netdev - Re: [RFC net-next 2/2] udp: No longer use SLAB_DESTROY_BY

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Message-ID: <CALx6S35beVmxdp8D_xp+5GthHuFekR7TDemZn64LzPA5thYPvw@mail.gmail.com>
Date:	Mon, 28 Mar 2016 09:54:19 -0700
From:	Tom Herbert <tom@...bertland.com>
To:	Rick Jones <rick.jones2@....com>
Cc:	Eric Dumazet <edumazet@...gle.com>,
	"David S . Miller" <davem@...emloft.net>,
	netdev <netdev@...r.kernel.org>,
	Eric Dumazet <eric.dumazet@...il.com>
Subject: Re: [RFC net-next 2/2] udp: No longer use SLAB_DESTROY_BY_RCU

On Mon, Mar 28, 2016 at 9:15 AM, Rick Jones <rick.jones2@....com> wrote:
> On 03/25/2016 03:29 PM, Eric Dumazet wrote:
>>
>> UDP sockets are not short lived in the high usage case, so the added
>> cost of call_rcu() should not be a concern.
>
>
> Even a busy DNS resolver?
>
Should use connectionless UDP sockets.

> rick jones