From: Christoph Hellwig <hch@lst.de>
To: Weiping Zhang <zwp10758@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>, Tejun Heo <tj@kernel.org>,
Keith Busch <kbusch@kernel.org>, Jens Axboe <axboe@kernel.dk>,
Bart Van Assche <bvanassche@acm.org>,
Minwoo Im <minwoo.im.dev@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ming Lei <ming.lei@redhat.com>,
"Nadolski, Edmund" <edmund.nadolski@intel.com>,
linux-block@vger.kernel.org, cgroups@vger.kernel.org,
linux-nvme@lists.infradead.org
Subject: Re: [PATCH v5 0/4] Add support Weighted Round Robin for blkcg and nvme
Date: Tue, 31 Mar 2020 18:33:37 +0200 [thread overview]
Message-ID: <20200331163337.GA25020@lst.de> (raw)
In-Reply-To: <CAA70yB6PYH-W8-RRd7nxXOvpg6n+_-h_BLm6JA3EbLmsYG-ZSw@mail.gmail.com>
On Wed, Apr 01, 2020 at 12:31:17AM +0800, Weiping Zhang wrote:
> Would you like to share more detail about why NVMe WRR is broken?
Because it only weights command fetching. It says absolutely nothing
about command execution.
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: Weiping Zhang <zwp10758@gmail.com>
Cc: Jens Axboe <axboe@kernel.dk>,
Bart Van Assche <bvanassche@acm.org>,
linux-nvme@lists.infradead.org, Ming Lei <ming.lei@redhat.com>,
linux-block@vger.kernel.org, Keith Busch <kbusch@kernel.org>,
Minwoo Im <minwoo.im.dev@gmail.com>,
cgroups@vger.kernel.org, Tejun Heo <tj@kernel.org>,
"Nadolski, Edmund" <edmund.nadolski@intel.com>,
Thomas Gleixner <tglx@linutronix.de>,
Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH v5 0/4] Add support Weighted Round Robin for blkcg and nvme
Date: Tue, 31 Mar 2020 18:33:37 +0200 [thread overview]
Message-ID: <20200331163337.GA25020@lst.de> (raw)
In-Reply-To: <CAA70yB6PYH-W8-RRd7nxXOvpg6n+_-h_BLm6JA3EbLmsYG-ZSw@mail.gmail.com>
On Wed, Apr 01, 2020 at 12:31:17AM +0800, Weiping Zhang wrote:
> Would you like to share more detail about why NVMe WRR is broken?
Because it only weights command fetching. It says absolutely nothing
about command execution.
_______________________________________________
linux-nvme mailing list
linux-nvme@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-nvme
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
To: Weiping Zhang <zwp10758-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>,
Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Keith Busch <kbusch-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Jens Axboe <axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org>,
Bart Van Assche <bvanassche-HInyCGIudOg@public.gmane.org>,
Minwoo Im <minwoo.im.dev-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>,
Ming Lei <ming.lei-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
"Nadolski,
Edmund" <edmund.nadolski-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
linux-block-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-nvme-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: Re: [PATCH v5 0/4] Add support Weighted Round Robin for blkcg and nvme
Date: Tue, 31 Mar 2020 18:33:37 +0200 [thread overview]
Message-ID: <20200331163337.GA25020@lst.de> (raw)
In-Reply-To: <CAA70yB6PYH-W8-RRd7nxXOvpg6n+_-h_BLm6JA3EbLmsYG-ZSw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On Wed, Apr 01, 2020 at 12:31:17AM +0800, Weiping Zhang wrote:
> Would you like to share more detail about why NVMe WRR is broken?
Because it only weights command fetching. It says absolutely nothing
about command execution.
next prev parent reply other threads:[~2020-03-31 16:33 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-04 3:30 [PATCH v5 0/4] Add support Weighted Round Robin for blkcg and nvme Weiping Zhang
2020-02-04 3:30 ` Weiping Zhang
2020-02-04 3:30 ` Weiping Zhang
2020-02-04 3:31 ` [PATCH v5 1/4] block: add weighted round robin for blkcgroup Weiping Zhang
2020-02-04 3:31 ` Weiping Zhang
2020-02-04 3:31 ` Weiping Zhang
2020-02-04 3:31 ` [PATCH v5 2/4] nvme: add get_ams for nvme_ctrl_ops Weiping Zhang
2020-02-04 3:31 ` Weiping Zhang
2020-02-04 3:31 ` Weiping Zhang
2020-02-04 3:31 ` [PATCH v5 3/4] nvme-pci: rename module parameter write_queues to read_queues Weiping Zhang
2020-02-04 3:31 ` Weiping Zhang
2020-02-04 3:31 ` Weiping Zhang
2020-02-04 3:31 ` [PATCH v5 4/4] nvme: add support weighted round robin queue Weiping Zhang
2020-02-04 3:31 ` Weiping Zhang
2020-02-04 3:31 ` Weiping Zhang
2020-02-04 15:42 ` [PATCH v5 0/4] Add support Weighted Round Robin for blkcg and nvme Keith Busch
2020-02-04 15:42 ` Keith Busch
2020-02-16 8:09 ` Weiping Zhang
2020-02-16 8:09 ` Weiping Zhang
2020-02-16 8:09 ` Weiping Zhang
2020-03-31 6:17 ` Weiping Zhang
2020-03-31 6:17 ` Weiping Zhang
2020-03-31 10:29 ` Paolo Valente
2020-03-31 10:29 ` Paolo Valente
2020-03-31 14:36 ` Tejun Heo
2020-03-31 14:36 ` Tejun Heo
2020-03-31 14:36 ` Tejun Heo
2020-03-31 15:47 ` Weiping Zhang
2020-03-31 15:47 ` Weiping Zhang
2020-03-31 15:47 ` Weiping Zhang
2020-03-31 15:51 ` Tejun Heo
2020-03-31 15:51 ` Tejun Heo
2020-03-31 15:52 ` Christoph Hellwig
2020-03-31 15:52 ` Christoph Hellwig
2020-03-31 15:52 ` Christoph Hellwig
2020-03-31 15:54 ` Tejun Heo
2020-03-31 15:54 ` Tejun Heo
2020-03-31 15:54 ` Tejun Heo
2020-03-31 16:31 ` Weiping Zhang
2020-03-31 16:31 ` Weiping Zhang
2020-03-31 16:31 ` Weiping Zhang
2020-03-31 16:33 ` Christoph Hellwig [this message]
2020-03-31 16:33 ` Christoph Hellwig
2020-03-31 16:33 ` Christoph Hellwig
2020-03-31 16:52 ` Weiping Zhang
2020-03-31 16:52 ` Weiping Zhang
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