From: Frank Wiles <frank@wiles.org>
To: Carl Youngblood <carl@youngbloods.org>
Cc: pgsql-performance@postgresql.org
Subject: Re: Beginner optimization questions, esp. regarding
Date: Tue, 15 Aug 2006 14:08:06 -0500
Message-ID: <20060815140806.8c73ef5f.frank@wiles.org> (raw)
In-Reply-To: <e5ed7b690608151147o7f65132do3b9d301f8b2ebc65@mail.gmail.com>
References: <e5ed7b690608092100v43590a8epdbdec7afa847c722@mail.gmail.com>
<44DAFB2B.4070307@archonet.com>
<20060815150529.GO27928@pervasive.com>
<e5ed7b690608151147o7f65132do3b9d301f8b2ebc65@mail.gmail.com>
On Tue, 15 Aug 2006 12:47:54 -0600
"Carl Youngblood" <carl@youngbloods.org> wrote:
> I tried setting it to 2GB and postgres wouldn't start. Didn't
> investigate in much greater detail as to why it wouldn't start, but
> after switching it back to 1GB it started fine.
>
> On 8/15/06, Jim C. Nasby <jnasby@pervasive.com> wrote:
> > See the recent thread about how old rules of thumb for
> > shared_buffers are now completely bunk. With 4G of memory, setting
> > shared_buffers to 2G could easily be reasonable. The OP really
> > needs to test several different values with their actual workload
> > and see what works best.
Sounds like you need to increase your kernel's maximum amount
of shared memory. This is typically why an increase in
shared_buffers causes PostgreSQL not to start.
Check out this page in the docs for more information:
http://www.postgresql.org/docs/8.1/static/kernel-resources.html
---------------------------------
Frank Wiles <frank@wiles.org>
http://www.wiles.org
---------------------------------
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: frank@wiles.org, carl@youngbloods.org
Subject: Re: Beginner optimization questions, esp. regarding
In-Reply-To: <20060815140806.8c73ef5f.frank@wiles.org>
* 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