netdev - Re: TCP keepalive timer problem

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Message-ID: <87skfdl6qt.fsf@basil.nowhere.org>
Date:	Thu, 27 Aug 2009 15:35:22 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Li_Xin2@....com, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Subject: Re: TCP keepalive timer problem

Eric Dumazet <eric.dumazet@...il.com> writes:
>
> Now, 7200 seconds might be inappropriate for special needs, and considering
> there is no way to change tcp_retries2 for a given socket (only choice being the global
> tcp_retries2 setting), I would vote for a change in our stack, to *relax* RFC,
> and get smaller keepalive timers if possible.

I think the better fix would be to just to only do that when
tcp_retries2 > keep alive time. So keep the existing behaviour
with default keep alive, but switch when the user defined
a very short keep alive.

-Andi


-- 
ak@...ux.intel.com -- Speaking for myself only.
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