From: Jim C. Nasby <jnasby@pervasive.com>
To: Carl Youngblood <carl@youngbloods.org>
Cc: pgsql-performance@postgresql.org
Subject: Re: Beginner optimization questions, esp. regarding Tsearch2
Date: Tue, 15 Aug 2006 14:21:46 -0500
Message-ID: <20060815192145.GI21363@pervasive.com> (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, Aug 15, 2006 at 12:47:54PM -0600, Carl Youngblood 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.
Most likely because you didn't set the kernel's shared memory settings
high enough.
To answer you other question:
http://archives.postgresql.org/pgsql-performance/2006-08/msg00095.php> 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.
>
> ---------------------------(end of broadcast)---------------------------
> TIP 1: if posting/reading through Usenet, please send an appropriate
> subscribe-nomail command to majordomo@postgresql.org so that your
> message can get through to the mailing list cleanly
>
--
Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
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: jnasby@pervasive.com, carl@youngbloods.org
Subject: Re: Beginner optimization questions, esp. regarding Tsearch2
In-Reply-To: <20060815192145.GI21363@pervasive.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