yet at any release.
We have parallel pg_restore, but that doesn't apply to vacuumdb,
reindexdb, clusterdb or any custom written jobs.
You need to break out your top few tables into separate jobs, e.g.
vacuumdb -t big1
vacuumdb -t big2
...
--
Simon Riggs www.2ndQuadrant.com