Re: [External Mail]Re: [PATCH v3] block: move non sync requests complete flow to softirq

[Bart Van Assche]

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.