From owner-freebsd-net Sun Nov 5 14: 4:48 2000 Delivered-To: freebsd-net@freebsd.org Received: from implode.root.com (root.com [209.102.106.178]) by hub.freebsd.org (Postfix) with ESMTP id D4AE537B4CF for ; Sun, 5 Nov 2000 14:04:45 -0800 (PST) Received: from implode.root.com (localhost [127.0.0.1]) by implode.root.com (8.8.8/8.8.5) with ESMTP id OAA24207 for ; Sun, 5 Nov 2000 14:02:44 -0800 (PST) Message-Id: <200011052202.OAA24207@implode.root.com> To: freebsd-net@freebsd.org Subject: tcp sendspace/recvspace From: David Greenman Reply-To: dg@root.com Date: Sun, 05 Nov 2000 14:02:44 -0800 Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org I've been messing around with the net.inet.tcp.sendspace and net.inet.tcp.recvspace parameters on ftp.freesoftware.com and have found that there is a significant performance improvement when increasing these to 32768 bytes. Apparantly there are enough systems out there with higher window maxes that it really does make a difference. By significant improvement, I mean about a average of a 20% increase in Mbps per user, and this was just the change over a 30 minute period with lots of connections still using the old 16K values. Any objections to increasing the defaults in FreeBSD to 32K? -DG David Greenman Co-founder, The FreeBSD Project - http://www.freebsd.org President, TeraSolutions, Inc. - http://www.terasolutions.com Pave the road of life with opportunities. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message