From: Pavel Begunkov <asml.silence@gmail.com>
To: Jens Axboe <axboe@kernel.dk>, linux-block@vger.kernel.org
Cc: Ming Lei <ming.lei@redhat.com>, Christoph Hellwig <hch@infradead.org>
Subject: [RFC 0/2] optimise split bio
Date: Tue, 5 Jan 2021 19:43:36 +0000 [thread overview]
Message-ID: <cover.1609875589.git.asml.silence@gmail.com> (raw)
With the no-copy bvec patches and nullb eats blk_bio_segment_split()
eats >7%. It adds yet another fast path for it.
8K 16K 32K 64K
before: 932 904 868 788
after: 934 919 902 862
Would appreciate if anyone knows off the bat typical queue_max_segments, etc.
numbers for NVMe.
Pavel Begunkov (2):
block: add a function for *segment_split fast path
block: add a fast path for seg split of large bio
block/blk-merge.c | 107 +++++++++++++++++++++++++++++-----------------
1 file changed, 68 insertions(+), 39 deletions(-)
--
2.24.0
next reply other threads:[~2021-01-05 19:48 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-05 19:43 Pavel Begunkov [this message]
2021-01-05 19:43 ` [RFC 1/2] block: add a function for *segment_split fast path Pavel Begunkov
2021-01-05 19:43 ` [RFC 2/2] block: add a fast path for seg split of large bio Pavel Begunkov
2021-01-05 20:36 ` Pavel Begunkov
2021-01-27 17:16 ` Christoph Hellwig
2021-01-28 11:56 ` Pavel Begunkov
2021-01-28 12:10 ` Ming Lei
2021-01-28 12:27 ` Pavel Begunkov
2021-01-29 2:00 ` Ming Lei
2021-02-01 10:59 ` Pavel Begunkov
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=cover.1609875589.git.asml.silence@gmail.com \
--to=asml.silence@gmail.com \
--cc=axboe@kernel.dk \
--cc=hch@infradead.org \
--cc=linux-block@vger.kernel.org \
--cc=ming.lei@redhat.com \
/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).