"Greg Smith" <gsmith@gregsmith.com> writes:
> On Thu, 28 Jun 2007, Ho Fat Tsang wrote:
>
>> I have tuned the checkpoint_timeout to 30 second which is ten times less than
>> default and the issue is still reproduced.
>
> Your problem looks exactly like a pause at every checkpoint, and I'm not
> sure what Richard was thinking when he suggested having them more often
> would improve things.
Having frequent checkpoints is bad for overall performance but should reduce
the severity of the checkpoint impact. I interpreted his comment as saying he
lowered it just as an experiment to test if it was checkpoint causing the
problems not as a permanent measure.
--
Gregory Stark
EnterpriseDB http://www.enterprisedb.com