Re: pg_autovacuum (pg_avd version 2)

I can help you with any server-side issues --- it is probably easiest
via chat. My chat addresses are:

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Matthew T. O'Connor wrote:
> Right. I am trying to work on server-side solution but can't promise to
> complete it by June 1. If I (or someone else) gets a server-side
> solution done before the 7.4 feature freeze, then I think we should pull
> this out of /contrib. Otherwise, I find it a useful tool, I have it
> running in production and have received some positive feedback from
> others who are using it, so /contrib seems safe enough.
>
> On Tue, 2003-03-18 at 17:19, Bruce Momjian wrote:
> > We did, but he contacted me directly asking if it could be put in
> > /contrib for 7.4 so it would get some testing and usage. Is that valid?
> >
> > ---------------------------------------------------------------------------
> >
> > Peter Eisentraut wrote:
> > > Did we not tend in the direction of a server-side solution?
> > >
> > > Bruce Momjian writes:
> > >
> > > > Your patch has been added to the PostgreSQL unapplied patches list at:
> > > >
> > > > http://momjian.postgresql.org/cgi-bin/pgpatches
> > > >
> > > > I will try to apply it within the next 48 hours.
> > > >
> > > > ---------------------------------------------------------------------------
> > > >
> > > >
> > > > Matthew T. O'Connor wrote:
> > > > > I have updated my pg_autovacuum program (formerly pg_avd, the name
> > > > > changed as per discussion on the patches list).
> > > > >
> > > > > This version should be a good bit better. It addresses all the issues
> > > > > pointed out by Neil Conway. Vacuum and Analyze are now handled
> > > > > separately. It now monitors for xid wraparound. The number of database
> > > > > connections and queries has been significantly reduced compared the
> > > > > previous version. I have moved it from bin to contrib. More detail on
> > > > > the changes are in the TODO file.
> > > > >
> > > > > I have not tested the xid wraparound code as I have to let my AthlonXP
> > > > > 1600 run select 1 in a tight loop for approx. two days in order to
> > > > > perform the required 500,000,000 xacts.
> > > > >
> > > > > Side note: in trying to test the xid wrap around code I noted that the
> > > > > select 1 query is nearly 30% slower with stats_row_level = true. I
> > > > > guess this is another reason for a backend integrated autovacuum that
> > > > > not built on top of the stats system. I know the net effect is reduced
> > > > > with more realistic queries but still seems like a lot.
> > > > >
> > > > > As always, any and all feedback is appreciated.
> > > > >
> > > > > Matthew T. O'Connor
> > > > >
> > > > >
> > > >
> > > > [ Attachment, skipping... ]
> > > >
> > > > >
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> > > >
> > >
> > > --
> > > Peter Eisentraut peter_e(at)gmx(dot)net
> > >
> > >
> > > ---------------------------(end of broadcast)---------------------------
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> > >
>
>

--
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