From: | Magnus Hagander <magnus(at)hagander(dot)net> |
---|---|
To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
Cc: | Peter Eisentraut <peter_e(at)gmx(dot)net>, Greg Smith <greg(at)2ndquadrant(dot)com>, Euler Taveira de Oliveira <euler(at)timbira(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Displaying accumulated autovacuum cost |
Date: | 2011-08-18 15:14:40 |
Message-ID: | CABUevEwcreQnES93Phbyc=r-8CwuRZJfJYe9aFSYkc-g=b-tRg@mail.gmail.com |
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Lists: | pgsql-hackers |
On Thu, Aug 18, 2011 at 17:13, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
> On Thu, Aug 18, 2011 at 10:54 AM, Peter Eisentraut <peter_e(at)gmx(dot)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/
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