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Re: Large number of tables slow insert

From: "Scott Marlowe" <scott(dot)marlowe(at)gmail(dot)com>
To: "Loic Petit" <tls(dot)wydd(at)free(dot)fr>
Cc: max(at)nts(dot)biz(dot)ua, pgsql-performance(at)postgresql(dot)org
Subject: Re: Large number of tables slow insert
Date: 2008-08-24 00:50:48
Message-ID: dcc563d10808231750t6b04590bifdf8acc387777c05@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-performance
On Sat, Aug 23, 2008 at 6:47 PM, Loic Petit <tls(dot)wydd(at)free(dot)fr> wrote:
> I was a bit confused about the read and write sorry ! I understand what you
> mean...
> But do you think that the IO cost (of only one page) needed to handle the
> index writing is superior than 300ms ? Because each insert in any of these
> tables is that slow.
> NB: between my "small" and my "big" tests the only difference is the number
> of table (10 and 3000), there is almost the same amount of on-disk data

It could be that the tables or indexes are heavily bloated.  What's
the churn rate on these tables / indexes?

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