Re: [PATCH 09/13] io_uring: add submission polling

On Mon, Jan 28, 2019 at 10:05:37AM -0700, Jens Axboe wrote:

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2) Probably want the application to pass in the appropriate grace
   period, not hard code it at 1 second.

2) actually sounds really useful.  Should we look into it ASAP?

I think so. Question is what kind of granularity we need for this. I
think we can go pretty coarse and keep it in msec, using a short to
pass this in like we do for the thread CPU. That gives us 0..65535 msec,
which should be plenty of range.

msec granualarity sounds fine.  But is it really worth using a short
instead of a 32-bit value these days?

Also 16385 seems very limiting for a cpu value, especially as our
normal cpu ids are ints.