linux-kernel - Re: [patch 13/20] timer: Switch to a non cascading wheel

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Date:	Wed, 15 Jun 2016 16:53:12 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Eric Dumazet <edumazet@...gle.com>
cc:	Peter Zijlstra <peterz@...radead.org>,
	Arjan van de Ven <arjanvandeven@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Chris Mason <clm@...com>,
	Arjan van de Ven <arjan@...radead.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [patch 13/20] timer: Switch to a non cascading wheel

On Tue, 14 Jun 2016, Eric Dumazet wrote:
> Original TCP RFCs tell timeout is infinite ;)
> 
> Practically, conntrack has a 5 days timeout, but I really doubt anyone
> expects an idle TCP flow to stay 'alive' when nothing is sent for 5
> days.

So would 37hrs ~= 1.5 days be a reasonable cutoff or will stuff fall apart and
people be surprised?

Thanks,

	tglx