linux-kernel - Re: [PATCH 0/1] vhost: add vhost

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Message-ID: <CAGF4SLgkgjkLjmPWWJRBo44B+mcR4jRcjQ+PdqJuUGxZVuEECw@mail.gmail.com>
Date:   Mon, 5 Nov 2018 21:56:36 -0500
From:   Vitaly Mayatskih <v.mayatskih@...il.com>
To:     Jason Wang <jasowang@...hat.com>
Cc:     "Michael S . Tsirkin" <mst@...hat.com>,
        Paolo Bonzini <pbonzini@...hat.com>, kvm@...r.kernel.org,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, stefanha@...hat.com
Subject: Re: [PATCH 0/1] vhost: add vhost_blk driver

On Mon, Nov 5, 2018 at 9:45 PM Jason Wang <jasowang@...hat.com> wrote:

> > Storage industry is shifting away from SCSI, which has a scaling
> > problem.
>
>
> Know little about storage. For scaling, do you mean SCSI protocol
> itself? If not, it's probably not a real issue for virtio-scsi itself.

Yes,  the protocol.

> >   I can compare vhost-scsi vs vhost-blk if you are curious.
>
>
> It would be very helpful to see the performance comparison.

I will try to find comparable hw with fast enough SAS SSDs. That one
was done with NVMe's sitting on the very bottom of storage topology.


-- 
wbr, Vitaly