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Re: [performance] fast reads on a busy server

From: Hannu Krosing <hannu(at)2ndQuadrant(dot)com>
To: Willy-Bas Loos <willybas(at)gmail(dot)com>
Cc: pgsql-cluster-hackers(at)postgresql(dot)org, pgsql-performance(at)postgresql(dot)org
Subject: Re: [performance] fast reads on a busy server
Date: 2012-06-27 07:34:16
Message-ID: 1340782456.12666.45.camel@hvost (view raw or flat)
Thread:
Lists: pgsql-cluster-hackerspgsql-performance
On Wed, 2012-06-27 at 00:16 +0200, Willy-Bas Loos wrote:
> Hi,
> 
> I've read this:
> http://wiki.postgresql.org/wiki/Prioritizing_databases_by_separating_into_multiple_clusters
> 
> But it doesn't really say anything about memory.
> If i can fit an extra cluster into it's shared buffer, it should have
> fast reads, right?
> Even if i don't have seperate spindles and the disks are busy.

Check if you are CPU-bound. On a database which fits fully you may
already be.

> This is on a Debain server, postgres 8.4

And if possible, upgrade to latest pg (9.1). On some operations this
already may give you a considerable performance boost

> Cheers,
> 
> WBL
> -- 
> "Quality comes from focus and clarity of purpose" -- Mark Shuttleworth
> 

-- 
-------
Hannu Krosing
PostgreSQL Unlimited Scalability and Performance Consultant
2ndQuadrant Nordic
PG Admin Book: http://www.2ndQuadrant.com/books/


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