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From: Jens Axboe <axboe@kernel.dk>
To: linux-block@vger.kernel.org
Cc: hch@infradead.org
Subject: [PATCHSET 0/4] Add support for list issue
Date: Tue, 16 Nov 2021 20:38:03 -0700	[thread overview]
Message-ID: <20211117033807.185715-1-axboe@kernel.dk> (raw)

Hi,

With the support in 5.16-rc1 for allocating and completing batches of
IO, the one missing piece is passing down a list of requests for issue.
Drivers can take advantage of this by defining an mq_ops->queue_rqs()
hook.

This implements it for NVMe, allowing copy of multiple commands in one
swoop.

This is good for around a 500K IOPS/core improvement in my testing,
which is around a 5-6% improvement in efficiency.

-- 
Jens Axboe



             reply	other threads:[~2021-11-17  3:38 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-17  3:38 Jens Axboe [this message]
2021-11-17  3:38 ` [PATCH 1/4] block: add mq_ops->queue_rqs hook Jens Axboe
2021-11-17  6:25   ` Christoph Hellwig
2021-11-17 15:41     ` Jens Axboe
2021-11-17  8:20   ` Ming Lei
2021-11-17 15:43     ` Jens Axboe
2021-11-17 20:48       ` Keith Busch
2021-11-17 23:59         ` Ming Lei
2021-11-17 20:41   ` Keith Busch
2021-11-18  0:18     ` Ming Lei
2021-11-18  2:02       ` Keith Busch
2021-11-18  2:14         ` Ming Lei
2021-11-17  3:38 ` [PATCH 2/4] nvme: split command copy into a helper Jens Axboe
2021-11-17  6:15   ` Christoph Hellwig
2021-11-17 15:44     ` Jens Axboe
2021-11-18  7:54   ` Chaitanya Kulkarni
2021-11-17  3:38 ` [PATCH 3/4] nvme: separate command prep and issue Jens Axboe
2021-11-17  6:17   ` Christoph Hellwig
2021-11-17 15:45     ` Jens Axboe
2021-11-18  7:59     ` Chaitanya Kulkarni
2021-11-17  3:38 ` [PATCH 4/4] nvme: add support for mq_ops->queue_rqs() Jens Axboe
2021-11-17  8:39   ` Christoph Hellwig
2021-11-17 15:55     ` Jens Axboe
2021-11-17 15:58       ` Jens Axboe
2021-11-17 19:41   ` Keith Busch

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