home *** CD-ROM | disk | FTP | other *** search
- Path: sparky!uunet!darwin.sura.net!convex!bcm!tamsun.tamu.edu!inetg1!nuntius
- From: gwhite@arco.com (Gary White)
- Newsgroups: comp.unix.aix
- Subject: Satellites vs. FTP
- Message-ID: <1992Jul28.013938.28384@Arco.COM>
- Date: 28 Jul 1992 01:39:38 GMT
- Sender: news@Arco.COM
- Organization: ARCO
- Lines: 22
- X-Useragent: Nuntius v1.1
-
- Hi-
- We're trying to move files between two RS/6000
- 560's using a T1 link that involves a satellite hop,
- for instance with FTP.
-
- Performance is worse (25KB/s) than on a terrestial
- T1 link (32KB/s), and also worse than what is seen with
- certain other brand computers (38KB/s, Sun SS2's.)
-
- I notice that the packet size is 570 bytes instead of 1518
- bytes in the land-only case, which incidentally is to a
- machine with a more closely-related network number.
-
- Have we any way to influence the packet size, and how about
- the TCP window? Somehow it seems we should get more
- bang out of a T1, in both the satellite-hop and the terrestial
- cases.
-
- Thanks-
- -Gary White
- ARCO
- Plano, TX
-