Re: proposal: Set effective_cache_size to greater of .conf value, shared_buffers

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От Robert Haas
Тема Re: proposal: Set effective_cache_size to greater of .conf value, shared_buffers
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Msg-id CA+TgmoaFQ7R-=SJQcNtb+qSNs4e3ZCB9z3wuLsubBw_HyF88uQ@mail.gmail.com
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Ответ на Re: proposal: Set effective_cache_size to greater of .conf value, shared_buffers  (Andres Freund <andres@2ndQuadrant.com>)
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On Wed, May 7, 2014 at 10:12 AM, Andres Freund <andres@2ndquadrant.com> wrote:
> On 2014-05-07 10:07:07 -0400, Tom Lane wrote:
>> In the meantime, it seems like there is an emerging consensus that nobody
>> much likes the existing auto-tuning behavior for effective_cache_size,
>> and that we should revert that in favor of just increasing the fixed
>> default value significantly.  I see no problem with a value of say 4GB;
>> that's very unlikely to be worse than the pre-9.4 default (128MB) on any
>> modern machine.
>>
>> Votes for or against?
>
> +1 for increasing it to 4GB and remove the autotuning. I don't like the
> current integration into guc.c much and a new static default doesn't
> seem to be worse than the current autotuning.

It was my proposal originally, so I assume I'd be counted as in favor,
but for the sake of clarity: +1.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company



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