| From: | Rob Sargent <robjsargent(at)gmail(dot)com> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | "pgsql-generallists(dot)postgresql(dot)org" <pgsql-general(at)lists(dot)postgresql(dot)org>, "pgsql-performance(at)lists(dot)postgresql(dot)org" <pgsql-performance(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: amazon aroura config - seriously overcommited defaults? (May be Off Topic) |
| Date: | 2018-12-08 23:23:19 |
| Message-ID: | 7AF20599-CCD4-43D9-962D-3EB7B3E25122@gmail.com |
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| Thread: | |
| Lists: | pgsql-general pgsql-performance |
> On Dec 8, 2018, at 3:12 PM, Andres Freund <andres(at)anarazel(dot)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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