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Date: Thu, 21 Mar 2024 23:48:14 +0100
From: Christoph Hellwig <hch@lst.de>
To: Bart Van Assche <bvanassche@acm.org>
Cc: Jens Axboe <axboe@kernel.dk>, linux-block@vger.kernel.org,
	Christoph Hellwig <hch@lst.de>, Hannes Reinecke <hare@suse.de>,
	Ming Lei <ming.lei@redhat.com>, Yu Kuai <yukuai3@huawei.com>
Subject: Re: [PATCH] block: Improve IOPS by removing the fairness code
Message-ID: <20240321224814.GA23127@lst.de>
References: <20240321224605.107783-1-bvanassche@acm.org>
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On Thu, Mar 21, 2024 at 03:46:05PM -0700, Bart Van Assche wrote:
> There is an algorithm in the block layer for maintaining fairness
> across queues that share a tag set. The sbitmap implementation has
> improved so much that we don't need the block layer fairness algorithm
> anymore and that we can rely on the sbitmap implementation to guarantee
> fairness.

IFF that was true it would be awesome.  But do you have proof for that
assertation?