Re: Avoiding smgrimmedsync() during nbtree index builds

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От Dmitry Dolgov
Тема Re: Avoiding smgrimmedsync() during nbtree index builds
Дата
Msg-id 20220213143313.vhwg5ua6dcevbhlj@erthalion.local
обсуждение исходный текст
Ответ на Re: Avoiding smgrimmedsync() during nbtree index builds  (Melanie Plageman <melanieplageman@gmail.com>)
Список pgsql-hackers
> On Wed, Feb 09, 2022 at 01:49:30PM -0500, Melanie Plageman wrote:
> Hi,
> v5 attached and all email feedback addressed below

Thanks for the patch, it looks quite good.

I don't see it in the discussion, so naturally curious -- why directmgr
is not used for bloom index, e.g. in blbuildempty?

> On Sun, Jan 16, 2022 at 3:26 PM Justin Pryzby <pryzby@telsasoft.com> wrote:
> > Separate from this issue, I wonder if it'd be useful to write a DEBUG log
> > showing when btree uses shared_buffers vs fsync.  And a regression test which
> > first SETs client_min_messages=debug to capture the debug log to demonstrate
> > when/that new code path is being hit.  I'm not sure if that would be good to
> > merge, but it may be useful for now.

I can't find the thread right away, but I vaguely remember a similar
situation where such approach, as a main way to test the patch, had
caused some disagreement. Of course for the development phase it would
be indeed convenient.



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