Re: [PATCH v5 0/2] io_uring: Add support for napi_busy_poll

Jens Axboe
2022-03-09T01:11:24Z

On 3/8/22 3:17 PM, Olivier Langlois wrote:
> The sqpoll thread can be used for performing the napi busy poll in a
> similar way that it does io polling for file systems supporting direct
> access bypassing the page cache.
>
> The other way that io_uring can be used for napi busy poll is by
> calling io_uring_enter() to get events.
>
> If the user specify a timeout value, it is distributed between polling
> and sleeping by using the systemwide setting
> /proc/sys/net/core/busy_poll.

I think we should get this queued up, but it doesn't apply to
for-5.18/io_uring at all. I can fix it up, but just curious what you
tested against?

--
Jens Axboe