netdev - Re: RFC: configurable tcp timewait timeout sysctl kernel knob ?

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Message-ID: <20130719174231.GF9494@order.stressinduktion.org>
Date:	Fri, 19 Jul 2013 19:42:31 +0200
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Vincent Li <vincent.mc.li@...il.com>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: RFC: configurable tcp timewait timeout sysctl kernel knob ?

On Fri, Jul 19, 2013 at 08:59:54AM -0700, Vincent Li wrote:
> there is sysctl tcp_fin_timeout to tune FIN_WAIT2 timeout, I couldn't
> find a sysctl to tune TIME_WAIT timeout and it is hard coded to 60
> seconds, we have a situation we need to either reduce the timewait
> timeout value or recycle the timewait socket that is to use
> tcp_tw_recycle and tcp_tw_reuse, is a sysctl to tune timewait value
> good idea or bad idea that no one bothered to write one?
> 
> I have  a dirty hack patch to do that, but I think it may be  broken
> to screw something I couldn't think of.

This topic pops up from time to time. Until now David Miller (rightfully)
rejected such a patch: <http://thread.gmane.org/gmane.linux.network/244411/>

Greetings,

  Hannes

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