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Re: How to track number of connections and hosts to Postgres cluster

From:	Guillaume Lelarge <guillaume(at)lelarge(dot)info>
To:	Venkat Balaji <venkat(dot)balaji(at)verse(dot)in>
Cc:	Adarsh Sharma <adarsh(dot)sharma(at)orkash(dot)com>, pgsql-performance(at)postgresql(dot)org
Subject:	Re: How to track number of connections and hosts to Postgres cluster
Date:	2011-08-24 12:16:57
Message-ID:	1314188217.2193.18.camel@localhost.localdomain
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On Wed, 2011-08-24 at 16:51 +0530, Venkat Balaji wrote:
> But, the information vanishes if the application logs off.
>

That's why you need a tool to track this.

> I am looking for an alternative to track the total amount of the connections
> with the host IPs through a Cron job.
>

If you only want the number of connections, you can check_postgres.
> What could be the frequency of cron ?
>

I don't think you can go below one second.

> I know the best is using log_connections and log_disconnections parameters,
> but, information logged would be too high and is also IO intensive.
>

Sure. But if you want connection duration, that's the only way.

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