From owner-freebsd-net Mon Jul 1 14: 7:25 2002 Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7853037B400 for ; Mon, 1 Jul 2002 14:07:23 -0700 (PDT) Received: from laptop.tenebras.com (laptop.tenebras.com [66.92.188.18]) by mx1.FreeBSD.org (Postfix) with SMTP id 96CE443E2F for ; Mon, 1 Jul 2002 14:07:22 -0700 (PDT) (envelope-from kudzu@tenebras.com) Received: (qmail 3824 invoked from network); 1 Jul 2002 21:07:21 -0000 Received: from sapphire.tenebras.com (HELO tenebras.com) (66.92.188.241) by 0 with SMTP; 1 Jul 2002 21:07:21 -0000 Message-ID: <3D20C489.5040108@tenebras.com> Date: Mon, 01 Jul 2002 14:07:21 -0700 From: Michael Sierchio User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.0.0) Gecko/20020626 X-Accept-Language: en-us, en, fr-fr, ru MIME-Version: 1.0 To: Poul-Henning Kamp Cc: Doug Barton , freebsd-hackers@FreeBSD.ORG, net@FreeBSD.ORG Subject: Re: ftp and mail much slower into fbsd 4.4 vs and old BSDi References: <55379.1025557087@critter.freebsd.dk> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Poul-Henning Kamp wrote: > Yes, I can attest to this an I belive it is actually the case on both > -current and -releng4 that disabling newreno improves TCP performance. > > I belive running an X11 application or scp(1) over a wavelan is a very > good test-bed for this issue. Wireless breaks a lot of "optimizations," doesn't it? Congestion control assumes that packet loss is due to congestion, and less than 1% of loss is due to damage -- quite the opposite of 802.11(b) in an urban environment -- cordless phones, microwaves, etc. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message