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 ) id 1iSGII-0004v4-Uh for pgsql-hackers@arkaria.postgresql.org; Wed, 06 Nov 2019 08:03:59 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.89) (envelope-from ) id 1iSGIF-0003fm-Pj for pgsql-hackers@arkaria.postgresql.org; Wed, 06 Nov 2019 08:03:55 +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 ) id 1iSGIF-0003ff-De for pgsql-hackers@lists.postgresql.org; Wed, 06 Nov 2019 08:03:55 +0000 Received: from wout3-smtp.messagingengine.com ([64.147.123.19]) by makus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1iSGIC-0003w0-Vf for pgsql-hackers@lists.postgresql.org; Wed, 06 Nov 2019 08:03:54 +0000 Received: from compute7.internal (compute7.nyi.internal [10.202.2.47]) by mailout.west.internal (Postfix) with ESMTP id 54A0945A; Wed, 6 Nov 2019 03:03:51 -0500 (EST) Received: from mailfrontend1 ([10.202.2.162]) by compute7.internal (MEProxy); Wed, 06 Nov 2019 03:03:51 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm1; bh=NNv5DXUd/XFgf9yzyQ3JE2QLqKMyFIYKxBEMMxydi 8c=; b=ABH/hlTUs19tikREFnLEejk15cWgdlT3Q2DeeP4BdHeR9/7usTw/BzB67 lNYYnUlK3KS9ykpLP/dk96kUwmU+6VrLUV3nm4olUyzyruaGNY8/+Y2M0mOy0DBK umzj7DMnERQgc7pFjUxlr5eeZIzk2eIppQLa8XVu227zJUgMhATwIqfRdwrHGQSs oWVfA/lQ1NWTTpzUZbWnJEE2IV77jDrnSTWq+G3RVP6i0EonD/jcTbqTV1VEjECe GHzQgz9wFHAWp+lJpWhAOBramHE9LHoWf6m9bY1hDhIL1N/5ogQKg+v1piuejh/Q I6r4KgvSgY+uxhzytjZNXoeyXC8oA== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedufedrudduiedgudduhecutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfgh necuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmd enucfjughrpefuvfhfhfhokffffgggjggtgfesthejredttdefjeenucfhrhhomheprfgv thgvrhcugfhishgvnhhtrhgruhhtuceophgvthgvrhdrvghishgvnhhtrhgruhhtsedvnh guqhhurggurhgrnhhtrdgtohhmqeenucffohhmrghinhepvdhnughquhgrughrrghnthdr tghomhenucfkphepleefrddvgedvrddugeejrdejleenucfrrghrrghmpehmrghilhhfrh homhepphgvthgvrhdrvghishgvnhhtrhgruhhtsedvnhguqhhurggurhgrnhhtrdgtohhm necuvehluhhsthgvrhfuihiivgeptd X-ME-Proxy: Received: from april.pezone.net (p5df2934f.dip0.t-ipconnect.de [93.242.147.79]) by mail.messagingengine.com (Postfix) with ESMTPA id 52CF380068; Wed, 6 Nov 2019 03:03:49 -0500 (EST) Subject: Re: pglz performance To: Alvaro Herrera References: <20191101154828.GA15829@alvherre.pgsql> Cc: Andrey Borodin , Gasper Zejn , pgsql-hackers@lists.postgresql.org From: Peter Eisentraut Organization: 2ndQuadrant Message-ID: Date: Wed, 6 Nov 2019 09:03:48 +0100 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20191101154828.GA15829@alvherre.pgsql> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk On 2019-11-01 16:48, Alvaro Herrera wrote: > As I understand that report, in these results "less is better", so the > hacked8 variant shows better performance (33.8) than current (42.5). > The "hacked" variant shows worse performance (48.2) that the current > code. Which appears to be the opposite of, or at least inconsistent with, results earlier in the thread. -- Peter Eisentraut http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services