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 1mW5Gy-0001Zx-B6 for pgsql-hackers@arkaria.postgresql.org; Thu, 30 Sep 2021 23:15:28 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1mW5Gw-0001jR-CO for pgsql-hackers@arkaria.postgresql.org; Thu, 30 Sep 2021 23:15:26 +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 1mW5Gv-0001jJ-H9 for pgsql-hackers@lists.postgresql.org; Thu, 30 Sep 2021 23:15:26 +0000 Received: from out4-smtp.messagingengine.com ([66.111.4.28]) by magus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mW5Gs-00028h-3G for pgsql-hackers@postgresql.org; Thu, 30 Sep 2021 23:15:25 +0000 Received: from compute1.internal (compute1.nyi.internal [10.202.2.41]) by mailout.nyi.internal (Postfix) with ESMTP id B31D15C00F8; Thu, 30 Sep 2021 19:15:18 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute1.internal (MEProxy); Thu, 30 Sep 2021 19:15:18 -0400 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:subject:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm3; bh=Q/J4MFqf81UiEfWK/QRHQy+2CaGrvFWTTXWyO1RE0tM=; b=j5rZcKl6 OdpSHqOCEtg3crEaJ6C5R6sYa6cRe78iev6HUEUphEtPm7WLBk1VroqgQzBIGhYV ayHRnhQbJzZe98bHC10Advq2sps/fHRx6fBU7X9p8n21mpBv0xSJqO2voLhne2bx 7lBz5nf3vugC0GHAmFCyadWhj6S5Xhay/ERsh+Q5Ko6oYCsLafNowu++t/43LJBQ YMOEB+zauQug1shBDZD1yF6I4obijcHBB32xEFCCus8zmtUSFOyGCJYQn1gka3wl 034sQqJY3vYkyYAu61IMJ2BTzcTgjnAt01j1+YZ9MrzRvTBpyoZnCfcF97QRrGyk j0DPf7ze8S/dCg== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvtddrudekhedgudekucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhepfffhvffukfggtggugfgjsehtkeertddttdejnecuhfhrohhmpeetlhhvrghr ohcujfgvrhhrvghrrgcuoegrlhhvhhgvrhhrvgesrghlvhhhrdhnohdqihhprdhorhhgqe enucggtffrrghtthgvrhhnpedujeevjeffjeevuddutedvkeeiueeitddvieelfeekveej udefgeeuvdejhfeuleenucffohhmrghinhepvghnthgvrhhprhhishgvuggsrdgtohhmne cuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomheprghlvhhh vghrrhgvsegrlhhvhhdrnhhoqdhiphdrohhrgh X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Thu, 30 Sep 2021 19:15:17 -0400 (EDT) Received: by perhan.alvh.no-ip.org (Postfix, from userid 1000) id 8F7CD2A06AB; Thu, 30 Sep 2021 20:15:13 -0300 (-03) Date: Thu, 30 Sep 2021 20:15:13 -0300 From: Alvaro Herrera To: Melanie Plageman Cc: Andres Freund , Kyotaro Horiguchi , Magnus Hagander , Pg Hackers , Lukas Fittl , Thomas Munro Subject: Re: pg_stat_bgwriter.buffers_backend is pretty meaningless (and more?) Message-ID: <202109302315.65qtfrmgbpzt@alvherre.pgsql> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk Can you say more about 0001? -- Álvaro Herrera PostgreSQL Developer — https://www.EnterpriseDB.com/ "Use it up, wear it out, make it do, or do without"