netdev - Re: [PATCH net-next 2/2] udp: implement and use per cpu rx skbs cache

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Message-ID: <3270c995-4eea-b3e1-128c-82921d89eb79@gmail.com>
Date:   Wed, 18 Apr 2018 12:21:37 -0700
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org
Cc:     "David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH net-next 2/2] udp: implement and use per cpu rx skbs cache

On 04/18/2018 10:15 AM, Paolo Abeni wrote:
is not appealing to me :/
> 
> Thank you for the feedback.
> Sorry for not being clear about it, but knotd is using SO_REUSEPORT and
> the above tests are leveraging it.
> 
> That 5% is on top of that 300%.

Then there is something wrong.

Adding copies should not increase performance.

If it does, there is certainly another way, reaching 10% instead of 5%