From owner-freebsd-hackers Fri Nov 30 20:49:44 2001 Delivered-To: freebsd-hackers@freebsd.org Received: from apollo.backplane.com (apollo.backplane.com [216.240.41.2]) by hub.freebsd.org (Postfix) with ESMTP id 6767337B405 for ; Fri, 30 Nov 2001 20:49:43 -0800 (PST) Received: (from dillon@localhost) by apollo.backplane.com (8.11.6/8.9.1) id fB14nbw28731; Fri, 30 Nov 2001 20:49:37 -0800 (PST) (envelope-from dillon) Date: Fri, 30 Nov 2001 20:49:37 -0800 (PST) From: Matthew Dillon Message-Id: <200112010449.fB14nbw28731@apollo.backplane.com> To: Leo Bicknell Cc: Mike Silbersack , freebsd-hackers@FreeBSD.ORG Subject: Re: TCP Performance Graphs References: <200111302059.fAUKxrI19553@apollo.backplane.com> <20011130194126.A969@ussenterprise.ufp.org> Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG :I think I tried this patch, and found some problems with it. As :I recall the problems were with extremely high bandwidth connections :(eg, I have two machines that can move 100Mbps FDX across country :(70ms latency), and when I tried the patch with that case performance :was "bad", in the sense that I got like 20Mbps, rather than 100, :like it should have allowed. Yah. RTT noise probably did it in. At those bandwidths the algorithm would be very hard pressed to find the point as it increases CWIN where the RTT goes up. -Matt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message