linux-kernel - Re: Re: [PATCH v9 1/1] io_uring: releasing CPU resources when polling

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Message-Id: <20241104072907.768671-1-xue01.he@samsung.com>
Date: Mon,  4 Nov 2024 15:29:07 +0800
From: hexue <xue01.he@...sung.com>
To: axboe@...nel.dk
Cc: asml.silence@...il.com, io-uring@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: Re: [PATCH v9 1/1] io_uring: releasing CPU resources when
 polling

On 11/1/2024 08:06, Jens Axboe wrote:
>On 11/1/24 3:19 AM, hexue wrote:
>> A new hybrid poll is implemented on the io_uring layer. Once IO issued,
>> it will not polling immediately, but block first and re-run before IO
>> complete, then poll to reap IO. This poll function could be a suboptimal
>> solution when running on a single thread, it offers the performance lower
>> than regular polling but higher than IRQ, and CPU utilization is also lower
>> than polling.
>
>This looks much better now.
>
>Do you have a patch for liburing to enable testing of hybrid polling
>as well? Don't care about perf numbers for that, but it should get
>exercised.

Sure, I'll add some liburing test cases and submit patch soon.
Thank you.

--
Xue