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
next 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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20211117033807.185715-1-axboe@kernel.dk \
--to=axboe@kernel.dk \
--cc=hch@infradead.org \
--cc=linux-block@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).