On Mon, Mar 27, 2017 at 11:07 AM, Robert Haas <rh...@postgresql.org> wrote:
> Show more processes in pg_stat_activity.
> Previously, auxiliary processes and background workers not connected
> to a database (such as the logical replication launcher) weren't
> shown.  Include them, so that we can see the associated wait state
> information.  Add a new column to identify the processes type, so that
> people can filter them out easily using SQL if they wish.
> Before this patch was written, there was discussion about whether we
> should expose this information in a separate view, so as to avoid
> contaminating pg_stat_activity with things people might not want to
> see.  But putting everything in pg_stat_activity was a more popular
> choice, so that's what the patch does.
> Kuntal Ghosh, reviewed by Amit Langote and Michael Paquier.  Some
> revisions and bug fixes by me.

-   /* Report to pgstat that this process is a WAL sender */
-   pgstat_report_activity(STATE_RUNNING, "walsender");
+   /* Report to pgstat that this process is running */
+   pgstat_report_activity(STATE_RUNNING, NULL);

Perhaps this bit should just be removed? We added it to make the
process show in pg_stat_activity, and with this patch it does show up
even without this call.

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