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 D4705C4167D for ; Wed, 1 Nov 2023 16:45:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231669AbjKAQp5 (ORCPT ); Wed, 1 Nov 2023 12:45:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36996 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231233AbjKAQp4 (ORCPT ); Wed, 1 Nov 2023 12:45:56 -0400 Received: from mail-pf1-f169.google.com (mail-pf1-f169.google.com [209.85.210.169]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E765110C; Wed, 1 Nov 2023 09:45:53 -0700 (PDT) Received: by mail-pf1-f169.google.com with SMTP id d2e1a72fcca58-6b709048f32so51007b3a.0; Wed, 01 Nov 2023 09:45:53 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1698857153; x=1699461953; 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=HShWGtQKfpCm3R1g2YQJwks+runHVlSK4U2xQP7+rJw=; b=CyMgr99UDmCjxc57wsi7Kho1KUL1nMkhtYk/FuNZnNyBAW2txrnJuXuWOmzLt5afIW MC/K1am0PDUDPkOJEAGNVr/vbC1RLA6b9bYbSZHidguqRZ/CP0S7Bni3ZMB/PQApUHgQ qmNU6JG10D4zu4wBKOMaPC5QRfqQTJDNkdQKYQN+aYeHWr7M8IIbE0ePC1id61a/rNhS oNcHPdmFQ7u7WONZSsjiR46u+gsEEtkGTYZmbZn4OmKoqkDPC4HP6r9gtYcZ8EkOXUhv 1b6PWgJFaHPdW/3APAFQide9YVgnnaU+5t2EzbrsD9yUJLq0HMf4qw9JizWViOCND7xR cK+w== X-Gm-Message-State: AOJu0YyGXxs71QXZxJ4vK1wJL1dfpRxnJBPzJDaup3kWGXFxOkSUWsf0 uZWXFVmVweyICPkNM+FSXHk= X-Google-Smtp-Source: AGHT+IEvWUmiw62j9GKtgIQhaMTq2wosTr2Yb141pNyQ3mQMR8cKVHrMgBkkuosP22aFkuyRN3ZYpg== X-Received: by 2002:a05:6a20:1614:b0:17b:62ae:a8aa with SMTP id l20-20020a056a20161400b0017b62aea8aamr15776276pzj.6.1698857153253; Wed, 01 Nov 2023 09:45:53 -0700 (PDT) Received: from ?IPV6:2620:15c:211:201:2312:f48f:8e12:6623? ([2620:15c:211:201:2312:f48f:8e12:6623]) by smtp.gmail.com with ESMTPSA id c9-20020a639609000000b005891f3af36asm108341pge.87.2023.11.01.09.45.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 01 Nov 2023 09:45:52 -0700 (PDT) Message-ID: Date: Wed, 1 Nov 2023 09:45:46 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: (2) [PATCH v3 01/14] fs: Move enum rw_hint into a new header file Content-Language: en-US To: daejun7.park@samsung.com, KANCHAN JOSHI , Jens Axboe Cc: "linux-block@vger.kernel.org" , "linux-scsi@vger.kernel.org" , "linux-fsdevel@vger.kernel.org" , "Martin K . Petersen" , Christoph Hellwig , Niklas Cassel , Avri Altman , Bean Huo , Jan Kara , Christian Brauner , Jaegeuk Kim , Chao Yu , Alexander Viro , Jeff Layton , Chuck Lever , Seonghun Kim , Jorn Lee , Sung-Jun Park , Hyunji Jeon , Dongwoo Kim , Seongcheol Hong , Jaeheon Lee , Wonjong Song , JinHwan Park , Yonggil Song , Soonyoung Kim , Shinwoo Park , Seokhwan Kim References: <9b0990ec-a3c9-48c0-b312-8c07c727e326@acm.org> <20231017204739.3409052-1-bvanassche@acm.org> <20231017204739.3409052-2-bvanassche@acm.org> <20231101063910epcms2p18f991db15958f246fa1654f2d412e176@epcms2p1> From: Bart Van Assche In-Reply-To: <20231101063910epcms2p18f991db15958f246fa1654f2d412e176@epcms2p1> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On 10/31/23 23:39, Daejun Park wrote: >> On 10/30/23 04:11, Kanchan Joshi wrote: >>> On 10/18/2023 2:17 AM, Bart Van Assche wrote: >> Thanks for having taken a look at this patch series. Jens asked for data >> that shows that this patch series improves performance. Is this >> something Samsung can help with? > > We analyzed the NAND block erase counter with and without stream separation > through a long-term workload in F2FS. > The analysis showed that the erase counter is reduced by approximately 40% > with stream seperation. > Long-term workload is a scenario where erase and write are repeated by > stream after performing precondition fill for each temperature of F2FS. Hi Daejun, Thank you for having shared this data. This is very helpful. Since I'm not familiar with the erase counter: does the above data perhaps mean that write amplification is reduced by 40% in the workload that has been examined? Thanks, Bart.