From owner-freebsd-net Sun Nov 5 14:24:40 2000 Delivered-To: freebsd-net@freebsd.org Received: from fw.wintelcom.net (ns1.wintelcom.net [209.1.153.20]) by hub.freebsd.org (Postfix) with ESMTP id 49E8737B4CF for ; Sun, 5 Nov 2000 14:24:38 -0800 (PST) Received: (from bright@localhost) by fw.wintelcom.net (8.10.0/8.10.0) id eA5MOXv25962; Sun, 5 Nov 2000 14:24:33 -0800 (PST) Date: Sun, 5 Nov 2000 14:24:33 -0800 From: Alfred Perlstein To: David Greenman Cc: freebsd-net@FreeBSD.ORG Subject: Re: tcp sendspace/recvspace Message-ID: <20001105142433.K5112@fw.wintelcom.net> References: <200011052202.OAA24207@implode.root.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.4i In-Reply-To: <200011052202.OAA24207@implode.root.com>; from dg@root.com on Sun, Nov 05, 2000 at 02:02:44PM -0800 Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org * David Greenman [001105 14:05] wrote: > 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? No objection, just a suggestion that perhaps it should be set when booting and determined by the amount of ram in the machine. Just setting it 32k would also work. :) -- -Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org] "I have the heart of a child; I keep it in a jar on my desk." To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message