Re: exposing wait events for non-backends (was: Tracking wait event for latches)

On Mon, Dec 12, 2016 at 11:19 AM, Robert Haas <robertmhaas@gmail.com> wrote:
> So, one of the problems in this patch as committed is that for any
> process that doesn't show up in pg_stat_activity, there's no way to
> see the wait event information.  That sucks.  I think there are
> basically two ways to fix this:
>
> 1. Show all processes that have a PGPROC in pg_stat_activity,
> including auxiliary processes and whatnot, and use some new field in
> pg_stat_activity to indicate the process type.
>
> 2. Add a second view, say pg_stat_system_activity, to show the
> processes that don't appear in pg_stat_activity.  A bunch of columns
> could likely be omitted, but there would be some duplication, too.
>
> Preferences?

And now I'm noticing that Michael Paquier previously started a thread
on this problem which I failed to note before starting this one:

http://postgr.es/m/CAB7nPqSYN05rGsYCTahxTz+2hBikh7=m+hr2JTXaZv_Ei=qJAg@mail.gmail.com

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company