Date: Fri, 12 Sep 2003 19:34:04 -0500 (CDT) From: Mike Silbersack <silby@silby.com> To: The Jetman <jetman@mycbc.com> Cc: freebsd-net@freebsd.org Subject: Re: [4.5-R]FTP Uploading Is Massively Broken.... Message-ID: <20030912193151.S640@odysseus.silby.com> In-Reply-To: <000d01c37982$239ce4e0$3200a8c0@CBCOFFICE> References: <00e401c377d2$7d13e840$3200a8c0@CBCOFFICE> <000d01c37982$239ce4e0$3200a8c0@CBCOFFICE>
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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
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