netdev - Re: [PATCH net-next] mlx4: exploit skb->xmit_more to conditionally send doorbell

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Message-ID: <1411661993.16953.34.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Thu, 25 Sep 2014 09:19:53 -0700
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Jesper Dangaard Brouer <brouer@...hat.com>
Cc:	David Miller <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>, Amir Vadai <amirv@...lanox.com>,
	John Fastabend <john.r.fastabend@...el.com>
Subject: Re: [PATCH net-next] mlx4: exploit skb->xmit_more to conditionally
 send doorbell

On Thu, 2014-09-25 at 08:36 -0700, Eric Dumazet wrote:


>     26.36%  [kernel]  [k] __copy_skb_header     

Note to myself :

Time to optimize this thing, doing a memset() to copy a bunch of
consecutive fields.


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