netdev - Re: [PATCH 3/3] Convert the UDP hash lock to RCU

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Date:	Tue, 07 Oct 2008 10:54:42 +0200
From:	Benny Amorsen <benny+usenet@...rsen.dk>
To:	Eric Dumazet <dada1@...mosbay.com>
Cc:	David Miller <davem@...emloft.net>, minyard@....org,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	shemminger@...tta.com, paulmck@...ux.vnet.ibm.com
Subject: Re: [PATCH 3/3] Convert the UDP hash lock to RCU

Eric Dumazet <dada1@...mosbay.com> writes:

> Most UDP sockets are setup for long periods (RTP trafic), or if an application really
> wants to {open/send or receive one UDP frame/close} many sockets, it already hits
> RCU handling of its file structures and should not be slowed down that much.
>
> By 'long period' I mean thousand of packets sent/received by each RTP session, being
> voice (50 packets/second) or even worse video...

Does DNS with port randomization need short lived sockets?


/Benny

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