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From: Eric Dumazet <edumazet@google.com>
Date: Tue, 14 Feb 2017 06:12:41 -0800
Message-ID: <CANn89iK6qWxqWNf+Tb7nTXNhkREKSmj=HCMSVZhDZOaw5Qo9Aw@mail.gmail.com>
Subject: Re: [PATCH v3 net-next 08/14] mlx4: use order-0 pages for RX
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Sender: owner-linux-mm@kvack.org
List-ID: <linux-mm.kvack.org>
To: Jesper Dangaard Brouer <brouer@redhat.com>
Cc: Alexander Duyck <alexander.duyck@gmail.com>, "David S . Miller" <davem@davemloft.net>, netdev <netdev@vger.kernel.org>, Tariq Toukan <tariqt@mellanox.com>, Martin KaFai Lau <kafai@fb.com>, Saeed Mahameed <saeedm@mellanox.com>, Willem de Bruijn <willemb@google.com>, Brenden Blanco <bblanco@plumgrid.com>, Alexei Starovoitov <ast@kernel.org>, Eric Dumazet <eric.dumazet@gmail.com>, linux-mm <linux-mm@kvack.org>

On Tue, Feb 14, 2017 at 5:45 AM, Eric Dumazet <edumazet@google.com> wrote:
>
> Could we now please Ack this v3 and merge it ?
>

BTW I found the limitation on sender side.

After doing :

lpaa23:~# ethtool -c eth0
Coalesce parameters for eth0:
Adaptive RX: on  TX: off
stats-block-usecs: 0
sample-interval: 0
pkt-rate-low: 400000
pkt-rate-high: 450000

rx-usecs: 16
rx-frames: 44
rx-usecs-irq: 0
rx-frames-irq: 0

tx-usecs: 16
tx-frames: 16
tx-usecs-irq: 0
tx-frames-irq: 256

rx-usecs-low: 0
rx-frame-low: 0
tx-usecs-low: 0
tx-frame-low: 0

rx-usecs-high: 128
rx-frame-high: 0
tx-usecs-high: 0
tx-frame-high: 0

lpaa23:~# ethtool -C eth0 tx-usecs 8 tx-frames 8

-> 36 Gbit on a single TCP flow, this is the highest number I ever got.

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