Received: by 2002:a25:824b:0:0:0:0:0 with SMTP id d11csp806062ybn; Tue, 24 Sep 2019 09:47:16 -0700 (PDT) X-Google-Smtp-Source: APXvYqwhEHsyL2IND12BECXoZYf3Fkx71adYgHLOscEnyUPl9FHuyPmC+G08ybye0Tj/7BrXmA2K X-Received: by 2002:a17:906:52d1:: with SMTP id w17mr3547395ejn.58.1569343636577; Tue, 24 Sep 2019 09:47:16 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1569343636; cv=none; d=google.com; s=arc-20160816; b=nVuWrgWsCslLIa7JWy0NveAKhw0RFr5WkO9zq4/w3nrSwkbAFs9RZZliw523H0lxkP 8XJzfZ6aDRycuBhcjkJpJgHvvmOccrS9JfNV8tRtG1e5247T0xWWjrnqdElSKxbdQgip yW0GxCB1cCsRQgVFmc8NzqCmOlY+K2ZxLWJO9+JXx0T2/2Du9RqgCA7blW2l9HoFG234 qDNobw7YeQDbsDqrTk/BsdoW47tyR0gVOoLgnThuJyKlCPO2vWpwFUHcmoCh83gzmG1n 6PzjKOgJyKL6FAxzQmtFXFpq1d1+ilfKcZVytJYSIZYO/BSUunZbke1/PZz8svrjliI0 ucUg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:message-id:content-transfer-encoding :content-language:in-reply-to:mime-version:user-agent:date:from :references:cc:to:subject; bh=AwoZi+3FY1yMU92YiPP7eA8Es2uA4TSN973XiyfYuqs=; b=x2PKGOzlY9tR7GP4KgPK5OkA6BvdSfvv1CXuRse7XZUQbXAdNVivS2wR/LkCW3equr 7/2smwlFQD9ahTYwX4oHaTTU7bX/bqNOqRUBxdPCzZxvESpEymCEDX8CTLLOBtaubOgn Qp6N7sF/jUHnJhVQOWkP8BKlzr670kzHGL5Iumv49tqRBhVOXL8ogNTgfXnd/DidsEXb Moqkupxxj7OoPtQdoCv4iHuPaeXHLszbleFdIOgJ24EQJfDwqs5Qq4ca9X54p/5KLuSt MLvaTP+dOPm5FuBLGyQBm6EDQXFbDmaRTWNRz2qv45fBbjsnralty9eUnS+6v6ekrbH7 HQMQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-ext4-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-ext4-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=ibm.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id k63si1608251edc.347.2019.09.24.09.46.52; Tue, 24 Sep 2019 09:47:16 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-ext4-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-ext4-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-ext4-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=ibm.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392974AbfIWGTO (ORCPT + 99 others); Mon, 23 Sep 2019 02:19:14 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:30012 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387519AbfIWGTO (ORCPT ); Mon, 23 Sep 2019 02:19:14 -0400 Received: from pps.filterd (m0098394.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x8N6Gqp9007248 for ; Mon, 23 Sep 2019 02:19:13 -0400 Received: from e06smtp07.uk.ibm.com (e06smtp07.uk.ibm.com [195.75.94.103]) by mx0a-001b2d01.pphosted.com with ESMTP id 2v6mvjp965-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Mon, 23 Sep 2019 02:19:13 -0400 Received: from localhost by e06smtp07.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 23 Sep 2019 07:19:10 +0100 Received: from b06cxnps4074.portsmouth.uk.ibm.com (9.149.109.196) 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) Mon, 23 Sep 2019 07:19:06 +0100 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x8N6J59D48758964 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 23 Sep 2019 06:19:05 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 86F6AA405B; Mon, 23 Sep 2019 06:19:05 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 17EA5A405C; Mon, 23 Sep 2019 06:19:04 +0000 (GMT) Received: from [9.199.158.218] (unknown [9.199.158.218]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTP; Mon, 23 Sep 2019 06:19:03 +0000 (GMT) Subject: Re: [RFC 0/2] ext4: Improve locking sequence in DIO write path To: Joseph Qi , jack@suse.cz, tytso@mit.edu, linux-ext4@vger.kernel.org Cc: david@fromorbit.com, hch@infradead.org, adilger@dilger.ca, mbobrowski@mbobrowski.org, rgoldwyn@suse.de References: <20190917103249.20335-1-riteshh@linux.ibm.com> <20190918100336.3A4DA11C050@d06av25.portsmouth.uk.ibm.com> From: Ritesh Harjani Date: Mon, 23 Sep 2019 11:49:03 +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: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 x-cbid: 19092306-0028-0000-0000-000003A15B41 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19092306-0029-0000-0000-000024636AA3 Message-Id: <20190923061904.17EA5A405C@b06wcsmtp001.portsmouth.uk.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-09-23_02:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=486 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1908290000 definitions=main-1909230061 Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org > Finally, I got hold of some HW. I am collecting the numbers as we speak. > Will post those tomorrow. I have sent RFC-v2 with comprehensive set of performance numbers and charts. It could be found below. https://marc.info/?l=linux-ext4&m=156921748126221&w=2 Please take a look at it. -ritesh