From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Date: Wed, 11 Jan 2017 08:12:38 -0800 From: "hch@infradead.org" To: Bart Van Assche Cc: "jthumshirn@suse.de" , "lsf-pc@lists.linux-foundation.org" , "Linux-scsi@vger.kernel.org" , "hch@infradead.org" , "keith.busch@intel.com" , "linux-nvme@lists.infradead.org" , "linux-block@vger.kernel.org" , "sagi@grimberg.me" Subject: Re: [LSF/MM TOPIC][LSF/MM ATTEND] NAPI polling for block drivers Message-ID: <20170111161238.GA18881@infradead.org> References: <20170111134312.GH6286@linux-x5ow.site> <1484150893.2619.1.camel@sandisk.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <1484150893.2619.1.camel@sandisk.com> Sender: linux-scsi-owner@vger.kernel.org List-ID: On Wed, Jan 11, 2017 at 04:08:31PM +0000, Bart Van Assche wrote: > A typical Ethernet network adapter delays the generation of an interrupt > after it has received a packet. A typical block device or HBA does not delay > the generation of an interrupt that reports an I/O completion. NVMe allows for configurable interrupt coalescing, as do a few modern SCSI HBAs.