From: Bart Van Assche <bvanassche@acm.org>
To: 章辉 <zhanghui31@xiaomi.com>, "axboe@kernel.dk" <axboe@kernel.dk>
Cc: "linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [External Mail]Re: [PATCH v3] block: move non sync requests complete flow to softirq
Date: Wed, 4 Sep 2024 10:22:27 -0700 [thread overview]
Message-ID: <a2cb0302-b333-4cea-aaea-4a7bae7024a9@acm.org> (raw)
In-Reply-To: <f669709a-b8e6-4c76-a75c-f3e7828e09f2@xiaomi.com>
On 9/3/24 8:35 PM, 章辉 wrote:
> Does set rq_affinity to 2 mean QUEUE_FLAG_SAME_COMP?
From block/blk-sysfs.c:
if (val == 2) {
blk_queue_flag_set(QUEUE_FLAG_SAME_COMP, q);
blk_queue_flag_set(QUEUE_FLAG_SAME_FORCE, q);
}
> This seems to determine on which core the current request is
> completed, rather than in the interrupt top or bottom half?
That's correct. I suggested this because I was wondering whether
spreading the I/O completion workload over more CPU cores would help?
Thanks,
Bart.
next prev parent reply other threads:[~2024-09-04 17:22 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-09-03 11:54 ZhangHui
2024-09-03 17:28 ` Bart Van Assche
2024-09-03 17:47 ` Jens Axboe
2024-09-04 3:35 ` [External Mail]Re: " 章辉
2024-09-04 17:22 ` Bart Van Assche [this message]
2024-09-05 3:05 ` 章辉
2024-09-03 17:49 ` Jens Axboe
2024-09-04 3:25 ` [External Mail]Re: " 章辉
2024-09-04 4:29 ` Christoph Hellwig
2024-09-05 2:52 ` [External Mail]Re: " 章辉
2024-09-04 8:01 ` Ming Lei
2024-09-05 2:46 ` [External Mail]Re: " 章辉
2024-09-05 3:49 ` Ming Lei
2024-09-05 7:33 ` 章辉
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