From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laurent Chavey Subject: Re: [PATCH] Add sysctl to set the advertised TCP initial receive window. Date: Thu, 10 Dec 2009 13:55:43 -0800 Message-ID: <97949e3e0912101355m3404de91o64ec341dc474c33b@mail.gmail.com> References: <87fx7kmg6o.fsf@basil.nowhere.org> <65634d660912091001s44016cccq4f2422e613ba9db9@mail.gmail.com> <20091209.182131.226771813.davem@davemloft.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Cc: therbert@google.com, andi@firstfloor.org, netdev@vger.kernel.org To: David Miller Return-path: Received: from smtp-out.google.com ([216.239.45.13]:45862 "EHLO smtp-out.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761826AbZLJVz7 (ORCPT ); Thu, 10 Dec 2009 16:55:59 -0500 Received: from kpbe18.cbf.corp.google.com (kpbe18.cbf.corp.google.com [172.25.105.82]) by smtp-out.google.com with ESMTP id nBALu4b0026894 for ; Thu, 10 Dec 2009 13:56:05 -0800 Received: from qyk31 (qyk31.prod.google.com [10.241.83.159]) by kpbe18.cbf.corp.google.com with ESMTP id nBALu3H9003780 for ; Thu, 10 Dec 2009 13:56:03 -0800 Received: by qyk31 with SMTP id 31so125008qyk.9 for ; Thu, 10 Dec 2009 13:56:03 -0800 (PST) In-Reply-To: <20091209.182131.226771813.davem@davemloft.net> Sender: netdev-owner@vger.kernel.org List-ID: I like the suggestion, it keeps it in the line of how init_cwnd works now. On Wed, Dec 9, 2009 at 6:21 PM, David Miller wrote: > From: Tom Herbert > Date: Wed, 9 Dec 2009 10:01:24 -0800 > >> If we can use larger initial congestion windows on private networks >> that we know to be > > With the keyword here being "network", which is why this must be a > route attribute not a sysctl with global unilatteral effect. > > Otherwise I can tell you what people with both forward and inward > facing interfaces are going to do, they'll turn the thing on globally > with your sysctl even though they process real Internet traffic. > > No way, we're not going to make it so easy to screw things up. >