linux-kernel - Re: [PATCH RFC v8 02/11] vhost: use batched get_vq

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Message-ID: <CAJaqyWdwXMX0JGhmz6soH2ZLNdaH6HEdpBM8ozZzX9WUu8jGoQ@mail.gmail.com>
Date:   Mon, 15 Jun 2020 14:28:03 +0200
From:   Eugenio Perez Martin <eperezma@...hat.com>
To:     Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc:     "Michael S. Tsirkin" <mst@...hat.com>,
        linux-kernel@...r.kernel.org, kvm list <kvm@...r.kernel.org>,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
        Jason Wang <jasowang@...hat.com>
Subject: Re: [PATCH RFC v8 02/11] vhost: use batched get_vq_desc version

On Thu, Jun 11, 2020 at 5:22 PM Konrad Rzeszutek Wilk
<konrad.wilk@...cle.com> wrote:
>
> On Thu, Jun 11, 2020 at 07:34:19AM -0400, Michael S. Tsirkin wrote:
> > As testing shows no performance change, switch to that now.
>
> What kind of testing? 100GiB? Low latency?
>

Hi Konrad.

I tested this version of the patch:
https://lkml.org/lkml/2019/10/13/42

It was tested for throughput with DPDK's testpmd (as described in
http://doc.dpdk.org/guides/howto/virtio_user_as_exceptional_path.html)
and kernel pktgen. No latency tests were performed by me. Maybe it is
interesting to perform a latency test or just a different set of tests
over a recent version.

Thanks!