From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A88DAE7D0B6 for ; Thu, 21 Sep 2023 22:40:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229747AbjIUWkc (ORCPT ); Thu, 21 Sep 2023 18:40:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55088 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232238AbjIUWkZ (ORCPT ); Thu, 21 Sep 2023 18:40:25 -0400 Received: from mail-pl1-f179.google.com (mail-pl1-f179.google.com [209.85.214.179]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E8D7B3C22; Thu, 21 Sep 2023 13:11:05 -0700 (PDT) Received: by mail-pl1-f179.google.com with SMTP id d9443c01a7336-1c1ff5b741cso12529355ad.2; Thu, 21 Sep 2023 13:11:05 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1695327065; x=1695931865; 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=AqLUJredNWFn6UV9EpZQHzPOud7X+d09rY2QfVP8FfM=; b=hB++SQVsehyjfHesltdoKUlix0BRL+fSqltcUJUpDSz0hE4z2v3h17Yn7tT5cr6eA4 fuxNjGLSy15TF9h0wRHOCgBrbR3VARg4ovhRmzamN9unix/8twLGHTd9GHnI7N/6WovJ UnqaY+TPIyI6Xcnq5IMeiNQVQP6CDlH9CcGNvMy8sNMClDxphv4nOrJ6Jt2YFavfOJ8Z UJskvTvezFck9oe5WxqPB35kkemR6pAYN/PeiJrRAbZ+O8UbkN8Fl1/RjLvWki88AIXw jhfjlr6uaP3kfYE1KkZamw8j1iHv9cgta24m/z7pOq3HB6cNv2fKt3Tvg5AugJ9Q2ZED Nzow== X-Gm-Message-State: AOJu0YxBLOJG1vJoR1s1nW2IErM/uppeLm8s2GLWT0YTmGH7jkAS4yZy kXre58vLoAksw15UZAOLYZc= X-Google-Smtp-Source: AGHT+IE4uBXaKeNClIyeQxDM3JodKlX79G3w3w9XgQ/pS0vx9mNOOgruGpeL+ibjNdK7nkmnSAy4Ag== X-Received: by 2002:a17:902:82c3:b0:1c3:f745:1cd5 with SMTP id u3-20020a17090282c300b001c3f7451cd5mr6113963plz.34.1695327065034; Thu, 21 Sep 2023 13:11:05 -0700 (PDT) Received: from ?IPV6:2620:15c:211:201:6903:9a1f:51f3:593e? ([2620:15c:211:201:6903:9a1f:51f3:593e]) by smtp.gmail.com with ESMTPSA id a7-20020a170902ecc700b001b87bedcc6fsm1922245plh.93.2023.09.21.13.11.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 21 Sep 2023 13:11:03 -0700 (PDT) Message-ID: Date: Thu, 21 Sep 2023 13:11:02 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 00/13] Pass data temperature information to zoned UFS devices Content-Language: en-US To: Matthew Wilcox Cc: Niklas Cassel , Jens Axboe , "linux-block@vger.kernel.org" , "linux-scsi@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" , "Martin K . Petersen" , Christoph Hellwig , Bean Huo , Bean Huo , Avri Altman , Daejun Park , Luca Porzio References: <20230920191442.3701673-1-bvanassche@acm.org> <1522d8ec-6b15-45d5-b6d9-517337e2c8cf@acm.org> <8781636a-57ac-4dbd-8ec6-b49c10c81345@acm.org> <4cacae64-6a11-41ab-9bec-f8915da00106@acm.org> From: Bart Van Assche In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org On 9/21/23 12:46, Matthew Wilcox wrote: > If vendor support already exists, then why did you dodge the question > asking for quantified data that I asked earlier? And can we have that > data now? From Rho, Eunhee, Kanchan Joshi, Seung-Uk Shin, Nitesh Jagadeesh Shetty, Jooyoung Hwang, Sangyeun Cho, Daniel DG Lee, and Jaeheon Jeong. "{FStream}: Managing Flash Streams in the File System." In 16th USENIX Conference on File and Storage Technologies (FAST 18), pp. 257-264. 2018: "Experimental results show that FStream enhances the filebench performance by 5%∼35% and reduces WAF (Write Amplification Factor) by 7%∼46%. For a NoSQL database benchmark, performance is improved by up to 38% and WAF is reduced by up to 81%." Please note that these results are for ext4 instead of F2FS. The benefit for F2FS is probably smaller since F2FS is optimized for NAND flash media. I have Cc-ed open source contributors from multiple UFS vendors on this email and I hope that they can share performance numbers for F2FS. Thanks, Bart.