Received: from malur.postgresql.org ([217.196.149.56])
	by arkaria.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256)
	(Exim 4.89)
	(envelope-from <pgsql-hackers-owner+archive@lists.postgresql.org>)
	id 1h3zgI-00026P-1m
	for pgsql-hackers@arkaria.postgresql.org; Wed, 13 Mar 2019 08:56:10 +0000
Received: from localhost ([127.0.0.1] helo=malur.postgresql.org)
	by malur.postgresql.org with esmtp (Exim 4.89)
	(envelope-from <pgsql-hackers-owner+archive@lists.postgresql.org>)
	id 1h3zgF-0006Dj-Ou
	for pgsql-hackers@arkaria.postgresql.org; Wed, 13 Mar 2019 08:56:07 +0000
Received: from makus.postgresql.org ([2001:4800:3e1:1::229])
	by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256)
	(Exim 4.89)
	(envelope-from <gkokolatos@pm.me>)
	id 1h3zgF-00067u-Cl
	for pgsql-hackers@lists.postgresql.org; Wed, 13 Mar 2019 08:56:07 +0000
Received: from mahout.postgresql.org ([2001:4800:3e1:1::227])
	by makus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256)
	(Exim 4.89)
	(envelope-from <gkokolatos@pm.me>)
	id 1h3zgC-0002fW-70
	for pgsql-hackers@lists.postgresql.org; Wed, 13 Mar 2019 08:56:06 +0000
Received: from coridan.postgresql.org ([2001:4800:3e1:1::213])
	by mahout.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256)
	(Exim 4.89)
	(envelope-from <gkokolatos@pm.me>)
	id 1h3zgB-0001c0-9K
	for pgsql-hackers@lists.postgresql.org; Wed, 13 Mar 2019 08:56:03 +0000
Received: from localhost ([127.0.0.1] helo=coridan.postgresql.org)
	by coridan.postgresql.org with esmtp (Exim 4.89)
	(envelope-from <gkokolatos@pm.me>)
	id 1h3zg9-0003By-OV
	for pgsql-hackers@lists.postgresql.org; Wed, 13 Mar 2019 08:56:01 +0000
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: base64
Subject: Re: CPU costs of random_zipfian in pgbench
To: pgsql-hackers@lists.postgresql.org
From: Georgios Kokolatos <gkokolatos@pm.me>
Cc: Fabien Coelho <postgresql.org@coelho.net>
Date: Wed, 13 Mar 2019 08:55:10 +0000
User-Agent: pgcommitfest
X-cfsender: gkokolatos
In-Reply-To: <alpine.DEB.2.21.1902221716430.4182@lancre>
References: <b5e172e9-ad22-48a3-86a3-589afa20e8f7@2ndquadrant.com>
 <alpine.DEB.2.21.1902221716430.4182@lancre>
Message-ID: 
 <155246731010.16480.15850913449923768119.pgcf@coridan.postgresql.org>
List-Id: <pgsql-hackers.lists.postgresql.org>
List-Help: <https://lists.postgresql.org/manage/>
List-Subscribe: <https://lists.postgresql.org/manage/>
List-Post: <mailto:pgsql-hackers@lists.postgresql.org>
List-Owner: <mailto:pgsql-hackers-owner@lists.postgresql.org>
List-Archive: <https://www.postgresql.org/list/pgsql-hackers>
Precedence: bulk
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