Re: "set primary keys..." is missing when using hight values fortransactions / scaling factor with pgbench

Поиск
Список
Период
Сортировка
От Elvir Kurić
Тема Re: "set primary keys..." is missing when using hight values fortransactions / scaling factor with pgbench
Дата
Msg-id CACmNJCHUKNZdPbh7u58niE4EUK8DGATs0ikO4KytjBWpideHog@mail.gmail.com
обсуждение исходный текст
Ответ на Re: "set primary keys..." is missing when using hight values fortransactions / scaling factor with pgbench  (David Rowley <david.rowley@2ndquadrant.com>)
Список pgsql-performance
Дерево обсуждения
thank you David.

I first run initialize step

$  pgbench -i -s 8000 sampledb

and then run step

$ pgbench -c 10 -j 2 -t 8000 sampledb

if I change -s/-t to lower value , eg, 100 above commands will show

--
set primary keys...
done.
-- -
I am not getting it ,why it fails when I rise -t/-s to 8000 - with same commands.

Do you suggest that above is not correct way?




On Tue, Jun 26, 2018 at 2:41 PM, David Rowley <david.rowley@2ndquadrant.com> wrote:
On 27 June 2018 at 00:21, Elvir Kurić <elvirkuric@gmail.com> wrote:
> I have strange issue with pgbench where it fails to execute step to create
> primary keys when I specify scaling factor / transactions to some reasonable
> high value - eg. 8k.

The primary keys are only created in -i mode, which can't be used in
conjunction with the options you've mentioned.

pgbench will perform a vacuum before an actual test run, so perhaps
that's what you're seeing.  You may also have noticed it also didn't
perform the create tables and data population too without -i.


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

В списке pgsql-performance по дате отправления:

Предыдущее
От: David Rowley
Дата:
Сообщение: Re: "set primary keys..." is missing when using hight values fortransactions / scaling factor with pgbench
Следующее
От: David Wheeler
Дата:
Сообщение: Queue table that quickly grows causes query planner to choose poor plan