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  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]
Date:   Wed, 27 Mar 2019 09:16:19 +0100
From:   Christoph Hellwig <>
To:     luferry <>
Cc:     Christoph Hellwig <>, Jens Axboe <>,
        Dongli Zhang <>,
        Ming Lei <>,,
Subject: Re: [PATCH] make blk_mq_map_queues more friendly for cpu topology

On Tue, Mar 26, 2019 at 03:55:10PM +0800, luferry wrote:
> At 2019-03-26 15:39:54, "Christoph Hellwig" <> wrote:
> >Why isn't this using the automatic PCI-level affinity assignment to
> >start with?
> When enable virtio-blk with multi queues but with only 2 msix-vector.
> vp_dev->per_vq_vectors will be false, vp_get_vq_affintity will return NULL directly
> so blk_mq_virtio_map_queues will fallback to blk_mq_map_queues.

What is the point of the multiqueue mode if you don't have enough
(virtual) MSI-X vectors?

Powered by blists - more mailing lists