Re: Shared memory usage - Mailing list pgsql-performance

From Max Zorloff
Subject Re: Shared memory usage
Date
Msg-id op.txpy8trnll0p5y@1-rtt202dnf3uds.mshome.net
Whole thread Raw
In response to Re: Shared memory usage  (Adam Tauno Williams <adamtaunowilliams@gmail.com>)
List pgsql-performance
On Mon, 27 Aug 2007 14:21:43 +0400, Adam Tauno Williams
<adamtaunowilliams@gmail.com> wrote:

>> I have a postgres 8.0 and ~400mb database with lots of simple selects
>> using indexes.
>> I've installed pgpool on the system. I've set num_init_children to 5 and
>> here is the top output.
>> One of postmasters is my demon running some insert/update tasks. I see
>> that they all use cpu heavily, but do not use the shared memory.
>> shared_buffers is set to 60000, yet they use a minimal part of that. I'd
>> like to know why won't they use more?
>
> This just looks like the output of top;  what is telling you that
> PostgreSQL is not using the shared memory?  Enable statistics collection
> and then look in pg_statio_user_tables.

I have it enabled. How can I tell whether the shared memory is used from
the information in this table?

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