From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx2.suse.de ([195.135.220.15]:56182 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966738AbdAKNnP (ORCPT ); Wed, 11 Jan 2017 08:43:15 -0500 Date: Wed, 11 Jan 2017 14:43:12 +0100 From: Johannes Thumshirn To: "lsf-pc@lists.linux-foundation.org" Cc: linux-block@vger.kernel.org, Linux-scsi@vger.kernel.org, Sagi Grimberg , linux-nvme@lists.infradead.org, Christoph Hellwig , Keith Busch Subject: [LSF/MM TOPIC][LSF/MM ATTEND] NAPI polling for block drivers Message-ID: <20170111134312.GH6286@linux-x5ow.site> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Sender: linux-block-owner@vger.kernel.org List-Id: linux-block@vger.kernel.org Hi all, I'd like to attend LSF/MM and would like to discuss polling for block drivers. Currently there is blk-iopoll but it is neither as widely used as NAPI in the networking field and accoring to Sagi's findings in [1] performance with polling is not on par with IRQ usage. On LSF/MM I'd like to whether it is desirable to have NAPI like polling in more block drivers and how to overcome the currently seen performance issues. [1] http://lists.infradead.org/pipermail/linux-nvme/2016-October/006975.html Byte, Johannes -- Johannes Thumshirn Storage jthumshirn@suse.de +49 911 74053 689 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 N�rnberg GF: Felix Imend�rffer, Jane Smithard, Graham Norton HRB 21284 (AG N�rnberg) Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850