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