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Re: Hot standby having high requested checkpoints?

From: Brian Fehrle <brianf(at)consistentstate(dot)com>
To: pgsql-admin(at)postgresql(dot)org
Subject: Re: Hot standby having high requested checkpoints?
Date: 2012-02-29 15:14:45
Message-ID: 4F4E40E5.9040006@consistentstate.com (view raw or flat)
Thread:
Lists: pgsql-admin
I am taking periodic snapshots from the system view 'pg_stat_bgwriter' 
from both the master and the hot standby.

- Brian F

On 02/28/2012 09:22 PM, Fujii Masao wrote:
> On Wed, Feb 29, 2012 at 7:53 AM, Brian Fehrle
> <brianf(at)consistentstate(dot)com>  wrote:
>> Hi all,
>>
>> I have two PostgreSQL 9.0.5 clusters, one is a master and the other is a hot
>> standby via streaming replication. I'm monitoring some stats on each and I'm
>> noticing something very odd. On the master, I get between 2 and 4 requested
>> checkpoints per hour, but on the hot standby I'm seeing between 200 and 300
>> requested checkpoints per hour.
> How did you get that information? Enable log_checkpoints?
>
> Regards,
>


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