From: John Meneghini <jmeneghi@redhat.com>
To: Keith Busch <kbusch@kernel.org>, Christoph Hellwig <hch@lst.de>
Cc: Bryan Gurney <bgurney@redhat.com>,
linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org,
sagi@grimberg.me, axboe@kernel.dk, mpe@ellerman.id.au,
naveen@kernel.org, maddy@linux.ibm.com, kernel@xen0n.name,
bmarzins@redhat.com
Subject: Re: [PATCH 1/1] nvme: always enable multipath
Date: Fri, 22 Nov 2024 12:52:51 -0500 [thread overview]
Message-ID: <4bd8f843-6dfa-4c66-9e42-cf4245166844@redhat.com> (raw)
In-Reply-To: <Z0ClxgBJG_YBF-Ql@kbusch-mbp.dhcp.thefacebook.com>
On 11/22/24 10:39, Keith Busch wrote:
> Anyway, we only use the one physical function, so they're certainly not
> multipath devices here. We disable the CONFIG option because while the
> nvme multipath IO overhead is low, it's not zero.
Do we know what the performance impact is? Has anybody measured the difference?
/John
next prev parent reply other threads:[~2024-11-22 17:53 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-21 22:03 [PATCH 1/1] nvme: always enable multipath Bryan Gurney
2024-11-22 6:26 ` Nilay Shroff
2024-11-22 14:10 ` John Meneghini
2024-11-24 13:09 ` Nilay Shroff
2024-11-22 12:09 ` Christoph Hellwig
2024-11-22 15:39 ` Keith Busch
2024-11-22 17:49 ` John Meneghini
2024-11-22 18:15 ` Keith Busch
2024-11-22 18:29 ` John Meneghini
2024-11-22 17:52 ` John Meneghini [this message]
2024-11-22 18:16 ` Keith Busch
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