linux-kernel - Re: [PATCH v6] io_uring: releasing CPU resources when polling

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Message-Id: <20240709085941.3195547-1-wenwen.chen@samsung.com>
Date: Tue,  9 Jul 2024 16:59:41 +0800
From: Wenwen Chen <wenwen.chen@...sung.com>
To: xue01.he@...sung.com
Cc: axboe@...nel.dk, asml.silence@...il.com, io-uring@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6] io_uring: releasing CPU resources when polling

Sorry for bad format, here is the test results maybe looks better:

Performance
-------------------------------------------------------------------------------------
                  write          read           randwrite       randread
regular poll    BW=3939MiB/s    BW=6596MiB/s    IOPS=190K       IOPS=526K
IRQ             BW=3927MiB/s    BW=6567MiB/s    IOPS=181K       IOPS=216K
hybrid poll     BW=3933MiB/s    BW=6600MiB/s    IOPS=190K       IOPS=390K(suboptimal)
-------------------------------------------------------------------------------------
CPU Utilization
-------------------------------------------------------------------------------------
                write   read    randwrite       randread
regular poll    100%    100%    100%            100%
IRQ             38%     53%     100%            100%
hybrid poll     76%     32%     70%              85%
-------------------------------------------------------------------------------------

--
hexue