Re: Excessive vacuum times

On Mon, Dec 12, 2005 at 11:09:01PM -0500, Tom Lane wrote:
> "Jim C. Nasby" <jnasby@pervasive.com> writes:
> > On Mon, Dec 12, 2005 at 06:26:37PM -0500, Tom Lane wrote:
> >> No.  Avoiding that would require a new approach to
> >> vacuum-vs-ordinary-indexscan interlocking, so it won't happen until
> >> someone has a Bright Idea (tm).
>
> > Plus there is a TODO to only vacuum pages that are known to have dead
> > tuples, which should hopefully mean no more index-scans during vacuum as
> > well.
>
> No such luck.  You delete any tuples, you need to scan the indexes.

Even though you can see what the index values were for the now-dead
tuple?
--
Jim C. Nasby, Sr. Engineering Consultant      jnasby@pervasive.com
Pervasive Software      http://pervasive.com    work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf       cell: 512-569-9461