From owner-freebsd-stable@FreeBSD.ORG Thu Feb 16 21:45:09 2006 Return-Path: X-Original-To: freebsd-stable@freebsd.org Delivered-To: freebsd-stable@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9CB9C16A420 for ; Thu, 16 Feb 2006 21:45:09 +0000 (GMT) (envelope-from dwmalone@maths.tcd.ie) Received: from salmon.maths.tcd.ie (salmon.maths.tcd.ie [134.226.81.11]) by mx1.FreeBSD.org (Postfix) with SMTP id D834F43D4C for ; Thu, 16 Feb 2006 21:45:08 +0000 (GMT) (envelope-from dwmalone@maths.tcd.ie) Received: from walton.maths.tcd.ie ([134.226.81.10] helo=walton.maths.tcd.ie) by salmon.maths.tcd.ie with SMTP id ; 16 Feb 2006 21:45:07 +0000 (GMT) Date: Thu, 16 Feb 2006 21:45:07 +0000 From: David Malone To: freebsd-stable@freebsd.org Message-ID: <20060216214507.GA91928@walton.maths.tcd.ie> References: <6.2.3.4.0.20060215221957.076524f8@64.7.153.2> <20060216100359.GA10327@jbell.maths.tcd.ie> <20060216121604.GE55530@e-Gitt.NET> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060216121604.GE55530@e-Gitt.NET> User-Agent: Mutt/1.5.6i Sender: dwmalone@maths.tcd.ie Subject: Re: tcp throughput and net.inet.tcp.inflight.enable X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 Feb 2006 21:45:09 -0000 On Thu, Feb 16, 2006 at 01:16:04PM +0100, Oliver Brandmueller wrote: > Maybe it's an idea to make this an per-interface value. On my local GigE > NFS network it might not be useful (well, maybe even lowering the > performance), while on another interface with lots of connects from all > over the world does a good job. Andre has just committed something which disables this on TCP conections with a short round trip time - this is probably quite a good workaround for now: http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/netinet/tcp_subr.c?#rev1.237 David.