From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: Re: [PATCH iproute2] document initcwnd Date: Wed, 5 May 2010 19:33:07 -0700 Message-ID: <20100505193307.42382590@nehalam> References: <4BE171EC.20904@athenacr.com> <4BE1DB82.2030403@athenacr.com> <20100505150343.0c09c6ba@nehalam> <4BE21D64.4040600@athenacr.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: dormando , netdev@vger.kernel.org, Rick Jones , shemminger@osdl.org To: Brian Bloniarz Return-path: Received: from mail.vyatta.com ([76.74.103.46]:49012 "EHLO mail.vyatta.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751439Ab0EFCdU (ORCPT ); Wed, 5 May 2010 22:33:20 -0400 In-Reply-To: <4BE21D64.4040600@athenacr.com> Sender: netdev-owner@vger.kernel.org List-ID: On Wed, 05 May 2010 21:37:40 -0400 Brian Bloniarz wrote: > Stephen Hemminger wrote: > > On Wed, 05 May 2010 16:56:34 -0400 > > Brian Bloniarz wrote: > > > >> dormando wrote: > >>>> This sounds like TCP slow start. > >>>> > >>>> http://en.wikipedia.org/wiki/Slow-start > >>>> > >>>> As far as tunables you might want to play with the initcwnd route > >>>> flag (see "ip route help") > >>> Ah, yes, initcwnd was it. I'm well aware of TCP Congestion control / slow > >>> start / etc. However I couldn't find the damn tunable for it :) > >> Documenting the flag in ip(8) might increase its visibility > >> a little. I don't see it documented in the iproute2 git head, > >> though it shows up on http://linux.die.net/man/8/ip somehow. > >> > >> Stephen, do you know why that is? > > > > No one sent me an official patch to change it? > > Mention initcwnd in ip(8). Text taken from doc/ip-cref.tex. > > Signed-off-by: Brian Bloniarz Ok, I will add it with an explicit caution about not doing this on public networks.