Re: Displaying accumulated autovacuum cost

On Thu, Aug 18, 2011 at 10:54 AM, Peter Eisentraut <peter_e@gmx.net> wrote:
> On tor, 2011-08-18 at 08:39 +0200, Magnus Hagander wrote:
>> Also, unrelated to that, wouldn't this information be interesting for
>> non-autovacuum queries as well?
>
> Last year we were discussing some details on progress reporting, and
> some people suggested that instead of printing a single percentage, we
> should let each type of activity print out whatever metrics it has that
> would allow an experienced DBA to track the progress.  Effectively, this
> is what this patch is trying to do.
>
> So how about adding a column to pg_stat_activity, progress_metrics or
> something like that, and add that information there.

That might be a good way to go.  I don't think we want something like
pg_stat_all_tables for this, because it seems that Greg's use case is
to be able to see how a *particular* autovacuum process is doing
*while it's running*, not to look at aggregate statistics over time.
Putting it in pg_stat_activity would be good for that.

--
Robert Haas
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