Re: What does "[backends] should seldom or never need to wait for a write to occur" mean?

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От Bruce Momjian
Тема Re: What does "[backends] should seldom or never need to wait for a write to occur" mean?
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Msg-id 20201111232417.GH25840@momjian.us
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Ответ на Re: What does "[backends] should seldom or never need to wait for a write to occur" mean?  (Chris Wilson <chris+google@qwirx.com>)
Ответы Re: What does "[backends] should seldom or never need to wait for a write to occur" mean?
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On Wed, Nov 11, 2020 at 11:29:09AM +0000, Chris Wilson wrote:
> I still believe that my original proposed change, to "This reduces the chances
> that a backend needing an empty buffer must [itself] write a dirty one back to
> disk before evicting it" (with one extra word added), resolves the ambiguity
> and also more clearly and directly focuses it on what the bgwriter does and
> why, making it better documentation. It might be incorrect if my understanding
> is incorrect - is it?

You make some very good points.  Here is an updated patch.

-- 
  Bruce Momjian  <bruce@momjian.us>        https://momjian.us
  EnterpriseDB                             https://enterprisedb.com

  The usefulness of a cup is in its emptiness, Bruce Lee


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