To: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [PATCH] tcp: Expose the initial RTO via a new sysctl.
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Date: Tue, 17 May 2011 13:02:47 +0200
From: Hagen Paul Pfeifer <hagen@jauu.net>
Cc: Benoit Sigoure <tsunanet@gmail.com>, <davem@davemloft.net>,
        <kuznet@ms2.inr.ac.ru>, <pekkas@netcore.fi>, <jmorris@namei.org>,
        <yoshfuji@linux-ipv6.org>, <kaber@trash.net>, <netdev@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>
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On Tue, 17 May 2011 10:07:57 +0200, Eric Dumazet wrote:

> I wont discuss if introducing a new sysctl is welcomed, only on patch
> issues. I believe some work in IETF is done to reduce the 3sec value to
> 1sec anyway.

Why not? I though all new knobs in this area should be done on a per route
metric so it can be controlled on a per path basis. RTO should be
adjustable on a per path basis, because it depends on the path.

Some months back [1] I posted a patch to enable/disable TCP quick ack
mode, which has nothing to do with network paths, just with a local server
policy. But David rejected the patch with the argument that I should use a
per path knob (this is a little bit inapprehensible for me, but David has
the last word).

Hagen


[1] http://kerneltrap.org/mailarchive/linux-netdev/2010/8/23/6283640
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