Re: checkpoint_timeout

The server is running Postgres 8.2.4

When the server is doing too much operations like I, U or D the postgres stop a while each 5 min...!

I mean "stopping" that I don't receive any response from postgres, and the process the all people are running stay there, waiting for something.

I read a several names to it like: gap, stall, slowdown... I don't know the write expression for this situation.

I hope you can help me.

Thnks,

Rafael Domiciano

Postgres DBA

2008/10/7 <chirag.dave@gmail.com>

What version of postgres are you running ?  and please also provide more information about your suspected slowdown ?

On Tue, Oct 7, 2008 at 4:21 PM, Rafael Domiciano <rafael.domiciano@gmail.com> wrote:

Hello there,

I'm having some slowndowns in my postgresql server, and I had been reading something about checkpoints, that could resolve my problem.

Now, I have:

checkpoint_segments = 30                # in logfile segments, min 1, 16MB each

#checkpoint_timeout = 5min 

And I percebed that this slowndown is occuring for 5 min...! So I'm suposing that the problem is in the checkpoint_timeout.

What's the impact to chang it to:

checkpoint_timeout = 2min or

checkpoint_timeout = 5min

Tnhks,

Rafael Domiciano