From: Rob Sargent <robjsargent@gmail.com>
To: Andres Freund <andres@anarazel.de>
Cc: pgsql-generallists.postgresql.org <pgsql-general@lists.postgresql.org>
Cc: pgsql-performance@lists.postgresql.org <pgsql-performance@lists.postgresql.org>
Subject: Re: amazon aroura config - seriously overcommited defaults? (May be Off Topic)
Date: Sat, 8 Dec 2018 15:23:19 -0800
Message-ID: <7AF20599-CCD4-43D9-962D-3EB7B3E25122@gmail.com> (raw)
In-Reply-To: <20181208231242.t66zpocct36m4o46@alap3.anarazel.de>
References: <a053cc2d-bf74-cd33-09e1-024b7e87b494@yahoo.com>
<51a1e143-a679-d525-90a1-3fa8abecaf00@amazon.com>
<20181208231242.t66zpocct36m4o46@alap3.anarazel.de>
> On Dec 8, 2018, at 3:12 PM, Andres Freund <andres@anarazel.de> wrote:
>
> On 2018-12-08 12:06:23 -0800, Jeremy Schneider wrote:
>> On RDS PostgreSQL, the default is 25% of your server memory. This seems
>> to be pretty widely accepted as a good starting point on PostgreSQL.
>
> FWIW, I think it's widely cited, but also bad advice. 25% for a OLTP
> workload on a 1TB machine with a database size above 25% is a terrible
> idea.
>
Sorry, could you please expand “database size above 25%”? 25% of what?
rjs
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Cc: robjsargent@gmail.com, andres@anarazel.de, pgsql-general@lists.postgresql.org, pgsql-performance@lists.postgresql.org
Subject: Re: amazon aroura config - seriously overcommited defaults? (May be Off Topic)
In-Reply-To: <7AF20599-CCD4-43D9-962D-3EB7B3E25122@gmail.com>
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