From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
---|---|
To: | Daniel Farina <daniel(at)heroku(dot)com> |
Cc: | pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Modeling consumed shmem sizes, and some thorns |
Date: | 2012-05-03 09:23:31 |
Message-ID: | CA+U5nM+QCoahQ23hFx-WmqLCfHyAJFWrn-U0Eh5Z_jwpHSVfrw@mail.gmail.com |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-hackers |
On Wed, May 2, 2012 at 9:38 PM, Daniel Farina <daniel(at)heroku(dot)com> wrote:
> Besides accuracy, there is a thornier problem here that has to do with
> hot standby (although the use case is replication more generally) when
> one has heterogeneously sized database resources. As-is, it is
> required that locking-related structures -- max_connections,
> max_prepared_xacts, and max_locks_per_xact (but not predicate locks,
> is that an oversight?) must be a larger number on a standby than on a
> primary.
>= not >
so you can use the same values on both sides
Predicate locks aren't set in recovery so the value isn't checked as a
required parameter value.
--
Simon Riggs http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
From | Date | Subject | |
---|---|---|---|
Next Message | Daniel Farina | 2012-05-03 09:33:06 | Re: Modeling consumed shmem sizes, and some thorns |
Previous Message | Simon Riggs | 2012-05-03 09:11:56 | Re: Temporary tables under hot standby |