Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jRVjh-0002Ql-Ip for pgsql-hackers@arkaria.postgresql.org; Thu, 23 Apr 2020 06:53:25 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1jRVjg-0000qn-9e for pgsql-hackers@arkaria.postgresql.org; Thu, 23 Apr 2020 06:53:24 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jRVjg-0000qf-2H for pgsql-hackers@lists.postgresql.org; Thu, 23 Apr 2020 06:53:24 +0000 Received: from wforward3-smtp.messagingengine.com ([64.147.123.22]) by magus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jRVjY-0000V0-Kj for pgsql-hackers@lists.postgresql.org; Thu, 23 Apr 2020 06:53:23 +0000 Received: from compute1.internal (compute1.nyi.internal [10.202.2.41]) by mailforward.west.internal (Postfix) with ESMTP id B373A64C; Thu, 23 Apr 2020 02:53:13 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute1.internal (MEProxy); Thu, 23 Apr 2020 02:53:13 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=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=fm2; bh=l1TIceAqvWf4yffXHJ47DkpJq+J8XMvEd8H6Rls2g eM=; b=2wEpGoeFJkiJaozs7Oku0162C7GkNTlismSmcQiNykS4gFAS6NeUnxWXv KCVzMMc0Iq8jl9sF2cfEukowNBThVKU62zVOIzZC/IwFOMe28OLTgMe3D2tBnzbT BPYTe3LHaq+fFD82TEw8O3ZR1fy3/x9Ulo0fyQMFgRAy5iVfK+q3N5WVPalSrQJ1 q401mZWlZa5LtviZswed++khbpaWTTuRclI3iszs/UiRkCB3o3939EVNbfi8H/1z DDAvTF/YMI7MMf++50KP6usggqfv7NUsjoPtTg5xncjWodIUIBfX/I7u8zO5pdYF xq5kD10h1OlEzYaWcwOduszY0oMfg== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduhedrgeekgddutdefucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucenucfjughrpefuvfhfhfhokffffgggjggtgfesth ejredttdefjeenucfhrhhomheprfgvthgvrhcugfhishgvnhhtrhgruhhtuceophgvthgv rhdrvghishgvnhhtrhgruhhtsedvnhguqhhurggurhgrnhhtrdgtohhmqeenucffohhmrg hinhepvdhnughquhgrughrrghnthdrtghomhenucfkphepleefrddvgeefrdeirddvgedu necuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomhepphgvth gvrhdrvghishgvnhhtrhgruhhtsedvnhguqhhurggurhgrnhhtrdgtohhm X-ME-Proxy: Received: from april.pezone.net (p5df306f1.dip0.t-ipconnect.de [93.243.6.241]) by mail.messagingengine.com (Postfix) with ESMTPA id 783F73065D1B; Thu, 23 Apr 2020 02:53:12 -0400 (EDT) Subject: Re: Regression instability + performance issue in TRIGGERS view To: Tom Lane , pgsql-hackers@lists.postgresql.org References: <5891.1587594470@sss.pgh.pa.us> From: Peter Eisentraut Organization: 2ndQuadrant Message-ID: <7c829b06-808c-3570-8738-70596f370601@2ndquadrant.com> Date: Thu, 23 Apr 2020 08:53:11 +0200 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: <5891.1587594470@sss.pgh.pa.us> 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 2020-04-23 00:27, Tom Lane wrote: > This should not only fix the regression instability but offer a pretty > significant speedup for real-world use of the triggers view, so I > propose squeezing it in even though we're past feature freeze. I think that's fine. > However ... what about the back branches? As noted, we are seeing > this now in the back branches, at least v12. Are we willing to make > a change in the information_schema in back branches to make the > instability go away? (And if not, how else could we fix it?) That would be okay with me. -- Peter Eisentraut http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services