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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


WARNING: multiple messages have this Message-ID (diff)
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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             reply	other threads:[~2020-07-26  0:23 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-26  0:22 Sagi Grimberg [this message]
2020-07-26  0:22 ` [PATCH v3 0/2] improve quiesce time for large amount of namespaces Sagi Grimberg
2020-07-26  0:23 ` [PATCH v3 1/2] blk-mq: add async quiesce interface Sagi Grimberg
2020-07-26  0:23   ` Sagi Grimberg
2020-07-26  9:31   ` Ming Lei
2020-07-26  9:31     ` Ming Lei
2020-07-26 16:27     ` Sagi Grimberg
2020-07-26 16:27       ` Sagi Grimberg
2020-07-27  2:08       ` Ming Lei
2020-07-27  2:08         ` Ming Lei
2020-07-27  3:33         ` Chao Leng
2020-07-27  3:33           ` Chao Leng
2020-07-27  3:50           ` Ming Lei
2020-07-27  3:50             ` Ming Lei
2020-07-27  5:55             ` Chao Leng
2020-07-27  5:55               ` Chao Leng
2020-07-27  6:32               ` Ming Lei
2020-07-27  6:32                 ` Ming Lei
2020-07-27 18:40                 ` Sagi Grimberg
2020-07-27 18:40                   ` Sagi Grimberg
2020-07-27 18:38             ` Sagi Grimberg
2020-07-27 18:38               ` Sagi Grimberg
2020-07-27 18:36         ` Sagi Grimberg
2020-07-27 18:36           ` Sagi Grimberg
2020-07-27 20:37           ` Jens Axboe
2020-07-27 20:37             ` Jens Axboe
2020-07-27 21:00             ` Sagi Grimberg
2020-07-27 21:00               ` Sagi Grimberg
2020-07-27 21:05               ` Jens Axboe
2020-07-27 21:05                 ` Jens Axboe
2020-07-27 21:21                 ` Keith Busch
2020-07-27 21:21                   ` Keith Busch
2020-07-27 21:30                   ` Jens Axboe
2020-07-27 21:30                     ` Jens Axboe
2020-07-28  1:09               ` Ming Lei
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
2020-07-26  0:23   ` Sagi Grimberg

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