From owner-freebsd-net@FreeBSD.ORG Fri Sep 12 17:35:19 2003 Return-Path: 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 6481816A4BF for ; Fri, 12 Sep 2003 17:35:19 -0700 (PDT) Received: from relay.pair.com (relay.pair.com [209.68.1.20]) by mx1.FreeBSD.org (Postfix) with SMTP id 72D0443F3F for ; Fri, 12 Sep 2003 17:35:18 -0700 (PDT) (envelope-from silby@silby.com) Received: (qmail 97143 invoked from network); 13 Sep 2003 00:35:17 -0000 Received: from niwun.pair.com (HELO localhost) (209.68.2.70) by relay.pair.com with SMTP; 13 Sep 2003 00:35:17 -0000 X-pair-Authenticated: 209.68.2.70 Date: Fri, 12 Sep 2003 19:34:04 -0500 (CDT) From: Mike Silbersack To: The Jetman In-Reply-To: <000d01c37982$239ce4e0$3200a8c0@CBCOFFICE> Message-ID: <20030912193151.S640@odysseus.silby.com> References: <00e401c377d2$7d13e840$3200a8c0@CBCOFFICE> <000d01c37982$239ce4e0$3200a8c0@CBCOFFICE> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: freebsd-net@freebsd.org Subject: Re: [4.5-R]FTP Uploading Is Massively Broken.... X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 13 Sep 2003 00:35:19 -0000 On Fri, 12 Sep 2003, The Jetman wrote: > Mike: OKAY ! This is unknown territory for me, so I didn't know > TCPDUMP could be a friend, but I gen'd a simple TCPDUMP session, monitoring > a session via wi0 to my ISP's FTP server called (for the purps of this dump) > foobar.com. The test target is a 266567 byte ASCII file, which took 93 secs. > Obviously, I ZIPped the attachment. > > TIA....Jet I looked over the tcpdump that was sent to me, and it appears that Jeffery Hsu is right; by setting the sendspace down to 1024 bytes, you've caused your system to send smaller than normal packets and have also caused the system to send only one packet at a time, destroying performance. In addition, there is a problem with dropped packets, but that's to be expected on a wireless link, and it should be handled fine with a proper sendspace setting. Mike "Silby" Silbersack