Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752912AbdGFHMe (ORCPT ); Thu, 6 Jul 2017 03:12:34 -0400 Received: from mail-vk0-f66.google.com ([209.85.213.66]:33935 "EHLO mail-vk0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752315AbdGFHMd (ORCPT ); Thu, 6 Jul 2017 03:12:33 -0400 MIME-Version: 1.0 In-Reply-To: <20170706025421.GB5222@yexl-desktop> References: <20170703025722.GG7070@yexl-desktop> <20170706025421.GB5222@yexl-desktop> From: Ming Lei Date: Thu, 6 Jul 2017 15:12:31 +0800 Message-ID: Subject: Re: [lkp-robot] [scsi] 5c279bd9e4: blogbench.read_score -10.0% regression To: Ye Xiaolong Cc: Christoph Hellwig , "Martin K. Petersen" , LKML , "James E.J. Bottomley" , Linux SCSI List , LKP ML Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 803 Lines: 28 On Thu, Jul 6, 2017 at 10:54 AM, Ye Xiaolong wrote: > Hi, Ming Lei > > On 07/06, Ming Lei wrote: >>Hi Xiaolong, >> >>On Mon, Jul 3, 2017 at 10:57 AM, kernel test robot >> wrote: >>> >>> Greeting, >>> >>> FYI, we noticed a -10.0% regression of blogbench.read_score due to commit: >> >>Looks like related with mq scheduler, could you test the following patch to see >>if your issue can be fixed? >> >>https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git/commit/?h=for-linus&id=32825c45ff8f4cce937ab85b030dc693ceb1aa0a >> > > Here is the comparison of commit 5c279bd9e4 and 32825c45, it does help recover > performance back. That is great, thanks for your test! This patch has been in block tree, and will be pushed to v4.13. Thanks, Ming