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 1pWmlX-0005eN-G6 for pgsql-hackers@arkaria.postgresql.org; Mon, 27 Feb 2023 23:18:44 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1pWmlW-0007SB-6F for pgsql-hackers@arkaria.postgresql.org; Mon, 27 Feb 2023 23:18:42 +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 1pWmlU-0007S1-HR for pgsql-hackers@lists.postgresql.org; Mon, 27 Feb 2023 23:18:41 +0000 Received: from out5-smtp.messagingengine.com ([66.111.4.29]) by magus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pWmlR-0006I2-3m for pgsql-hackers@postgresql.org; Mon, 27 Feb 2023 23:18:40 +0000 Received: from compute2.internal (compute2.nyi.internal [10.202.2.46]) by mailout.nyi.internal (Postfix) with ESMTP id 838055C0129; Mon, 27 Feb 2023 18:18:32 -0500 (EST) Received: from mailfrontend1 ([10.202.2.162]) by compute2.internal (MEProxy); Mon, 27 Feb 2023 18:18:32 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=anarazel.de; h= cc:cc:content-type:date:date:from:from:in-reply-to:in-reply-to :message-id:mime-version:references:reply-to:sender:subject :subject:to:to; s=fm1; t=1677539912; x=1677626312; bh=8fiefOBwFr EVTlkZMSAxUmrx+dEVBKhOvNgzOd/i+5k=; b=onuwC0D8+vw1ho+ur4ADWHS/WQ vNtZ3DCRr0HgeqSKTEHLhy8zb/IGicUuwJ7+LK2BWRgHlO6MEM5WyRfKnARAXvH/ qt/QbWpUD7PFzztRrwaxmOeDhgAEEHhZDp1RzlQDLS0OCpx7cRTcB+SABALFVQpG GB82SBq0j0GJWAqNU/NK4sfRZ1voVW75wnIJL6RKIRwpLZaIOdDnxV514/u44V6W RdsCDDVgEj5Q6LraS0Z0Jx9ITCxoT2XKM50vnb2n9a8Xvjfq714M699e16E9g00z x7x0KmhD5q90K3Xs7JAkv84BXjQscHXiWD6ECyqeKfGgJV5Hk5dhU+qaFpgg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-type:date:date:feedback-id :feedback-id:from:from:in-reply-to:in-reply-to:message-id :mime-version:references:reply-to:sender:subject:subject:to:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm1; t=1677539912; x=1677626312; bh=8fiefOBwFrEVTlkZMSAxUmrx+dEV BKhOvNgzOd/i+5k=; b=aQnO3SPZYUb25oIkngwplBOf0oi+R2QbeDhVSFV2kTGM J/sVq+T2CbjPWJfJJNvyywYkzXTGY8L9zje7ZgomaiN6IsE1SfzXal42shUxBrjf tbmGHzO7lrEY8oitk8+3S8+6+uPMDS/+3WbLVI9vTlgKAY1hlXOpwfpf0z80Susb 7VLd6S16krQ5KG2jd+Kpv2YDEe2wkEkl+woZnXBwPUtDtq54SMT03u9cUyvdakVO C+xIELU47+QKYkNAbDq0PhoixDkwqdc+WNSI7LXLhCMjJxyTQju2KipSTOpv85kH ONjRXWSuGE+vrh5rpouerwgW9oNb7TCwqd8fvimlAQ== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvhedrudeluddgtdejucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhepfffhvfevuffkfhggtggujgesthdtredttddtvdenucfhrhhomheptehnughr vghsucfhrhgvuhhnugcuoegrnhgurhgvshesrghnrghrrgiivghlrdguvgeqnecuggftrf grthhtvghrnhepvdfffeevhfetveffgeeiteefhfdtvdffjeevhfeuteegleduheetvedu ieettddunecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomh eprghnughrvghssegrnhgrrhgriigvlhdruggv X-ME-Proxy: Feedback-ID: id4a34324:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Mon, 27 Feb 2023 18:18:31 -0500 (EST) Date: Mon, 27 Feb 2023 15:18:30 -0800 From: Andres Freund To: Tom Lane Cc: Melanie Plageman , Kyotaro Horiguchi , vignesh21@gmail.com, pryzby@telsasoft.com, lukas@fittl.com, alvherre@alvh.no-ip.org, magnus@hagander.net, pgsql-hackers@postgresql.org, thomas.munro@gmail.com, m.sakrejda@gmail.com Subject: Re: pg_stat_bgwriter.buffers_backend is pretty meaningless (and more?) Message-ID: <20230227231830.672qdxsq4mqjykpr@awork3.anarazel.de> References: <20230124223512.xqp7tjgqvzqokaxq@awork3.anarazel.de> <20230125.165617.724951472557617342.horikyota.ntt@gmail.com> <20230208063814.boyh5ibydbfuo2uk@awork3.anarazel.de> <20230209050319.chyyup4vtq4jzobq@awork3.anarazel.de> <20520.1677435600@sss.pgh.pa.us> <23770.1677437567@sss.pgh.pa.us> <354645.1677511842@sss.pgh.pa.us> <412740.1677527910@sss.pgh.pa.us> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <412740.1677527910@sss.pgh.pa.us> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk On 2023-02-27 14:58:30 -0500, Tom Lane wrote: > Agreed. I'll push this along with the earlier patch if there are > not objections. None here.