From: Tiwei Bie <tiwei.bie@intel.com>
To: Maxime Coquelin <maxime.coquelin@redhat.com>
Cc: dev@dpdk.org, i.maximets@samsung.com, zhihong.wang@intel.com,
jfreiman@redhat.com, mst@redhat.com
Subject: Re: [dpdk-dev] [PATCH v3] vhost: batch used descs chains write-back with packed ring
Date: Thu, 20 Dec 2018 18:07:56 +0800 [thread overview]
Message-ID: <20181220100756.GA22164@dpdk-tbie.sh.intel.com> (raw)
In-Reply-To: <20181220100022.3531-1-maxime.coquelin@redhat.com>
On Thu, Dec 20, 2018 at 11:00:22AM +0100, Maxime Coquelin wrote:
> Instead of writing back descriptors chains in order, let's
> write the first chain flags last in order to improve batching.
>
> With Kernel's pktgen benchmark, ~3% performance gain is measured.
>
> Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
> ---
> lib/librte_vhost/virtio_net.c | 19 +++++++++++++++++--
> 1 file changed, 17 insertions(+), 2 deletions(-)
Reviewed-by: Tiwei Bie <tiwei.bie@intel.com>
next prev parent reply other threads:[~2018-12-20 10:10 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-20 10:00 Maxime Coquelin
2018-12-20 10:07 ` Tiwei Bie [this message]
2018-12-20 14:30 ` Michael S. Tsirkin
2018-12-20 15:32 ` Maxime Coquelin
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