Re: Fix checkpoint skip logic on idle systems by tracking LSN progress

From: Michael Paquier <michael(dot)paquier(at)gmail(dot)com>
To: Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>
Cc: amit(dot)kapila16(at)gmail(dot)com, david(at)pgmasters(dot)net, PostgreSQL mailing lists <pgsql-hackers(at)postgresql(dot)org>, a(dot)korotkov(at)postgrespro(dot)ru
Subject: Re: Fix checkpoint skip logic on idle systems by tracking LSN progress
Date: 2016-11-21 05:41:27
Message-ID: CAB7nPqSetnFjhGAB+tE2M68Vc_3BwbsEPe+dCMB8xnH0UYw3aA@mail.gmail.com
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On Mon, Nov 21, 2016 at 1:31 PM, Kyotaro HORIGUCHI
<horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp> wrote:
> So, all my original concern were cleared.

Cool. Perhaps this could be marked as ready for committer then?

> The last one is
> resetting by a checkpointer restart.. I'd like to remove that if
> Andres agrees.

Could you clarify this point? v18 makes sure that the last segment
switch stays in shared memory so as we could still skip the activity
of archive_timeout correctly.
--
Michael

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