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, Ming Lin <mlin@kernel.org>, Chao Leng <lengchao@huawei.com> Subject: [PATCH v4 0/2] improve quiesce time for large amount of namespaces Date: Mon, 27 Jul 2020 15:07:15 -0700 [thread overview] Message-ID: <20200727220717.278116-1-sagi@grimberg.me> (raw) This set improves 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 nvme transports) and blocking hctxs (e.g. tcp nvme transport) by splitting queue quiesce to blk_mq_quiesce_queue_async call_(s)rcu and blk_mq_quiesce_queue_async_wait to wait for it to complete. These calls are meant to be called in parallel for different queues. Changes from v3: - make hctx->rcu_sync dynamically allocated from the heap instead of a static member function 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 | 46 ++++++++++++++++++++++++++++++++++++++++ drivers/nvme/host/core.c | 4 +++- include/linux/blk-mq.h | 4 ++++ 3 files changed, 53 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, Ming Lin <mlin@kernel.org>, Chao Leng <lengchao@huawei.com> Subject: [PATCH v4 0/2] improve quiesce time for large amount of namespaces Date: Mon, 27 Jul 2020 15:07:15 -0700 [thread overview] Message-ID: <20200727220717.278116-1-sagi@grimberg.me> (raw) This set improves 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 nvme transports) and blocking hctxs (e.g. tcp nvme transport) by splitting queue quiesce to blk_mq_quiesce_queue_async call_(s)rcu and blk_mq_quiesce_queue_async_wait to wait for it to complete. These calls are meant to be called in parallel for different queues. Changes from v3: - make hctx->rcu_sync dynamically allocated from the heap instead of a static member function 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 | 46 ++++++++++++++++++++++++++++++++++++++++ drivers/nvme/host/core.c | 4 +++- include/linux/blk-mq.h | 4 ++++ 3 files changed, 53 insertions(+), 1 deletion(-) -- 2.25.1 _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme
next reply other threads:[~2020-07-27 22:07 UTC|newest] Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-07-27 22:07 Sagi Grimberg [this message] 2020-07-27 22:07 ` [PATCH v4 0/2] improve quiesce time for large amount of namespaces Sagi Grimberg 2020-07-27 22:07 ` [PATCH v4 1/2] blk-mq: add async quiesce interface Sagi Grimberg 2020-07-27 22:07 ` Sagi Grimberg 2020-07-27 22:13 ` Jens Axboe 2020-07-27 22:13 ` Jens Axboe 2020-07-27 22:37 ` Sagi Grimberg 2020-07-27 22:37 ` Sagi Grimberg 2020-07-27 22:07 ` [PATCH v4 2/2] nvme: improve quiesce time for large amount of namespaces Sagi Grimberg 2020-07-27 22:07 ` Sagi Grimberg
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