From: David Miller <davem@davemloft.net>
To: eric.dumazet@gmail.com
Cc: netdev@vger.kernel.org, jasowang@redhat.com, mst@redhat.com,
willemb@google.com
Subject: Re: [PATCH net-next] virtio_net: exploit napi_complete_done() return value
Date: Sat, 04 Feb 2017 19:39:01 -0500 (EST) [thread overview]
Message-ID: <20170204.193901.790935994094939434.davem@davemloft.net> (raw)
In-Reply-To: <1486223361.21871.136.camel@edumazet-glaptop3.roam.corp.google.com>
From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Sat, 04 Feb 2017 07:49:21 -0800
> From: Eric Dumazet <edumazet@google.com>
>
> Since commit 364b6055738b ("net: busy-poll: return busypolling status to
> drivers"), napi_complete_done() returns a boolean that can be used
> by drivers to conditionally rearm interrupts.
>
> This patch changes virtio_net to use this boolean to avoid a bit of
> overhead for busy-poll users.
>
> Jason reports about 1.1% improvement for 1 byte TCP_RR (burst 100).
>
> Signed-off-by: Eric Dumazet <edumazet@google.com>
> Acked-by: Jason Wang <jasowang@redhat.com>
Applied.
prev parent reply other threads:[~2017-02-05 0:39 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-04 15:49 [PATCH net-next] virtio_net: exploit napi_complete_done() return value Eric Dumazet
2017-02-05 0:39 ` David Miller [this message]
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