From: Ming Lei <ming.lei@redhat.com> To: linux-nvme@lists.infradead.org Cc: Sagi Grimberg <sagi@grimberg.me>, Long Li <longli@microsoft.com>, Ming Lei <ming.lei@redhat.com>, Jens Axboe <axboe@fb.com>, Keith Busch <kbusch@kernel.org>, Christoph Hellwig <hch@lst.de> Subject: [PATCH 0/2] nvme-pci: improve IO performance via poll after batch submission Date: Fri, 8 Nov 2019 11:55:06 +0800 Message-ID: <20191108035508.26395-1-ming.lei@redhat.com> (raw) Hi, In case that single nvme queue is mapped from multiple blk-mq sw queue, this patchset improves IO handling by polling after batch submission. Turns out that IOPS is improved much in single job aio test. Also it is observed that the CPU lockup issue in Hyper V guest can't be triggered any more after this patch is applied. Thanks, Ming Lei (2): nvme-pci: move sq/cq_poll lock initialization into nvme_init_queue nvme-pci: poll IO after batch submission for multi-mapping queue drivers/nvme/host/pci.c | 93 ++++++++++++++++++++++++++++++++++++----- 1 file changed, 82 insertions(+), 11 deletions(-) Cc: Keith Busch <kbusch@kernel.org> Cc: Jens Axboe <axboe@fb.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Sagi Grimberg <sagi@grimberg.me> Cc: Long Li <longli@microsoft.com> -- 2.20.1 _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme
next reply index Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-11-08 3:55 Ming Lei [this message] 2019-11-08 3:55 ` [PATCH 1/2] nvme-pci: move sq/cq_poll lock initialization into nvme_init_queue Ming Lei 2019-11-08 4:12 ` Keith Busch 2019-11-08 7:09 ` Ming Lei 2019-11-08 3:55 ` [PATCH 2/2] nvme-pci: poll IO after batch submission for multi-mapping queue Ming Lei 2019-11-11 20:44 ` Christoph Hellwig 2019-11-12 0:33 ` Long Li 2019-11-12 1:35 ` Sagi Grimberg 2019-11-12 2:39 ` Ming Lei 2019-11-12 16:25 ` Hannes Reinecke 2019-11-12 16:49 ` Keith Busch 2019-11-12 17:29 ` Hannes Reinecke 2019-11-13 3:05 ` Ming Lei 2019-11-13 3:17 ` Keith Busch 2019-11-13 3:57 ` Ming Lei 2019-11-12 21:20 ` Long Li 2019-11-12 21:36 ` Keith Busch 2019-11-13 0:50 ` Long Li 2019-11-13 2:24 ` Ming Lei 2019-11-12 2:07 ` Ming Lei 2019-11-12 1:44 ` Sagi Grimberg 2019-11-12 9:56 ` Ming Lei 2019-11-12 17:35 ` Sagi Grimberg 2019-11-12 21:17 ` Long Li 2019-11-12 23:44 ` Jens Axboe 2019-11-13 2:47 ` Ming Lei 2019-11-12 18:11 ` Nadolski, Edmund 2019-11-13 13:46 ` Ming Lei
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=20191108035508.26395-1-ming.lei@redhat.com \ --to=ming.lei@redhat.com \ --cc=axboe@fb.com \ --cc=hch@lst.de \ --cc=kbusch@kernel.org \ --cc=linux-nvme@lists.infradead.org \ --cc=longli@microsoft.com \ --cc=sagi@grimberg.me \ /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
Linux-NVME Archive on lore.kernel.org Archives are clonable: git clone --mirror https://lore.kernel.org/linux-nvme/0 linux-nvme/git/0.git # If you have public-inbox 1.1+ installed, you may # initialize and index your mirror using the following commands: public-inbox-init -V2 linux-nvme linux-nvme/ https://lore.kernel.org/linux-nvme \ linux-nvme@lists.infradead.org public-inbox-index linux-nvme Example config snippet for mirrors Newsgroup available over NNTP: nntp://nntp.lore.kernel.org/org.infradead.lists.linux-nvme AGPL code for this site: git clone https://public-inbox.org/public-inbox.git