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[68.160.176.52]) by smtp.gmail.com with ESMTPSA id o200-20020a37a5d1000000b0064904a35862sm7092093qke.96.2022.03.01.13.19.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 01 Mar 2022 13:19:43 -0800 (PST) Date: Tue, 1 Mar 2022 16:19:42 -0500 From: Mike Snitzer To: Ming Lei Cc: Jens Axboe , linux-block@vger.kernel.org, Jeffle Xu , dm-devel@redhat.com, Hannes Reinecke , Christoph Hellwig Subject: Re: [PATCH V3 0/3] block/dm: support bio polling Message-ID: References: <20210623074032.1484665-1-ming.lei@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Mon, Feb 28 2022 at 7:58P -0500, Ming Lei wrote: > On Mon, Feb 28, 2022 at 11:27:44AM -0500, Mike Snitzer wrote: > > > > Hey Ming, > > > > I'd like us to follow-through with adding bio-based polling support. > > Kind of strange none of us that were sent this V3 ever responded, > > sorry about that! > > > > Do you have interest in rebasing this patchset (against linux-dm.git's > > "dm-5.18" branch since there has been quite some churn)? Or are you > > OK with me doing the rebase? > > Hi Mike, > > Actually I have one local v5.17 rebase: > > https://github.com/ming1/linux/tree/my_v5.17-dm-io-poll > > Also one for-5.18/block rebase which is done just now: > > https://github.com/ming1/linux/tree/my_v5.18-dm-bio-poll > > In my previous test on v5.17 rebase, the IOPS improvement is a bit small, > so I didn't post it out. Recently not get time to investigate > the performance further, so please feel free to work on it. OK, I've rebased it on dm-5.18. Can you please share the exact test(s) you were running? I assume you were running directly against a request-based device and then comparing polling perf through dm-linear to the same underlying request-based device? Thanks, Mike