Re: Turning off HOT/Cleanup sometimes

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От Andres Freund
Тема Re: Turning off HOT/Cleanup sometimes
Дата
Msg-id 20140929110721.GF4716@alap3.anarazel.de
обсуждение исходный текст
Ответ на Re: Turning off HOT/Cleanup sometimes  (Andres Freund <andres@anarazel.de>)
Ответы Re: Turning off HOT/Cleanup sometimes  (Alvaro Herrera <alvherre@2ndquadrant.com>)
Список pgsql-hackers
On 2014-09-29 11:31:11 +0200, Andres Freund wrote:
> On 2014-09-29 11:13:43 +0200, Andres Freund wrote:
> > I doubt it'll be hard to construct a case where it'll show. My first try
> > of using a pgbench scale 100, -M prepared, -cj8 with a custom file with
> > 1 write and 5 read transaction yielded the following on my laptop:
>
> Hm. On second thought that testcase probably *decreased* the bad effects
> of this because pgbench's readonly statements only touch one table...

I've attached the file nonetheless, for posterities sake.

Note it has the scale hardcoded...

Greetings,

Andres Freund

--
 Andres Freund                       http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services

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