Re: statement stats extra load?

From: Alan McKay <alan(dot)mckay(at)gmail(dot)com>
To: "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org>
Subject: Re: statement stats extra load?
Date: 2009-09-22 13:19:44
Message-ID: 844129e80909220619g33e61f54u8eb5dcf51ec74e18@mail.gmail.com
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On Tue, Sep 22, 2009 at 2:42 AM, Magnus Hagander <magnus(at)hagander(dot)net> wrote:
> That's not true at all.
>
> If you have many relations in your cluster that have at some point been
> touched, the starts collector can create a *significant* load on the I/o
> system. I've come across several cases where the only choice was to disable
> the collector completely, even given all the drawbacks from that.

Thanks Magnus, I thought that other response sounded a bit fanciful :-)

So is there any way to predict the load this will have? Or just try
it and hope for the best? :-)

Right now on our 8.3 system it is off and we'd like to turn it on

--
“Don't eat anything you've ever seen advertised on TV”
- Michael Pollan, author of "In Defense of Food"

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