From: Sagi Grimberg <sagi@grimberg.me>
To: linux-nvme@lists.infradead.org, Christoph Hellwig <hch@lst.de>,
Keith Busch <kbusch@kernel.org>, Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org, Chao Leng <lengchao@huawei.com>
Subject: [PATCH v3 0/2] improve quiesce time for large amount of namespaces
Date: Sat, 25 Jul 2020 17:22:59 -0700 [thread overview]
Message-ID: <20200726002301.145627-1-sagi@grimberg.me> (raw)
This set attempts to improve the quiesce time when using a large set of
namespaces, which also improves I/O failover time in a multipath environment.
We improve for both non-blocking hctxs (e.g. pci, fc, rdma) and blocking
hctxs (e.g. tcp) by splitting queue auiesce to async call_(s)rcu and
async_wait to wait for it to complete.
Changes from v2:
- made blk_mq_quiesce_queue_async operate on both blocking and
non-blocking hctxs.
- removed separation between blocking vs. non-blocking queues
- dropeed patch from Chao
- dropped nvme-rdma test patch
Changes from v1:
- trivial typo fixes
Sagi Grimberg (2):
blk-mq: add async quiesce interface
nvme: improve quiesce time for large amount of namespaces
block/blk-mq.c | 32 ++++++++++++++++++++++++++++++++
drivers/nvme/host/core.c | 4 +++-
include/linux/blk-mq.h | 4 ++++
3 files changed, 39 insertions(+), 1 deletion(-)
--
2.25.1
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next reply other threads:[~2020-07-26 0:23 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-26 0:22 Sagi Grimberg [this message]
2020-07-26 0:23 ` [PATCH v3 1/2] blk-mq: add async quiesce interface Sagi Grimberg
2020-07-26 9:31 ` Ming Lei
2020-07-26 16:27 ` Sagi Grimberg
2020-07-27 2:08 ` Ming Lei
2020-07-27 3:33 ` Chao Leng
2020-07-27 3:50 ` Ming Lei
2020-07-27 5:55 ` Chao Leng
2020-07-27 6:32 ` Ming Lei
2020-07-27 18:40 ` Sagi Grimberg
2020-07-27 18:38 ` Sagi Grimberg
2020-07-27 18:36 ` Sagi Grimberg
2020-07-27 20:37 ` Jens Axboe
2020-07-27 21:00 ` Sagi Grimberg
2020-07-27 21:05 ` Jens Axboe
2020-07-27 21:21 ` Keith Busch
2020-07-27 21:30 ` Jens Axboe
2020-07-28 1:09 ` Ming Lei
2020-07-26 0:23 ` [PATCH v3 2/2] nvme: improve quiesce time for large amount of namespaces Sagi Grimberg
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