Re: LDC - Load Distributed Checkpoints with PG8.3b2 on Solaris

From: "Jignesh K(dot) Shah" <J(dot)K(dot)Shah(at)Sun(dot)COM>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: LDC - Load Distributed Checkpoints with PG8.3b2 on Solaris
Date: 2007-11-13 16:57:00
Message-ID: 4739D75C.1050407@sun.com
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I am running EAStress workload.. which doesnt do manual checkpoints as
far as I know..

I will turn on checkpoint_logging to get more idea as Heikki suggested

thanks.

-Jignesh

Tom Lane wrote:
> "Jignesh K. Shah" <J(dot)K(dot)Shah(at)Sun(dot)COM> writes:
>
>> I am running tests with PG8.3b2 on Solaris 10 8/07 and I still see IO
>> flood when checkpoint happens.
>>
>
> I am thinking that you are probably trying to test that by issuing
> manual CHECKPOINT commands. A manual checkpoint is still done at full
> speed, as are shutdown checkpoints. You need to study the behavior of
> automatic (background) checkpoints, instead.
>
> regards, tom lane
>

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