Re: postmaster slowing down

From: Richard Huxton <dev(at)archonet(dot)com>
To: "surabhi(dot)ahuja" <surabhi(dot)ahuja(at)iiitb(dot)ac(dot)in>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: postmaster slowing down
Date: 2006-11-06 10:50:23
Message-ID: 454F136F.4000603@archonet.com
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surabhi.ahuja wrote:
> I am using postgres 8.0.0
> In my program I have a single connection to a database.
> in side this connection i do the following
>
> 1. begin transaction
> 2. insert rows to table/s. (max number of tables = 4)
> 3. commit transaction
>
> the above 3 steps take place around 800, 000 times
> does it mean that it will slow down.
>
> I have seen the behaviour as random, sometimes its fast nd sometimes very slow.
>
> nothing else is running on the m/c
> if i see the top output,
> it shows 97 % postmaster

That's normal enough if you're busy.

Question 1: are you happy that you're vacuuming/analysing enough?
Question 2: When it's slow, is it CPU or I/O that's the problem?

P.S. Don't start a new question by replying to another - most people
will miss your question as it will be nested inside the other.
--
Richard Huxton
Archonet Ltd

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