Re: Review: Extra Daemons / bgworker

Simon Riggs <simon@2ndquadrant.com>

From: Simon Riggs <simon@2ndQuadrant.com>
To: Markus Wanner <markus@bluegap.ch>
Cc: Alvaro Herrera <alvherre@2ndquadrant.com>, kaigai@kaigai.gr.jp, PostgreSQL-development Hackers <pgsql-hackers@postgresql.org>
Date: 2012-12-03T15:27:31Z
Lists: pgsql-hackers
On 3 December 2012 15:17, Markus Wanner <markus@bluegap.ch> wrote:

>>> Just like av_launcher does it now: set a flag in shared memory and
>>> signal the postmaster (PMSIGNAL_START_AUTOVAC_WORKER).
>>
>> I'm not sure how this works.  What process is in charge of setting such
>> a flag?
>
> The only process that currently starts background workers ... ehm ...
> autovacuum workers is the autovacuum launcher. It uses the above
> Postmaster Signal in autovacuum.c:do_start_autovacuum_worker() to have
> the postmaster launch bg/autovac workers on demand.

My understanding was that the patch keep autovac workers and
background workers separate at this point.

Is there anything to be gained *now* from merging those two concepts?
I saw that as refactoring that can occur once we are happy it should
take place, but isn't necessary.

-- 
 Simon Riggs                   http://www.2ndQuadrant.com/
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