From: Shaun Thomas <sthomas@optionshouse.com>
To: Tory M Blue <tmblue@gmail.com>
Cc: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: Postgresql.conf file from like 7.x to 9.2
Date: Wed, 10 Apr 2013 16:42:14 -0500
Message-ID: <5165DCB6.9000705@optionshouse.com> (raw)
In-Reply-To: <CAEaSS0ZfXb-CFEQmaEWqnFE29n2b8=00+7FQq8qiBqW7C0W6vQ@mail.gmail.com>
References: <CAEaSS0ZfXb-CFEQmaEWqnFE29n2b8=00+7FQq8qiBqW7C0W6vQ@mail.gmail.com>
List-Unsubscribe: <mailto:majordomo@postgresql.org?body=unsub%20pgsql-performance>
On 04/10/2013 04:25 PM, Tory M Blue wrote:
> Is there an easy/clean way to adapt my old config file to the new stuff,
> I'm not sure what all has changed, so wondering if I just have to go
> line by line and somehow consolidate old to new, area there any tools or
> mechanism to do so?
Ehhh, at that point, it's probably best to just start over. we took the
annotated postgresql.conf and reevaluated each setting and compared it
to similar/same settings in our old config. Then we made a file of
*just* the stuff we changed, and made that the postgresql.conf, and keep
the annotated version around as defaults.conf to use as a reference.
That makes it a lot easier to copy between versions or incorporate
new/modified settings.
Of course, all this will probably be moot when 9.3 comes out, as I
believe it has the ability to include configuration fragments. Probably
another good opportunity to clean up your configs.
We jumped from 8.2 to 9.1 in a single upgrade, so while not quite as
wide as going from 7.x to 9.2, you could probably benefit from a reeval.
The fundamental settings are pretty much the same, so far as I know.
Settings we always change:
shared_buffers
work_mem
maintenance_work_mem
default_statistics_target
effective_cache_size
random_page_cost
archive_mode
archive_command
archive_timeout
log_checkpoints
log_min_duration_statement
Settings we usually tweak:
autovacuum_vacuum_scale_factor
autovacuum_analyze_scale_factor
autovacuum_freeze_max_age
Settings that are new, and could assist in setting up streaming or backups:
wal_level
max_wal_senders
People are getting more and more vocal about increasing cpu_tuple_cost,
as the default is apparently too low in practice.
Everything else? Salt to taste.
--
Shaun Thomas
OptionsHouse | 141 W. Jackson Blvd. | Suite 500 | Chicago IL, 60604
312-676-8870
sthomas@optionshouse.com
______________________________________________
See http://www.peak6.com/email_disclaimer/ for terms and conditions related to this email
--
Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-performance
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-performance@postgresql.org
Cc: sthomas@optionshouse.com, tmblue@gmail.com
Subject: Re: Postgresql.conf file from like 7.x to 9.2
In-Reply-To: <5165DCB6.9000705@optionshouse.com>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox