From ahmostovoi@gmail.com Sat Sep  10 16:57:51 2011
Received: from maia.hub.org (maia-3.hub.org [200.46.204.243])
	by mail.postgresql.org (Postfix) with ESMTP id 3B0BBB5DC1E
	for <pgsql-admin-postgresql.org@mail.postgresql.org>;
	Sat, 10 Sep 2011 13:57:51 -0300 (ADT)
Received: from mail.postgresql.org ([200.46.204.86])
	by maia.hub.org (mx1.hub.org [200.46.204.243]) (amavisd-maia,
	port 10024) with ESMTP id 87084-04 for
	<pgsql-admin-postgresql.org@mail.postgresql.org>;
	Sat, 10 Sep 2011 16:57:45 +0000 (UTC)
X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6
Received: from mail-yw0-f46.google.com (mail-yw0-f46.google.com
	[209.85.213.46])
	by mail.postgresql.org (Postfix) with ESMTP id 1E8A3B5DC19
	for <pgsql-admin@postgresql.org>; Sat, 10 Sep 2011 13:57:44 -0300 (ADT)
Received: by ywf7 with SMTP id 7so2443309ywf.19
	for <pgsql-admin@postgresql.org>; Sat, 10 Sep 2011 09:57:44 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma;
	h=message-id:date:from:user-agent:mime-version:to:subject
	:content-type; bh=n/eWl/PxcDtI7inKF+eCBdGZai2DoV4dSnYTXVmWo6c=;
	b=MmWXca1FIQLcAUrn2aqdYLFTM/6uRjMilA8ACaf2vbTa8mJ3VjhIgrEh0Ah891qlRr
	YiPvJS9MyQ0LKtdyXJZMnn/U8s083BQc9Xs/bS7TSkZX/R7WOnAbKTI2w2f1jnDAaYBv
	eXdH0qUPDtnQGHaLL7yXHi++izgEMpXGD7pMA=
Received: by 10.236.168.68 with SMTP id j44mr18702333yhl.32.1315673864632;
	Sat, 10 Sep 2011 09:57:44 -0700 (PDT)
Received: from [192.168.0.11] ([190.55.140.134])
	by mx.google.com with ESMTPS id s42sm9817690yhs.0.2011.09.10.09.57.42
	(version=SSLv3 cipher=OTHER); Sat, 10 Sep 2011 09:57:43 -0700 (PDT)
Message-ID: <4E6B9703.6070101@gmail.com>
Date: Sat, 10 Sep 2011 13:57:39 -0300
From: Alejandro <ahmostovoi@gmail.com>
User-Agent: Mozilla/5.0 (X11; Linux x86_64;
	rv:6.0.2) Gecko/20110906 Thunderbird/6.0.2
MIME-Version: 1.0
To: pgsql-admin@postgresql.org
Subject: Estimate physical index size
Content-Type: multipart/alternative;
	boundary="------------010309070505020607060003"
X-Virus-Scanned: Maia Mailguard 1.0.1
X-Spam-Status: No, hits=-1.888 tagged_above=-10 required=5
	tests=BAYES_00=-1.9, FREEMAIL_FROM=0.001, HTML_MESSAGE=0.001,
	T_TO_NO_BRKTS_FREEMAIL=0.01
X-Spam-Level: 
X-Archive-Number: 201109/51
X-Sequence-Number: 38288

This is a multi-part message in MIME format.
--------------010309070505020607060003
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

Hi all,
     I need to know how to estimate physical index size. I can't find 
any formulas in online documentation.

     Could someone tell me where/what read?

Thanks in advance

Alejandro.

--------------010309070505020607060003
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit

<html>
  <head>

    <meta http-equiv="content-type" content="text/html; charset=ISO-8859-1">
  </head>
  <body bgcolor="#FFFFFF" text="#000000">
    <big><tt>Hi all,<br>
        &nbsp;&nbsp;&nbsp; I need to know how to estimate physical index size. I can't
        find any formulas in online documentation.<br>
        <br>
        &nbsp;&nbsp;&nbsp; Could someone tell me where/what read?<br>
        <br>
        Thanks in advance<br>
        <br>
        Alejandro.</tt></big>
  </body>
</html>

--------------010309070505020607060003--



From Kevin.Grittner@wicourts.gov Sun Sep  11 15:47:51 2011
Received: from maia.hub.org (maia-5.hub.org [200.46.204.29])
	by mail.postgresql.org (Postfix) with ESMTP id 9B49AB5DBC8
	for <pgsql-admin-postgresql.org@mail.postgresql.org>;
	Sun, 11 Sep 2011 12:47:51 -0300 (ADT)
Received: from mail.postgresql.org ([200.46.204.86])
	by maia.hub.org (mx1.hub.org [200.46.204.29]) (amavisd-maia, port 10024)
	with ESMTP id 52105-08 for
	<pgsql-admin-postgresql.org@mail.postgresql.org>;
	Sun, 11 Sep 2011 15:47:45 +0000 (UTC)
X-Greylist: from auto-whitelisted by SQLgrey-1.7.6
Received: from gw.wicourts.gov (gwmta.wicourts.gov [165.219.244.99])
	by mail.postgresql.org (Postfix) with ESMTP id 112C1B5DBC5
	for <pgsql-admin@postgresql.org>; Sun, 11 Sep 2011 12:47:44 -0300 (ADT)
Received: from Courts-MTA by gw.wicourts.gov
	with Novell_GroupWise; Sun, 11 Sep 2011 10:47:43 -0500
Message-Id: <4E6C91CD02000025000410C0@gw.wicourts.gov>
X-Mailer: Novell GroupWise Internet Agent 8.0.1 
Date: Sun, 11 Sep 2011 10:47:41 -0500
From: "Kevin Grittner" <Kevin.Grittner@wicourts.gov>
To: <ahmostovoi@gmail.com>,<pgsql-admin@postgresql.org>
Subject: Re: Estimate physical index size
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
X-Virus-Scanned: Maia Mailguard 1.0.1
X-Spam-Status: No, hits=-2.404 tagged_above=-10 required=5
	tests=BAYES_00=-1.9, RP_MATCHES_RCVD=-0.504
X-Spam-Level: 
X-Archive-Number: 201109/56
X-Sequence-Number: 38293

Alejandro  wrote:
 
> I need to know how to estimate physical index size. I can't find
> any formulas in online documentation.
 
For an existing index you probably want pg_relation_size():
 
http://www.postgresql.org/docs/9.0/interactive/functions-admin.html#FUNCTIONS-ADMIN-DBSIZE
 
-Kevin





From ahmostovoi@gmail.com Sun Sep  11 18:57:26 2011
Received: from maia.hub.org (maia-3.hub.org [200.46.204.243])
	by mail.postgresql.org (Postfix) with ESMTP id E340FB5DBF2
	for <pgsql-admin-postgresql.org@mail.postgresql.org>;
	Sun, 11 Sep 2011 15:57:26 -0300 (ADT)
Received: from mail.postgresql.org ([200.46.204.86])
	by maia.hub.org (mx1.hub.org [200.46.204.243]) (amavisd-maia,
	port 10024) with ESMTP id 34141-02 for
	<pgsql-admin-postgresql.org@mail.postgresql.org>;
	Sun, 11 Sep 2011 18:57:20 +0000 (UTC)
X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6
Received: from mail-gx0-f178.google.com (mail-gx0-f178.google.com
	[209.85.161.178])
	by mail.postgresql.org (Postfix) with ESMTP id 60C76B5DBE1
	for <pgsql-admin@postgresql.org>; Sun, 11 Sep 2011 15:57:20 -0300 (ADT)
Received: by gxk8 with SMTP id 8so3046431gxk.37
	for <pgsql-admin@postgresql.org>; Sun, 11 Sep 2011 11:57:20 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma;
	h=message-id:date:from:user-agent:mime-version:to:cc:subject
	:references:in-reply-to:content-type:content-transfer-encoding;
	bh=za57YyXbfSbSzcMN2E44HMbaIm/7WuGzS3hqHafoaDY=;
	b=ZhnZ/dStWaKKCTKSNv+/fQB09U79oPWiREniHy1S1pX9Xxafb2VWuc69QPTJEbTddg
	tnGD2Nh3irrsN/noca16dSrSX7yEeOe3GrePssWSFjASNJvcl30k7wwt7jicPhpwAY+p
	yXtuIJZlA13iNRRSh4/8dLWpv2f3cVUyi+KIA=
Received: by 10.236.179.103 with SMTP id g67mr5489610yhm.49.1315767438274;
	Sun, 11 Sep 2011 11:57:18 -0700 (PDT)
Received: from [192.168.0.11] ([190.55.140.134])
	by mx.google.com with ESMTPS id e2sm12116322yhh.10.2011.09.11.11.57.15
	(version=SSLv3 cipher=OTHER); Sun, 11 Sep 2011 11:57:16 -0700 (PDT)
Message-ID: <4E6D0484.2000201@gmail.com>
Date: Sun, 11 Sep 2011 15:57:08 -0300
From: Alejandro <ahmostovoi@gmail.com>
User-Agent: Mozilla/5.0 (X11; Linux x86_64;
	rv:6.0.2) Gecko/20110906 Thunderbird/6.0.2
MIME-Version: 1.0
To: Kevin Grittner <Kevin.Grittner@wicourts.gov>
CC: pgsql-admin@postgresql.org
Subject: Re: Estimate physical index size
References: <4E6C91CD02000025000410C0@gw.wicourts.gov>
In-Reply-To: <4E6C91CD02000025000410C0@gw.wicourts.gov>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-Virus-Scanned: Maia Mailguard 1.0.1
X-Spam-Status: No, hits=-1.899 tagged_above=-10 required=5
	tests=BAYES_00=-1.9, FREEMAIL_FROM=0.001
X-Spam-Level: 
X-Archive-Number: 201109/58
X-Sequence-Number: 38295

Kevin,
     thanks for reply.

     I need to estimate the entire database size (tables, indexes, 
etc.), prior to create it. I know how to calculate a table size, but I 
don't know how to calculate an index size.

Thanks.


Alejandro


On 11/09/11 12:47, Kevin Grittner wrote:
> Alejandro  wrote:
>
>> I need to know how to estimate physical index size. I can't find
>> any formulas in online documentation.
>
> For an existing index you probably want pg_relation_size():
>
> http://www.postgresql.org/docs/9.0/interactive/functions-admin.html#FUNCTIONS-ADMIN-DBSIZE
>
> -Kevin
>
>