From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hagen Paul Pfeifer Subject: Re: [PATCH] tcp: Expose the initial RTO via a new sysctl. Date: Tue, 17 May 2011 13:02:47 +0200 Message-ID: References: <1305618020-72535-1-git-send-email-tsunanet@gmail.com> <1305618020-72535-2-git-send-email-tsunanet@gmail.com> <1305619677.2850.11.camel@edumazet-laptop> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: Benoit Sigoure , , , , , , , , To: Eric Dumazet Return-path: In-Reply-To: <1305619677.2850.11.camel@edumazet-laptop> Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org 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