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From: John Baldwin <jhb@freebsd.org>
To: freebsd-net@freebsd.org
Subject: Re: [PATCH] Add a new TCP_IGNOREIDLE socket option
Date: Tue, 29 Jan 2013 13:50:39 -0500
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Cc: Sepherosa Ziehau <sepherosa@gmail.com>, Bjoern Zeeb <bz@freebsd.org>
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On Thursday, January 24, 2013 11:14:40 am John Baldwin wrote:
> > > Agree, per-socket option could be useful than global sysctls under
> > > certain situation.  However, in addition to the per-socket option,
> > > could global sysctl nodes to disable idle_restart/idle_cwv help too?
> > 
> > No.  This is far too dangerous once it makes it into some tuning guide.
> > The threat of congestion breakdown is real.  The Internet, or any packet
> > network, can only survive in the long term if almost all follow the rules
> > and self-constrain to remain fair to the others.  What would happen if
> > nobody would respect the traffic lights anymore?
> 
> The problem with this argument is Linux has already had this as a tunable
> option for years and the Internet hasn't melted as a result.
>  
> > Since this seems to be a burning issue I'll come up with a patch in the
> > next days to add a decaying restartCWND that'll be fair and allow a very
> > quick ramp up if no loss occurs.
> 
> I think this could be useful.  OTOH, I still think the TCP_IGNOREIDLE option
> is useful both with and without a decaying restartCWND?

*ping*

Andre, do you object to adding the new socket option?

-- 
John Baldwin