Re: [LSF/MM TOPIC][LSF/MM ATTEND] NAPI polling for block drivers

hch
2017-01-11T16:12:38Z

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.