| From: | Julien Rouhaud <rjuju123(at)gmail(dot)com> |
|---|---|
| To: | Bruce Momjian <bruce(at)momjian(dot)us> |
| Cc: | Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>, Kyotaro Horiguchi <horikyota(dot)ntt(at)gmail(dot)com>, Magnus Hagander <magnus(at)hagander(dot)net>, Fujii Masao <masao(dot)fujii(at)oss(dot)nttdata(dot)com>, Michael Paquier <michael(at)paquier(dot)xyz>, Andres Freund <andres(at)anarazel(dot)de>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Stephen Frost <sfrost(at)snowman(dot)net>, Christoph Berg <myon(at)debian(dot)org>, Peter Eisentraut <peter(dot)eisentraut(at)enterprisedb(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: compute_query_id and pg_stat_statements |
| Date: | 2021-05-14 14:27:49 |
| Message-ID: | 20210514142749.gaa26fk2txh7pwtx@nol |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Fri, May 14, 2021 at 08:57:41AM -0400, Bruce Momjian wrote:
> On Fri, May 14, 2021 at 08:35:14AM -0400, Bruce Momjian wrote:
> > On Thu, May 13, 2021 at 09:41:42PM -0400, Bruce Momjian wrote:
> > > I think if we keep the output as 'auto', and document that you check
> > > pg_stat_activity for a hash to see if it is enabled, that gets us pretty
> > > far.
> >
> > I think keeping the output as 'auto', and documenting that this query
> > must be run to determine if the query id is being computed:
> >
> > SELECT query_id
> > FROM pg_stat_activity
> > WHERE pid = pg_backend_pid();
> >
> > is the right approach.
>
> Actually, we talked about huge_pages = try needing to use OS commands to
> see if huge pages are being used, so requiring an SQL query to see if
> query id is being computed seems reasonable.
I totally agree.
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