Re: psql \dt and table size

From: Pavel Stehule <pavel(dot)stehule(at)gmail(dot)com>
To: Alvaro Herrera <alvherre(at)commandprompt(dot)com>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, Bernd Helmle <mailings(at)oopsware(dot)de>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: psql \dt and table size
Date: 2011-03-23 20:50:36
Message-ID: AANLkTikyaeJ0XdKDzxSvqPE8kaRRTiUQJQHwNJ8ecN2W@mail.gmail.com
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers

2011/3/23 Alvaro Herrera <alvherre(at)commandprompt(dot)com>:
> Excerpts from Robert Haas's message of mié mar 23 17:24:59 -0300 2011:
>> On Mon, Mar 21, 2011 at 1:44 PM, Bernd Helmle <mailings(at)oopsware(dot)de> wrote:
>> > It stroke me today again, that \dt+ isn't displaying the acurate table size
>> > for tables, since it uses pg_relation_size() till now. With having
>> > pg_table_size() since PostgreSQL 9.0 available, i believe it would be more
>> > useful to have the total acquired storage displayed, including implicit
>> > objects (the mentioned case where it was not very useful atm was a table
>> > with a big TOAST table).
>>
>> I guess the threshold question for this patch is whether
>> pg_table_size() is a "more accurate" table size or just a different
>> one.
>
> Not including the toast table and index in the size is just plain wrong.
> Reporting the size without the toast objects is an implementation
> artifact that should not be done unless explicitely requested.

+1

can we enhance a detail for table and show more accurate numbers?

table size: xxx
toast size: xxx
indexes size: xxx

Regards

Pavel Stehule

>
> --
> Álvaro Herrera <alvherre(at)commandprompt(dot)com>
> The PostgreSQL Company - Command Prompt, Inc.
> PostgreSQL Replication, Consulting, Custom Development, 24x7 support
>
> --
> Sent via pgsql-hackers mailing list (pgsql-hackers(at)postgresql(dot)org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-hackers
>

In response to

Responses

Browse pgsql-hackers by date

  From Date Subject
Next Message Kohei KaiGai 2011-03-23 21:13:09 Lack of post creation hook on extension
Previous Message Radosław Smogura 2011-03-23 20:49:17 Re: 2nd Level Buffer Cache