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=-0.7 required=3.0 tests=FORGED_MUA_MOZILLA, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 62231C43603 for ; Fri, 6 Dec 2019 08:50:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 331352467B for ; Fri, 6 Dec 2019 08:50:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726271AbfLFIuC (ORCPT ); Fri, 6 Dec 2019 03:50:02 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:9668 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725966AbfLFIuC (ORCPT ); Fri, 6 Dec 2019 03:50:02 -0500 Received: from pps.filterd (m0098409.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id xB68lH2R123798 for ; Fri, 6 Dec 2019 03:50:01 -0500 Received: from e06smtp07.uk.ibm.com (e06smtp07.uk.ibm.com [195.75.94.103]) by mx0a-001b2d01.pphosted.com with ESMTP id 2wq9gmtymm-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 06 Dec 2019 03:50:01 -0500 Received: from localhost by e06smtp07.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 6 Dec 2019 08:49:59 -0000 Received: from b06cxnps3074.portsmouth.uk.ibm.com (9.149.109.194) by e06smtp07.uk.ibm.com (192.168.101.137) with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Fri, 6 Dec 2019 08:49:56 -0000 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id xB68ntZt63242478 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 6 Dec 2019 08:49:55 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6DE10A4051; Fri, 6 Dec 2019 08:49:55 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id CEF21A405F; Fri, 6 Dec 2019 08:49:53 +0000 (GMT) Received: from [9.199.159.162] (unknown [9.199.159.162]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 6 Dec 2019 08:49:53 +0000 (GMT) Subject: Re: [PATCHv4 0/3] Fix inode_lock sequence to scale performance of DIO mixed R/W workload To: Joseph Qi , jack@suse.cz, tytso@mit.edu, linux-ext4@vger.kernel.org Cc: linux-fsdevel@vger.kernel.org, mbobrowski@mbobrowski.org References: <20191205064624.13419-1-riteshh@linux.ibm.com> <97fe59fa-0161-c035-40d0-3a9770ab426c@linux.alibaba.com> From: Ritesh Harjani Date: Fri, 6 Dec 2019 14:19:52 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 MIME-Version: 1.0 In-Reply-To: <97fe59fa-0161-c035-40d0-3a9770ab426c@linux.alibaba.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 x-cbid: 19120608-0028-0000-0000-000003C5C5A5 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19120608-0029-0000-0000-00002488EA68 Message-Id: <20191206084953.CEF21A405F@d06av23.portsmouth.uk.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,18.0.572 definitions=2019-12-06_02:2019-12-04,2019-12-06 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 adultscore=0 clxscore=1015 mlxscore=0 suspectscore=0 bulkscore=0 impostorscore=0 spamscore=0 mlxlogscore=999 phishscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1912060076 Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org On 12/6/19 2:16 PM, Joseph Qi wrote: > Tested with the following case: > > fio -name=parallel_dio_reads_test -filename=/mnt/nvme0n1/testfile \ > -direct=1 -iodepth=1 -thread -rw=randrw -ioengine=psync -bs=$bs \ > -size=20G -numjobs=8 -runtime=600 -group_reporting > > The performance result is the same as reverting parallel dio reads[1] > or even slightly better in both bandwidth and latency, which is as That's great!! > expected. > > So, Tested-by: Joseph Qi Thanks :) -ritesh