netdev - [PATCHSET v16 0/7] io_uring: add napi busy polling support

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Message-ID: <20240206163422.646218-1-axboe@kernel.dk>
Date: Tue,  6 Feb 2024 09:30:02 -0700
From: Jens Axboe <axboe@...nel.dk>
To: io-uring@...r.kernel.org,
	netdev@...r.kernel.org
Cc: kuba@...nel.org,
	olivier@...llion01.com
Subject: [PATCHSET v16 0/7] io_uring: add napi busy polling support

Hi,

I finally got around to testing this patchset in its current form, and
results look fine to me. It Works. Using the basic ping/pong test that's
part of the liburing addition, without enabling NAPI I get:

Stock settings, no NAPI, 100k packets:

 rtt(us) min/avg/max/mdev = 31.730/37.006/87.960/0.497

 and with -t10 -b enabled:

 rtt(us) min/avg/max/mdev = 23.250/29.795/63.511/1.203

In short, this patchset enables per io_uring NAPI enablement, rather
than need to enable that globally. This allows targeted NAPI usage with
io_uring.

Here's Stefan's v15 posting, which predates this one:

https://lore.kernel.org/io-uring/20230608163839.2891748-1-shr@devkernel.io/

Patches are on top of the current 6.9 io_uring branch.

Changes since v15
- Rebase on current tree
- Various cleanups
- Rename NAPI_F_NO_SCHED to NAPI_F_END_ON_RESCHED

-- 
Jens Axboe