On 9/22/19 2:08 AM, Pavel Begunkov (Silence) wrote:

From: Pavel Begunkov <asml.silence@gmail.com>

There could be a lot of overhead within generic wait_event_*() used for
waiting for large number of completions. The patchset removes much of
it by using custom wait event (wait_threshold).

Synthetic test showed ~40% performance boost. (see patch 2)

I'm fine with the io_uring side of things, but to queue this up we
really need Peter or Ingo to sign off on the core wakeup bits...

Peter?

-- 
Jens Axboe