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=-5.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE, SPF_PASS,UNPARSEABLE_RELAY,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 8D377C433E0 for ; Wed, 24 Feb 2021 01:45:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3A37164E79 for ; Wed, 24 Feb 2021 01:45:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231287AbhBXBpd (ORCPT ); Tue, 23 Feb 2021 20:45:33 -0500 Received: from out30-131.freemail.mail.aliyun.com ([115.124.30.131]:47383 "EHLO out30-131.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231154AbhBXBpb (ORCPT ); Tue, 23 Feb 2021 20:45:31 -0500 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R481e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e01424;MF=jefflexu@linux.alibaba.com;NM=1;PH=DS;RN=10;SR=0;TI=SMTPD_---0UPPc0lB_1614131089; Received: from admindeMacBook-Pro-2.local(mailfrom:jefflexu@linux.alibaba.com fp:SMTPD_---0UPPc0lB_1614131089) by smtp.aliyun-inc.com(127.0.0.1); Wed, 24 Feb 2021 09:44:49 +0800 Subject: Re: [PATCH v4 00/12] dm: support IO polling To: Mike Snitzer Cc: axboe@kernel.dk, hch@lst.de, ming.lei@redhat.com, linux-block@vger.kernel.org, dm-devel@redhat.com, io-uring@vger.kernel.org, joseph.qi@linux.alibaba.com, caspar@linux.alibaba.com, Mikulas Patocka References: <20210220110637.50305-1-jefflexu@linux.alibaba.com> <20210223205434.GB25684@redhat.com> From: JeffleXu Message-ID: <5c4e6bab-63be-f390-55a8-3f700eebf98b@linux.alibaba.com> Date: Wed, 24 Feb 2021 09:44:49 +0800 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Thunderbird/78.7.0 MIME-Version: 1.0 In-Reply-To: <20210223205434.GB25684@redhat.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 2/24/21 4:54 AM, Mike Snitzer wrote: > On Mon, Feb 22 2021 at 10:55pm -0500, > JeffleXu wrote: > >> >> >> On 2/20/21 7:06 PM, Jeffle Xu wrote: >>> [Changes since v3] >>> - newly add patch 7 and patch 11, as a new optimization improving >>> performance of multiple polling processes. Now performance of multiple >>> polling processes can be as scalable as single polling process (~30%). >>> Refer to the following [Performance] chapter for more details. >>> >> >> Hi Mike, would please evaluate this new version patch set? I think this >> mechanism is near maturity, since multi-thread performance is as >> scalable as single-thread (~30%) now. > > OK, can do. But first I think you need to repost with a v5 that > addresses Mikulas' v3 feedback: > > https://listman.redhat.com/archives/dm-devel/2021-February/msg00254.html > https://listman.redhat.com/archives/dm-devel/2021-February/msg00255.html > Will do. Besides I will also rebase to 5.12 in the next version. -- Thanks, Jeffle