Re: Effective IO Concurrency

From: Ron <ronljohnsonjr(at)gmail(dot)com>
To: pgsql-general(at)lists(dot)postgresql(dot)org
Subject: Re: Effective IO Concurrency
Date: 2020-09-14 16:10:23
Message-ID: 4637f0e5-d3fa-2ff3-64e8-3835ec67e67c@gmail.com
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On 9/14/20 11:03 AM, Laurenz Albe wrote:
> On Mon, 2020-09-14 at 10:39 -0300, luis(dot)roberto(at)siscobra(dot)com(dot)br wrote:
>> In PostgreSQL 13, the way of using effective_io_concurrency has changed. Until v12,
>> I used 200 for this value (using SSD drives). Using the new formula described in
>> https://www.postgresql.org/docs/13/release-13.html gives me 1176.
>> However, in the documentation https://www.postgresql.org/docs/13/runtime-config-resource.html#GUC-EFFECTIVE-IO-CONCURRENCY
>> it says that the maximum value allowed is 1000.
> Then use the value 1000...

I think he means that the formula should take that into account.

--
Angular momentum makes the world go 'round.

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