From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx3-rdu2.redhat.com ([66.187.233.73]:55226 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1754291AbeFVVni (ORCPT ); Fri, 22 Jun 2018 17:43:38 -0400 Date: Sat, 23 Jun 2018 05:43:17 +0800 From: Ming Lei To: Bart Van Assche Cc: Jens Axboe , "linux-scsi@vger.kernel.org" , "linux-block@vger.kernel.org" , Omar Sandoval , "Martin K. Petersen" , James Bottomley , Christoph Hellwig , Don Brace , Kashyap Desai , Mike Snitzer , Hannes Reinecke , Laurence Oberman Subject: Re: [PATCH 0/3] scsi: scsi-mq: don't hold host_busy in IO path Message-ID: <20180622214316.GC2949@ming.t460p> References: <20180420065742.8043-1-ming.lei@redhat.com> <994729bc-7ca4-6671-d454-d4612ce59b25@wdc.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <994729bc-7ca4-6671-d454-d4612ce59b25@wdc.com> Sender: linux-block-owner@vger.kernel.org List-Id: linux-block@vger.kernel.org On Fri, Jun 22, 2018 at 08:29:20AM -0700, Bart Van Assche wrote: > On 04/20/18 00:00, Ming Lei wrote: > > This patches removes the expensive atomic opeation on host-wide counter > > of .host_busy for scsi-mq, and it is observed that IOPS can be increased by > > 15% with this change in IO test over scsi_debug. > > Hello Ming, > > Do you want to resend these patches to Martin or do you perhaps that I do > that myself? Hi Bart, I will resend it later. thanks, Ming