From: Alexey Romanchuk <aromanchuk@swsoft.com>
To: pgsql-performance@postgresql.org
Subject: Re: Determine dead tuples size
Date: Fri, 16 Mar 2007 11:41:50 +0600
Message-ID: <17410023575.20070316114150@swsoft.com> (raw)
In-Reply-To: <20070315114508.GA12266@winnie.fuhr.org>
References: <24499713.20070315135847@swsoft.com>
<20070315114508.GA12266@winnie.fuhr.org>
Hello, Michael.
> On Thu, Mar 15, 2007 at 01:58:47PM +0600, Alexey Romanchuk wrote:
>> is it possible to determine dead tuples size for table?
> See contrib/pgstattuple.
thanks, i install contribs and try to analyze result of pgstattuple
function and found it strange.
Here it is output:
pgstattuple
----------------------------------------------------------------------
(233242624,1186804,206555428,88.56,20707,3380295,1.45,13896816,5.96)
When i try to sum all size (live, dead and free) the sum is not equal
total size. For this table 206555428 + 3380295 + 13896816 = 223832539.
The difference between total and sum is 9410085. It is near 5%.
Is it ok?
--
Alexey Romanchuk
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-performance@postgresql.org
Cc: aromanchuk@swsoft.com
Subject: Re: Determine dead tuples size
In-Reply-To: <17410023575.20070316114150@swsoft.com>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox