On 01/11/2017 08:07 AM, Jens Axboe wrote:

On 01/11/2017 06:43 AM, Johannes Thumshirn wrote:

quoted

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.

It would be an interesting topic to discuss, as it is a shame that blk-iopoll
isn't used more widely.

Forgot to mention - it should only be a topic, if experimentation has
been done and results gathered to pin point what the issues are, so we
have something concrete to discus. I'm not at all interested in a hand
wavy discussion on the topic.

-- 
Jens Axboe