From owner-freebsd-questions Sun Dec 1 4:51: 3 2002 Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id EFC4037B401 for ; Sun, 1 Dec 2002 04:50:58 -0800 (PST) Received: from sccrmhc02.attbi.com (sccrmhc02.attbi.com [204.127.202.62]) by mx1.FreeBSD.org (Postfix) with ESMTP id C711243E88 for ; Sun, 1 Dec 2002 04:50:57 -0800 (PST) (envelope-from freebsd-questions-local@be-well.no-ip.com) Received: from be-well.ilk.org (lowellg.ne.client2.attbi.com[24.147.188.198]) by sccrmhc02.attbi.com (sccrmhc02) with ESMTP id <2002120112505700200soaele>; Sun, 1 Dec 2002 12:50:57 +0000 Received: from be-well.ilk.org (lowellg.ne.client2.attbi.com [24.147.188.198] (may be forged)) by be-well.ilk.org (8.12.6/8.12.6) with ESMTP id gB1Cou7v001568; Sun, 1 Dec 2002 07:50:56 -0500 (EST) (envelope-from freebsd-questions-local@be-well.no-ip.com) Received: (from lowell@localhost) by be-well.ilk.org (8.12.6/8.12.6/Submit) id gB1CounT001565; Sun, 1 Dec 2002 07:50:56 -0500 (EST) X-Authentication-Warning: be-well.ilk.org: lowell set sender to freebsd-questions-local@be-well.ilk.org using -f To: James Grant Cc: freebsd-questions@FreeBSD.ORG Subject: Re: modifying advertised window size. References: <200211301634.51428.jamesg@xtra.co.nz> From: Lowell Gilbert Date: 01 Dec 2002 07:50:56 -0500 In-Reply-To: <200211301634.51428.jamesg@xtra.co.nz> Message-ID: <44r8d1q4wf.fsf@be-well.ilk.org> Lines: 17 User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG James Grant writes: > I want to modify my advertised window size so that I get better interactive > performance on my modem whilst downloading for example. > > I've tried using the route options "-lockrest -sendpipe 4096 -recvpipe 4096 > -mtu 576" for example. Then I do a do "route " and all the options are > there like they should be. > > Then I start a session with that host, but when you look at tcpdump's output, > it's still using the ones in the sysctl, net.inet.tcp.recvspace and > net.inet.tcp.sendspace. It feels like it too, it saturates the whole > connection. > > Any ideas how I can make it use different window sizes for different routes? What you really want to do (in my opinion) is reduce the link MTU... To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message