Re: Rename max_parallel_degree?

Petr Jelinek <petr@2ndquadrant.com>

From: Petr Jelinek <petr@2ndquadrant.com>

To: "David G. Johnston" <david.g.johnston@gmail.com>

Cc: Jim Nasby <Jim.Nasby@bluetreble.com>, Robert Haas <robertmhaas@gmail.com>, Tom Lane <tgl@sss.pgh.pa.us>, Alvaro Herrera <alvherre@2ndquadrant.com>, Josh berkus <josh@agliodbs.com>, Peter Eisentraut <peter.eisentraut@2ndquadrant.com>, Peter Geoghegan <pg@heroku.com>, Noah Misch <noah@leadboat.com>, David Rowley <david.rowley@2ndquadrant.com>, Amit Kapila <amit.kapila16@gmail.com>, Magnus Hagander <magnus@hagander.net>, Bruce Momjian <bruce@momjian.us>, PostgreSQL-development <pgsql-hackers@postgresql.org>

Date: 2016-06-03T04:21:08Z

Lists: pgsql-hackers

On 01/06/16 17:55, David G. Johnston wrote:
> On Wed, Jun 1, 2016 at 11:45 AM, Petr Jelinek <petr@2ndquadrant.com
> <mailto:petr@2ndquadrant.com>>wrote:
>
>     That GUC also controls worker processes that are started by
>     extensions, not just ones that parallel query starts. This is btw
>     one thing I don't like at all about how the current limits work, the
>     parallel query will fight for workers with extensions because they
>     share the same limit.
>
>
> Given that this models reality the GUC is doing its job.  Now, maybe we
> need additional knobs to give the end-user the ability to influence how
> those fights will turn out.

Agreed, my point is that I think we do need additional knob.

-- 
   Petr Jelinek                  http://www.2ndQuadrant.com/
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