Re: Displaying accumulated autovacuum cost

On Thu, Aug 18, 2011 at 17:13, Robert Haas <robertmhaas@gmail.com> wrote:
> 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.

It's also good to have it broken down into multiple columns, and not
just a freetext column in the view - if tools should be able to parse
it as well.

-- 
 Magnus Hagander
 Me: http://www.hagander.net/
 Work: http://www.redpill-linpro.com/