Re: strange pgbench results (as if blocked at the end) - Mailing list pgsql-performance

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Subject Re: strange pgbench results (as if blocked at the end)
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Msg-id 37b2e83f52518f7e9bf01bcc97b622bf@mail.gransy.com
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In response to Re: strange pgbench results (as if blocked at the end)  (Scott Marlowe <scott.marlowe@gmail.com>)
List pgsql-performance
On Sun, 14 Aug 2011 07:15:00 -0600, Scott Marlowe
<scott.marlowe@gmail.com> wrote:
> On Sun, Aug 14, 2011 at 6:51 AM,  <tv@fuzzy.cz> wrote:
>>
>> I've increased the test duration to 10 minutes, decreased the
>> checkpoint timeout to 4 minutes and a checkpoint is issued just before
>> the pgbench. That way the starting position should be more or less the
>> same for all runs.
>
> Also look at increasing checkpoint completion target to something
> closer to 1. 0.8 is a nice starting place.

Yes, I've increased that already:

checkpoints_segments=64
checkpoints_completion_target=0.9

Tomas

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