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Re: Enhancement request

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>
Cc: "Jonah H(dot) Harris" <jonah(dot)harris(at)gmail(dot)com>, "Campbell, Lance" <lance(at)uiuc(dot)edu>, "posgres support" <pgsql-admin(at)postgresql(dot)org>
Subject: Re: Enhancement request
Date: 2007-12-01 03:44:18
Message-ID: 10684.1196480658@sss.pgh.pa.us (view raw or flat)
Thread:
Lists: pgsql-admin
"Joshua D. Drake" <jd(at)commandprompt(dot)com> writes:
> Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> So: show me a use case for this that will still make sense in a
>> mostly-autovacuum world.

> I think you are living in a different world than I am if you think it
> is a mostly-autovacuum world.

Certainly it isn't a mostly-autovacuum world in 8.2 or earlier releases,
but that's irrelevant to whether it makes sense to expend effort on a
feature that would appear (at the earliest) in 8.4.  Autovac in 8.3 is
very significantly ahead of where it was in 8.2 --- to the point that
we've turned it on by default --- and I predict that the pressure of
being on by default will really light the afterburners behind its
development.  I think it's entirely likely that by the time 8.4 is
ready, it will be perfectly fair to characterize manual vacuuming
as a buggy-whip technology, at least for all but the
three-sigmas-above-normal users.  And I'd *much* rather see development
effort going into making that vision come true, than into adding
questionably-useful complexity in the support for manual vacuuming.

			regards, tom lane

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