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 X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B6FC6C433DB for ; Tue, 9 Mar 2021 06:22:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 829036528C for ; Tue, 9 Mar 2021 06:22:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229656AbhCIGVx (ORCPT ); Tue, 9 Mar 2021 01:21:53 -0500 Received: from mail-m17635.qiye.163.com ([59.111.176.35]:43548 "EHLO mail-m17635.qiye.163.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229524AbhCIGVe (ORCPT ); Tue, 9 Mar 2021 01:21:34 -0500 Received: from vivo-HP-ProDesk-680-G4-PCI-MT.vivo.xyz (unknown [58.251.74.231]) by mail-m17635.qiye.163.com (Hmail) with ESMTPA id E85CB400410; Tue, 9 Mar 2021 14:21:12 +0800 (CST) From: Wang Qing To: daejun7.park@samsung.com, Alim Akhtar , Avri Altman , "James E.J. Bottomley" , "Martin K. Petersen" , Stanley Chu , Can Guo , Bean Huo , Jaegeuk Kim , Asutosh Das , linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org Cc: kaixian.yang@vivo.com, wangqing@vivo.com Subject: [Resend]Re: [PATCH] [v26,1/4] scsi: ufs: Introduce HPB feature Date: Tue, 9 Mar 2021 14:21:02 +0800 Message-Id: <1615270866-32000-1-git-send-email-wangqing@vivo.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <20210303062800epcms2p1c14c69e74782f25aaaef808ae625d701@epcms2p1> References: <20210303062800epcms2p1c14c69e74782f25aaaef808ae625d701@epcms2p1> X-HM-Spam-Status: e1kfGhgUHx5ZQUtXWQgYFAkeWUFZS1VLWVdZKFlBSE83V1ktWUFJV1kPCR oVCBIfWUFZHh5DTx5ISElLQ0xNVkpNSk5JTEtDQ0pLT0tVEwETFhoSFyQUDg9ZV1kWGg8SFR0UWU FZT0tIVUpKS0hNSlVLWQY+ X-HM-Sender-Digest: e1kMHhlZQR0aFwgeV1kSHx4VD1lBWUc6Nhg6LBw*LT8RMQ5DIhUwNTYu PlEaCx1VSlVKTUpOSUxLQ0NKQ0NJVTMWGhIXVQwaFRwKEhUcOw0SDRRVGBQWRVlXWRILWUFZTkNV SU5KVUxPVUlISllXWQgBWUFIS05CNwY+ X-HM-Tid: 0a7815a5a3ced991kuwse85cb400410 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >The Following is experiment environment: > - kernel version: 4.4.0 > - RAM: 8GB > - UFS 2.1 (64GB) > >Result: >+-------+----------+----------+-------+ >| cycle | baseline | with HPB | diff | >+-------+----------+----------+-------+ >| 1 | 272.4 | 264.9 | -7.5 | >| 2 | 250.4 | 248.2 | -2.2 | >| 3 | 226.2 | 215.6 | -10.6 | >| 4 | 230.6 | 214.8 | -15.8 | >| 5 | 232.0 | 218.1 | -13.9 | >| 6 | 231.9 | 212.6 | -19.3 | >+-------+----------+----------+-------+ > >We also measured HPB performance using iozone. >Here is my iozone script: >iozone -r 4k -+n -i2 -ecI -t 16 -l 16 -u 16 >-s $IO_RANGE/16 -F mnt/tmp_1 mnt/tmp_2 mnt/tmp_3 mnt/tmp_4 mnt/tmp_5 >mnt/tmp_6 mnt/tmp_7 mnt/tmp_8 mnt/tmp_9 mnt/tmp_10 mnt/tmp_11 mnt/tmp_12 >mnt/tmp_13 mnt/tmp_14 mnt/tmp_15 mnt/tmp_16 > >Result: >+----------+--------+---------+ >| IO range | HPB on | HPB off | >+----------+--------+---------+ >| 1 GB | 294.8 | 300.87 | >| 4 GB | 293.51 | 179.35 | >| 8 GB | 294.85 | 162.52 | >| 16 GB | 293.45 | 156.26 | >| 32 GB | 277.4 | 153.25 | >+----------+--------+---------+ According to Samsung's iozone test result, HPB is going to boost random performance of rom on mobile, we believe it will help our customers on several occasions. WangQing