Re: [PATCHES] Better default_statistics_target

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От Kevin Grittner
Тема Re: [PATCHES] Better default_statistics_target
Дата
Msg-id 47A18D07.EE98.0025.0@wicourts.gov
обсуждение исходный текст
Ответ на Re: [PATCHES] Better default_statistics_target  ("Christopher Browne" <cbbrowne@gmail.com>)
Ответы Re: [PATCHES] Better default_statistics_target  ("Heikki Linnakangas" <heikki@enterprisedb.com>)
Re: [PATCHES] Better default_statistics_target  (Robert Treat <xzilla@users.sourceforge.net>)
Список pgsql-hackers
>>> On Wed, Jan 30, 2008 at  8:13 PM, in message
<d6d6637f0801301813n64fa58eu76385cf8a621907@mail.gmail.com>, "Christopher
Browne" <cbbrowne@gmail.com> wrote:
> There seems to be *plenty* of evidence out there that the performance
> penalty would NOT be "essentially zero."
I can confirm that I have had performance tank because of boosting
the statistics target for selected columns.  It appeared to be time
spent in the planning phase, not a bad plan choice.  Reducing the
numbers restored decent performance.
-Kevin




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