linux-kernel - Re: [PATCH 1/1] nvme: always enable multipath

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <4bd8f843-6dfa-4c66-9e42-cf4245166844@redhat.com>
Date: Fri, 22 Nov 2024 12:52:51 -0500
From: John Meneghini <jmeneghi@...hat.com>
To: Keith Busch <kbusch@...nel.org>, Christoph Hellwig <hch@....de>
Cc: Bryan Gurney <bgurney@...hat.com>, linux-kernel@...r.kernel.org,
 linux-nvme@...ts.infradead.org, sagi@...mberg.me, axboe@...nel.dk,
 mpe@...erman.id.au, naveen@...nel.org, maddy@...ux.ibm.com,
 kernel@...0n.name, bmarzins@...hat.com
Subject: Re: [PATCH 1/1] nvme: always enable multipath

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