From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f176.google.com (mail-pl1-f176.google.com [209.85.214.176]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 191FF1367 for ; Tue, 6 Feb 2024 01:25:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.176 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707182749; cv=none; b=L5J8dlU2HkuRni+KBQnVbIQipqtY/+HOJ+bBVhcIvvIjMitmfWPa4fuqp5Wr34Xm1UTJqu8XbyHp9df/Yv+aaKyGKhDhd/pTNKhBoRcaD1M4rZMYIM+iRIN8UuztjRK5XX7lh/oTxOLrdg2wea+BIZ7iZ6AF0XIHgwJVOgbv+x0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707182749; c=relaxed/simple; bh=xPhVl2iyOivm3Z8E/ftGw19JdA9+2hfmNugZ8ePuDhY=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=uo+KxHvsFl8v6fiNYaIMlNeaqjWw1+HKoU9d+BXz0kbQJYgS7dzij0b0SavdO/OjOu3NLbijimRGVxWJFVwk9h15LOAfWFayFb6uqAwSek3JvyMzo+9pvi6nQTkwzo7CX5qacbI/CbvjAxuc2LxqX/XJZU90vhJwS5Ciupr1D8I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=acm.org; spf=pass smtp.mailfrom=gmail.com; arc=none smtp.client-ip=209.85.214.176 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=acm.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-pl1-f176.google.com with SMTP id d9443c01a7336-1d746ce7d13so41486185ad.0 for ; Mon, 05 Feb 2024 17:25:47 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1707182747; x=1707787547; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=EfH74TYuZGZBD3gnqL6oIjRHEvMXzZ6fQIQB4Pz4Ego=; b=m9LQBlOBMpFn97YCa1y1wo5mF4aiYlJZTNhqM5KKk3AOrM919ncZlWA+tMSiBv4jKy U+QAZDiJymurpsxeM+eNqt9B9NvbpAfP4bj5szDtGWQsRuhvoJ7Uub65yF+7s3B6zFQa qrwXjxKKeN1d4MV7Jh/1RK3Ynqwhf4Nv32/tjBhCYKrAQro0V8NvXfZTXPCKf/ID5YdZ CAlViZ+qEQTIOzAfzfT2bJVyIHnxhhFGFzKTYU5Pozv1n029+wjCTOh837G2OmjJ2YX3 lnl4m6Ino6k0MQfPuKtfFV+UJ/K7gEu6YEnmHhMJsbxkZF4WjwNJZ6ZJ63XRtG3muHEk LpVQ== X-Gm-Message-State: AOJu0YwSv1tR0MR19mbbFKCm/7ql2V/YI3b0+oaAN0Juef/Xv2qQRIX6 XTX8H8a5L/SFPQK6cJSxc540Qx9gWNeeqSgG0b6DkChEjfWadm14 X-Google-Smtp-Source: AGHT+IGeXKRtT9W1LJG6mPRgiHjBJ4zC8hNfCDVBubWzCzv6teg3jEEUa51cp9v1QpDpzST//Kmftw== X-Received: by 2002:a17:902:7ec2:b0:1d9:ca7e:f0b4 with SMTP id p2-20020a1709027ec200b001d9ca7ef0b4mr233109plb.16.1707182747168; Mon, 05 Feb 2024 17:25:47 -0800 (PST) X-Forwarded-Encrypted: i=0; AJvYcCU9x8L+y+lWN/r9zFUjKzGBPv9YXMGwNjJzW3oy8qIiBoJWDTsmispFFCYlcLYR1sAiYqqQJ0WJsFHMlfW3RKzpB3W9aIDQpgK9dP7/crIJ3PJEX9TDM8DAXz9WiNdg6gVYxtfzI4xeCHULYhC08XODtY85eARSYOmJlSoN31aMs0eJp540BUpzQHGE7efN/YWOQ3MYBh6kFVuNjPaX5skz/XkNIMLyDoC5HREP+XvKw1/frqAlnqPRedln62lT0AKH6A== Received: from ?IPV6:2601:647:4d7e:54f3:667:4981:ffa1:7be1? ([2601:647:4d7e:54f3:667:4981:ffa1:7be1]) by smtp.gmail.com with ESMTPSA id o9-20020a17090323c900b001d94a3f3987sm522408plh.184.2024.02.05.17.25.46 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 05 Feb 2024 17:25:46 -0800 (PST) Message-ID: <04fb99e4-3e67-4c69-b1ff-d8563dc3098d@acm.org> Date: Mon, 5 Feb 2024 17:25:45 -0800 Precedence: bulk X-Mailing-List: dm-devel@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 00/26] Zone write plugging Content-Language: en-US To: Damien Le Moal , linux-block@vger.kernel.org, Jens Axboe , linux-scsi@vger.kernel.org, "Martin K . Petersen" , dm-devel@lists.linux.dev, Mike Snitzer Cc: Christoph Hellwig References: <20240202073104.2418230-1-dlemoal@kernel.org> <548aa284-6c80-4f01-a5ce-bb16f64e9c85@kernel.org> From: Bart Van Assche In-Reply-To: <548aa284-6c80-4f01-a5ce-bb16f64e9c85@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 2/5/24 16:07, Damien Le Moal wrote: > On 2/6/24 03:18, Bart Van Assche wrote: >> Are there numbers available about the performance differences (bandwidth >> and latency) between plugging zoned write bios and zoned write plugging >> requests? > > Finish reading the cover letter. It has lots of measurements with rc2, Jens > block/for-next and ZWP... Hmm ... as far as I know nobody ever implemented zoned write plugging for requests in the block layer core so these numbers can't be in the cover letter. Has the bio plugging approach perhaps been chosen because it works better for bio-based device mapper drivers? Thanks, Bart.