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Re: Configuring PostgreSQL to minimize impact of checkpoints

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: jao(at)geophile(dot)com
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Configuring PostgreSQL to minimize impact of checkpoints
Date: 2004-05-10 19:09:32
Message-ID: 200405101909.i4AJ9Wv09415@candle.pha.pa.us (view raw or flat)
Thread:
Lists: pgsql-performance
jao(at)geophile(dot)com wrote:
> 4. I understand that a "background writer" is being contemplated for
> 7.5.  Will that replace or augment the checkpoint process?  Any
> comments on how that work will apply to my problem would be
> appreciated. I wouldn't mind seeing the average performance,
> (without the spikes) go up -- let's say -- 10%, in exchange for
> more uniform performance. These spikes are a real problem.

The background writer is designed to address your specific problem.  We
will stil checkpoint, but the spike should be greatly minimized.

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman(at)candle(dot)pha(dot)pa(dot)us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073

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