Re: [LSF/MM TOPIC][LSF/MM ATTEND] NAPI polling for block drivers
From: "hch@infradead.org" <hch@infradead.org>
Date: 2017-01-11 16:12:38
Also in:
linux-nvme, linux-scsi
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.