Re: Replication Syatem

From: "Gauri Kanekar" <meetgaurikanekar(at)gmail(dot)com>
To: "Andrew Sullivan" <ajs(at)commandprompt(dot)com>, pgsql-performance(at)postgresql(dot)org
Subject: Re: Replication Syatem
Date: 2008-04-29 05:46:57
Message-ID: 7e4ba9550804282246p73c62fc6y5e7cb7dda55a6b50@mail.gmail.com
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Andrew,

Can you explain me in detail why u said vacuum full is making the things
worst.
We do vacuum full, as vacuum verbose analyse dont regain space for us.

~ Gauri

On Mon, Apr 28, 2008 at 9:52 PM, Andrew Sullivan <ajs(at)commandprompt(dot)com>
wrote:

> On Mon, Apr 28, 2008 at 07:35:37PM +0530, Gauri Kanekar wrote:
> > Peter,
> >
> > We are doing vacuum full every alternate day. We also do vacuum analyze
> very
> > often.
>
> VACUUM FULL is making your problem worse, not better. Don't do that.
>
> > We are currently using 8.1.3 version.
>
> You need immediately to upgrade to the latest 8.1 stability and
> security release, which is 8.1.11. This is a drop-in replacement.
> It's an urgent fix for your case.
>
> > Auto vacuum is already on. But the table1 is so busy that auto vacuum
> don't
> > get sufficient chance to vacuum it :(.
>
> You probably need to tune autovacuum not to do that table, and just
> vacuum that table in a constant loop or something. VACUUM should
> _never_ "take the site down". If it does, you're doing it wrong.
>
> > Have already tried all the option listed by you, thats y we reached to
> the
> > decision of having a replication sytsem. So any suggestion on that :).
>
> I think you will find that no replication system will solve your
> underlying problems. That said, I happen to work for a company that
> will sell you a replication system to work with 8.1 if you really want
> it.
>
> A
>
>
> --
> Andrew Sullivan
> ajs(at)commandprompt(dot)com
> +1 503 667 4564 x104
> http://www.commandprompt.com/
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--
Regards
Gauri

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