From: "hch@lst.de" <hch@lst.de>
To: Minwoo Im <minwoo.im.dev@gmail.com>
Cc: Keith Busch <kbusch@kernel.org>,
Damien Le Moal <Damien.LeMoal@wdc.com>,
"sagi@grimberg.me" <sagi@grimberg.me>,
"linux-nvme@lists.infradead.org" <linux-nvme@lists.infradead.org>,
"hch@lst.de" <hch@lst.de>
Subject: Re: [PATCH] nvme-multipath: set nr_zones for zoned namespaces
Date: Mon, 8 Feb 2021 16:05:09 +0100 [thread overview]
Message-ID: <20210208150509.GA12734@lst.de> (raw)
In-Reply-To: <20210208145747.GA8941@localhost.localdomain>
On Mon, Feb 08, 2021 at 11:57:47PM +0900, Minwoo Im wrote:
> But, there are also little more differences between the path namespace
> and head namespace:
>
> cat /sys/block/nvme0n1/queue/nr_requests: 128
> cat /sys/block/nvme0c0n1/queue/nr_requests: 1023
nr_request is a noop for bio-based drivers.
> cat /sys/block/nvme0n1/queue/iostats: 0
> cat /sys/block/nvme0c0n1/queue/iostats: 1
iostats for bio based drivers require extra code, and we don't really
need those.
> cat /sys/block/nvme0n1/queue/rq_affinity: 0
> cat /sys/block/nvme0c0n1/queue/rq_affinity: 1
rq_affinity is a noop for bio based drivers.
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next prev parent reply other threads:[~2021-02-08 15:05 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-05 19:50 [PATCH] nvme-multipath: set nr_zones for zoned namespaces Keith Busch
2021-02-07 16:16 ` Christoph Hellwig
2021-02-07 23:06 ` Damien Le Moal
2021-02-08 3:28 ` Keith Busch
2021-02-08 3:51 ` Damien Le Moal
2021-02-08 14:57 ` Minwoo Im
2021-02-08 15:05 ` hch [this message]
2021-02-08 15:14 ` Keith Busch
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