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Re: Potential memory usage issue

From: David Brain <dbrain(at)bandwidth(dot)com>
To: Bill Moran <wmoran(at)collaborativefusion(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Potential memory usage issue
Date: 2007-03-22 16:30:22
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-performance
Bill Moran wrote:

> Install the pg_bufferstats contrib module and take a look at how shared
> memory is being use.  I like to use MRTG to graph shared buffer usage
> over time, but you can just do a SELECT count(*) WHERE NOT NULL to see
> how many buffers are actually in use.

Can you explain what you'd use as a diagnostic on this - I just 
installed the module - but I'm not entirely clear as to what the output 
is actually showing me and/or what would be considered good or bad.


David Brain -

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