Re: Review: Extra Daemons / bgworker

Markus Wanner <markus@bluegap.ch>

From: Markus Wanner <markus@bluegap.ch>
To: Kohei KaiGai <kaigai@kaigai.gr.jp>
Cc: Alvaro Herrera <alvherre@2ndquadrant.com>, Dimitri Fontaine <dimitri@2ndquadrant.fr>, PostgreSQL-development Hackers <pgsql-hackers@postgresql.org>
Date: 2012-11-30T14:27:47Z
Lists: pgsql-hackers
On 11/30/2012 03:16 PM, Kohei KaiGai wrote:
> This feature does not enforce them to implement with this new framework.
> If they can perform as separate daemons, it is fine enough.

I'm not clear on what exactly you envision, but if a process needs
access to shared buffers, it sounds like it should be a bgworker. I
don't quite understand why that process also wants a libpq connection,
but that's certainly doable.

> But it is not all the cases where we want background workers being tied
> with postmaster's duration.

Not wanting a process to be tied to postmaster's duration is a strong
indication that it better not be a bgworker, I think.

Regards

Markus Wanner