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Re: Hot standby having high requested checkpoints?

From: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>
To: Brian Fehrle <brianf(at)consistentstate(dot)com>
Cc: pgsql-admin(at)postgresql(dot)org
Subject: Re: Hot standby having high requested checkpoints?
Date: 2012-03-01 02:17:59
Message-ID: CAHGQGwFQ-4CFX_0APMSDjFse+c8vGs_-SVbF04ydXcid+0-tJQ@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-admin
On Thu, Mar 1, 2012 at 12:14 AM, Brian Fehrle
<brianf(at)consistentstate(dot)com> wrote:
> I am taking periodic snapshots from the system view 'pg_stat_bgwriter' from
> both the master and the hot standby.

You mean that you observed that pg_stat_bgwriter.checkpoints_timed in
the standby was larger than that in the master? I ran pgbench on streaming
replication and checked pg_stat_bgwriter, but I could not reproduce the
problem you encountered. pg_stat_bgwriter.checkpoints_timed in the
standby was equal to or one more than that in the master. Could you tell me
the self-contained test case?

Regards,

-- 
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center

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