From: Christoph Hellwig <hch@lst.de>
To: Sagi Grimberg <sagi@grimberg.me>
Cc: linux-nvme@lists.infradead.org, Christoph Hellwig <hch@lst.de>,
Keith Busch <keith.busch@intel.com>,
linux-block@vger.kernel.org, Jens Axboe <axboe@kernel.dk>
Subject: Re: [PATCH 0/5] implement nvmf read/write queue maps
Date: Tue, 11 Dec 2018 14:28:43 +0100 [thread overview]
Message-ID: <20181211132843.GA20401@lst.de> (raw)
In-Reply-To: <20181211104936.25333-1-sagi@grimberg.me>
On Tue, Dec 11, 2018 at 02:49:30AM -0800, Sagi Grimberg wrote:
> This set implements read/write queue maps to nvmf (implemented in tcp
> and rdma). We basically allow the users to pass in nr_write_queues
> argument that will basically maps a separate set of queues to host
> write I/O (or more correctly non-read I/O) and a set of queues to
> hold read I/O (which is now controlled by the known nr_io_queues).
>
> A patchset that restores nvme-rdma polling is in the pipe.
> The polling is less trivial because:
> 1. we can find non I/O completions in the cq (i.e. memreg)
> 2. we need to start with non-polling for a sane connect and
> then switch to polling which is not trivial behind the
> cq API we use.
I think we should enhance the CQ API to better support polling,
the old poll code was a bit of a layering violation vs the core
code..
prev parent reply other threads:[~2018-12-11 13:28 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-11 10:49 [PATCH 0/5] implement nvmf read/write queue maps Sagi Grimberg
2018-12-11 10:49 ` [PATCH 1/5] blk-mq-rdma: pass in queue map to blk_mq_rdma_map_queues Sagi Grimberg
2018-12-11 13:34 ` Christoph Hellwig
2018-12-11 10:49 ` [PATCH 2/5] nvme-fabrics: add missing nvmf_ctrl_options documentation Sagi Grimberg
2018-12-11 13:35 ` Christoph Hellwig
2018-12-11 10:49 ` [PATCH 3/5] nvme-fabrics: allow user to set nr_write_queues for separate queue maps Sagi Grimberg
2018-12-11 13:35 ` Christoph Hellwig
2018-12-11 10:49 ` [PATCH 4/5] nvme-tcp: support separate queue maps for read and write Sagi Grimberg
2018-12-11 13:41 ` Christoph Hellwig
2018-12-11 23:11 ` Sagi Grimberg
2018-12-11 10:49 ` [PATCH 5/5] nvme-rdma: support read/write queue separation Sagi Grimberg
2018-12-11 13:42 ` Christoph Hellwig
2018-12-11 10:49 ` [PATCH nvme-cli 6/5] fabrics: pass in nr_write_queues Sagi Grimberg
2018-12-11 19:30 ` Keith Busch
2018-12-11 23:34 ` Sagi Grimberg
2018-12-11 13:28 ` Christoph Hellwig [this message]
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=20181211132843.GA20401@lst.de \
--to=hch@lst.de \
--cc=axboe@kernel.dk \
--cc=keith.busch@intel.com \
--cc=linux-block@vger.kernel.org \
--cc=linux-nvme@lists.infradead.org \
--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
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).